o Adding USB CDC code/support.

38 files changed, 11125 insertions, 781 deletions

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..4456701
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,11 @@
+root = true
+
+[*]
+insert_final_newline = true
+trim_trailing_whitespace = true
+charset = utf-8
+indent_style = space
+indent_size = 4
+
+[stm32cubemx/**.{h,c}]
+indent_size = 2
diff --git a/.gdbinit b/.gdbinit
index e2ea19a..3edbdf0 100644
--- a/.gdbinit
+++ b/.gdbinit
@@ -24,3 +24,8 @@ define run_firmware
 end
 
 target extended-remote :3333
+set confirm off
+file build/firmware
+hb halt
+hb main
+disable 2
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2ffe0f9..4097d5a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,7 +24,7 @@ target_sources(firmware PUBLIC
   thirdparty/mcu.cmake/stm32f103/src/init_low_halt.s
   thirdparty/mcu.cmake/stm32f103/src/init_low_Reset_Handler.s
   thirdparty/mcu.cmake/stm32f103/src/breakpoint.s
-  $ENV{HOME}/opt/STM32CubeMX/Repository/STM32Cube_FW_F1_V1.4.0/Drivers/CMSIS/Device/ST/STM32F1xx/Source/Templates/gcc/startup_stm32f103x6.s
+  $ENV{HOME}/opt/STM32CubeMX/Repository/STM32Cube_FW_F1_V1.4.0/Drivers/CMSIS/Device/ST/STM32F1xx/Source/Templates/gcc/startup_stm32f103xb.s
 )
 
 # mcucpp sources
@@ -48,7 +48,7 @@ mcu_include_directories_from_sources(
   EXCLUDE _template.c
   EXCLUDE Examples
   EXCLUDE DSP_Lib
-  EXCLUDE stm32f1xx_it.c
+#  EXCLUDE stm32f1xx_it.c
   SOURCES_VAR STM32_CUBEMX_SOURCES
   HEADERS_VAR STM32_CUBEMX_HEADERS
   INCLUDES_VAR STM32_CUBEMX_INCLUDES
diff --git a/src/radio-controller.cpp b/src/radio-controller.cpp
index 53f6ef0..132f581 100644
--- a/src/radio-controller.cpp
+++ b/src/radio-controller.cpp
@@ -3,14 +3,26 @@
 #include <cstdio>
 #include "mcu/arm/semihosting.h"
 
+#ifdef HAL_IWDG_MODULE_ENABLED
+extern IWDG_HandleTypeDef hiwdg;
+#endif
+
 void main_pre_init() {
-  SystemInit();
+//    SystemInit();
 }
 
 void main_post_init() {
-	semihosting::enable();
+    semihosting::enable();
 }
 
 void main_loop() {
-	printf("hello world!");
+//    printf("hello world!");
+
+#ifdef HAL_IWDG_MODULE_ENABLED
+    HAL_IWDG_Refresh(&hiwdg);
+#endif
+}
+
+void it_tim1(TIM_HandleTypeDef *htim1) {
+    ;
 }
diff --git a/stm32cubemx/.mxproject b/stm32cubemx/.mxproject
index f5c6b25..2cb29af 100644
--- a/stm32cubemx/.mxproject
+++ b/stm32cubemx/.mxproject
@@ -1,5 +1,5 @@
 [PreviousLibFiles]
-LibFiles=Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_iwdg.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/Legacy/stm32_hal_legacy.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_def.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio_ex.h;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_cortex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pwr.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash_ex.h;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c;Drivers/CMSIS/Device/ST/STM32F1xx/Include/stm32f103x6.h;Drivers/CMSIS/Device/ST/STM32F1xx/Include/stm32f1xx.h;Drivers/CMSIS/Device/ST/STM32F1xx/Include/system_stm32f1xx.h;Drivers/CMSIS/Device/ST/STM32F1xx/Source/Templates/system_stm32f1xx.c;Drivers/CMSIS/Include/cmsis_armcc_V6.h;Drivers/CMSIS/Include/core_cm0plus.h;Drivers/CMSIS/Include/core_cmSimd.h;Drivers/CMSIS/Include/cmsis_gcc.h;Drivers/CMSIS/Include/core_cm4.h;Drivers/CMSIS/Include/arm_const_structs.h;Drivers/CMSIS/Include/core_sc300.h;Drivers/CMSIS/Include/core_cm3.h;Drivers/CMSIS/Include/arm_common_tables.h;Drivers/CMSIS/Include/core_cm0.h;Drivers/CMSIS/Include/cmsis_armcc.h;Drivers/CMSIS/Include/core_cm7.h;Drivers/CMSIS/Include/core_cmFunc.h;Drivers/CMSIS/Include/core_cmInstr.h;Drivers/CMSIS/Include/arm_math.h;Drivers/CMSIS/Include/core_sc000.h;
+LibFiles=Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pcd.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pcd_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_ll_usb.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/Legacy/stm32_hal_legacy.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_def.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio_ex.h;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_cortex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pwr.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash_ex.h;Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_core.h;Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_ctlreq.h;Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_def.h;Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_ioreq.h;Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc/usbd_cdc.h;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_ll_usb.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c;Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.c;Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ctlreq.c;Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ioreq.c;Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c;Drivers/CMSIS/Device/ST/STM32F1xx/Include/stm32f103x6.h;Drivers/CMSIS/Device/ST/STM32F1xx/Include/stm32f1xx.h;Drivers/CMSIS/Device/ST/STM32F1xx/Include/system_stm32f1xx.h;Drivers/CMSIS/Device/ST/STM32F1xx/Source/Templates/system_stm32f1xx.c;Drivers/CMSIS/Include/cmsis_armcc_V6.h;Drivers/CMSIS/Include/core_cm0plus.h;Drivers/CMSIS/Include/core_cmSimd.h;Drivers/CMSIS/Include/cmsis_gcc.h;Drivers/CMSIS/Include/core_cm4.h;Drivers/CMSIS/Include/arm_const_structs.h;Drivers/CMSIS/Include/core_sc300.h;Drivers/CMSIS/Include/core_cm3.h;Drivers/CMSIS/Include/arm_common_tables.h;Drivers/CMSIS/Include/core_cm0.h;Drivers/CMSIS/Include/cmsis_armcc.h;Drivers/CMSIS/Include/core_cm7.h;Drivers/CMSIS/Include/core_cmFunc.h;Drivers/CMSIS/Include/core_cmInstr.h;Drivers/CMSIS/Include/arm_math.h;Drivers/CMSIS/Include/core_sc000.h;
 
 []
 SourceFiles=;null;
diff --git a/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_iwdg.h b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_iwdg.h
deleted file mode 100644
index bfd0eda..0000000
--- a/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_iwdg.h
+++ /dev/null
@@ -1,299 +0,0 @@
-/**
-  ******************************************************************************
-  * @file    stm32f1xx_hal_iwdg.h
-  * @author  MCD Application Team
-  * @version V1.0.4
-  * @date    29-April-2016
-  * @brief   Header file of IWDG HAL module.
-  ******************************************************************************
-  * @attention
-  *
-  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
-  *
-  * Redistribution and use in source and binary forms, with or without modification,
-  * are permitted provided that the following conditions are met:
-  *   1. Redistributions of source code must retain the above copyright notice,
-  *      this list of conditions and the following disclaimer.
-  *   2. Redistributions in binary form must reproduce the above copyright notice,
-  *      this list of conditions and the following disclaimer in the documentation
-  *      and/or other materials provided with the distribution.
-  *   3. Neither the name of STMicroelectronics nor the names of its contributors
-  *      may be used to endorse or promote products derived from this software
-  *      without specific prior written permission.
-  *
-  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-  *
-  ******************************************************************************
-  */ 
-
-/* Define to prevent recursive inclusion -------------------------------------*/
-#ifndef __STM32F1xx_HAL_IWDG_H
-#define __STM32F1xx_HAL_IWDG_H
-
-#ifdef __cplusplus
- extern "C" {
-#endif
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32f1xx_hal_def.h"
-
-/** @addtogroup STM32F1xx_HAL_Driver
-  * @{
-  */
-
-/** @addtogroup IWDG
-  * @{
-  */ 
-
-/* Exported types ------------------------------------------------------------*/
-
-/** @defgroup IWDG_Exported_Types IWDG Exported Types
-  * @{
-  */
-
-/** 
-  * @brief  IWDG HAL State Structure definition  
-  */ 
-typedef enum
-{
-  HAL_IWDG_STATE_RESET     = 0x00,  /*!< IWDG not yet initialized or disabled */
-  HAL_IWDG_STATE_READY     = 0x01,  /*!< IWDG initialized and ready for use   */
-  HAL_IWDG_STATE_BUSY      = 0x02,  /*!< IWDG internal process is ongoing     */
-  HAL_IWDG_STATE_TIMEOUT   = 0x03,  /*!< IWDG timeout state                   */
-  HAL_IWDG_STATE_ERROR     = 0x04   /*!< IWDG error state                     */
-    
-}HAL_IWDG_StateTypeDef;
-
-/** 
-  * @brief  IWDG Init structure definition  
-  */ 
-typedef struct
-{
-  uint32_t Prescaler;  /*!< Select the prescaler of the IWDG.  
-                            This parameter can be a value of @ref IWDG_Prescaler */
-  
-  uint32_t Reload;     /*!< Specifies the IWDG down-counter reload value. 
-                            This parameter must be a number between Min_Data = 0 and Max_Data = 0x0FFF */
-
-}IWDG_InitTypeDef;
-
-/** 
-  * @brief  IWDG Handle Structure definition  
-  */ 
-typedef struct
-{
-  IWDG_TypeDef                 *Instance;  /*!< Register base address    */ 
-  
-  IWDG_InitTypeDef             Init;       /*!< IWDG required parameters */
-  
-  HAL_LockTypeDef              Lock;       /*!< IWDG Locking object      */
-  
-  __IO HAL_IWDG_StateTypeDef   State;      /*!< IWDG communication state */
-  
-}IWDG_HandleTypeDef;
-
-/**
-  * @}
-  */
-
-/* Exported constants --------------------------------------------------------*/
-
-/** @defgroup IWDG_Exported_Constants IWDG Exported Constants
-  * @{
-  */
-
-/** @defgroup IWDG_Registers_BitMask IWDG Registers BitMask
-  * @brief IWDG registers bit mask
-  * @{
-  */
-/* --- KR Register ---*/
-/* KR register bit mask */
-#define IWDG_KEY_RELOAD               ((uint32_t)0xAAAA)  /*!< IWDG Reload Counter Enable   */
-#define IWDG_KEY_ENABLE               ((uint32_t)0xCCCC)  /*!< IWDG Peripheral Enable       */
-#define IWDG_KEY_WRITE_ACCESS_ENABLE  ((uint32_t)0x5555)  /*!< IWDG KR Write Access Enable  */
-#define IWDG_KEY_WRITE_ACCESS_DISABLE ((uint32_t)0x0000)  /*!< IWDG KR Write Access Disable */
-
-/**
-  * @}
-  */
-
-/** @defgroup IWDG_Flag_definition IWDG Flag definition
-  * @{
-  */ 
-#define IWDG_FLAG_PVU   ((uint32_t)IWDG_SR_PVU)  /*!< Watchdog counter prescaler value update Flag */
-#define IWDG_FLAG_RVU   ((uint32_t)IWDG_SR_RVU)  /*!< Watchdog counter reload value update Flag    */
-
-/**
-  * @}
-  */
-
-/** @defgroup IWDG_Prescaler IWDG Prescaler
-  * @{
-  */ 
-#define IWDG_PRESCALER_4     ((uint8_t)0x00)  /*!< IWDG prescaler set to 4   */
-#define IWDG_PRESCALER_8     ((uint8_t)(IWDG_PR_PR_0))                  /*!< IWDG prescaler set to 8   */
-#define IWDG_PRESCALER_16    ((uint8_t)(IWDG_PR_PR_1))                  /*!< IWDG prescaler set to 16  */
-#define IWDG_PRESCALER_32    ((uint8_t)(IWDG_PR_PR_1 | IWDG_PR_PR_0))   /*!< IWDG prescaler set to 32  */
-#define IWDG_PRESCALER_64    ((uint8_t)(IWDG_PR_PR_2))                  /*!< IWDG prescaler set to 64  */
-#define IWDG_PRESCALER_128   ((uint8_t)(IWDG_PR_PR_2 | IWDG_PR_PR_0))   /*!< IWDG prescaler set to 128 */
-#define IWDG_PRESCALER_256   ((uint8_t)(IWDG_PR_PR_2 | IWDG_PR_PR_1))   /*!< IWDG prescaler set to 256 */
-
-/**
-  * @}
-  */ 
-
-
-/**
-  * @}
-  */
-
-/* Exported macros -----------------------------------------------------------*/
-
-/** @defgroup IWDG_Exported_Macros IWDG Exported Macros
-  * @{
-  */
-
-/** @brief Reset IWDG handle state
-  * @param  __HANDLE__: IWDG handle.
-  * @retval None
-  */
-#define __HAL_IWDG_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_IWDG_STATE_RESET)
-
-/**
-  * @brief  Enables the IWDG peripheral.
-  * @param  __HANDLE__: IWDG handle
-  * @retval None
-  */
-#define __HAL_IWDG_START(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_ENABLE)
-
-/**
-  * @brief  Reloads IWDG counter with value defined in the reload register
-  *         (write access to IWDG_PR and IWDG_RLR registers disabled).
-  * @param  __HANDLE__: IWDG handle
-  * @retval None
-  */
-#define __HAL_IWDG_RELOAD_COUNTER(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_RELOAD)
-
-
-
-/**
-  * @brief  Gets the selected IWDG's flag status.
-  * @param  __HANDLE__: IWDG handle
-  * @param  __FLAG__: specifies the flag to check.
-  *         This parameter can be one of the following values:
-  *            @arg IWDG_FLAG_PVU: Watchdog counter reload value update flag
-  *            @arg IWDG_FLAG_RVU: Watchdog counter prescaler value flag
-  * @retval The new state of __FLAG__ (TRUE or FALSE).
-  */
-#define __HAL_IWDG_GET_FLAG(__HANDLE__, __FLAG__) (((__HANDLE__)->Instance->SR & (__FLAG__)) == (__FLAG__))
-
-/**
-  * @}
-  */ 
-
-/* Private macro -------------------------------------------------------------*/
-
-/** @defgroup IWDG_Private_Macros IWDG Private Macros
-  * @{
-  */
-
-
-/**
-  * @brief  Enables write access to IWDG_PR and IWDG_RLR registers.
-  * @param  __HANDLE__: IWDG handle
-  * @retval None
-  */
-#define IWDG_ENABLE_WRITE_ACCESS(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_ENABLE)
-
-/**
-  * @brief  Disables write access to IWDG_PR and IWDG_RLR registers.
-  * @param  __HANDLE__: IWDG handle
-  * @retval None
-  */
-#define IWDG_DISABLE_WRITE_ACCESS(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_DISABLE)
-
-
-#define IS_IWDG_PRESCALER(__PRESCALER__) (((__PRESCALER__) == IWDG_PRESCALER_4)  || \
-                                          ((__PRESCALER__) == IWDG_PRESCALER_8)  || \
-                                          ((__PRESCALER__) == IWDG_PRESCALER_16) || \
-                                          ((__PRESCALER__) == IWDG_PRESCALER_32) || \
-                                          ((__PRESCALER__) == IWDG_PRESCALER_64) || \
-                                          ((__PRESCALER__) == IWDG_PRESCALER_128)|| \
-                                          ((__PRESCALER__) == IWDG_PRESCALER_256))
-
-
-#define IS_IWDG_RELOAD(__RELOAD__) ((__RELOAD__) <= 0xFFF)
-
-
-/**
-  * @}
-  */
-
-
-
-/* Exported functions --------------------------------------------------------*/
-
-/** @addtogroup IWDG_Exported_Functions
-  * @{
-  */
-
-/** @addtogroup IWDG_Exported_Functions_Group1
-  * @{
-  */
-/* Initialization/de-initialization functions  ********************************/
-HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg);
-void HAL_IWDG_MspInit(IWDG_HandleTypeDef *hiwdg);
-
-/**
-  * @}
-  */
-  
-/** @addtogroup IWDG_Exported_Functions_Group2
-  * @{
-  */
-/* I/O operation functions ****************************************************/
-HAL_StatusTypeDef HAL_IWDG_Start(IWDG_HandleTypeDef *hiwdg);
-HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg);
-
-/**
-  * @}
-  */
-  
-/** @addtogroup IWDG_Exported_Functions_Group3
-  * @{
-  */
-/* Peripheral State functions  ************************************************/
-HAL_IWDG_StateTypeDef HAL_IWDG_GetState(IWDG_HandleTypeDef *hiwdg);
-
-/**
-  * @}
-  */ 
-
-/**
-  * @}
-  */ 
-  
-/**
-  * @}
-  */ 
-
-/**
-  * @}
-  */ 
-  
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* __STM32F1xx_HAL_IWDG_H */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pcd.h b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pcd.h
new file mode 100644
index 0000000..9489bd3
--- /dev/null
+++ b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pcd.h
@@ -0,0 +1,853 @@
+/**
+  ******************************************************************************
+  * @file    stm32f1xx_hal_pcd.h
+  * @author  MCD Application Team
+  * @version V1.0.4
+  * @date    29-April-2016
+  * @brief   Header file of PCD HAL module.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F1xx_HAL_PCD_H
+#define __STM32F1xx_HAL_PCD_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#if defined(STM32F102x6) || defined(STM32F102xB) || \
+    defined(STM32F103x6) || defined(STM32F103xB) || \
+    defined(STM32F103xE) || defined(STM32F103xG) || \
+    defined(STM32F105xC) || defined(STM32F107xC)
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx_ll_usb.h"
+
+/** @addtogroup STM32F1xx_HAL_Driver
+  * @{
+  */
+
+/** @addtogroup PCD
+  * @{
+  */ 
+
+/* Exported types ------------------------------------------------------------*/ 
+/** @defgroup PCD_Exported_Types PCD Exported Types
+  * @{
+  */
+
+/**
+  * @brief  PCD State structure definition
+  */
+typedef enum
+{
+  HAL_PCD_STATE_RESET   = 0x00,
+  HAL_PCD_STATE_READY   = 0x01,
+  HAL_PCD_STATE_ERROR   = 0x02,
+  HAL_PCD_STATE_BUSY    = 0x03,
+  HAL_PCD_STATE_TIMEOUT = 0x04
+} PCD_StateTypeDef;
+
+#if defined (USB)
+/**
+  * @brief  PCD double buffered endpoint direction
+  */
+typedef enum
+{
+  PCD_EP_DBUF_OUT,
+  PCD_EP_DBUF_IN,
+  PCD_EP_DBUF_ERR,
+}PCD_EP_DBUF_DIR;
+
+/**
+  * @brief  PCD endpoint buffer number
+  */
+typedef enum 
+{
+  PCD_EP_NOBUF,
+  PCD_EP_BUF0,
+  PCD_EP_BUF1
+}PCD_EP_BUF_NUM;  
+#endif /* USB */
+
+#if defined (USB_OTG_FS)
+typedef USB_OTG_GlobalTypeDef  PCD_TypeDef;
+typedef USB_OTG_CfgTypeDef     PCD_InitTypeDef;
+typedef USB_OTG_EPTypeDef      PCD_EPTypeDef;
+#endif /* USB_OTG_FS */
+
+#if defined (USB)
+typedef USB_TypeDef        PCD_TypeDef;
+typedef USB_CfgTypeDef     PCD_InitTypeDef;
+typedef USB_EPTypeDef      PCD_EPTypeDef;
+#endif /* USB */
+
+/** 
+  * @brief  PCD Handle Structure definition
+  */
+typedef struct
+{
+  PCD_TypeDef             *Instance;   /*!< Register base address               */
+  PCD_InitTypeDef         Init;        /*!< PCD required parameters             */
+  __IO uint8_t            USB_Address; /*!< USB Address: not used by USB OTG FS */  
+  PCD_EPTypeDef           IN_ep[15];   /*!< IN endpoint parameters              */
+  PCD_EPTypeDef           OUT_ep[15];  /*!< OUT endpoint parameters             */
+  HAL_LockTypeDef         Lock;        /*!< PCD peripheral status               */
+  __IO PCD_StateTypeDef   State;       /*!< PCD communication state             */
+  uint32_t                Setup[12];   /*!< Setup packet buffer                 */
+  void                    *pData;      /*!< Pointer to upper stack Handler      */
+} PCD_HandleTypeDef;
+
+/**
+  * @}
+  */
+
+/* Include PCD HAL Extension module */
+#include "stm32f1xx_hal_pcd_ex.h"
+
+/* Exported constants --------------------------------------------------------*/
+/** @defgroup PCD_Exported_Constants PCD Exported Constants
+  * @{
+  */
+
+/** @defgroup PCD_Speed PCD Speed
+  * @{
+  */
+#define PCD_SPEED_HIGH                                                0 /* Not Supported */
+#define PCD_SPEED_HIGH_IN_FULL                                        1 /* Not Supported */
+#define PCD_SPEED_FULL                                                2
+/**
+  * @}
+  */
+  
+/** @defgroup PCD_PHY_Module PCD PHY Module
+  * @{
+  */
+#define PCD_PHY_EMBEDDED                                              2
+/**
+  * @}
+  */
+
+/** @defgroup PCD_Turnaround_Timeout Turnaround Timeout Value
+  * @{
+  */
+#ifndef USBD_FS_TRDT_VALUE
+ #define USBD_FS_TRDT_VALUE           5
+#endif /* USBD_FS_TRDT_VALUE */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/* Exported macros -----------------------------------------------------------*/
+/** @defgroup PCD_Exported_Macros PCD Exported Macros
+ *  @brief macros to handle interrupts and specific clock configurations
+ * @{
+ */
+#if defined (USB_OTG_FS)
+
+#define __HAL_PCD_ENABLE(__HANDLE__)                                  USB_EnableGlobalInt ((__HANDLE__)->Instance)
+#define __HAL_PCD_DISABLE(__HANDLE__)                                 USB_DisableGlobalInt ((__HANDLE__)->Instance)
+
+#define __HAL_PCD_GET_FLAG(__HANDLE__, __INTERRUPT__)                 ((USB_ReadInterrupts((__HANDLE__)->Instance) & (__INTERRUPT__)) == (__INTERRUPT__))
+#define __HAL_PCD_CLEAR_FLAG(__HANDLE__, __INTERRUPT__)               (((__HANDLE__)->Instance->GINTSTS) = (__INTERRUPT__))
+#define __HAL_PCD_IS_INVALID_INTERRUPT(__HANDLE__)                    (USB_ReadInterrupts((__HANDLE__)->Instance) == 0)
+
+#define __HAL_PCD_UNGATE_PHYCLOCK(__HANDLE__)                         *(__IO uint32_t *)((uint32_t)((__HANDLE__)->Instance) + USB_OTG_PCGCCTL_BASE) &= \
+                                                                      ~(USB_OTG_PCGCCTL_STOPCLK)
+
+#define __HAL_PCD_GATE_PHYCLOCK(__HANDLE__)                           *(__IO uint32_t *)((uint32_t)((__HANDLE__)->Instance) + USB_OTG_PCGCCTL_BASE) |= USB_OTG_PCGCCTL_STOPCLK
+
+#define __HAL_PCD_IS_PHY_SUSPENDED(__HANDLE__)                        ((*(__IO uint32_t *)((uint32_t)((__HANDLE__)->Instance) + USB_OTG_PCGCCTL_BASE))&0x10)
+
+#define __HAL_USB_OTG_FS_WAKEUP_EXTI_ENABLE_IT()                      EXTI->IMR |= USB_OTG_FS_WAKEUP_EXTI_LINE
+#define __HAL_USB_OTG_FS_WAKEUP_EXTI_DISABLE_IT()                     EXTI->IMR &= ~(USB_OTG_FS_WAKEUP_EXTI_LINE)
+#define __HAL_USB_OTG_FS_WAKEUP_EXTI_GET_FLAG()                       EXTI->PR & (USB_OTG_FS_WAKEUP_EXTI_LINE)
+#define __HAL_USB_OTG_FS_WAKEUP_EXTI_CLEAR_FLAG()                     EXTI->PR = USB_OTG_FS_WAKEUP_EXTI_LINE
+
+#define __HAL_USB_OTG_FS_WAKEUP_EXTI_ENABLE_RISING_EDGE()                 \
+                        do{                                               \
+                            EXTI->FTSR &= ~(USB_OTG_FS_WAKEUP_EXTI_LINE); \
+                            EXTI->RTSR |= USB_OTG_FS_WAKEUP_EXTI_LINE;    \
+                          } while(0)
+
+#define __HAL_USB_OTG_FS_WAKEUP_EXTI_ENABLE_FALLING_EDGE()                \
+                        do{                                               \
+                            EXTI->FTSR |= (USB_OTG_FS_WAKEUP_EXTI_LINE);  \
+                            EXTI->RTSR &= ~(USB_OTG_FS_WAKEUP_EXTI_LINE); \
+                          } while(0)
+
+#define __HAL_USB_OTG_FS_WAKEUP_EXTI_ENABLE_RISING_FALLING_EDGE()         \
+                        do{                                               \
+                            EXTI->RTSR &= ~(USB_OTG_FS_WAKEUP_EXTI_LINE); \
+                            EXTI->FTSR &= ~(USB_OTG_FS_WAKEUP_EXTI_LINE); \
+                            EXTI->RTSR |= USB_OTG_FS_WAKEUP_EXTI_LINE;    \
+                            EXTI->FTSR |= USB_OTG_FS_WAKEUP_EXTI_LINE;    \
+                          } while(0)
+
+#define __HAL_USB_OTG_FS_WAKEUP_EXTI_GENERATE_SWIT()                  (EXTI->SWIER |= USB_OTG_FS_WAKEUP_EXTI_LINE)
+#endif /* USB_OTG_FS */
+
+#if defined (USB)
+#define __HAL_PCD_ENABLE(__HANDLE__)                                  USB_EnableGlobalInt ((__HANDLE__)->Instance)
+#define __HAL_PCD_DISABLE(__HANDLE__)                                 USB_DisableGlobalInt ((__HANDLE__)->Instance)
+#define __HAL_PCD_GET_FLAG(__HANDLE__, __INTERRUPT__)                 ((USB_ReadInterrupts((__HANDLE__)->Instance) & (__INTERRUPT__)) == (__INTERRUPT__))
+#define __HAL_PCD_CLEAR_FLAG(__HANDLE__, __INTERRUPT__)               (((__HANDLE__)->Instance->ISTR) &= ~(__INTERRUPT__))
+
+#define __HAL_USB_WAKEUP_EXTI_ENABLE_IT()                             EXTI->IMR |= USB_WAKEUP_EXTI_LINE
+#define __HAL_USB_WAKEUP_EXTI_DISABLE_IT()                            EXTI->IMR &= ~(USB_WAKEUP_EXTI_LINE)
+#define __HAL_USB_WAKEUP_EXTI_GET_FLAG()                              EXTI->PR & (USB_WAKEUP_EXTI_LINE)
+#define __HAL_USB_WAKEUP_EXTI_CLEAR_FLAG()                            EXTI->PR = USB_WAKEUP_EXTI_LINE
+
+#define __HAL_USB_WAKEUP_EXTI_ENABLE_RISING_EDGE()                 \
+                        do{                                        \
+                            EXTI->FTSR &= ~(USB_WAKEUP_EXTI_LINE); \
+                            EXTI->RTSR |= USB_WAKEUP_EXTI_LINE;    \
+                          } while(0)
+
+#define __HAL_USB_WAKEUP_EXTI_ENABLE_FALLING_EDGE()                \
+                        do{                                        \
+                            EXTI->FTSR |= (USB_WAKEUP_EXTI_LINE);  \
+                            EXTI->RTSR &= ~(USB_WAKEUP_EXTI_LINE); \
+                          } while(0)
+
+#define __HAL_USB_WAKEUP_EXTI_ENABLE_RISING_FALLING_EDGE()         \
+                        do{                                        \
+                            EXTI->RTSR &= ~(USB_WAKEUP_EXTI_LINE); \
+                            EXTI->FTSR &= ~(USB_WAKEUP_EXTI_LINE); \
+                            EXTI->RTSR |= USB_WAKEUP_EXTI_LINE;    \
+                            EXTI->FTSR |= USB_WAKEUP_EXTI_LINE;    \
+                          } while(0)
+#endif /* USB */
+
+/**
+  * @}
+  */
+
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup PCD_Exported_Functions PCD Exported Functions
+  * @{
+  */
+
+/* Initialization/de-initialization functions  ********************************/
+/** @addtogroup PCD_Exported_Functions_Group1 Initialization and de-initialization functions
+  * @{
+  */
+HAL_StatusTypeDef HAL_PCD_Init(PCD_HandleTypeDef *hpcd);
+HAL_StatusTypeDef HAL_PCD_DeInit (PCD_HandleTypeDef *hpcd);
+void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd);
+void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd);
+/**
+  * @}
+  */
+
+/* I/O operation functions  ***************************************************/
+/* Non-Blocking mode: Interrupt */
+/** @addtogroup PCD_Exported_Functions_Group2 IO operation functions
+  * @{
+  */
+HAL_StatusTypeDef HAL_PCD_Start(PCD_HandleTypeDef *hpcd);
+HAL_StatusTypeDef HAL_PCD_Stop(PCD_HandleTypeDef *hpcd);
+void HAL_PCD_IRQHandler(PCD_HandleTypeDef *hpcd);
+
+void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum);
+void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum);
+void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd);
+void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd);
+void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd);
+void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd);
+void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd);
+void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum);
+void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum);
+void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd);
+void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd);
+/**
+  * @}
+  */
+
+/* Peripheral Control functions  **********************************************/
+/** @addtogroup PCD_Exported_Functions_Group3 Peripheral Control functions
+  * @{
+  */
+HAL_StatusTypeDef HAL_PCD_DevConnect(PCD_HandleTypeDef *hpcd);
+HAL_StatusTypeDef HAL_PCD_DevDisconnect(PCD_HandleTypeDef *hpcd);
+HAL_StatusTypeDef HAL_PCD_SetAddress(PCD_HandleTypeDef *hpcd, uint8_t address);
+HAL_StatusTypeDef HAL_PCD_EP_Open(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint16_t ep_mps, uint8_t ep_type);
+HAL_StatusTypeDef HAL_PCD_EP_Close(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
+HAL_StatusTypeDef HAL_PCD_EP_Receive(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len);
+HAL_StatusTypeDef HAL_PCD_EP_Transmit(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len);
+uint16_t          HAL_PCD_EP_GetRxCount(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
+HAL_StatusTypeDef HAL_PCD_EP_SetStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
+HAL_StatusTypeDef HAL_PCD_EP_ClrStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
+HAL_StatusTypeDef HAL_PCD_EP_Flush(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
+HAL_StatusTypeDef HAL_PCD_ActivateRemoteWakeup(PCD_HandleTypeDef *hpcd);
+HAL_StatusTypeDef HAL_PCD_DeActivateRemoteWakeup(PCD_HandleTypeDef *hpcd);
+/**
+  * @}
+  */
+
+/* Peripheral State functions  ************************************************/
+/** @addtogroup PCD_Exported_Functions_Group4 Peripheral State functions
+  * @{
+  */
+PCD_StateTypeDef HAL_PCD_GetState(PCD_HandleTypeDef *hpcd);
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/* Private constants ---------------------------------------------------------*/
+/** @defgroup PCD_Private_Constants PCD Private Constants
+  * @{
+  */
+/** @defgroup USB_EXTI_Line_Interrupt USB EXTI line interrupt
+  * @{
+  */
+#if defined (USB_OTG_FS)
+#define USB_OTG_FS_WAKEUP_EXTI_RISING_EDGE                            ((uint32_t)0x08)
+#define USB_OTG_FS_WAKEUP_EXTI_FALLING_EDGE                           ((uint32_t)0x0C)
+#define USB_OTG_FS_WAKEUP_EXTI_RISING_FALLING_EDGE                    ((uint32_t)0x10)
+
+#define USB_OTG_FS_WAKEUP_EXTI_LINE                                   ((uint32_t)0x00040000)  /*!< External interrupt line 18 Connected to the USB EXTI Line */
+#endif /* USB_OTG_FS */
+
+#if defined (USB)
+#define  USB_WAKEUP_EXTI_LINE                                         ((uint32_t)0x00040000)  /*!< External interrupt line 18 Connected to the USB EXTI Line */
+#endif /* USB */
+/**
+  * @}
+  */
+
+#if defined (USB)
+/** @defgroup PCD_EP0_MPS PCD EP0 MPS
+  * @{
+  */
+#define PCD_EP0MPS_64                                                 DEP0CTL_MPS_64
+#define PCD_EP0MPS_32                                                 DEP0CTL_MPS_32
+#define PCD_EP0MPS_16                                                 DEP0CTL_MPS_16
+#define PCD_EP0MPS_08                                                 DEP0CTL_MPS_8 
+/**
+  * @}
+  */
+  
+/** @defgroup PCD_ENDP PCD ENDP
+  * @{
+  */
+#define PCD_ENDP0                                                     ((uint8_t)0)
+#define PCD_ENDP1                                                     ((uint8_t)1)
+#define PCD_ENDP2                                                     ((uint8_t)2)
+#define PCD_ENDP3                                                     ((uint8_t)3)
+#define PCD_ENDP4                                                     ((uint8_t)4)
+#define PCD_ENDP5                                                     ((uint8_t)5)
+#define PCD_ENDP6                                                     ((uint8_t)6)
+#define PCD_ENDP7                                                     ((uint8_t)7)
+/**
+  * @}
+  */
+
+/** @defgroup PCD_ENDP_Kind PCD Endpoint Kind
+  * @{
+  */
+#define PCD_SNG_BUF                                                   0
+#define PCD_DBL_BUF                                                   1
+/**
+  * @}
+  */
+#endif /* USB */
+/**
+  * @}
+  */
+
+/* Private macros ------------------------------------------------------------*/
+/** @addtogroup PCD_Private_Macros PCD Private Macros
+ * @{
+ */
+#if defined (USB)
+/* SetENDPOINT */
+#define PCD_SET_ENDPOINT(USBx, bEpNum,wRegValue)  (*(&(USBx)->EP0R + (bEpNum) * 2)= (uint16_t)(wRegValue))
+
+/* GetENDPOINT */
+#define PCD_GET_ENDPOINT(USBx, bEpNum)            (*(&(USBx)->EP0R + (bEpNum) * 2))
+
+/* ENDPOINT transfer */
+#define USB_EP0StartXfer                          USB_EPStartXfer
+
+/**
+  * @brief  sets the type in the endpoint register(bits EP_TYPE[1:0])
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @param  wType: Endpoint Type.
+  * @retval None
+  */
+#define PCD_SET_EPTYPE(USBx, bEpNum,wType) (PCD_SET_ENDPOINT((USBx), (bEpNum),\
+                                  ((PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EP_T_MASK) | (wType) )))
+
+/**
+  * @brief  gets the type in the endpoint register(bits EP_TYPE[1:0])
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval Endpoint Type
+  */
+#define PCD_GET_EPTYPE(USBx, bEpNum) (PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EP_T_FIELD)
+
+/**
+  * @brief free buffer used from the application realizing it to the line
+          toggles bit SW_BUF in the double buffered endpoint register
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @param  bDir: Direction
+  * @retval None
+  */
+#define PCD_FreeUserBuffer(USBx, bEpNum, bDir)\
+{\
+  if ((bDir) == PCD_EP_DBUF_OUT)\
+  { /* OUT double buffered endpoint */\
+    PCD_TX_DTOG((USBx), (bEpNum));\
+  }\
+  else if ((bDir) == PCD_EP_DBUF_IN)\
+  { /* IN double buffered endpoint */\
+    PCD_RX_DTOG((USBx), (bEpNum));\
+  }\
+}
+
+/**
+  * @brief gets direction of the double buffered endpoint
+  * @param   USBx: USB peripheral instance register address.
+  * @param   bEpNum: Endpoint Number.
+  * @retval EP_DBUF_OUT, EP_DBUF_IN,
+  *         EP_DBUF_ERR if the endpoint counter not yet programmed.
+  */
+#define PCD_GET_DB_DIR(USBx, bEpNum)\
+{\
+  if ((uint16_t)(*PCD_EP_RX_CNT((USBx), (bEpNum)) & 0xFC00) != 0)\
+    return(PCD_EP_DBUF_OUT);\
+  else if (((uint16_t)(*PCD_EP_TX_CNT((USBx), (bEpNum))) & 0x03FF) != 0)\
+    return(PCD_EP_DBUF_IN);\
+  else\
+    return(PCD_EP_DBUF_ERR);\
+}
+
+/**
+  * @brief  sets the status for tx transfer (bits STAT_TX[1:0]).
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @param  wState: new state
+  * @retval None
+  */
+#define PCD_SET_EP_TX_STATUS(USBx, bEpNum, wState) { register uint16_t _wRegVal;\
+   \
+    _wRegVal = PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPTX_DTOGMASK;\
+   /* toggle first bit ? */     \
+   if((USB_EPTX_DTOG1 & (wState))!= 0)\
+   {                                                                            \
+     _wRegVal ^= USB_EPTX_DTOG1;        \
+   }                                                                            \
+   /* toggle second bit ?  */         \
+   if((USB_EPTX_DTOG2 & (wState))!= 0)      \
+   {                                                                            \
+     _wRegVal ^= USB_EPTX_DTOG2;        \
+   }                                                                            \
+   PCD_SET_ENDPOINT((USBx), (bEpNum), (_wRegVal | USB_EP_CTR_RX|USB_EP_CTR_TX));\
+  } /* PCD_SET_EP_TX_STATUS */
+
+/**
+  * @brief  sets the status for rx transfer (bits STAT_TX[1:0])
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @param  wState: new state
+  * @retval None
+  */
+#define PCD_SET_EP_RX_STATUS(USBx, bEpNum,wState) {\
+    register uint16_t _wRegVal;   \
+    \
+    _wRegVal = PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPRX_DTOGMASK;\
+    /* toggle first bit ? */  \
+    if((USB_EPRX_DTOG1 & (wState))!= 0) \
+    {                                                                             \
+      _wRegVal ^= USB_EPRX_DTOG1;  \
+    }                                                                             \
+    /* toggle second bit ? */  \
+    if((USB_EPRX_DTOG2 & (wState))!= 0) \
+    {                                                                             \
+      _wRegVal ^= USB_EPRX_DTOG2;  \
+    }                                                                             \
+    PCD_SET_ENDPOINT((USBx), (bEpNum), (_wRegVal | USB_EP_CTR_RX|USB_EP_CTR_TX)); \
+  } /* PCD_SET_EP_RX_STATUS */
+
+/**
+  * @brief  sets the status for rx & tx (bits STAT_TX[1:0] & STAT_RX[1:0])
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @param  wStaterx: new state.
+  * @param  wStatetx: new state.
+  * @retval None
+  */
+#define PCD_SET_EP_TXRX_STATUS(USBx,bEpNum,wStaterx,wStatetx) {\
+    register uint32_t _wRegVal;   \
+    \
+    _wRegVal = PCD_GET_ENDPOINT((USBx), (bEpNum)) & (USB_EPRX_DTOGMASK |USB_EPTX_STAT) ;\
+    /* toggle first bit ? */  \
+    if((USB_EPRX_DTOG1 & ((wStaterx)))!= 0) \
+    {                                                                                    \
+      _wRegVal ^= USB_EPRX_DTOG1;  \
+    }                                                                                    \
+    /* toggle second bit ? */  \
+    if((USB_EPRX_DTOG2 & (wStaterx))!= 0) \
+    {                                                                                    \
+      _wRegVal ^= USB_EPRX_DTOG2;  \
+    }                                                                                    \
+    /* toggle first bit ? */     \
+    if((USB_EPTX_DTOG1 & (wStatetx))!= 0)      \
+    {                                                                                    \
+      _wRegVal ^= USB_EPTX_DTOG1;        \
+    }                                                                                    \
+    /* toggle second bit ?  */         \
+    if((USB_EPTX_DTOG2 & (wStatetx))!= 0)      \
+    {                                                                                    \
+      _wRegVal ^= USB_EPTX_DTOG2;        \
+    }                                                                                    \
+    PCD_SET_ENDPOINT((USBx), (bEpNum), _wRegVal | USB_EP_CTR_RX|USB_EP_CTR_TX);    \
+  } /* PCD_SET_EP_TXRX_STATUS */
+
+/**
+  * @brief  gets the status for tx/rx transfer (bits STAT_TX[1:0]
+  *         /STAT_RX[1:0])
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval status
+  */
+#define PCD_GET_EP_TX_STATUS(USBx, bEpNum)     ((uint16_t)PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPTX_STAT)
+#define PCD_GET_EP_RX_STATUS(USBx, bEpNum)     ((uint16_t)PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPRX_STAT)
+
+/**
+  * @brief  sets directly the VALID tx/rx-status into the endpoint register
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval None
+  */
+#define PCD_SET_EP_TX_VALID(USBx, bEpNum)      (PCD_SET_EP_TX_STATUS((USBx), (bEpNum), USB_EP_TX_VALID))
+#define PCD_SET_EP_RX_VALID(USBx, bEpNum)      (PCD_SET_EP_RX_STATUS((USBx), (bEpNum), USB_EP_RX_VALID))
+
+/**
+  * @brief  checks stall condition in an endpoint.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval TRUE = endpoint in stall condition.
+  */
+#define PCD_GET_EP_TX_STALL_STATUS(USBx, bEpNum) (PCD_GET_EP_TX_STATUS((USBx), (bEpNum)) \
+                                   == USB_EP_TX_STALL)
+#define PCD_GET_EP_RX_STALL_STATUS(USBx, bEpNum) (PCD_GET_EP_RX_STATUS((USBx), (bEpNum)) \
+                                   == USB_EP_RX_STALL)
+
+/**
+  * @brief  set & clear EP_KIND bit.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval None
+  */
+#define PCD_SET_EP_KIND(USBx, bEpNum)    (PCD_SET_ENDPOINT((USBx), (bEpNum), \
+                                (USB_EP_CTR_RX|USB_EP_CTR_TX|((PCD_GET_ENDPOINT((USBx), (bEpNum)) | USB_EP_KIND) & USB_EPREG_MASK))))
+#define PCD_CLEAR_EP_KIND(USBx, bEpNum)  (PCD_SET_ENDPOINT((USBx), (bEpNum), \
+                                (USB_EP_CTR_RX|USB_EP_CTR_TX|(PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPKIND_MASK))))
+
+/**
+  * @brief  Sets/clears directly STATUS_OUT bit in the endpoint register.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval None
+  */
+#define PCD_SET_OUT_STATUS(USBx, bEpNum)       PCD_SET_EP_KIND((USBx), (bEpNum))
+#define PCD_CLEAR_OUT_STATUS(USBx, bEpNum)     PCD_CLEAR_EP_KIND((USBx), (bEpNum))
+
+/**
+  * @brief  Sets/clears directly EP_KIND bit in the endpoint register.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval None
+  */
+#define PCD_SET_EP_DBUF(USBx, bEpNum)          PCD_SET_EP_KIND((USBx), (bEpNum))
+#define PCD_CLEAR_EP_DBUF(USBx, bEpNum)        PCD_CLEAR_EP_KIND((USBx), (bEpNum))
+
+/**
+  * @brief  Clears bit CTR_RX / CTR_TX in the endpoint register.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval None
+  */
+#define PCD_CLEAR_RX_EP_CTR(USBx, bEpNum)   (PCD_SET_ENDPOINT((USBx), (bEpNum),\
+                                   PCD_GET_ENDPOINT((USBx), (bEpNum)) & 0x7FFF & USB_EPREG_MASK))
+#define PCD_CLEAR_TX_EP_CTR(USBx, bEpNum)   (PCD_SET_ENDPOINT((USBx), (bEpNum),\
+                                   PCD_GET_ENDPOINT((USBx), (bEpNum)) & 0xFF7F & USB_EPREG_MASK))
+
+/**
+  * @brief  Toggles DTOG_RX / DTOG_TX bit in the endpoint register.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval None
+  */
+#define PCD_RX_DTOG(USBx, bEpNum)    (PCD_SET_ENDPOINT((USBx), (bEpNum), \
+                                   USB_EP_CTR_RX|USB_EP_CTR_TX|USB_EP_DTOG_RX | (PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPREG_MASK)))
+#define PCD_TX_DTOG(USBx, bEpNum)    (PCD_SET_ENDPOINT((USBx), (bEpNum), \
+                                   USB_EP_CTR_RX|USB_EP_CTR_TX|USB_EP_DTOG_TX | (PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPREG_MASK)))
+
+/**
+  * @brief  Clears DTOG_RX / DTOG_TX bit in the endpoint register.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval None
+  */
+#define PCD_CLEAR_RX_DTOG(USBx, bEpNum)  if((PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EP_DTOG_RX) != 0)\
+                                         {                                                              \
+                                           PCD_RX_DTOG((USBx), (bEpNum));                               \
+                                         }
+#define PCD_CLEAR_TX_DTOG(USBx, bEpNum)  if((PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EP_DTOG_TX) != 0)\
+                                         {                                                              \
+                                            PCD_TX_DTOG((USBx), (bEpNum));                              \
+                                         }
+      
+/**
+  * @brief  Sets address in an endpoint register.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @param  bAddr: Address.
+  * @retval None
+  */
+#define PCD_SET_EP_ADDRESS(USBx, bEpNum,bAddr) PCD_SET_ENDPOINT((USBx), (bEpNum),\
+    USB_EP_CTR_RX|USB_EP_CTR_TX|(PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPREG_MASK) | (bAddr))
+
+#define PCD_GET_EP_ADDRESS(USBx, bEpNum) ((uint8_t)(PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPADDR_FIELD))
+
+#define PCD_EP_TX_ADDRESS(USBx, bEpNum) ((uint32_t *)(((USBx)->BTABLE+(bEpNum)*8)*2+     ((uint32_t)(USBx) + 0x400)))
+#define PCD_EP_TX_CNT(USBx, bEpNum) ((uint32_t *)(((USBx)->BTABLE+(bEpNum)*8+2)*2+  ((uint32_t)(USBx) + 0x400)))
+#define PCD_EP_RX_ADDRESS(USBx, bEpNum) ((uint32_t *)(((USBx)->BTABLE+(bEpNum)*8+4)*2+  ((uint32_t)(USBx) + 0x400)))
+#define PCD_EP_RX_CNT(USBx, bEpNum) ((uint32_t *)(((USBx)->BTABLE+(bEpNum)*8+6)*2+  ((uint32_t)(USBx) + 0x400)))
+      
+#define PCD_SET_EP_RX_CNT(USBx, bEpNum,wCount) {\
+    uint32_t *pdwReg = PCD_EP_RX_CNT((USBx), (bEpNum)); \
+    PCD_SET_EP_CNT_RX_REG(pdwReg, (wCount));\
+  }
+
+/**
+  * @brief  sets address of the tx/rx buffer.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @param  wAddr: address to be set (must be word aligned).
+  * @retval None
+  */
+#define PCD_SET_EP_TX_ADDRESS(USBx, bEpNum,wAddr) (*PCD_EP_TX_ADDRESS((USBx), (bEpNum)) = (((wAddr) >> 1) << 1))
+#define PCD_SET_EP_RX_ADDRESS(USBx, bEpNum,wAddr) (*PCD_EP_RX_ADDRESS((USBx), (bEpNum)) = (((wAddr) >> 1) << 1))
+
+/**
+  * @brief  Gets address of the tx/rx buffer.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval address of the buffer.
+  */
+#define PCD_GET_EP_TX_ADDRESS(USBx, bEpNum) ((uint16_t)*PCD_EP_TX_ADDRESS((USBx), (bEpNum)))
+#define PCD_GET_EP_RX_ADDRESS(USBx, bEpNum) ((uint16_t)*PCD_EP_RX_ADDRESS((USBx), (bEpNum)))
+
+/**
+  * @brief  Sets counter of rx buffer with no. of blocks.
+  * @param  dwReg: Register
+  * @param  wCount: Counter.
+  * @param  wNBlocks: no. of Blocks.
+  * @retval None
+  */
+#define PCD_CALC_BLK32(dwReg,wCount,wNBlocks) {\
+    (wNBlocks) = (wCount) >> 5;\
+    if(((wCount) & 0x1f) == 0)\
+    {                                                  \
+      (wNBlocks)--;\
+    }                                                  \
+    *pdwReg = (uint16_t)((uint16_t)((wNBlocks) << 10) | 0x8000); \
+  }/* PCD_CALC_BLK32 */
+
+#define PCD_CALC_BLK2(dwReg,wCount,wNBlocks) {\
+    (wNBlocks) = (wCount) >> 1;\
+    if(((wCount) & 0x1) != 0)\
+    {                                                  \
+      (wNBlocks)++;\
+    }                                                  \
+    *pdwReg = (uint16_t)((wNBlocks) << 10);\
+  }/* PCD_CALC_BLK2 */
+
+#define PCD_SET_EP_CNT_RX_REG(dwReg,wCount)  {\
+    uint16_t wNBlocks;\
+    if((wCount) > 62)                                \
+    {                                                \
+      PCD_CALC_BLK32((dwReg),(wCount),wNBlocks);     \
+    }                                                \
+    else                                             \
+    {                                                \
+      PCD_CALC_BLK2((dwReg),(wCount),wNBlocks);      \
+    }                                                \
+  }/* PCD_SET_EP_CNT_RX_REG */
+
+#define PCD_SET_EP_RX_DBUF0_CNT(USBx, bEpNum,wCount) {\
+    uint32_t *pdwReg = PCD_EP_TX_CNT((USBx), (bEpNum)); \
+    PCD_SET_EP_CNT_RX_REG(pdwReg, (wCount));\
+  }
+
+/**
+  * @brief  sets counter for the tx/rx buffer.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @param  wCount: Counter value.
+  * @retval None
+  */
+#define PCD_SET_EP_TX_CNT(USBx, bEpNum,wCount) (*PCD_EP_TX_CNT((USBx), (bEpNum)) = (wCount))
+
+
+/**
+  * @brief  gets counter of the tx buffer.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval Counter value
+  */
+#define PCD_GET_EP_TX_CNT(USBx, bEpNum)        ((uint16_t)(*PCD_EP_TX_CNT((USBx), (bEpNum))) & 0x3ff)
+#define PCD_GET_EP_RX_CNT(USBx, bEpNum)        ((uint16_t)(*PCD_EP_RX_CNT((USBx), (bEpNum))) & 0x3ff)
+
+/**
+  * @brief  Sets buffer 0/1 address in a double buffer endpoint.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @param  wBuf0Addr: buffer 0 address.
+  * @retval Counter value
+  */
+#define PCD_SET_EP_DBUF0_ADDR(USBx, bEpNum,wBuf0Addr) {PCD_SET_EP_TX_ADDRESS((USBx), (bEpNum), (wBuf0Addr));}
+#define PCD_SET_EP_DBUF1_ADDR(USBx, bEpNum,wBuf1Addr) {PCD_SET_EP_RX_ADDRESS((USBx), (bEpNum), (wBuf1Addr));}
+
+/**
+  * @brief  Sets addresses in a double buffer endpoint.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @param  wBuf0Addr: buffer 0 address.
+  * @param  wBuf1Addr = buffer 1 address.
+  * @retval None
+  */
+#define PCD_SET_EP_DBUF_ADDR(USBx, bEpNum,wBuf0Addr,wBuf1Addr) { \
+    PCD_SET_EP_DBUF0_ADDR((USBx), (bEpNum), (wBuf0Addr));\
+    PCD_SET_EP_DBUF1_ADDR((USBx), (bEpNum), (wBuf1Addr));\
+  } /* PCD_SET_EP_DBUF_ADDR */
+
+/**
+  * @brief  Gets buffer 0/1 address of a double buffer endpoint.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval None
+  */
+#define PCD_GET_EP_DBUF0_ADDR(USBx, bEpNum)    (PCD_GET_EP_TX_ADDRESS((USBx), (bEpNum)))
+#define PCD_GET_EP_DBUF1_ADDR(USBx, bEpNum)    (PCD_GET_EP_RX_ADDRESS((USBx), (bEpNum)))
+
+/**
+  * @brief  Gets buffer 0/1 address of a double buffer endpoint.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @param  bDir: endpoint dir  EP_DBUF_OUT = OUT 
+  *         EP_DBUF_IN  = IN 
+  * @param  wCount: Counter value 
+  * @retval None
+  */
+#define PCD_SET_EP_DBUF0_CNT(USBx, bEpNum, bDir, wCount)  { \
+    if((bDir) == PCD_EP_DBUF_OUT)\
+      /* OUT endpoint */ \
+    {PCD_SET_EP_RX_DBUF0_CNT((USBx), (bEpNum),(wCount));} \
+    else if((bDir) == PCD_EP_DBUF_IN)\
+      /* IN endpoint */ \
+      *PCD_EP_TX_CNT((USBx), (bEpNum)) = (uint32_t)(wCount);  \
+  } /* SetEPDblBuf0Count*/
+
+#define PCD_SET_EP_DBUF1_CNT(USBx, bEpNum, bDir, wCount)  { \
+    if((bDir) == PCD_EP_DBUF_OUT)\
+    {/* OUT endpoint */                                       \
+      PCD_SET_EP_RX_CNT((USBx), (bEpNum),(wCount));           \
+    }                                                         \
+    else if((bDir) == PCD_EP_DBUF_IN)\
+    {/* IN endpoint */                                        \
+      *PCD_EP_TX_CNT((USBx), (bEpNum)) = (uint32_t)(wCount); \
+    }                                                         \
+  } /* SetEPDblBuf1Count */
+
+#define PCD_SET_EP_DBUF_CNT(USBx, bEpNum, bDir, wCount) {\
+    PCD_SET_EP_DBUF0_CNT((USBx), (bEpNum), (bDir), (wCount)); \
+    PCD_SET_EP_DBUF1_CNT((USBx), (bEpNum), (bDir), (wCount)); \
+  } /* PCD_SET_EP_DBUF_CNT  */
+
+/**
+  * @brief  Gets buffer 0/1 rx/tx counter for double buffering.
+  * @param  USBx: USB peripheral instance register address.
+  * @param  bEpNum: Endpoint Number.
+  * @retval None
+  */
+#define PCD_GET_EP_DBUF0_CNT(USBx, bEpNum)     (PCD_GET_EP_TX_CNT((USBx), (bEpNum)))
+#define PCD_GET_EP_DBUF1_CNT(USBx, bEpNum)     (PCD_GET_EP_RX_CNT((USBx), (bEpNum)))
+
+#endif /* USB */
+
+/** @defgroup PCD_Instance_definition PCD Instance definition
+  * @{
+  */
+#define IS_PCD_ALL_INSTANCE                                        IS_USB_ALL_INSTANCE
+/**
+  * @}
+  */
+  
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* STM32F102x6 || STM32F102xB || */
+       /* STM32F103x6 || STM32F103xB || */
+       /* STM32F103xE || STM32F103xG || */
+       /* STM32F105xC || STM32F107xC    */
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* __STM32F1xx_HAL_PCD_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pcd_ex.h b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pcd_ex.h
new file mode 100644
index 0000000..5e13c73
--- /dev/null
+++ b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pcd_ex.h
@@ -0,0 +1,116 @@
+/**
+  ******************************************************************************
+  * @file    stm32f1xx_hal_pcd_ex.h
+  * @author  MCD Application Team
+  * @version V1.0.4
+  * @date    29-April-2016
+  * @brief   Header file of Extended PCD HAL module.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F1xx_HAL_PCD_EX_H
+#define __STM32F1xx_HAL_PCD_EX_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#if defined(STM32F102x6) || defined(STM32F102xB) || \
+    defined(STM32F103x6) || defined(STM32F103xB) || \
+    defined(STM32F103xE) || defined(STM32F103xG) || \
+    defined(STM32F105xC) || defined(STM32F107xC)
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx_hal_def.h"
+
+/** @addtogroup STM32F1xx_HAL_Driver
+  * @{
+  */
+
+/** @addtogroup PCDEx
+  * @{
+  */
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Exported macros -----------------------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup PCDEx_Exported_Functions PCDEx Exported Functions
+  * @{
+  */
+/** @addtogroup PCDEx_Exported_Functions_Group1 Peripheral Control functions
+  * @{
+  */
+#if defined (USB_OTG_FS)
+HAL_StatusTypeDef HAL_PCDEx_SetTxFiFo(PCD_HandleTypeDef *hpcd, uint8_t fifo, uint16_t size);
+HAL_StatusTypeDef HAL_PCDEx_SetRxFiFo(PCD_HandleTypeDef *hpcd, uint16_t size);
+#endif /* USB_OTG_FS */
+
+#if defined (USB)
+HAL_StatusTypeDef HAL_PCDEx_PMAConfig(PCD_HandleTypeDef *hpcd, 
+                                     uint16_t ep_addr,
+                                     uint16_t ep_kind,
+                                     uint32_t pmaadress);
+#endif /* USB */
+/**
+  * @}
+  */
+
+/** @addtogroup PCDEx_Exported_Functions_Group2 Peripheral State functions
+  * @{
+  */
+void HAL_PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state);
+/**
+  * @}
+  */
+/**
+  * @}
+  */
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */
+#endif /* STM32F102x6 || STM32F102xB || */
+       /* STM32F103x6 || STM32F103xB || */
+       /* STM32F103xE || STM32F103xG || */
+       /* STM32F105xC || STM32F107xC    */
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* __STM32F1xx_HAL_PCD_EX_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_ll_usb.h b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_ll_usb.h
new file mode 100644
index 0000000..d9d59f5
--- /dev/null
+++ b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_ll_usb.h
@@ -0,0 +1,616 @@
+/**
+  ******************************************************************************
+  * @file    stm32f1xx_ll_usb.h
+  * @author  MCD Application Team
+  * @version V1.0.4
+  * @date    29-April-2016
+  * @brief   Header file of USB Low Layer HAL module.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F1xx_LL_USB_H
+#define __STM32F1xx_LL_USB_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#if defined(STM32F102x6) || defined(STM32F102xB) || \
+    defined(STM32F103x6) || defined(STM32F103xB) || \
+    defined(STM32F103xE) || defined(STM32F103xG) || \
+    defined(STM32F105xC) || defined(STM32F107xC)
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx_hal_def.h"
+
+/** @addtogroup STM32F1xx_HAL_Driver
+  * @{
+  */
+
+/** @addtogroup USB_LL
+  * @{
+  */
+
+/* Exported types ------------------------------------------------------------*/
+/** @defgroup USB_LL_Exported_Types USB Low Layer Exported Types
+  * @{
+  */
+/** 
+  * @brief  USB Mode definition  
+  */
+typedef enum 
+{
+   USB_DEVICE_MODE  = 0,
+   USB_HOST_MODE    = 1,
+   USB_DRD_MODE     = 2
+}USB_ModeTypeDef;
+
+#if defined (USB_OTG_FS)
+/**
+  * @brief  URB States definition
+  */
+typedef enum {
+  URB_IDLE = 0,
+  URB_DONE,
+  URB_NOTREADY,
+  URB_NYET,
+  URB_ERROR,
+  URB_STALL
+}USB_OTG_URBStateTypeDef;
+
+/** 
+  * @brief  Host channel States  definition
+  */
+typedef enum {
+  HC_IDLE = 0,
+  HC_XFRC,
+  HC_HALTED,
+  HC_NAK,
+  HC_NYET,
+  HC_STALL,
+  HC_XACTERR,  
+  HC_BBLERR,   
+  HC_DATATGLERR
+}USB_OTG_HCStateTypeDef;
+
+/** 
+  * @brief  USB OTG Initialization Structure definition  
+  */
+typedef struct
+{
+  uint32_t dev_endpoints;        /*!< Device Endpoints number.
+                                      This parameter depends on the used USB core.
+                                      This parameter must be a number between Min_Data = 1 and Max_Data = 15 */
+  
+  uint32_t Host_channels;        /*!< Host Channels number.
+                                      This parameter Depends on the used USB core.   
+                                      This parameter must be a number between Min_Data = 1 and Max_Data = 15 */
+  
+  uint32_t speed;                /*!< USB Core speed.
+                                      This parameter can be any value of @ref USB_Core_Speed_                */
+  
+  uint32_t ep0_mps;              /*!< Set the Endpoint 0 Max Packet size. 
+                                      This parameter can be any value of @ref USB_EP0_MPS_                   */
+  
+  uint32_t Sof_enable;           /*!< Enable or disable the output of the SOF signal.                        */
+  
+  uint32_t low_power_enable;     /*!< Enable or disable the low power mode.                                  */
+  
+  uint32_t vbus_sensing_enable;  /*!< Enable or disable the VBUS Sensing feature.                            */
+  
+  uint32_t use_external_vbus;    /*!< Enable or disable the use of the external VBUS.                        */
+}USB_OTG_CfgTypeDef;
+
+typedef struct
+{
+  uint8_t   num;            /*!< Endpoint number
+                                This parameter must be a number between Min_Data = 1 and Max_Data = 15    */
+  
+  uint8_t   is_in;          /*!< Endpoint direction
+                                This parameter must be a number between Min_Data = 0 and Max_Data = 1     */
+  
+  uint8_t   is_stall;       /*!< Endpoint stall condition
+                                This parameter must be a number between Min_Data = 0 and Max_Data = 1     */
+  
+  uint8_t   type;           /*!< Endpoint type
+                                 This parameter can be any value of @ref USB_EP_Type_                     */
+  
+  uint8_t   data_pid_start; /*!< Initial data PID
+                                This parameter must be a number between Min_Data = 0 and Max_Data = 1     */
+  
+  uint8_t   even_odd_frame; /*!< IFrame parity
+                                 This parameter must be a number between Min_Data = 0 and Max_Data = 1    */
+  
+  uint16_t  tx_fifo_num;    /*!< Transmission FIFO number
+                                 This parameter must be a number between Min_Data = 1 and Max_Data = 15   */
+  
+  uint32_t  maxpacket;      /*!< Endpoint Max packet size
+                                 This parameter must be a number between Min_Data = 0 and Max_Data = 64KB */
+  
+  uint8_t   *xfer_buff;     /*!< Pointer to transfer buffer                                               */
+  
+  uint32_t  dma_addr;       /*!< 32 bits aligned transfer buffer address                                  */
+  
+  uint32_t  xfer_len;       /*!< Current transfer length                                                  */
+  
+  uint32_t  xfer_count;     /*!< Partial transfer length in case of multi packet transfer                 */
+}USB_OTG_EPTypeDef;
+
+typedef struct
+{
+  uint8_t   dev_addr ;     /*!< USB device address.
+                                This parameter must be a number between Min_Data = 1 and Max_Data = 255    */
+  
+  uint8_t   ch_num;        /*!< Host channel number.
+                                This parameter must be a number between Min_Data = 1 and Max_Data = 15     */
+  
+  uint8_t   ep_num;        /*!< Endpoint number.
+                                This parameter must be a number between Min_Data = 1 and Max_Data = 15     */
+  
+  uint8_t   ep_is_in;      /*!< Endpoint direction
+                                This parameter must be a number between Min_Data = 0 and Max_Data = 1      */
+  
+  uint8_t   speed;         /*!< USB Host speed.
+                                This parameter can be any value of @ref USB_Core_Speed_                    */
+  
+  uint8_t   do_ping;       /*!< Enable or disable the use of the PING protocol for HS mode.                */
+  
+  uint8_t   process_ping;  /*!< Execute the PING protocol for HS mode.                                     */
+  
+  uint8_t   ep_type;       /*!< Endpoint Type.
+                                This parameter can be any value of @ref USB_EP_Type_                       */
+  
+  uint16_t  max_packet;    /*!< Endpoint Max packet size.
+                                This parameter must be a number between Min_Data = 0 and Max_Data = 64KB   */
+  
+  uint8_t   data_pid;      /*!< Initial data PID.
+                                This parameter must be a number between Min_Data = 0 and Max_Data = 1      */
+  
+  uint8_t   *xfer_buff;    /*!< Pointer to transfer buffer.                                                */
+  
+  uint32_t  xfer_len;      /*!< Current transfer length.                                                   */
+  
+  uint32_t  xfer_count;    /*!< Partial transfer length in case of multi packet transfer.                  */
+  
+  uint8_t   toggle_in;     /*!< IN transfer current toggle flag.
+                                This parameter must be a number between Min_Data = 0 and Max_Data = 1      */
+  
+  uint8_t   toggle_out;    /*!< OUT transfer current toggle flag
+                                This parameter must be a number between Min_Data = 0 and Max_Data = 1      */
+  
+  uint32_t  dma_addr;      /*!< 32 bits aligned transfer buffer address.                                   */
+  
+  uint32_t  ErrCnt;        /*!< Host channel error count.*/
+  
+  USB_OTG_URBStateTypeDef  urb_state;  /*!< URB state.
+                                           This parameter can be any value of @ref USB_OTG_URBStateTypeDef */
+  
+  USB_OTG_HCStateTypeDef   state;     /*!< Host Channel state.
+                                           This parameter can be any value of @ref USB_OTG_HCStateTypeDef  */
+}USB_OTG_HCTypeDef;
+#endif /* USB_OTG_FS */
+
+#if defined (USB)
+/** 
+  * @brief  USB Initialization Structure definition  
+  */
+typedef struct
+{
+  uint32_t dev_endpoints;        /*!< Device Endpoints number.
+                                      This parameter depends on the used USB core.   
+                                      This parameter must be a number between Min_Data = 1 and Max_Data = 15 */
+  
+  uint32_t speed;                /*!< USB Core speed.
+                                      This parameter can be any value of @ref USB_Core_Speed                 */
+  
+  uint32_t ep0_mps;              /*!< Set the Endpoint 0 Max Packet size. 
+                                      This parameter can be any value of @ref USB_EP0_MPS                    */
+  
+  uint32_t phy_itface;           /*!< Select the used PHY interface.
+                                      This parameter can be any value of @ref USB_Core_PHY                   */
+  
+  uint32_t Sof_enable;           /*!< Enable or disable the output of the SOF signal.                        */
+  
+  uint32_t low_power_enable;       /*!< Enable or disable Low Power mode                                      */
+  
+  uint32_t lpm_enable;             /*!< Enable or disable Battery charging.                                  */
+  
+  uint32_t battery_charging_enable; /*!< Enable or disable Battery charging.                                  */
+} USB_CfgTypeDef;
+
+typedef struct
+{
+  uint8_t   num;            /*!< Endpoint number
+                                This parameter must be a number between Min_Data = 1 and Max_Data = 15    */
+  
+  uint8_t   is_in;          /*!< Endpoint direction
+                                This parameter must be a number between Min_Data = 0 and Max_Data = 1     */
+  
+  uint8_t   is_stall;       /*!< Endpoint stall condition
+                                This parameter must be a number between Min_Data = 0 and Max_Data = 1     */
+  
+  uint8_t   type;           /*!< Endpoint type
+                                 This parameter can be any value of @ref USB_EP_Type                      */
+  
+  uint16_t  pmaadress;      /*!< PMA Address
+                                 This parameter can be any value between Min_addr = 0 and Max_addr = 1K   */
+  
+  uint16_t  pmaaddr0;       /*!< PMA Address0
+                                 This parameter can be any value between Min_addr = 0 and Max_addr = 1K   */
+  
+  uint16_t  pmaaddr1;        /*!< PMA Address1
+                                 This parameter can be any value between Min_addr = 0 and Max_addr = 1K   */
+  
+  uint8_t   doublebuffer;    /*!< Double buffer enable
+                                 This parameter can be 0 or 1                                             */
+  
+  uint16_t  tx_fifo_num;    /*!< This parameter is not required by USB Device FS peripheral, it is used 
+                                 only by USB OTG FS peripheral    
+                                 This parameter is added to ensure compatibility across USB peripherals   */
+  
+  uint32_t  maxpacket;      /*!< Endpoint Max packet size
+                                 This parameter must be a number between Min_Data = 0 and Max_Data = 64KB */
+  
+  uint8_t   *xfer_buff;     /*!< Pointer to transfer buffer                                               */
+  
+  uint32_t  xfer_len;       /*!< Current transfer length                                                  */
+  
+  uint32_t  xfer_count;     /*!< Partial transfer length in case of multi packet transfer                 */
+
+} USB_EPTypeDef;
+#endif /* USB */
+/**
+  * @}
+  */
+
+/* Exported constants --------------------------------------------------------*/
+/** @defgroup USB_LL_Exported_Constants USB Low Layer Exported Constants
+  * @{
+  */
+#if defined (USB_OTG_FS)
+/** @defgroup USB_LL_Core_Mode USB Low Layer Core Mode
+  * @{
+  */
+#define USB_OTG_MODE_DEVICE                    0
+#define USB_OTG_MODE_HOST                      1
+#define USB_OTG_MODE_DRD                       2
+/**
+  * @}
+  */
+
+/** @defgroup USB_LL_Core_Speed USB Low Layer Core Speed
+  * @{
+  */
+#define USB_OTG_SPEED_LOW                      2
+#define USB_OTG_SPEED_FULL                     3
+
+/**
+  * @}
+  */
+
+/** @defgroup USB_LL_Core_PHY USB Low Layer Core PHY
+  * @{
+  */
+#define USB_OTG_ULPI_PHY                       1
+#define USB_OTG_EMBEDDED_PHY                   2
+/**
+  * @}
+  */
+
+/** @defgroup USB_LL_Core_MPS USB Low Layer Core MPS
+  * @{
+  */
+#define USB_OTG_FS_MAX_PACKET_SIZE             64
+#define USB_OTG_MAX_EP0_SIZE                   64
+/**
+  * @}
+  */
+
+/** @defgroup USB_LL_Core_PHY_Frequency USB Low Layer Core PHY Frequency
+  * @{
+  */
+#define DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ     (1 << 1)
+#define DSTS_ENUMSPD_LS_PHY_6MHZ               (2 << 1)
+#define DSTS_ENUMSPD_FS_PHY_48MHZ              (3 << 1)
+/**
+  * @}
+  */
+
+/** @defgroup USB_LL_CORE_Frame_Interval USB Low Layer Core Frame Interval
+  * @{
+  */
+#define DCFG_FRAME_INTERVAL_80                 0
+#define DCFG_FRAME_INTERVAL_85                 1
+#define DCFG_FRAME_INTERVAL_90                 2
+#define DCFG_FRAME_INTERVAL_95                 3
+/**
+  * @}
+  */
+
+/** @defgroup USB_LL_EP0_MPS USB Low Layer EP0 MPS
+  * @{
+  */
+#define DEP0CTL_MPS_64                         0
+#define DEP0CTL_MPS_32                         1
+#define DEP0CTL_MPS_16                         2
+#define DEP0CTL_MPS_8                          3
+/**
+  * @}
+  */
+
+/** @defgroup USB_LL_EP_Speed USB Low Layer EP Speed
+  * @{
+  */
+#define EP_SPEED_LOW                           0
+#define EP_SPEED_FULL                          1
+#define EP_SPEED_HIGH                          2
+/**
+  * @}
+  */
+
+/** @defgroup USB_LL_EP_Type USB Low Layer EP Type
+  * @{
+  */
+#define EP_TYPE_CTRL                           0
+#define EP_TYPE_ISOC                           1
+#define EP_TYPE_BULK                           2
+#define EP_TYPE_INTR                           3
+#define EP_TYPE_MSK                            3
+/**
+  * @}
+  */
+
+/** @defgroup USB_LL_STS_Defines USB Low Layer STS Defines
+  * @{
+  */
+#define STS_GOUT_NAK                           1
+#define STS_DATA_UPDT                          2
+#define STS_XFER_COMP                          3
+#define STS_SETUP_COMP                         4
+#define STS_SETUP_UPDT                         6
+/**
+  * @}
+  */
+
+/** @defgroup USB_LL_HCFG_SPEED_Defines USB Low Layer HCFG Speed Defines
+  * @{
+  */
+#define HCFG_30_60_MHZ                         0
+#define HCFG_48_MHZ                            1
+#define HCFG_6_MHZ                             2
+/**
+  * @}
+  */
+
+/** @defgroup USB_LL_HPRT0_PRTSPD_SPEED_Defines USB Low Layer HPRT0 PRTSPD Speed Defines
+  * @{
+  */
+#define HPRT0_PRTSPD_HIGH_SPEED                0
+#define HPRT0_PRTSPD_FULL_SPEED                1
+#define HPRT0_PRTSPD_LOW_SPEED                 2
+/**
+  * @}
+  */
+
+#define HCCHAR_CTRL                            0
+#define HCCHAR_ISOC                            1
+#define HCCHAR_BULK                            2
+#define HCCHAR_INTR                            3
+
+#define HC_PID_DATA0                           0
+#define HC_PID_DATA2                           1
+#define HC_PID_DATA1                           2
+#define HC_PID_SETUP                           3
+
+#define GRXSTS_PKTSTS_IN                       2
+#define GRXSTS_PKTSTS_IN_XFER_COMP             3
+#define GRXSTS_PKTSTS_DATA_TOGGLE_ERR          5
+#define GRXSTS_PKTSTS_CH_HALTED                7
+
+#define USBx_PCGCCTL                           *(__IO uint32_t *)((uint32_t)USBx + USB_OTG_PCGCCTL_BASE)
+#define USBx_HPRT0                             *(__IO uint32_t *)((uint32_t)USBx + USB_OTG_HOST_PORT_BASE)
+
+#define USBx_DEVICE                            ((USB_OTG_DeviceTypeDef *)((uint32_t )USBx + USB_OTG_DEVICE_BASE))
+#define USBx_INEP(i)                           ((USB_OTG_INEndpointTypeDef *)((uint32_t)USBx + USB_OTG_IN_ENDPOINT_BASE + (i)*USB_OTG_EP_REG_SIZE))
+#define USBx_OUTEP(i)                          ((USB_OTG_OUTEndpointTypeDef *)((uint32_t)USBx + USB_OTG_OUT_ENDPOINT_BASE + (i)*USB_OTG_EP_REG_SIZE))
+#define USBx_DFIFO(i)                          *(__IO uint32_t *)((uint32_t)USBx + USB_OTG_FIFO_BASE + (i) * USB_OTG_FIFO_SIZE)
+
+#define USBx_HOST                              ((USB_OTG_HostTypeDef *)((uint32_t )USBx + USB_OTG_HOST_BASE))
+#define USBx_HC(i)                             ((USB_OTG_HostChannelTypeDef *)((uint32_t)USBx + USB_OTG_HOST_CHANNEL_BASE + (i)*USB_OTG_HOST_CHANNEL_SIZE))
+#endif /* USB_OTG_FS */
+
+#if defined (USB)  
+/** @defgroup USB_LL_EP0_MPS USB Low Layer EP0 MPS
+  * @{
+  */
+#define DEP0CTL_MPS_64                         0
+#define DEP0CTL_MPS_32                         1
+#define DEP0CTL_MPS_16                         2
+#define DEP0CTL_MPS_8                          3
+/**
+  * @}
+  */ 
+
+/** @defgroup USB_LL_EP_Type USB Low Layer EP Type
+  * @{
+  */
+#define EP_TYPE_CTRL                           0
+#define EP_TYPE_ISOC                           1
+#define EP_TYPE_BULK                           2
+#define EP_TYPE_INTR                           3
+#define EP_TYPE_MSK                            3
+/**
+  * @}
+  */ 
+
+#define BTABLE_ADDRESS                         (0x000)
+#endif /* USB */
+/**
+  * @}
+  */
+
+/* Exported macros -----------------------------------------------------------*/
+/** @defgroup USB_LL_Exported_Macros USB Low Layer Exported Macros
+  * @{
+  */
+#if defined (USB_OTG_FS)
+#define USB_MASK_INTERRUPT(__INSTANCE__, __INTERRUPT__)     ((__INSTANCE__)->GINTMSK &= ~(__INTERRUPT__))
+#define USB_UNMASK_INTERRUPT(__INSTANCE__, __INTERRUPT__)   ((__INSTANCE__)->GINTMSK |= (__INTERRUPT__))
+
+#define CLEAR_IN_EP_INTR(__EPNUM__, __INTERRUPT__)          (USBx_INEP(__EPNUM__)->DIEPINT = (__INTERRUPT__))
+#define CLEAR_OUT_EP_INTR(__EPNUM__, __INTERRUPT__)         (USBx_OUTEP(__EPNUM__)->DOEPINT = (__INTERRUPT__))
+#endif /* USB_OTG_FS */
+/**
+  * @}
+  */
+
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup USB_LL_Exported_Functions USB Low Layer Exported Functions
+  * @{
+  */
+/** @addtogroup USB_LL_Exported_Functions_Group1 Peripheral Control functions
+  * @{
+  */
+#if defined (USB_OTG_FS)
+HAL_StatusTypeDef USB_CoreInit(USB_OTG_GlobalTypeDef *USBx, USB_OTG_CfgTypeDef Init);
+HAL_StatusTypeDef USB_DevInit(USB_OTG_GlobalTypeDef *USBx, USB_OTG_CfgTypeDef Init);
+HAL_StatusTypeDef USB_EnableGlobalInt(USB_OTG_GlobalTypeDef *USBx);
+HAL_StatusTypeDef USB_DisableGlobalInt(USB_OTG_GlobalTypeDef *USBx);
+HAL_StatusTypeDef USB_SetCurrentMode(USB_OTG_GlobalTypeDef *USBx , USB_ModeTypeDef mode);
+HAL_StatusTypeDef USB_SetDevSpeed(USB_OTG_GlobalTypeDef *USBx , uint8_t speed);
+HAL_StatusTypeDef USB_FlushRxFifo (USB_OTG_GlobalTypeDef *USBx);
+HAL_StatusTypeDef USB_FlushTxFifo (USB_OTG_GlobalTypeDef *USBx, uint32_t num );
+HAL_StatusTypeDef USB_ActivateEndpoint(USB_OTG_GlobalTypeDef *USBx, USB_OTG_EPTypeDef *ep);
+HAL_StatusTypeDef USB_DeactivateEndpoint(USB_OTG_GlobalTypeDef *USBx, USB_OTG_EPTypeDef *ep);
+HAL_StatusTypeDef USB_EPStartXfer(USB_OTG_GlobalTypeDef *USBx , USB_OTG_EPTypeDef *ep);
+HAL_StatusTypeDef USB_EP0StartXfer(USB_OTG_GlobalTypeDef *USBx , USB_OTG_EPTypeDef *ep);
+HAL_StatusTypeDef USB_WritePacket(USB_OTG_GlobalTypeDef *USBx, uint8_t *src, uint8_t ch_ep_num, uint16_t len);
+void *            USB_ReadPacket(USB_OTG_GlobalTypeDef *USBx, uint8_t *dest, uint16_t len);
+HAL_StatusTypeDef USB_EPSetStall(USB_OTG_GlobalTypeDef *USBx , USB_OTG_EPTypeDef *ep);
+HAL_StatusTypeDef USB_EPClearStall(USB_OTG_GlobalTypeDef *USBx , USB_OTG_EPTypeDef *ep);
+HAL_StatusTypeDef USB_SetDevAddress (USB_OTG_GlobalTypeDef *USBx, uint8_t address);
+HAL_StatusTypeDef USB_DevConnect (USB_OTG_GlobalTypeDef *USBx);
+HAL_StatusTypeDef USB_DevDisconnect (USB_OTG_GlobalTypeDef *USBx);
+HAL_StatusTypeDef USB_StopDevice(USB_OTG_GlobalTypeDef *USBx);
+HAL_StatusTypeDef USB_ActivateSetup (USB_OTG_GlobalTypeDef *USBx);
+HAL_StatusTypeDef USB_EP0_OutStart(USB_OTG_GlobalTypeDef *USBx, uint8_t *psetup);
+uint8_t           USB_GetDevSpeed(USB_OTG_GlobalTypeDef *USBx);
+uint32_t          USB_GetMode(USB_OTG_GlobalTypeDef *USBx);
+uint32_t          USB_ReadInterrupts (USB_OTG_GlobalTypeDef *USBx);
+uint32_t          USB_ReadDevAllOutEpInterrupt (USB_OTG_GlobalTypeDef *USBx);
+uint32_t          USB_ReadDevOutEPInterrupt (USB_OTG_GlobalTypeDef *USBx , uint8_t epnum);
+uint32_t          USB_ReadDevAllInEpInterrupt (USB_OTG_GlobalTypeDef *USBx);
+uint32_t          USB_ReadDevInEPInterrupt (USB_OTG_GlobalTypeDef *USBx , uint8_t epnum);
+void              USB_ClearInterrupts (USB_OTG_GlobalTypeDef *USBx, uint32_t interrupt);
+
+HAL_StatusTypeDef USB_HostInit (USB_OTG_GlobalTypeDef *USBx, USB_OTG_CfgTypeDef cfg);
+HAL_StatusTypeDef USB_InitFSLSPClkSel(USB_OTG_GlobalTypeDef *USBx , uint8_t freq);
+HAL_StatusTypeDef USB_ResetPort(USB_OTG_GlobalTypeDef *USBx);
+HAL_StatusTypeDef USB_DriveVbus (USB_OTG_GlobalTypeDef *USBx, uint8_t state);
+uint32_t          USB_GetHostSpeed (USB_OTG_GlobalTypeDef *USBx);
+uint32_t          USB_GetCurrentFrame (USB_OTG_GlobalTypeDef *USBx);
+HAL_StatusTypeDef USB_HC_Init(USB_OTG_GlobalTypeDef *USBx,  
+                              uint8_t ch_num,
+                              uint8_t epnum,
+                              uint8_t dev_address,
+                              uint8_t speed,
+                              uint8_t ep_type,
+                              uint16_t mps);
+HAL_StatusTypeDef USB_HC_StartXfer(USB_OTG_GlobalTypeDef *USBx, USB_OTG_HCTypeDef *hc);
+uint32_t          USB_HC_ReadInterrupt (USB_OTG_GlobalTypeDef *USBx);
+HAL_StatusTypeDef USB_HC_Halt(USB_OTG_GlobalTypeDef *USBx , uint8_t hc_num);
+HAL_StatusTypeDef USB_DoPing(USB_OTG_GlobalTypeDef *USBx , uint8_t ch_num);
+HAL_StatusTypeDef USB_StopHost(USB_OTG_GlobalTypeDef *USBx);
+HAL_StatusTypeDef USB_ActivateRemoteWakeup(USB_OTG_GlobalTypeDef *USBx);
+HAL_StatusTypeDef USB_DeActivateRemoteWakeup(USB_OTG_GlobalTypeDef *USBx);
+#endif /* USB_OTG_FS */
+
+#if defined (USB)
+HAL_StatusTypeDef USB_CoreInit(USB_TypeDef *USBx, USB_CfgTypeDef Init);
+HAL_StatusTypeDef USB_DevInit(USB_TypeDef *USBx, USB_CfgTypeDef Init);
+HAL_StatusTypeDef USB_EnableGlobalInt(USB_TypeDef *USBx);
+HAL_StatusTypeDef USB_DisableGlobalInt(USB_TypeDef *USBx);
+HAL_StatusTypeDef USB_SetCurrentMode(USB_TypeDef *USBx , USB_ModeTypeDef mode);
+HAL_StatusTypeDef USB_SetDevSpeed(USB_TypeDef *USBx , uint8_t speed);
+HAL_StatusTypeDef USB_FlushRxFifo (USB_TypeDef *USBx);
+HAL_StatusTypeDef USB_FlushTxFifo (USB_TypeDef *USBx, uint32_t num );
+HAL_StatusTypeDef USB_ActivateEndpoint(USB_TypeDef *USBx, USB_EPTypeDef *ep);
+HAL_StatusTypeDef USB_DeactivateEndpoint(USB_TypeDef *USBx, USB_EPTypeDef *ep);
+HAL_StatusTypeDef USB_EPStartXfer(USB_TypeDef *USBx , USB_EPTypeDef *ep);
+HAL_StatusTypeDef USB_WritePacket(USB_TypeDef *USBx, uint8_t *src, uint8_t ch_ep_num, uint16_t len);
+void *            USB_ReadPacket(USB_TypeDef *USBx, uint8_t *dest, uint16_t len);
+HAL_StatusTypeDef USB_EPSetStall(USB_TypeDef *USBx , USB_EPTypeDef *ep);
+HAL_StatusTypeDef USB_EPClearStall(USB_TypeDef *USBx , USB_EPTypeDef *ep);
+HAL_StatusTypeDef USB_SetDevAddress (USB_TypeDef *USBx, uint8_t address);
+HAL_StatusTypeDef USB_DevConnect (USB_TypeDef *USBx);
+HAL_StatusTypeDef USB_DevDisconnect (USB_TypeDef *USBx);
+HAL_StatusTypeDef USB_StopDevice(USB_TypeDef *USBx);
+HAL_StatusTypeDef USB_EP0_OutStart(USB_TypeDef *USBx, uint8_t *psetup);
+uint32_t          USB_ReadInterrupts (USB_TypeDef *USBx);
+uint32_t          USB_ReadDevAllOutEpInterrupt (USB_TypeDef *USBx);
+uint32_t          USB_ReadDevOutEPInterrupt (USB_TypeDef *USBx , uint8_t epnum);
+uint32_t          USB_ReadDevAllInEpInterrupt (USB_TypeDef *USBx);
+uint32_t          USB_ReadDevInEPInterrupt (USB_TypeDef *USBx , uint8_t epnum);
+void              USB_ClearInterrupts (USB_TypeDef *USBx, uint32_t interrupt);
+
+HAL_StatusTypeDef USB_ActivateRemoteWakeup(USB_TypeDef *USBx);
+HAL_StatusTypeDef USB_DeActivateRemoteWakeup(USB_TypeDef *USBx);
+void USB_WritePMA(USB_TypeDef  *USBx, uint8_t *pbUsrBuf, uint16_t wPMABufAddr, uint16_t wNBytes);
+void USB_ReadPMA(USB_TypeDef  *USBx, uint8_t *pbUsrBuf, uint16_t wPMABufAddr, uint16_t wNBytes);
+#endif /* USB */
+/**
+  * @}
+  */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */
+
+#endif /* STM32F102x6 || STM32F102xB || */
+       /* STM32F103x6 || STM32F103xB || */
+       /* STM32F103xE || STM32F103xG || */
+       /* STM32F105xC || STM32F107xC    */
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* __STM32F1xx_LL_USB_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c
deleted file mode 100644
index 23e0791..0000000
--- a/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c
+++ /dev/null
@@ -1,360 +0,0 @@
-/**
-  ******************************************************************************
-  * @file    stm32f1xx_hal_iwdg.c
-  * @author  MCD Application Team
-  * @version V1.0.4
-  * @date    29-April-2016
-  * @brief   IWDG HAL module driver.
-  *          This file provides firmware functions to manage the following 
-  *          functionalities of the Independent Watchdog (IWDG) peripheral:
-  *           + Initialization and Configuration functions
-  *           + IO operation functions
-  *           + Peripheral State functions
-  @verbatim 
-================================================================================
-                    ##### IWDG specific features #####
-================================================================================
-    [..] 
-    (+) The IWDG can be started by either software or hardware (configurable
-        through option byte).
-    (+) The IWDG is clocked by its own dedicated Low-Speed clock (LSI) and
-        thus stays active even if the main clock fails.
-    (+) Once the IWDG is started, the LSI is forced ON and cannot be disabled
-        (LSI cannot be disabled too), and the counter starts counting down from 
-        the reset value of 0xFFF. When it reaches the end of count value (0x000)
-        a system reset is generated.
-    (+) The IWDG counter should be refreshed at regular intervals, otherwise the
-        watchdog generates an MCU reset when the counter reaches 0.          
-    (+) The IWDG is implemented in the VDD voltage domain that is still functional
-        in STOP and STANDBY mode (IWDG reset can wake-up from STANDBY).
-    (+) IWDGRST flag in RCC_CSR register can be used to inform when an IWDG
-        reset occurs.
-
-    (+) Min-max timeout value at 40KHz (LSI): 0.1us / 26.2s .
-        The IWDG timeout may vary due to LSI frequency dispersion. STM32F1xx
-        devices provide the capability to measure the LSI frequency (LSI clock
-        connected internally to TIM5 CH4 input capture). The measured value
-        can be used to have an IWDG timeout with an acceptable accuracy.
-        For more information, please refer to the STM32F1xx Reference manual.
-        Note: LSI Calibration is only available on: High density, XL-density and Connectivity line devices.
-
-                     ##### How to use this driver #####
-  ==============================================================================
-    [..]
-    (+) Use IWDG using HAL_IWDG_Init() function to :
-        (++) Enable write access to IWDG_PR, IWDG_RLR.   
-        (++) Configure the IWDG prescaler, counter reload value.
-             This reload value will be loaded in the IWDG counter each time the counter
-             is reloaded, then the IWDG will start counting down from this value.
-    (+) Use IWDG using HAL_IWDG_Start() function to :
-        (++) Reload IWDG counter with value defined in the IWDG_RLR register.
-        (++) Start the IWDG, when the IWDG is used in software mode (no need 
-             to enable the LSI, it will be enabled by hardware).
-    (+) Then the application program must refresh the IWDG counter at regular
-        intervals during normal operation to prevent an MCU reset, using
-        HAL_IWDG_Refresh() function.    
-    
-     *** IWDG HAL driver macros list ***
-     ====================================
-     [..]
-       Below the list of most used macros in IWDG HAL driver.
-       
-      (+) __HAL_IWDG_START: Enable the IWDG peripheral
-      (+) __HAL_IWDG_RELOAD_COUNTER: Reloads IWDG counter with value defined in the reload register    
-      (+) __HAL_IWDG_GET_FLAG: Get the selected IWDG's flag status
-
-  @endverbatim
-  ******************************************************************************
-  * @attention
-  *
-  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
-  *
-  * Redistribution and use in source and binary forms, with or without modification,
-  * are permitted provided that the following conditions are met:
-  *   1. Redistributions of source code must retain the above copyright notice,
-  *      this list of conditions and the following disclaimer.
-  *   2. Redistributions in binary form must reproduce the above copyright notice,
-  *      this list of conditions and the following disclaimer in the documentation
-  *      and/or other materials provided with the distribution.
-  *   3. Neither the name of STMicroelectronics nor the names of its contributors
-  *      may be used to endorse or promote products derived from this software
-  *      without specific prior written permission.
-  *
-  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-  *
-  ******************************************************************************
-  */ 
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32f1xx_hal.h"
-
-/** @addtogroup STM32F1xx_HAL_Driver
-  * @{
-  */
-
-/** @defgroup IWDG IWDG
-  * @brief IWDG HAL module driver.
-  * @{
-  */
-
-#ifdef HAL_IWDG_MODULE_ENABLED
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-
-/** @defgroup IWDG_Private_Constants IWDG Private Constants
-  * @{
-  */
-
-#define IWDG_DEFAULT_TIMEOUT (uint32_t)1000
-
-/**
-  * @}
-  */
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/* Private functions ---------------------------------------------------------*/
-
-/** @defgroup IWDG_Exported_Functions IWDG Exported Functions
-  * @{
-  */
-
-/** @defgroup IWDG_Exported_Functions_Group1 Initialization and de-initialization functions 
- *  @brief    Initialization and Configuration functions. 
- *
-@verbatim    
- ===============================================================================
-          ##### Initialization and de-initialization functions #####
- ===============================================================================
-    [..]  This section provides functions allowing to:
-      (+) Initialize the IWDG according to the specified parameters 
-          in the IWDG_InitTypeDef and create the associated handle
-      (+) Initialize the IWDG MSP
-      (+) DeInitialize IWDG MSP 
- 
-@endverbatim
-  * @{
-  */
-
-/**
-  * @brief  Initializes the IWDG according to the specified
-  *         parameters in the IWDG_InitTypeDef and creates the associated handle.
-  * @param  hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
-  *                the configuration information for the specified IWDG module.
-  * @retval HAL status
-  */
-HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg)
-{
-  /* Check the IWDG handle allocation */
-  if(hiwdg == NULL)
-  {
-    return HAL_ERROR;
-  }
-
-  /* Check the parameters */
-  assert_param(IS_IWDG_ALL_INSTANCE(hiwdg->Instance));
-  assert_param(IS_IWDG_PRESCALER(hiwdg->Init.Prescaler));
-  assert_param(IS_IWDG_RELOAD(hiwdg->Init.Reload)); 
-  
-  /* Check pending flag, if previous update not done, return error */
-  if((__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_PVU) != RESET)
-     &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET))
-  {
-    return HAL_ERROR;
-  }
-    
-  if(hiwdg->State == HAL_IWDG_STATE_RESET)
-  {  
-    /* Allocate lock resource and initialize it */
-    hiwdg->Lock = HAL_UNLOCKED;
-    
-    /* Init the low level hardware */
-    HAL_IWDG_MspInit(hiwdg);
-  }
-  
-  /* Change IWDG peripheral state */
-  hiwdg->State = HAL_IWDG_STATE_BUSY;  
-  
-  /* Enable write access to IWDG_PR and IWDG_RLR registers */  
-  IWDG_ENABLE_WRITE_ACCESS(hiwdg);
-  
-  /* Write to IWDG registers the IWDG_Prescaler & IWDG_Reload values to work with */
-  MODIFY_REG(hiwdg->Instance->PR, IWDG_PR_PR, hiwdg->Init.Prescaler);
-  MODIFY_REG(hiwdg->Instance->RLR, IWDG_RLR_RL, hiwdg->Init.Reload);
- 
-  /* Change IWDG peripheral state */
-  hiwdg->State = HAL_IWDG_STATE_READY;
-  
-  /* Return function status */
-  return HAL_OK;
-}
-
-/**
-  * @brief  Initializes the IWDG MSP.
-  * @param  hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
-  *                the configuration information for the specified IWDG module.
-  * @retval None
-  */
-__weak void HAL_IWDG_MspInit(IWDG_HandleTypeDef *hiwdg)
-{
-  /* Prevent unused argument(s) compilation warning */
-  UNUSED(hiwdg);
-  /* NOTE : This function Should not be modified, when the callback is needed,
-            the HAL_IWDG_MspInit could be implemented in the user file
-   */
-}
-
-/**
-  * @}
-  */
-
-/** @defgroup IWDG_Exported_Functions_Group2 IO operation functions  
- *  @brief   IO operation functions  
- *
-@verbatim   
- ===============================================================================
-                      ##### IO operation functions #####
- ===============================================================================  
-    [..]  This section provides functions allowing to:
-      (+) Start the IWDG.
-      (+) Refresh the IWDG.
-
-@endverbatim
-  * @{
-  */
-
-/**
-  * @brief  Starts the IWDG.
-  * @param  hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
-  *                the configuration information for the specified IWDG module.
-  * @retval HAL status
-  */
-HAL_StatusTypeDef HAL_IWDG_Start(IWDG_HandleTypeDef *hiwdg)
-{
-  /* Process Locked */
-  __HAL_LOCK(hiwdg); 
-  
-    /* Change IWDG peripheral state */  
-  hiwdg->State = HAL_IWDG_STATE_BUSY;
-
-  /* Start the IWDG peripheral */
-  __HAL_IWDG_START(hiwdg);
-  
-    /* Reload IWDG counter with value defined in the RLR register */
-  __HAL_IWDG_RELOAD_COUNTER(hiwdg);
-  
-  /* Change IWDG peripheral state */    
-  hiwdg->State = HAL_IWDG_STATE_READY; 
-  
-  /* Process Unlocked */
-  __HAL_UNLOCK(hiwdg);
-  
-  /* Return function status */
-  return HAL_OK;
-}
-
-/**
-  * @brief  Refreshes the IWDG.
-  * @param  hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
-  *                the configuration information for the specified IWDG module.
-  * @retval HAL status
-  */
-HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg)
-{
-  uint32_t tickstart = 0;
-
-  /* Process Locked */
-  __HAL_LOCK(hiwdg);
-
-    /* Change IWDG peripheral state */
-  hiwdg->State = HAL_IWDG_STATE_BUSY;
-
-  tickstart = HAL_GetTick();
-
-  /* Wait until RVU flag is RESET */
-  while(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)
-  {
-    if((HAL_GetTick() - tickstart ) > IWDG_DEFAULT_TIMEOUT)
-    {
-      /* Set IWDG state */
-      hiwdg->State = HAL_IWDG_STATE_TIMEOUT;
-
-       /* Process unlocked */
-      __HAL_UNLOCK(hiwdg);
-
-      return HAL_TIMEOUT;
-    }
-  }
-  
-  /* Reload IWDG counter with value defined in the reload register */
-  __HAL_IWDG_RELOAD_COUNTER(hiwdg);
-    
-  /* Change IWDG peripheral state */    
-  hiwdg->State = HAL_IWDG_STATE_READY; 
-  
-  /* Process Unlocked */
-  __HAL_UNLOCK(hiwdg);
-  
-  /* Return function status */
-  return HAL_OK;
-}
-
-/**
-  * @}
-  */
-
-/** @defgroup IWDG_Exported_Functions_Group3 Peripheral State functions 
- *  @brief    Peripheral State functions. 
- *
-@verbatim   
- ===============================================================================
-                      ##### Peripheral State functions #####
- ===============================================================================  
-    [..]
-    This subsection permits to get in run-time the status of the peripheral 
-    and the data flow.
-
-@endverbatim
-  * @{
-  */
-
-/**
-  * @brief  Returns the IWDG state.
-  * @param  hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
-  *                the configuration information for the specified IWDG module.
-  * @retval HAL state
-  */
-HAL_IWDG_StateTypeDef HAL_IWDG_GetState(IWDG_HandleTypeDef *hiwdg)
-{
-  return hiwdg->State;
-}
-
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-#endif /* HAL_IWDG_MODULE_ENABLED */
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd.c b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd.c
new file mode 100644
index 0000000..91461a3
--- /dev/null
+++ b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd.c
@@ -0,0 +1,1440 @@
+/**
+  ******************************************************************************
+  * @file    stm32f1xx_hal_pcd.c
+  * @author  MCD Application Team
+  * @version V1.0.4
+  * @date    29-April-2016
+  * @brief   PCD HAL module driver.
+  *          This file provides firmware functions to manage the following 
+  *          functionalities of the USB Peripheral Controller:
+  *           + Initialization and de-initialization functions
+  *           + IO operation functions
+  *           + Peripheral Control functions 
+  *           + Peripheral State functions
+  *
+  @verbatim
+  ==============================================================================
+                    ##### How to use this driver #####
+  ==============================================================================
+    [..]
+      The PCD HAL driver can be used as follows:
+
+     (#) Declare a PCD_HandleTypeDef handle structure, for example:
+         PCD_HandleTypeDef  hpcd;
+
+     (#) Fill parameters of Init structure in HCD handle
+
+     (#) Call HAL_PCD_Init() API to initialize the HCD peripheral (Core, Device core, ...)
+
+     (#) Initialize the PCD low level resources through the HAL_PCD_MspInit() API:
+         (##) Enable the PCD/USB Low Level interface clock using the following macro
+              (+++) __HAL_RCC_USB_CLK_ENABLE(); For USB Device FS peripheral available
+                    on STM32F102xx and STM32F103xx devices
+              (+++) __HAL_RCC_USB_OTG_FS_CLK_ENABLE(); For USB OTG FS peripheral available
+                    on STM32F105xx and STM32F107xx devices 
+
+         (##) Initialize the related GPIO clocks
+         (##) Configure PCD pin-out
+         (##) Configure PCD NVIC interrupt
+
+     (#)Associate the Upper USB device stack to the HAL PCD Driver:
+         (##) hpcd.pData = pdev;
+
+     (#)Enable HCD transmission and reception:
+         (##) HAL_PCD_Start();
+
+  @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx_hal.h"
+
+/** @addtogroup STM32F1xx_HAL_Driver
+  * @{
+  */
+
+
+
+#ifdef HAL_PCD_MODULE_ENABLED
+
+#if defined(STM32F102x6) || defined(STM32F102xB) || \
+    defined(STM32F103x6) || defined(STM32F103xB) || \
+    defined(STM32F103xE) || defined(STM32F103xG) || \
+    defined(STM32F105xC) || defined(STM32F107xC)
+
+/** @defgroup PCD PCD
+  * @brief PCD HAL module driver
+  * @{
+  */
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/** @defgroup PCD_Private_Macros PCD Private Macros
+  * @{
+  */ 
+#define PCD_MIN(a, b)  (((a) < (b)) ? (a) : (b))
+#define PCD_MAX(a, b)  (((a) > (b)) ? (a) : (b))
+/**
+  * @}
+  */
+
+/* Private functions ---------------------------------------------------------*/
+/** @defgroup PCD_Private_Functions PCD Private Functions
+  * @{
+  */
+#if defined (USB_OTG_FS)
+static HAL_StatusTypeDef PCD_WriteEmptyTxFifo(PCD_HandleTypeDef *hpcd, uint32_t epnum);
+#endif /* USB_OTG_FS */
+
+#if defined (USB)
+static HAL_StatusTypeDef PCD_EP_ISR_Handler(PCD_HandleTypeDef *hpcd);
+#endif /* USB */
+/**
+  * @}
+  */
+
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup PCD_Exported_Functions PCD Exported Functions
+  * @{
+  */
+
+/** @defgroup PCD_Exported_Functions_Group1 Initialization and de-initialization functions 
+ *  @brief    Initialization and Configuration functions 
+ *
+@verbatim
+ ===============================================================================
+            ##### Initialization and de-initialization functions #####
+ ===============================================================================
+    [..]  This section provides functions allowing to:
+ 
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Initializes the PCD according to the specified
+  *         parameters in the PCD_InitTypeDef and create the associated handle.
+  * @param  hpcd: PCD handle
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_Init(PCD_HandleTypeDef *hpcd)
+{
+  uint32_t index = 0;
+  
+  /* Check the PCD handle allocation */
+  if(hpcd == NULL)
+  {
+    return HAL_ERROR;
+  }
+  
+  /* Check the parameters */
+  assert_param(IS_PCD_ALL_INSTANCE(hpcd->Instance));
+
+  if(hpcd->State == HAL_PCD_STATE_RESET)
+  {  
+    /* Allocate lock resource and initialize it */
+    hpcd->Lock = HAL_UNLOCKED;
+
+    /* Init the low level hardware : GPIO, CLOCK, NVIC... */
+    HAL_PCD_MspInit(hpcd);
+  }
+  
+  hpcd->State = HAL_PCD_STATE_BUSY;
+  
+  /* Disable the Interrupts */
+  __HAL_PCD_DISABLE(hpcd);
+  
+  /*Init the Core (common init.) */
+  USB_CoreInit(hpcd->Instance, hpcd->Init);
+ 
+  /* Force Device Mode*/
+  USB_SetCurrentMode(hpcd->Instance , USB_DEVICE_MODE);
+ 
+  /* Init endpoints structures */
+  for (index = 0; index < 15 ; index++)
+  {
+    /* Init ep structure */
+    hpcd->IN_ep[index].is_in = 1;
+    hpcd->IN_ep[index].num = index;
+    hpcd->IN_ep[index].tx_fifo_num = index;
+    /* Control until ep is actvated */
+    hpcd->IN_ep[index].type = EP_TYPE_CTRL;
+    hpcd->IN_ep[index].maxpacket =  0;
+    hpcd->IN_ep[index].xfer_buff = 0;
+    hpcd->IN_ep[index].xfer_len = 0;
+  }
+  
+  for (index = 0; index < 15 ; index++)
+  {
+    hpcd->OUT_ep[index].is_in = 0;
+    hpcd->OUT_ep[index].num = index;
+    hpcd->IN_ep[index].tx_fifo_num = index;
+    /* Control until ep is activated */
+    hpcd->OUT_ep[index].type = EP_TYPE_CTRL;
+    hpcd->OUT_ep[index].maxpacket = 0;
+    hpcd->OUT_ep[index].xfer_buff = 0;
+    hpcd->OUT_ep[index].xfer_len = 0;
+  }
+  
+  /* Init Device */
+  USB_DevInit(hpcd->Instance, hpcd->Init);
+  
+  hpcd->USB_Address = 0;
+  hpcd->State= HAL_PCD_STATE_READY;
+  
+  USB_DevDisconnect (hpcd->Instance);  
+  return HAL_OK;
+}
+
+/**
+  * @brief  DeInitializes the PCD peripheral 
+  * @param  hpcd: PCD handle
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_DeInit(PCD_HandleTypeDef *hpcd)
+{
+  /* Check the PCD handle allocation */
+  if(hpcd == NULL)
+  {
+    return HAL_ERROR;
+  }
+  
+  hpcd->State = HAL_PCD_STATE_BUSY;
+  
+  /* Stop Device */
+  HAL_PCD_Stop(hpcd);
+  
+  /* DeInit the low level hardware */
+  HAL_PCD_MspDeInit(hpcd);
+  
+  hpcd->State = HAL_PCD_STATE_RESET; 
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Initializes the PCD MSP.
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+__weak void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_PCD_MspInit could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  DeInitializes PCD MSP.
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+__weak void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_PCD_MspDeInit could be implemented in the user file
+   */
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup PCD_Exported_Functions_Group2 IO operation functions 
+ *  @brief   Data transfers functions 
+ *
+@verbatim
+ ===============================================================================
+                      ##### IO operation functions #####
+ ===============================================================================
+    [..]
+    This subsection provides a set of functions allowing to manage the PCD data 
+    transfers.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Start The USB Device.
+  * @param  hpcd: PCD handle
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_Start(PCD_HandleTypeDef *hpcd)
+{
+  __HAL_LOCK(hpcd);
+  HAL_PCDEx_SetConnectionState (hpcd, 1);
+  USB_DevConnect (hpcd->Instance);
+  __HAL_PCD_ENABLE(hpcd);
+  __HAL_UNLOCK(hpcd);
+  return HAL_OK;
+}
+
+/**
+  * @brief  Stop The USB Device.
+  * @param  hpcd: PCD handle
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_Stop(PCD_HandleTypeDef *hpcd)
+{  
+  __HAL_LOCK(hpcd);
+  __HAL_PCD_DISABLE(hpcd);
+  USB_StopDevice(hpcd->Instance);
+  USB_DevDisconnect (hpcd->Instance);
+  __HAL_UNLOCK(hpcd);
+  return HAL_OK;
+}
+
+#if defined (USB_OTG_FS)
+/**
+  * @brief  This function handles PCD interrupt request.
+  * @param  hpcd: PCD handle
+  * @retval HAL status
+  */
+void HAL_PCD_IRQHandler(PCD_HandleTypeDef *hpcd)
+{
+  USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
+  uint32_t index = 0, ep_intr = 0, epint = 0, epnum = 0;
+  uint32_t fifoemptymsk = 0, temp = 0;
+  USB_OTG_EPTypeDef *ep = NULL;
+  
+  /* ensure that we are in device mode */
+  if (USB_GetMode(hpcd->Instance) == USB_OTG_MODE_DEVICE)
+  {
+    /* avoid spurious interrupt */
+    if(__HAL_PCD_IS_INVALID_INTERRUPT(hpcd))
+    {
+      return;
+    }
+    
+    if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_MMIS))
+    {
+     /* incorrect mode, acknowledge the interrupt */
+      __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_MMIS);
+    }
+    
+    if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_OEPINT))
+    {
+      epnum = 0;
+      
+      /* Read in the device interrupt bits */
+      ep_intr = USB_ReadDevAllOutEpInterrupt(hpcd->Instance);
+      
+      while ( ep_intr )
+      {
+        if (ep_intr & 0x1)
+        {
+          epint = USB_ReadDevOutEPInterrupt(hpcd->Instance, epnum);
+          
+          if(( epint & USB_OTG_DOEPINT_XFRC) == USB_OTG_DOEPINT_XFRC)
+          {
+            CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_XFRC);
+            
+            HAL_PCD_DataOutStageCallback(hpcd, epnum);
+          }
+          
+          if(( epint & USB_OTG_DOEPINT_STUP) == USB_OTG_DOEPINT_STUP)
+          {
+            /* Inform the upper layer that a setup packet is available */
+            HAL_PCD_SetupStageCallback(hpcd);
+            CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_STUP);
+          }
+          
+          if(( epint & USB_OTG_DOEPINT_OTEPDIS) == USB_OTG_DOEPINT_OTEPDIS)
+          {
+            CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_OTEPDIS);
+          }
+        }
+        epnum++;
+        ep_intr >>= 1;
+      }
+    }
+    
+    if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_IEPINT))
+    {
+      /* Read in the device interrupt bits */
+      ep_intr = USB_ReadDevAllInEpInterrupt(hpcd->Instance);
+      
+      epnum = 0;
+      
+      while ( ep_intr )
+      {
+        if (ep_intr & 0x1) /* In ITR */
+        {
+          epint = USB_ReadDevInEPInterrupt(hpcd->Instance, epnum);
+          
+          if(( epint & USB_OTG_DIEPINT_XFRC) == USB_OTG_DIEPINT_XFRC)
+          {
+            fifoemptymsk = 0x1 << epnum;
+            USBx_DEVICE->DIEPEMPMSK &= ~fifoemptymsk;
+            
+            CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_XFRC);
+            
+            HAL_PCD_DataInStageCallback(hpcd, epnum);
+          }
+          if(( epint & USB_OTG_DIEPINT_TOC) == USB_OTG_DIEPINT_TOC)
+          {
+            CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_TOC);
+          }
+          if(( epint & USB_OTG_DIEPINT_ITTXFE) == USB_OTG_DIEPINT_ITTXFE)
+          {
+            CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_ITTXFE);
+          }
+          if(( epint & USB_OTG_DIEPINT_INEPNE) == USB_OTG_DIEPINT_INEPNE)
+          {
+            CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_INEPNE);
+          }
+          if(( epint & USB_OTG_DIEPINT_EPDISD) == USB_OTG_DIEPINT_EPDISD)
+          {
+            CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_EPDISD);
+          }
+          if(( epint & USB_OTG_DIEPINT_TXFE) == USB_OTG_DIEPINT_TXFE)
+          {
+            PCD_WriteEmptyTxFifo(hpcd , epnum);
+          }
+        }
+        epnum++;
+        ep_intr >>= 1;
+      }
+    }
+    
+    /* Handle Resume Interrupt */
+    if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_WKUINT))
+    {
+     /* Clear the Remote Wake-up signalling */
+      USBx_DEVICE->DCTL &= ~USB_OTG_DCTL_RWUSIG;
+     
+     HAL_PCD_ResumeCallback(hpcd);
+     
+     __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_WKUINT);
+    }
+    
+    /* Handle Suspend Interrupt */
+    if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_USBSUSP))
+    {
+      if((USBx_DEVICE->DSTS & USB_OTG_DSTS_SUSPSTS) == USB_OTG_DSTS_SUSPSTS)
+      {
+        
+        HAL_PCD_SuspendCallback(hpcd);
+      }
+      __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_USBSUSP);
+    }
+    
+    /* Handle Reset Interrupt */
+    if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_USBRST))
+    {
+      USBx_DEVICE->DCTL &= ~USB_OTG_DCTL_RWUSIG; 
+      USB_FlushTxFifo(hpcd->Instance ,  0 );
+      
+      for (index = 0; index < hpcd->Init.dev_endpoints ; index++)
+      {
+        USBx_INEP(index)->DIEPINT = 0xFF;
+        USBx_OUTEP(index)->DOEPINT = 0xFF;
+      }
+      USBx_DEVICE->DAINT = 0xFFFFFFFF;
+      USBx_DEVICE->DAINTMSK |= 0x10001;
+      
+      USBx_DEVICE->DOEPMSK |= (USB_OTG_DOEPMSK_STUPM | USB_OTG_DOEPMSK_XFRCM | USB_OTG_DOEPMSK_EPDM);
+      USBx_DEVICE->DIEPMSK |= (USB_OTG_DIEPMSK_TOM | USB_OTG_DIEPMSK_XFRCM | USB_OTG_DIEPMSK_EPDM);
+      
+      /* Set Default Address to 0 */
+      USBx_DEVICE->DCFG &= ~USB_OTG_DCFG_DAD;
+      
+      /* setup EP0 to receive SETUP packets */
+      USB_EP0_OutStart(hpcd->Instance, (uint8_t *)hpcd->Setup);
+      
+      __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_USBRST);
+    }
+    
+    /* Handle Enumeration done Interrupt */
+    if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_ENUMDNE))
+    {
+      USB_ActivateSetup(hpcd->Instance);
+      hpcd->Instance->GUSBCFG &= ~USB_OTG_GUSBCFG_TRDT;
+      
+      hpcd->Init.speed            = USB_OTG_SPEED_FULL;
+      hpcd->Init.ep0_mps          = USB_OTG_FS_MAX_PACKET_SIZE ;
+      hpcd->Instance->GUSBCFG |= (uint32_t)((USBD_FS_TRDT_VALUE << 10) & USB_OTG_GUSBCFG_TRDT);
+      
+      HAL_PCD_ResetCallback(hpcd);
+      
+      __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_ENUMDNE);
+    }
+    
+    /* Handle RxQLevel Interrupt */
+    if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_RXFLVL))
+    {
+      USB_MASK_INTERRUPT(hpcd->Instance, USB_OTG_GINTSTS_RXFLVL);
+      temp = USBx->GRXSTSP;
+      ep = &hpcd->OUT_ep[temp & USB_OTG_GRXSTSP_EPNUM];
+      
+      if(((temp & USB_OTG_GRXSTSP_PKTSTS) >> 17) ==  STS_DATA_UPDT)
+      {
+        if((temp & USB_OTG_GRXSTSP_BCNT) != 0)
+        {
+          USB_ReadPacket(USBx, ep->xfer_buff, (temp & USB_OTG_GRXSTSP_BCNT) >> 4);
+          ep->xfer_buff += (temp & USB_OTG_GRXSTSP_BCNT) >> 4;
+          ep->xfer_count += (temp & USB_OTG_GRXSTSP_BCNT) >> 4;
+        }
+      }
+      else if (((temp & USB_OTG_GRXSTSP_PKTSTS) >> 17) ==  STS_SETUP_UPDT)
+      {
+        USB_ReadPacket(USBx, (uint8_t *)hpcd->Setup, 8);
+        ep->xfer_count += (temp & USB_OTG_GRXSTSP_BCNT) >> 4;
+      }
+      USB_UNMASK_INTERRUPT(hpcd->Instance, USB_OTG_GINTSTS_RXFLVL);
+    }
+    
+    /* Handle SOF Interrupt */
+    if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_SOF))
+    {
+      HAL_PCD_SOFCallback(hpcd);
+      __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_SOF);
+    }
+    
+    /* Handle Incomplete ISO IN Interrupt */
+    if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_IISOIXFR))
+    {
+      HAL_PCD_ISOINIncompleteCallback(hpcd, epnum);
+      __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_IISOIXFR);
+    }
+    
+    /* Handle Incomplete ISO OUT Interrupt */
+    if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_PXFR_INCOMPISOOUT))
+    {
+      HAL_PCD_ISOOUTIncompleteCallback(hpcd, epnum);
+      __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_PXFR_INCOMPISOOUT);
+    }
+    
+    /* Handle Connection event Interrupt */
+    if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_SRQINT))
+    {
+      HAL_PCD_ConnectCallback(hpcd);
+      __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_SRQINT);
+    }
+    
+    /* Handle Disconnection event Interrupt */
+    if(__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_OTGINT))
+    {
+      temp = hpcd->Instance->GOTGINT;
+      
+      if((temp & USB_OTG_GOTGINT_SEDET) == USB_OTG_GOTGINT_SEDET)
+      {
+        HAL_PCD_DisconnectCallback(hpcd);
+      }
+      hpcd->Instance->GOTGINT |= temp;
+    }
+  }
+}
+#endif /* USB_OTG_FS */
+
+#if defined (USB)
+/**
+  * @brief  This function handles PCD interrupt request.
+  * @param  hpcd: PCD handle
+  * @retval HAL status
+  */
+void HAL_PCD_IRQHandler(PCD_HandleTypeDef *hpcd)
+{
+  uint32_t wInterrupt_Mask = 0;
+  
+  if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_CTR))
+  {
+    /* servicing of the endpoint correct transfer interrupt */
+    /* clear of the CTR flag into the sub */
+    PCD_EP_ISR_Handler(hpcd);
+  }
+
+  if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_RESET))
+  {
+    __HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_RESET);
+    HAL_PCD_ResetCallback(hpcd);
+    HAL_PCD_SetAddress(hpcd, 0);
+  }
+
+  if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_PMAOVR))
+  {
+    __HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_PMAOVR);    
+  }
+  if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_ERR))
+  {
+    __HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_ERR); 
+  }
+
+  if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_WKUP))
+  {  
+    hpcd->Instance->CNTR &= ~(USB_CNTR_LP_MODE);
+    
+    /*set wInterrupt_Mask global variable*/
+    wInterrupt_Mask = USB_CNTR_CTRM  | USB_CNTR_WKUPM | USB_CNTR_SUSPM | USB_CNTR_ERRM \
+      | USB_CNTR_ESOFM | USB_CNTR_RESETM;
+    
+    /*Set interrupt mask*/
+    hpcd->Instance->CNTR = wInterrupt_Mask;
+    
+    HAL_PCD_ResumeCallback(hpcd);
+    
+    __HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_WKUP);     
+  }
+
+  if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_SUSP))
+  {
+    /* clear of the ISTR bit must be done after setting of CNTR_FSUSP */
+    __HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_SUSP);  
+    
+    /* Force low-power mode in the macrocell */
+    hpcd->Instance->CNTR |= USB_CNTR_FSUSP;
+    hpcd->Instance->CNTR |= USB_CNTR_LP_MODE;
+    if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_WKUP) == 0)
+    {
+      HAL_PCD_SuspendCallback(hpcd);
+    }
+  }
+
+  if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_SOF))
+  {
+    __HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_SOF); 
+    HAL_PCD_SOFCallback(hpcd);
+  }
+
+  if (__HAL_PCD_GET_FLAG (hpcd, USB_ISTR_ESOF))
+  {
+    /* clear ESOF flag in ISTR */
+    __HAL_PCD_CLEAR_FLAG(hpcd, USB_ISTR_ESOF); 
+  }
+}
+#endif /* USB */
+
+/**
+  * @brief  Data out stage callbacks
+  * @param  hpcd: PCD handle
+  * @param  epnum: endpoint number
+  * @retval None
+  */
+ __weak void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  UNUSED(epnum);
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_PCD_DataOutStageCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  Data IN stage callbacks
+  * @param  hpcd: PCD handle
+  * @param  epnum: endpoint number
+  * @retval None
+  */
+ __weak void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  UNUSED(epnum);
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_PCD_DataInStageCallback could be implemented in the user file
+   */
+}
+/**
+  * @brief  Setup stage callback
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+ __weak void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_PCD_SetupStageCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  USB Start Of Frame callbacks
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+ __weak void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_PCD_SOFCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  USB Reset callbacks
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+ __weak void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_PCD_ResetCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  Suspend event callbacks
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+ __weak void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_PCD_SuspendCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  Resume event callbacks
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+ __weak void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_PCD_ResumeCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  Incomplete ISO OUT callbacks
+  * @param  hpcd: PCD handle
+  * @param  epnum: endpoint number
+  * @retval None
+  */
+ __weak void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  UNUSED(epnum);
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_PCD_ISOOUTIncompleteCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  Incomplete ISO IN  callbacks
+  * @param  hpcd: PCD handle
+  * @param  epnum: endpoint number
+  * @retval None
+  */
+ __weak void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  UNUSED(epnum);
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_PCD_ISOINIncompleteCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  Connection event callbacks
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+ __weak void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_PCD_ConnectCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  Disconnection event callbacks
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+ __weak void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  /* NOTE : This function should not be modified, when the callback is needed,
+            the HAL_PCD_DisconnectCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup PCD_Exported_Functions_Group3 Peripheral Control functions
+ *  @brief   management functions
+ *
+@verbatim
+ ===============================================================================
+                      ##### Peripheral Control functions #####
+ ===============================================================================  
+    [..]
+    This subsection provides a set of functions allowing to control the PCD data 
+    transfers.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Connect the USB device
+  * @param  hpcd: PCD handle
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_DevConnect(PCD_HandleTypeDef *hpcd)
+{
+  __HAL_LOCK(hpcd);
+  HAL_PCDEx_SetConnectionState (hpcd, 1);
+  USB_DevConnect(hpcd->Instance);
+  __HAL_UNLOCK(hpcd);
+  return HAL_OK;
+}
+
+/**
+  * @brief  Disconnect the USB device
+  * @param  hpcd: PCD handle
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_DevDisconnect(PCD_HandleTypeDef *hpcd)
+{
+  __HAL_LOCK(hpcd);
+  HAL_PCDEx_SetConnectionState (hpcd, 0);
+  USB_DevDisconnect(hpcd->Instance);
+  __HAL_UNLOCK(hpcd);
+  return HAL_OK;
+}
+
+/**
+  * @brief  Set the USB Device address
+  * @param  hpcd: PCD handle
+  * @param  address: new device address
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_SetAddress(PCD_HandleTypeDef *hpcd, uint8_t address)
+{
+  __HAL_LOCK(hpcd);
+  hpcd->USB_Address = address;
+  USB_SetDevAddress(hpcd->Instance, address);
+  __HAL_UNLOCK(hpcd);
+  return HAL_OK;
+}
+/**
+  * @brief  Open and configure an endpoint
+  * @param  hpcd: PCD handle
+  * @param  ep_addr: endpoint address
+  * @param  ep_mps: endpoint max packet size
+  * @param  ep_type: endpoint type   
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_EP_Open(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint16_t ep_mps, uint8_t ep_type)
+{
+  HAL_StatusTypeDef  ret = HAL_OK;
+  PCD_EPTypeDef *ep = NULL;
+  
+  if ((ep_addr & 0x80) == 0x80)
+  {
+    ep = &hpcd->IN_ep[ep_addr & 0x7F];
+  }
+  else
+  {
+    ep = &hpcd->OUT_ep[ep_addr & 0x7F];
+  }
+  ep->num   = ep_addr & 0x7F;
+  
+  ep->is_in = (0x80 & ep_addr) != 0;
+  ep->maxpacket = ep_mps;
+  ep->type = ep_type;
+    
+  __HAL_LOCK(hpcd);
+  USB_ActivateEndpoint(hpcd->Instance , ep);
+  __HAL_UNLOCK(hpcd);
+  return ret;
+}
+
+/**
+  * @brief  Deactivate an endpoint
+  * @param  hpcd: PCD handle
+  * @param  ep_addr: endpoint address
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_EP_Close(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
+{  
+  PCD_EPTypeDef *ep = NULL;
+  
+  if ((ep_addr & 0x80) == 0x80)
+  {
+    ep = &hpcd->IN_ep[ep_addr & 0x7F];
+  }
+  else
+  {
+    ep = &hpcd->OUT_ep[ep_addr & 0x7F];
+  }
+  ep->num   = ep_addr & 0x7F;
+  
+  ep->is_in = (0x80 & ep_addr) != 0;
+  
+  __HAL_LOCK(hpcd);
+  USB_DeactivateEndpoint(hpcd->Instance , ep);
+  __HAL_UNLOCK(hpcd);
+  return HAL_OK;
+}
+
+
+/**
+  * @brief  Receive an amount of data
+  * @param  hpcd: PCD handle
+  * @param  ep_addr: endpoint address
+  * @param  pBuf: pointer to the reception buffer
+  * @param  len: amount of data to be received
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_EP_Receive(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len)
+{
+  PCD_EPTypeDef *ep = NULL;
+  
+  ep = &hpcd->OUT_ep[ep_addr & 0x7F];
+  
+  /*setup and start the Xfer */
+  ep->xfer_buff = pBuf;  
+  ep->xfer_len = len;
+  ep->xfer_count = 0;
+  ep->is_in = 0;
+  ep->num = ep_addr & 0x7F;
+  
+  __HAL_LOCK(hpcd);
+  
+  if ((ep_addr & 0x7F) == 0 )
+  {
+    USB_EP0StartXfer(hpcd->Instance , ep);
+  }
+  else
+  {
+    USB_EPStartXfer(hpcd->Instance , ep);
+  }
+  __HAL_UNLOCK(hpcd);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Get Received Data Size
+  * @param  hpcd: PCD handle
+  * @param  ep_addr: endpoint address
+  * @retval Data Size
+  */
+uint16_t HAL_PCD_EP_GetRxCount(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
+{
+  return hpcd->OUT_ep[ep_addr & 0x7F].xfer_count;
+}
+/**
+  * @brief  Send an amount of data
+  * @param  hpcd: PCD handle
+  * @param  ep_addr: endpoint address
+  * @param  pBuf: pointer to the transmission buffer
+  * @param  len: amount of data to be sent
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_EP_Transmit(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len)
+{
+  PCD_EPTypeDef *ep = NULL;
+  
+  ep = &hpcd->IN_ep[ep_addr & 0x7F];
+  
+  /*setup and start the Xfer */
+  ep->xfer_buff = pBuf;  
+  ep->xfer_len = len;
+  ep->xfer_count = 0;
+  ep->is_in = 1;
+  ep->num = ep_addr & 0x7F;
+  
+  __HAL_LOCK(hpcd);
+  
+  if ((ep_addr & 0x7F) == 0 )
+  {
+    USB_EP0StartXfer(hpcd->Instance , ep);
+  }
+  else
+  {
+    USB_EPStartXfer(hpcd->Instance , ep);
+  }
+  
+  __HAL_UNLOCK(hpcd);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Set a STALL condition over an endpoint
+  * @param  hpcd: PCD handle
+  * @param  ep_addr: endpoint address
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_EP_SetStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
+{
+  PCD_EPTypeDef *ep = NULL;
+  
+  if ((0x80 & ep_addr) == 0x80)
+  {
+    ep = &hpcd->IN_ep[ep_addr & 0x7F];
+  }
+  else
+  {
+    ep = &hpcd->OUT_ep[ep_addr];
+  }
+  
+  ep->is_stall = 1;
+  ep->num   = ep_addr & 0x7F;
+  ep->is_in = ((ep_addr & 0x80) == 0x80);
+  
+  __HAL_LOCK(hpcd);
+  USB_EPSetStall(hpcd->Instance , ep);
+  if((ep_addr & 0x7F) == 0)
+  {
+    USB_EP0_OutStart(hpcd->Instance, (uint8_t *)hpcd->Setup);
+  }
+  __HAL_UNLOCK(hpcd); 
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Clear a STALL condition over in an endpoint
+  * @param  hpcd: PCD handle
+  * @param  ep_addr: endpoint address
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_EP_ClrStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
+{
+  PCD_EPTypeDef *ep = NULL;
+  
+  if ((0x80 & ep_addr) == 0x80)
+  {
+    ep = &hpcd->IN_ep[ep_addr & 0x7F];
+  }
+  else
+  {
+    ep = &hpcd->OUT_ep[ep_addr];
+  }
+  
+  ep->is_stall = 0;
+  ep->num   = ep_addr & 0x7F;
+  ep->is_in = ((ep_addr & 0x80) == 0x80);
+  
+  __HAL_LOCK(hpcd); 
+  USB_EPClearStall(hpcd->Instance , ep);
+  __HAL_UNLOCK(hpcd); 
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Flush an endpoint
+  * @param  hpcd: PCD handle
+  * @param  ep_addr: endpoint address
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_EP_Flush(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
+{
+  __HAL_LOCK(hpcd);
+  
+  if ((ep_addr & 0x80) == 0x80)
+  {
+    USB_FlushTxFifo(hpcd->Instance, ep_addr & 0x7F);
+  }
+  else
+  {
+    USB_FlushRxFifo(hpcd->Instance);
+  }
+  
+  __HAL_UNLOCK(hpcd); 
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  HAL_PCD_ActivateRemoteWakeup : active remote wakeup signalling
+  * @param  hpcd: PCD handle
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_ActivateRemoteWakeup(PCD_HandleTypeDef *hpcd)
+{
+  return(USB_ActivateRemoteWakeup(hpcd->Instance));
+}
+
+/**
+  * @brief  HAL_PCD_DeActivateRemoteWakeup : de-active remote wakeup signalling
+  * @param  hpcd: PCD handle
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCD_DeActivateRemoteWakeup(PCD_HandleTypeDef *hpcd)
+{
+  return(USB_DeActivateRemoteWakeup(hpcd->Instance));
+}
+/**
+  * @}
+  */
+  
+/** @defgroup PCD_Exported_Functions_Group4 Peripheral State functions 
+ *  @brief   Peripheral State functions
+ *
+@verbatim
+ ===============================================================================
+                      ##### Peripheral State functions #####
+ ===============================================================================
+    [..]
+    This subsection permits to get in run-time the status of the peripheral 
+    and the data flow.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Return the PCD state
+  * @param  hpcd: PCD handle
+  * @retval HAL state
+  */
+PCD_StateTypeDef HAL_PCD_GetState(PCD_HandleTypeDef *hpcd)
+{
+  return hpcd->State;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/** @addtogroup PCD_Private_Functions
+  * @{
+  */
+#if defined (USB_OTG_FS)
+/**
+  * @brief  DCD_WriteEmptyTxFifo
+  *         check FIFO for the next packet to be loaded
+  * @param  hpcd: PCD handle
+  * @param  epnum : endpoint number
+  *          This parameter can be a value from 0 to 15  
+  * @retval HAL status
+  */
+static HAL_StatusTypeDef PCD_WriteEmptyTxFifo(PCD_HandleTypeDef *hpcd, uint32_t epnum)
+{
+  USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;  
+  USB_OTG_EPTypeDef *ep = NULL;
+  int32_t len = 0;
+  uint32_t len32b = 0;
+  uint32_t fifoemptymsk = 0;
+  
+  ep = &hpcd->IN_ep[epnum];
+  len = ep->xfer_len - ep->xfer_count;
+  
+  if (len > ep->maxpacket)
+  {
+    len = ep->maxpacket;
+  }
+  
+  len32b = (len + 3) / 4;
+  
+  while ((USBx_INEP(epnum)->DTXFSTS & USB_OTG_DTXFSTS_INEPTFSAV) > len32b &&
+         ep->xfer_count < ep->xfer_len &&
+         ep->xfer_len != 0)
+  {
+    /* Write the FIFO */
+    len = ep->xfer_len - ep->xfer_count;
+    
+    if (len > ep->maxpacket)
+    {
+      len = ep->maxpacket;
+    }
+    len32b = (len + 3) / 4;
+    
+    USB_WritePacket(USBx, ep->xfer_buff, epnum, len);
+    
+    ep->xfer_buff  += len;
+    ep->xfer_count += len;
+  }
+  
+  if(len <= 0)
+  {
+    fifoemptymsk = 0x1 << epnum;
+    USBx_DEVICE->DIEPEMPMSK &= ~fifoemptymsk;
+    
+  }
+  
+  return HAL_OK;
+}
+#endif /* USB_OTG_FS */
+
+#if defined (USB)
+/**
+  * @brief  This function handles PCD Endpoint interrupt request.
+  * @param  hpcd: PCD handle
+  * @retval HAL status
+  */
+static HAL_StatusTypeDef PCD_EP_ISR_Handler(PCD_HandleTypeDef *hpcd)
+{
+  PCD_EPTypeDef *ep = NULL;
+  uint16_t count = 0;
+  uint8_t epindex = 0;
+  __IO uint16_t wIstr = 0;  
+  __IO uint16_t wEPVal = 0;
+  
+  /* stay in loop while pending interrupts */
+  while (((wIstr = hpcd->Instance->ISTR) & USB_ISTR_CTR) != 0)
+  {
+    /* extract highest priority endpoint number */
+    epindex = (uint8_t)(wIstr & USB_ISTR_EP_ID);
+    
+    if (epindex == 0)
+    {
+      /* Decode and service control endpoint interrupt */
+      
+      /* DIR bit = origin of the interrupt */   
+      if ((wIstr & USB_ISTR_DIR) == 0)
+      {
+        /* DIR = 0 */
+        
+        /* DIR = 0      => IN  int */
+        /* DIR = 0 implies that (EP_CTR_TX = 1) always  */
+        PCD_CLEAR_TX_EP_CTR(hpcd->Instance, PCD_ENDP0);
+        ep = &hpcd->IN_ep[0];
+        
+        ep->xfer_count = PCD_GET_EP_TX_CNT(hpcd->Instance, ep->num);
+        ep->xfer_buff += ep->xfer_count;
+ 
+        /* TX COMPLETE */
+        HAL_PCD_DataInStageCallback(hpcd, 0);
+        
+        
+        if((hpcd->USB_Address > 0)&& ( ep->xfer_len == 0))
+        {
+          hpcd->Instance->DADDR = (hpcd->USB_Address | USB_DADDR_EF);
+          hpcd->USB_Address = 0;
+        }
+        
+      }
+      else
+      {
+        /* DIR = 1 */
+        
+        /* DIR = 1 & CTR_RX       => SETUP or OUT int */
+        /* DIR = 1 & (CTR_TX | CTR_RX) => 2 int pending */
+        ep = &hpcd->OUT_ep[0];
+        wEPVal = PCD_GET_ENDPOINT(hpcd->Instance, PCD_ENDP0);
+        
+        if ((wEPVal & USB_EP_SETUP) != 0)
+        {
+          /* Get SETUP Packet*/
+          ep->xfer_count = PCD_GET_EP_RX_CNT(hpcd->Instance, ep->num);
+          USB_ReadPMA(hpcd->Instance, (uint8_t*)hpcd->Setup ,ep->pmaadress , ep->xfer_count);       
+          /* SETUP bit kept frozen while CTR_RX = 1*/ 
+          PCD_CLEAR_RX_EP_CTR(hpcd->Instance, PCD_ENDP0); 
+          
+          /* Process SETUP Packet*/
+          HAL_PCD_SetupStageCallback(hpcd);
+        }
+        
+        else if ((wEPVal & USB_EP_CTR_RX) != 0)
+        {
+          PCD_CLEAR_RX_EP_CTR(hpcd->Instance, PCD_ENDP0);
+          /* Get Control Data OUT Packet*/
+          ep->xfer_count = PCD_GET_EP_RX_CNT(hpcd->Instance, ep->num);
+          
+          if (ep->xfer_count != 0)
+          {
+            USB_ReadPMA(hpcd->Instance, ep->xfer_buff, ep->pmaadress, ep->xfer_count);
+            ep->xfer_buff+=ep->xfer_count;
+          }
+          
+          /* Process Control Data OUT Packet*/
+           HAL_PCD_DataOutStageCallback(hpcd, 0);
+          
+          PCD_SET_EP_RX_CNT(hpcd->Instance, PCD_ENDP0, ep->maxpacket);
+          PCD_SET_EP_RX_STATUS(hpcd->Instance, PCD_ENDP0, USB_EP_RX_VALID);
+        }
+      }
+    }
+    else
+    {
+      /* Decode and service non control endpoints interrupt  */
+	  
+      /* process related endpoint register */
+      wEPVal = PCD_GET_ENDPOINT(hpcd->Instance, epindex);
+      if ((wEPVal & USB_EP_CTR_RX) != 0)
+      {  
+        /* clear int flag */
+        PCD_CLEAR_RX_EP_CTR(hpcd->Instance, epindex);
+        ep = &hpcd->OUT_ep[epindex];
+        
+        /* OUT double Buffering*/
+        if (ep->doublebuffer == 0)
+        {
+          count = PCD_GET_EP_RX_CNT(hpcd->Instance, ep->num);
+          if (count != 0)
+          {
+            USB_ReadPMA(hpcd->Instance, ep->xfer_buff, ep->pmaadress, count);
+          }
+        }
+        else
+        {
+          if (PCD_GET_ENDPOINT(hpcd->Instance, ep->num) & USB_EP_DTOG_RX)
+          {
+            /*read from endpoint BUF0Addr buffer*/
+            count = PCD_GET_EP_DBUF0_CNT(hpcd->Instance, ep->num);
+            if (count != 0)
+            {
+              USB_ReadPMA(hpcd->Instance, ep->xfer_buff, ep->pmaaddr0, count);
+            }
+          }
+          else
+          {
+            /*read from endpoint BUF1Addr buffer*/
+            count = PCD_GET_EP_DBUF1_CNT(hpcd->Instance, ep->num);
+            if (count != 0)
+            {
+              USB_ReadPMA(hpcd->Instance, ep->xfer_buff, ep->pmaaddr1, count);
+            }
+          }
+          PCD_FreeUserBuffer(hpcd->Instance, ep->num, PCD_EP_DBUF_OUT);  
+        }
+        /*multi-packet on the NON control OUT endpoint*/
+        ep->xfer_count+=count;
+        ep->xfer_buff+=count;
+       
+        if ((ep->xfer_len == 0) || (count < ep->maxpacket))
+        {
+          /* RX COMPLETE */
+          HAL_PCD_DataOutStageCallback(hpcd, ep->num);
+        }
+        else
+        {
+          HAL_PCD_EP_Receive(hpcd, ep->num, ep->xfer_buff, ep->xfer_len);
+        }
+        
+      } /* if((wEPVal & EP_CTR_RX) */
+      
+      if ((wEPVal & USB_EP_CTR_TX) != 0)
+      {
+        ep = &hpcd->IN_ep[epindex];
+        
+        /* clear int flag */
+        PCD_CLEAR_TX_EP_CTR(hpcd->Instance, epindex);
+        
+        /* IN double Buffering*/
+        if (ep->doublebuffer == 0)
+        {
+          ep->xfer_count = PCD_GET_EP_TX_CNT(hpcd->Instance, ep->num);
+          if (ep->xfer_count != 0)
+          {
+            USB_WritePMA(hpcd->Instance, ep->xfer_buff, ep->pmaadress, ep->xfer_count);
+          }
+        }
+        else
+        {
+          if (PCD_GET_ENDPOINT(hpcd->Instance, ep->num) & USB_EP_DTOG_TX)
+          {
+            /*read from endpoint BUF0Addr buffer*/
+            ep->xfer_count = PCD_GET_EP_DBUF0_CNT(hpcd->Instance, ep->num);
+            if (ep->xfer_count != 0)
+            {
+              USB_WritePMA(hpcd->Instance, ep->xfer_buff, ep->pmaaddr0, ep->xfer_count);
+            }
+          }
+          else
+          {
+            /*read from endpoint BUF1Addr buffer*/
+            ep->xfer_count = PCD_GET_EP_DBUF1_CNT(hpcd->Instance, ep->num);
+            if (ep->xfer_count != 0)
+            {
+              USB_WritePMA(hpcd->Instance, ep->xfer_buff, ep->pmaaddr1, ep->xfer_count);
+            }
+          }
+          PCD_FreeUserBuffer(hpcd->Instance, ep->num, PCD_EP_DBUF_IN);  
+        }
+        /*multi-packet on the NON control IN endpoint*/
+        ep->xfer_count = PCD_GET_EP_TX_CNT(hpcd->Instance, ep->num);
+        ep->xfer_buff+=ep->xfer_count;
+       
+        /* Zero Length Packet? */
+        if (ep->xfer_len == 0)
+        {
+          /* TX COMPLETE */
+          HAL_PCD_DataInStageCallback(hpcd, ep->num);
+        }
+        else
+        {
+          HAL_PCD_EP_Transmit(hpcd, ep->num, ep->xfer_buff, ep->xfer_len);
+        }
+      } 
+    }
+  }
+  return HAL_OK;
+}
+#endif /* USB */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+  
+#endif /* STM32F102x6 || STM32F102xB || */
+       /* STM32F103x6 || STM32F103xB || */
+       /* STM32F103xE || STM32F103xG || */
+       /* STM32F105xC || STM32F107xC    */
+
+#endif /* HAL_PCD_MODULE_ENABLED */
+
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd_ex.c b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd_ex.c
new file mode 100644
index 0000000..b34328a
--- /dev/null
+++ b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd_ex.c
@@ -0,0 +1,252 @@
+/**
+  ******************************************************************************
+  * @file    stm32f1xx_hal_pcd_ex.c
+  * @author  MCD Application Team
+  * @version V1.0.4
+  * @date    29-April-2016
+  * @brief   Extended PCD HAL module driver.
+  *          This file provides firmware functions to manage the following 
+  *          functionalities of the USB Peripheral Controller:
+  *           + Extended features functions: Update FIFO configuration, 
+  *           PMA configuration for EPs  
+  *
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx_hal.h"
+
+/** @addtogroup STM32F1xx_HAL_Driver
+  * @{
+  */
+
+#ifdef HAL_PCD_MODULE_ENABLED
+
+#if defined(STM32F102x6) || defined(STM32F102xB) || \
+    defined(STM32F103x6) || defined(STM32F103xB) || \
+    defined(STM32F103xE) || defined(STM32F103xG) || \
+    defined(STM32F105xC) || defined(STM32F107xC)
+
+
+/** @defgroup PCDEx PCDEx
+  * @brief PCD Extended HAL module driver
+  * @{
+  */
+
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup PCDEx_Exported_Functions PCDEx Exported Functions
+  * @{
+  */
+
+/** @defgroup PCDEx_Exported_Functions_Group1 Peripheral Control functions
+  * @brief    PCDEx control functions 
+  *
+@verbatim
+ ===============================================================================
+              ##### Extended Peripheral Control functions #####
+ ===============================================================================
+    [..]  This section provides functions allowing to:
+      (+) Update FIFO (USB_OTG_FS)
+      (+) Update PMA configuration (USB)
+
+@endverbatim
+  * @{
+  */
+
+#if defined (USB_OTG_FS)
+/**
+  * @brief  Set Tx FIFO
+  * @param  hpcd: PCD handle
+  * @param  fifo: The number of Tx fifo
+  * @param  size: Fifo size
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCDEx_SetTxFiFo(PCD_HandleTypeDef *hpcd, uint8_t fifo, uint16_t size)
+{
+  uint8_t index = 0;
+  uint32_t Tx_Offset = 0;
+  
+  /*  TXn min size = 16 words. (n  : Transmit FIFO index)
+      When a TxFIFO is not used, the Configuration should be as follows: 
+          case 1 :  n > m    and Txn is not used    (n,m  : Transmit FIFO indexes)
+         --> Txm can use the space allocated for Txn.
+         case2  :  n < m    and Txn is not used    (n,m  : Transmit FIFO indexes)
+         --> Txn should be configured with the minimum space of 16 words
+     The FIFO is used optimally when used TxFIFOs are allocated in the top 
+         of the FIFO.Ex: use EP1 and EP2 as IN instead of EP1 and EP3 as IN ones.
+     When DMA is used 3n * FIFO locations should be reserved for internal DMA registers */
+  
+  Tx_Offset = hpcd->Instance->GRXFSIZ;
+  
+  if(fifo == 0)
+  {
+    hpcd->Instance->DIEPTXF0_HNPTXFSIZ = (size << 16) | Tx_Offset;
+  }
+  else
+  {
+    Tx_Offset += (hpcd->Instance->DIEPTXF0_HNPTXFSIZ) >> 16;
+    for (index = 0; index < (fifo - 1); index++)
+    {
+      Tx_Offset += (hpcd->Instance->DIEPTXF[index] >> 16);
+    }
+    
+    /* Multiply Tx_Size by 2 to get higher performance */
+    hpcd->Instance->DIEPTXF[fifo - 1] = (size << 16) | Tx_Offset;
+    
+  }
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Set Rx FIFO
+  * @param  hpcd: PCD handle
+  * @param  size: Size of Rx fifo
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_PCDEx_SetRxFiFo(PCD_HandleTypeDef *hpcd, uint16_t size)
+{
+  hpcd->Instance->GRXFSIZ = size;
+  return HAL_OK;
+}
+#endif /* USB_OTG_FS */
+
+#if defined (USB)
+/**
+  * @brief  Configure PMA for EP
+  * @param  hpcd : Device instance
+  * @param  ep_addr: endpoint address
+  * @param  ep_kind: endpoint Kind
+  *                  USB_SNG_BUF: Single Buffer used
+  *                  USB_DBL_BUF: Double Buffer used
+  * @param  pmaadress: EP address in The PMA: In case of single buffer endpoint
+  *                   this parameter is 16-bit value providing the address
+  *                   in PMA allocated to endpoint.
+  *                   In case of double buffer endpoint this parameter
+  *                   is a 32-bit value providing the endpoint buffer 0 address
+  *                   in the LSB part of 32-bit value and endpoint buffer 1 address
+  *                   in the MSB part of 32-bit value.
+  * @retval HAL status
+  */
+
+HAL_StatusTypeDef  HAL_PCDEx_PMAConfig(PCD_HandleTypeDef *hpcd, 
+                                       uint16_t ep_addr,
+                                       uint16_t ep_kind,
+                                       uint32_t pmaadress)
+
+{
+  PCD_EPTypeDef *ep = NULL;
+  
+  /* initialize ep structure*/
+  if ((0x80 & ep_addr) == 0x80)
+  {
+    ep = &hpcd->IN_ep[ep_addr & 0x7F];
+  }
+  else
+  {
+    ep = &hpcd->OUT_ep[ep_addr];
+  }
+  
+  /* Here we check if the endpoint is single or double Buffer*/
+  if (ep_kind == PCD_SNG_BUF)
+  {
+    /*Single Buffer*/
+    ep->doublebuffer = 0;
+    /*Configure te PMA*/
+    ep->pmaadress = (uint16_t)pmaadress;
+  }
+  else /*USB_DBL_BUF*/
+  {
+    /*Double Buffer Endpoint*/
+    ep->doublebuffer = 1;
+    /*Configure the PMA*/
+    ep->pmaaddr0 =  pmaadress & 0xFFFF;
+    ep->pmaaddr1 =  (pmaadress & 0xFFFF0000) >> 16;
+  }
+  
+  return HAL_OK; 
+}
+#endif /* USB */
+/**
+  * @}
+  */
+
+/** @defgroup PCDEx_Exported_Functions_Group2 Peripheral State functions
+  * @brief    Manage device connection state  
+  * @{
+  */
+/**
+  * @brief  Software Device Connection,  
+  *         this function is not required by USB OTG FS peripheral, it is used 
+  *         only by USB Device FS peripheral.
+  * @param  hpcd: PCD handle
+  * @param  state: connection state (0 : disconnected / 1: connected)
+  * @retval None
+  */
+__weak void HAL_PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state)
+{
+  /* Prevent unused argument(s) compilation warning */
+  UNUSED(hpcd);
+  UNUSED(state);
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_PCDEx_SetConnectionState could be implemented in the user file
+   */ 
+}
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* STM32F102x6 || STM32F102xB || */
+       /* STM32F103x6 || STM32F103xB || */
+       /* STM32F103xE || STM32F103xG || */
+       /* STM32F105xC || STM32F107xC    */
+
+#endif /* HAL_PCD_MODULE_ENABLED */
+
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_ll_usb.c b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_ll_usb.c
new file mode 100644
index 0000000..24f343d
--- /dev/null
+++ b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_ll_usb.c
@@ -0,0 +1,2211 @@
+/**
+  ******************************************************************************
+  * @file    stm32f1xx_ll_usb.c
+  * @author  MCD Application Team
+  * @version V1.0.4
+  * @date    29-April-2016
+  * @brief   USB Low Layer HAL module driver.
+  *
+  *          This file provides firmware functions to manage the following 
+  *          functionalities of the USB Peripheral Controller:
+  *           + Initialization/de-initialization functions
+  *           + I/O operation functions
+  *           + Peripheral Control functions 
+  *           + Peripheral State functions
+  *
+  @verbatim
+  ==============================================================================
+                    ##### How to use this driver #####
+  ==============================================================================
+    [..]
+      (#) Fill parameters of Init structure in USB_OTG_CfgTypeDef structure.
+  
+      (#) Call USB_CoreInit() API to initialize the USB Core peripheral.
+
+      (#) The upper HAL HCD/PCD driver will call the right routines for its internal processes.
+
+  @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx_hal.h"
+
+/** @addtogroup STM32F1xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup USB_LL USB Low Layer
+  * @brief Low layer module for USB_FS and USB_OTG_FS drivers
+  * @{
+  */
+
+#if defined (HAL_PCD_MODULE_ENABLED) || defined (HAL_HCD_MODULE_ENABLED)
+
+#if defined(STM32F102x6) || defined(STM32F102xB) || \
+    defined(STM32F103x6) || defined(STM32F103xB) || \
+    defined(STM32F103xE) || defined(STM32F103xG) || \
+    defined(STM32F105xC) || defined(STM32F107xC)
+ 
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+#if defined (USB_OTG_FS)
+/** @defgroup USB_LL_Private_Functions USB Low Layer Private Functions
+  * @{
+  */
+static HAL_StatusTypeDef USB_CoreReset(USB_OTG_GlobalTypeDef *USBx);
+/**
+  * @}
+  */
+#endif /* USB_OTG_FS */
+
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup USB_LL_Exported_Functions USB Low Layer Exported Functions
+  * @{
+  */
+
+/** @defgroup USB_LL_Exported_Functions_Group1 Peripheral Control functions
+ *  @brief   management functions
+ *
+@verbatim
+ ===============================================================================
+                      ##### Peripheral Control functions #####
+ ===============================================================================  
+    [..]
+    This subsection provides a set of functions allowing to control the PCD data 
+    transfers.
+ 
+@endverbatim
+  * @{
+  */
+  
+/*==============================================================================
+    USB OTG FS peripheral available on STM32F105xx and STM32F107xx devices 
+==============================================================================*/
+#if defined (USB_OTG_FS)
+
+/**
+  * @brief  Initializes the USB Core
+  * @param  USBx: USB Instance
+  * @param  cfg : pointer to a USB_OTG_CfgTypeDef structure that contains
+  *         the configuration information for the specified USBx peripheral.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_CoreInit(USB_OTG_GlobalTypeDef *USBx, USB_OTG_CfgTypeDef cfg)
+{
+  /* Select FS Embedded PHY */
+  USBx->GUSBCFG |= USB_OTG_GUSBCFG_PHYSEL;
+  
+  /* Reset after a PHY select and set Host mode */
+  USB_CoreReset(USBx);
+  
+  /* Deactivate the power down*/
+  USBx->GCCFG = USB_OTG_GCCFG_PWRDWN;
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_EnableGlobalInt
+  *         Enables the controller's Global Int in the AHB Config reg
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_EnableGlobalInt(USB_OTG_GlobalTypeDef *USBx)
+{
+  USBx->GAHBCFG |= USB_OTG_GAHBCFG_GINT;
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_DisableGlobalInt
+  *         Disable the controller's Global Int in the AHB Config reg
+  * @param  USBx : Selected device
+  * @retval HAL status
+*/
+HAL_StatusTypeDef USB_DisableGlobalInt(USB_OTG_GlobalTypeDef *USBx)
+{
+  USBx->GAHBCFG &= ~USB_OTG_GAHBCFG_GINT;
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_SetCurrentMode : Set functional mode
+  * @param  USBx : Selected device
+  * @param  mode :  current core mode
+  *          This parameter can be one of the these values:
+  *            @arg USB_DEVICE_MODE: Peripheral mode mode
+  *            @arg USB_HOST_MODE: Host mode
+  *            @arg USB_DRD_MODE: Dual Role Device mode  
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_SetCurrentMode(USB_OTG_GlobalTypeDef *USBx , USB_ModeTypeDef mode)
+{
+  USBx->GUSBCFG &= ~(USB_OTG_GUSBCFG_FHMOD | USB_OTG_GUSBCFG_FDMOD); 
+  
+  if ( mode == USB_HOST_MODE)
+  {
+    USBx->GUSBCFG |= USB_OTG_GUSBCFG_FHMOD;
+  }
+  else if ( mode == USB_DEVICE_MODE)
+  {
+    USBx->GUSBCFG |= USB_OTG_GUSBCFG_FDMOD; 
+  }
+  HAL_Delay(50);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_DevInit : Initializes the USB_OTG controller registers 
+  *         for device mode
+  * @param  USBx : Selected device
+  * @param  cfg  : pointer to a USB_OTG_CfgTypeDef structure that contains
+  *         the configuration information for the specified USBx peripheral.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_DevInit (USB_OTG_GlobalTypeDef *USBx, USB_OTG_CfgTypeDef cfg)
+{
+  uint32_t index = 0;
+  
+  for (index = 0; index < 15 ; index++)
+  {
+    USBx->DIEPTXF[index] = 0;
+  }
+  
+  /*Activate VBUS Sensing B */
+  USBx->GCCFG |= USB_OTG_GCCFG_VBUSBSEN;
+
+  /* Restart the Phy Clock */
+  USBx_PCGCCTL = 0;
+  
+  /* Device mode configuration */
+  USBx_DEVICE->DCFG |= DCFG_FRAME_INTERVAL_80;
+  
+  /* Set Full speed phy */
+  USB_SetDevSpeed (USBx , USB_OTG_SPEED_FULL);
+  
+  /* Flush the FIFOs */
+  USB_FlushTxFifo(USBx , 0x10); /* all Tx FIFOs */
+  USB_FlushRxFifo(USBx);
+  
+  /* Clear all pending Device Interrupts */
+  USBx_DEVICE->DIEPMSK = 0;
+  USBx_DEVICE->DOEPMSK = 0;
+  USBx_DEVICE->DAINT = 0xFFFFFFFF;
+  USBx_DEVICE->DAINTMSK = 0;
+  
+  for (index = 0; index < cfg.dev_endpoints; index++)
+  {
+    if ((USBx_INEP(index)->DIEPCTL & USB_OTG_DIEPCTL_EPENA) == USB_OTG_DIEPCTL_EPENA)
+    {
+      USBx_INEP(index)->DIEPCTL = (USB_OTG_DIEPCTL_EPDIS | USB_OTG_DIEPCTL_SNAK);
+    }
+    else
+    {
+      USBx_INEP(index)->DIEPCTL = 0;
+    }
+    
+    USBx_INEP(index)->DIEPTSIZ = 0;
+    USBx_INEP(index)->DIEPINT  = 0xFF;
+  }
+  
+  for (index = 0; index < cfg.dev_endpoints; index++)
+  {
+    if ((USBx_OUTEP(index)->DOEPCTL & USB_OTG_DOEPCTL_EPENA) == USB_OTG_DOEPCTL_EPENA)
+    {
+      USBx_OUTEP(index)->DOEPCTL = (USB_OTG_DOEPCTL_EPDIS | USB_OTG_DOEPCTL_SNAK);
+    }
+    else
+    {
+      USBx_OUTEP(index)->DOEPCTL = 0;
+    }
+    
+    USBx_OUTEP(index)->DOEPTSIZ = 0;
+    USBx_OUTEP(index)->DOEPINT  = 0xFF;
+  }
+  
+  USBx_DEVICE->DIEPMSK &= ~(USB_OTG_DIEPMSK_TXFURM);
+  
+  /* Disable all interrupts. */
+  USBx->GINTMSK = 0;
+  
+  /* Clear any pending interrupts */
+  USBx->GINTSTS = 0xBFFFFFFF;
+  
+  /* Enable the common interrupts */
+  USBx->GINTMSK |= USB_OTG_GINTMSK_RXFLVLM;
+  
+  /* Enable interrupts matching to the Device mode ONLY */
+  USBx->GINTMSK |= (USB_OTG_GINTMSK_USBSUSPM | USB_OTG_GINTMSK_USBRST |\
+                    USB_OTG_GINTMSK_ENUMDNEM | USB_OTG_GINTMSK_IEPINT |\
+                    USB_OTG_GINTMSK_OEPINT   | USB_OTG_GINTMSK_IISOIXFRM|\
+                    USB_OTG_GINTMSK_PXFRM_IISOOXFRM | USB_OTG_GINTMSK_WUIM);
+  
+  if(cfg.Sof_enable)
+  {
+    USBx->GINTMSK |= USB_OTG_GINTMSK_SOFM;
+  }
+  
+  if (cfg.vbus_sensing_enable == ENABLE)
+  {
+    USBx->GINTMSK |= (USB_OTG_GINTMSK_SRQIM | USB_OTG_GINTMSK_OTGINT); 
+  }
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_OTG_FlushTxFifo : Flush a Tx FIFO
+  * @param  USBx : Selected device
+  * @param  num : FIFO number
+  *         This parameter can be a value from 1 to 15
+            15 means Flush all Tx FIFOs
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_FlushTxFifo (USB_OTG_GlobalTypeDef *USBx, uint32_t num )
+{
+  uint32_t count = 0;
+  
+  USBx->GRSTCTL = ( USB_OTG_GRSTCTL_TXFFLSH |(uint32_t)( num << 6)); 
+  
+  do
+  {
+    if (++count > 200000)
+    {
+      return HAL_TIMEOUT;
+    }
+  }
+  while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_TXFFLSH) == USB_OTG_GRSTCTL_TXFFLSH);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_FlushRxFifo : Flush Rx FIFO
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_FlushRxFifo(USB_OTG_GlobalTypeDef *USBx)
+{
+  uint32_t count = 0;
+  
+  USBx->GRSTCTL = USB_OTG_GRSTCTL_RXFFLSH;
+  
+  do
+  {
+    if (++count > 200000)
+    {
+      return HAL_TIMEOUT;
+    }
+  }
+  while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_RXFFLSH) == USB_OTG_GRSTCTL_RXFFLSH);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_SetDevSpeed :Initializes the DevSpd field of DCFG register 
+  *         depending the PHY type and the enumeration speed of the device.
+  * @param  USBx : Selected device
+  * @param  speed : device speed
+  *          This parameter can be one of the these values:
+  *            @arg USB_OTG_SPEED_FULL: Full speed mode
+  *            @arg USB_OTG_SPEED_LOW: Low speed mode
+  * @retval  Hal status
+  */
+HAL_StatusTypeDef USB_SetDevSpeed(USB_OTG_GlobalTypeDef *USBx , uint8_t speed)
+{
+  USBx_DEVICE->DCFG |= speed;
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_GetDevSpeed :Return the  Dev Speed 
+  * @param  USBx : Selected device
+  * @retval speed : device speed
+  *          This parameter can be one of the these values:
+  *            @arg USB_OTG_SPEED_FULL: Full speed mode
+  *            @arg USB_OTG_SPEED_LOW: Low speed mode
+  */
+uint8_t USB_GetDevSpeed(USB_OTG_GlobalTypeDef *USBx)
+{
+  uint8_t speed = 0;
+  
+  if (((USBx_DEVICE->DSTS & USB_OTG_DSTS_ENUMSPD) == DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ)||
+      ((USBx_DEVICE->DSTS & USB_OTG_DSTS_ENUMSPD) == DSTS_ENUMSPD_FS_PHY_48MHZ))
+  {
+    speed = USB_OTG_SPEED_FULL;
+  }
+  else if((USBx_DEVICE->DSTS & USB_OTG_DSTS_ENUMSPD) == DSTS_ENUMSPD_LS_PHY_6MHZ)
+  {
+    speed = USB_OTG_SPEED_LOW;
+  }
+  
+  return speed;
+}
+
+/**
+  * @brief  Activate and configure an endpoint
+  * @param  USBx : Selected device
+  * @param  ep: pointer to endpoint structure
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_ActivateEndpoint(USB_OTG_GlobalTypeDef *USBx, USB_OTG_EPTypeDef *ep)
+{
+  if (ep->is_in)
+  {
+    /* Assign a Tx FIFO */
+    ep->tx_fifo_num = ep->num;
+  }
+  /* Set initial data PID. */
+  if (ep->type == EP_TYPE_BULK )
+  {
+    ep->data_pid_start = 0;
+  }
+  
+  if (ep->is_in == 1)
+  {
+   USBx_DEVICE->DAINTMSK |= USB_OTG_DAINTMSK_IEPM & ((1 << (ep->num)));
+   
+    if (((USBx_INEP(ep->num)->DIEPCTL) & USB_OTG_DIEPCTL_USBAEP) == 0)
+    {
+      USBx_INEP(ep->num)->DIEPCTL |= ((ep->maxpacket & USB_OTG_DIEPCTL_MPSIZ ) | (ep->type << 18 ) |\
+        ((ep->num) << 22 ) | (USB_OTG_DIEPCTL_SD0PID_SEVNFRM) | (USB_OTG_DIEPCTL_USBAEP)); 
+    }
+  }
+  else
+  {
+     USBx_DEVICE->DAINTMSK |= USB_OTG_DAINTMSK_OEPM & ((1 << (ep->num)) << 16);
+     
+    if (((USBx_OUTEP(ep->num)->DOEPCTL) & USB_OTG_DOEPCTL_USBAEP) == 0)
+    {
+      USBx_OUTEP(ep->num)->DOEPCTL |= ((ep->maxpacket & USB_OTG_DOEPCTL_MPSIZ ) | (ep->type << 18 ) |\
+       (USB_OTG_DIEPCTL_SD0PID_SEVNFRM)| (USB_OTG_DOEPCTL_USBAEP));
+    }
+  }
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  De-activate and de-initialize an endpoint
+  * @param  USBx : Selected device
+  * @param  ep: pointer to endpoint structure
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_DeactivateEndpoint(USB_OTG_GlobalTypeDef *USBx, USB_OTG_EPTypeDef *ep)
+{
+  /* Read DEPCTLn register */
+  if (ep->is_in == 1)
+  {
+    USBx_DEVICE->DEACHMSK &= ~(USB_OTG_DAINTMSK_IEPM & ((1 << (ep->num))));
+    USBx_DEVICE->DAINTMSK &= ~(USB_OTG_DAINTMSK_IEPM & ((1 << (ep->num))));
+    USBx_INEP(ep->num)->DIEPCTL &= ~ USB_OTG_DIEPCTL_USBAEP;
+  }
+  else
+  {
+    USBx_DEVICE->DEACHMSK &= ~(USB_OTG_DAINTMSK_OEPM & ((1 << (ep->num)) << 16));
+    USBx_DEVICE->DAINTMSK &= ~(USB_OTG_DAINTMSK_OEPM & ((1 << (ep->num)) << 16));
+    USBx_OUTEP(ep->num)->DOEPCTL &= ~USB_OTG_DOEPCTL_USBAEP;
+  }
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_EPStartXfer : setup and starts a transfer over an EP
+  * @param  USBx : Selected device
+  * @param  ep: pointer to endpoint structure
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_EPStartXfer(USB_OTG_GlobalTypeDef *USBx , USB_OTG_EPTypeDef *ep)
+{
+  uint16_t pktcnt = 0;
+  
+  /* IN endpoint */
+  if (ep->is_in == 1)
+  {
+    /* Zero Length Packet? */
+    if (ep->xfer_len == 0)
+    {
+      USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_PKTCNT); 
+      USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_PKTCNT & (1 << 19)) ;
+      USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_XFRSIZ); 
+    }
+    else
+    {
+      /* Program the transfer size and packet count
+      * as follows: xfersize = N * maxpacket +
+      * short_packet pktcnt = N + (short_packet
+      * exist ? 1 : 0)
+      */
+      USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_XFRSIZ);
+      USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_PKTCNT); 
+      USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_PKTCNT & (((ep->xfer_len + ep->maxpacket -1)/ ep->maxpacket) << 19)) ;
+      USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_XFRSIZ & ep->xfer_len); 
+      
+      if (ep->type == EP_TYPE_ISOC)
+      {
+        USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_MULCNT); 
+        USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_MULCNT & (1 << 29)); 
+      }
+    }
+    
+    if (ep->type != EP_TYPE_ISOC)
+    {
+      /* Enable the Tx FIFO Empty Interrupt for this EP */
+      if (ep->xfer_len > 0)
+      {
+        USBx_DEVICE->DIEPEMPMSK |= 1 << ep->num;
+      }
+    }
+    
+    if (ep->type == EP_TYPE_ISOC)
+    {
+      if ((USBx_DEVICE->DSTS & ( 1 << 8 )) == 0)
+      {
+        USBx_INEP(ep->num)->DIEPCTL |= USB_OTG_DIEPCTL_SODDFRM;
+      }
+      else
+      {
+        USBx_INEP(ep->num)->DIEPCTL |= USB_OTG_DIEPCTL_SD0PID_SEVNFRM;
+      }
+    } 
+    
+    /* EP enable, IN data in FIFO */
+    USBx_INEP(ep->num)->DIEPCTL |= (USB_OTG_DIEPCTL_CNAK | USB_OTG_DIEPCTL_EPENA);
+    
+    if (ep->type == EP_TYPE_ISOC)
+    {
+      USB_WritePacket(USBx, ep->xfer_buff, ep->num, ep->xfer_len);
+    }
+  }
+  else /* OUT endpoint */
+  {
+    /* Program the transfer size and packet count as follows:
+    * pktcnt = N
+    * xfersize = N * maxpacket
+    */
+    USBx_OUTEP(ep->num)->DOEPTSIZ &= ~(USB_OTG_DOEPTSIZ_XFRSIZ); 
+    USBx_OUTEP(ep->num)->DOEPTSIZ &= ~(USB_OTG_DOEPTSIZ_PKTCNT); 
+    
+    if (ep->xfer_len == 0)
+    {
+      USBx_OUTEP(ep->num)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_XFRSIZ & ep->maxpacket);
+      USBx_OUTEP(ep->num)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_PKTCNT & (1 << 19));
+    }
+    else
+    {
+      pktcnt = (ep->xfer_len + ep->maxpacket -1)/ ep->maxpacket;
+      USBx_OUTEP(ep->num)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_PKTCNT & (pktcnt << 19));
+      USBx_OUTEP(ep->num)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_XFRSIZ & (ep->maxpacket * pktcnt));
+    }
+    
+    if (ep->type == EP_TYPE_ISOC)
+    {
+      if ((USBx_DEVICE->DSTS & ( 1 << 8 )) == 0)
+      {
+        USBx_OUTEP(ep->num)->DOEPCTL |= USB_OTG_DOEPCTL_SODDFRM;
+      }
+      else
+      {
+        USBx_OUTEP(ep->num)->DOEPCTL |= USB_OTG_DOEPCTL_SD0PID_SEVNFRM;
+      }
+    }
+    /* EP enable */
+    USBx_OUTEP(ep->num)->DOEPCTL |= (USB_OTG_DOEPCTL_CNAK | USB_OTG_DOEPCTL_EPENA);
+  }
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_EP0StartXfer : setup and starts a transfer over the EP  0
+  * @param  USBx : Selected device
+  * @param  ep: pointer to endpoint structure
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_EP0StartXfer(USB_OTG_GlobalTypeDef *USBx , USB_OTG_EPTypeDef *ep)
+{
+  /* IN endpoint */
+  if (ep->is_in == 1)
+  {
+    /* Zero Length Packet? */
+    if (ep->xfer_len == 0)
+    {
+      USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_PKTCNT);
+      USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_PKTCNT & (1 << 19));
+      USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_XFRSIZ);
+    }
+    else
+    {
+      /* Program the transfer size and packet count
+      * as follows: xfersize = N * maxpacket +
+      * short_packet pktcnt = N + (short_packet
+      * exist ? 1 : 0)
+      */
+      USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_XFRSIZ);
+      USBx_INEP(ep->num)->DIEPTSIZ &= ~(USB_OTG_DIEPTSIZ_PKTCNT);
+      
+      if(ep->xfer_len > ep->maxpacket)
+      {
+        ep->xfer_len = ep->maxpacket;
+      }
+      USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_PKTCNT & (1 << 19));
+      USBx_INEP(ep->num)->DIEPTSIZ |= (USB_OTG_DIEPTSIZ_XFRSIZ & ep->xfer_len);
+    }
+    
+    /* Enable the Tx FIFO Empty Interrupt for this EP */
+    if (ep->xfer_len > 0)
+    {
+      USBx_DEVICE->DIEPEMPMSK |= 1 << (ep->num);
+    }
+    
+    /* EP enable, IN data in FIFO */
+    USBx_INEP(ep->num)->DIEPCTL |= (USB_OTG_DIEPCTL_CNAK | USB_OTG_DIEPCTL_EPENA);   
+  }
+  else /* OUT endpoint */
+  {
+    /* Program the transfer size and packet count as follows:
+    * pktcnt = N
+    * xfersize = N * maxpacket
+    */
+    USBx_OUTEP(ep->num)->DOEPTSIZ &= ~(USB_OTG_DOEPTSIZ_XFRSIZ);
+    USBx_OUTEP(ep->num)->DOEPTSIZ &= ~(USB_OTG_DOEPTSIZ_PKTCNT);
+    
+    if (ep->xfer_len > 0)
+    {
+      ep->xfer_len = ep->maxpacket;
+    }
+    
+    USBx_OUTEP(ep->num)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_PKTCNT & (1 << 19));
+    USBx_OUTEP(ep->num)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_XFRSIZ & (ep->maxpacket));
+    
+    /* EP enable */
+    USBx_OUTEP(ep->num)->DOEPCTL |= (USB_OTG_DOEPCTL_CNAK | USB_OTG_DOEPCTL_EPENA);
+  }
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_WritePacket : Writes a packet into the Tx FIFO associated 
+  *         with the EP/channel
+  * @param  USBx : Selected device
+  * @param  src :  pointer to source buffer
+  * @param  ch_ep_num : endpoint or host channel number
+  * @param  len : Number of bytes to write
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_WritePacket(USB_OTG_GlobalTypeDef *USBx, uint8_t *src, uint8_t ch_ep_num, uint16_t len)
+{
+  uint32_t count32b = 0 , index = 0;
+  
+  count32b =  (len + 3) / 4;
+  for (index = 0; index < count32b; index++, src += 4)
+  {
+    USBx_DFIFO(ch_ep_num) = *((__packed uint32_t *)src);
+  }
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_ReadPacket : read a packet from the Tx FIFO associated 
+  *         with the EP/channel
+  * @param  USBx : Selected device
+  * @param  dest : destination pointer
+  * @param  len : Number of bytes to read
+  * @retval pointer to destination buffer
+  */
+void *USB_ReadPacket(USB_OTG_GlobalTypeDef *USBx, uint8_t *dest, uint16_t len)
+{
+  uint32_t index = 0;
+  uint32_t count32b = (len + 3) / 4;
+  
+  for ( index = 0; index < count32b; index++, dest += 4 )
+  {
+    *(__packed uint32_t *)dest = USBx_DFIFO(0);
+    
+  }
+  return ((void *)dest);
+}
+
+/**
+  * @brief  USB_EPSetStall : set a stall condition over an EP
+  * @param  USBx : Selected device
+  * @param  ep: pointer to endpoint structure   
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_EPSetStall(USB_OTG_GlobalTypeDef *USBx , USB_OTG_EPTypeDef *ep)
+{
+  if (ep->is_in == 1)
+  {
+    if (((USBx_INEP(ep->num)->DIEPCTL) & USB_OTG_DIEPCTL_EPENA) == 0)
+    {
+      USBx_INEP(ep->num)->DIEPCTL &= ~(USB_OTG_DIEPCTL_EPDIS);
+    } 
+    USBx_INEP(ep->num)->DIEPCTL |= USB_OTG_DIEPCTL_STALL;
+  }
+  else
+  {
+    if (((USBx_OUTEP(ep->num)->DOEPCTL) & USB_OTG_DOEPCTL_EPENA) == 0)
+    {
+      USBx_OUTEP(ep->num)->DOEPCTL &= ~(USB_OTG_DOEPCTL_EPDIS);
+    } 
+    USBx_OUTEP(ep->num)->DOEPCTL |= USB_OTG_DOEPCTL_STALL;
+  }
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_EPClearStall : Clear a stall condition over an EP
+  * @param  USBx : Selected device
+  * @param  ep: pointer to endpoint structure
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_EPClearStall(USB_OTG_GlobalTypeDef *USBx, USB_OTG_EPTypeDef *ep)
+{
+  if (ep->is_in == 1)
+  {
+    USBx_INEP(ep->num)->DIEPCTL &= ~USB_OTG_DIEPCTL_STALL;
+    if (ep->type == EP_TYPE_INTR || ep->type == EP_TYPE_BULK)
+    {
+       USBx_INEP(ep->num)->DIEPCTL |= USB_OTG_DIEPCTL_SD0PID_SEVNFRM; /* DATA0 */
+    }
+  }
+  else
+  {
+    USBx_OUTEP(ep->num)->DOEPCTL &= ~USB_OTG_DOEPCTL_STALL;
+    if (ep->type == EP_TYPE_INTR || ep->type == EP_TYPE_BULK)
+    {
+      USBx_OUTEP(ep->num)->DOEPCTL |= USB_OTG_DOEPCTL_SD0PID_SEVNFRM; /* DATA0 */
+    }
+  }
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_StopDevice : Stop the usb device mode
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_StopDevice(USB_OTG_GlobalTypeDef *USBx)
+{
+  uint32_t index = 0;
+  
+  /* Clear Pending interrupt */
+  for (index = 0; index < 15 ; index++)
+  {
+    USBx_INEP(index)->DIEPINT  = 0xFF;
+    USBx_OUTEP(index)->DOEPINT  = 0xFF;
+  }
+  USBx_DEVICE->DAINT = 0xFFFFFFFF;
+  
+  /* Clear interrupt masks */
+  USBx_DEVICE->DIEPMSK  = 0;
+  USBx_DEVICE->DOEPMSK  = 0;
+  USBx_DEVICE->DAINTMSK = 0;
+  
+  /* Flush the FIFO */
+  USB_FlushRxFifo(USBx);
+  USB_FlushTxFifo(USBx ,  0x10 );
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_SetDevAddress : Stop the usb device mode
+  * @param  USBx : Selected device
+  * @param  address : new device address to be assigned
+  *          This parameter can be a value from 0 to 255
+  * @retval HAL status
+  */
+HAL_StatusTypeDef  USB_SetDevAddress (USB_OTG_GlobalTypeDef *USBx, uint8_t address)
+{
+  USBx_DEVICE->DCFG &= ~ (USB_OTG_DCFG_DAD);
+  USBx_DEVICE->DCFG |= (address << 4) & USB_OTG_DCFG_DAD;
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_DevConnect : Connect the USB device by enabling the pull-up/pull-down
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef  USB_DevConnect (USB_OTG_GlobalTypeDef *USBx)
+{
+  USBx_DEVICE->DCTL &= ~USB_OTG_DCTL_SDIS ;
+  HAL_Delay(3);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_DevDisconnect : Disconnect the USB device by disabling the pull-up/pull-down
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef  USB_DevDisconnect (USB_OTG_GlobalTypeDef *USBx)
+{
+  USBx_DEVICE->DCTL |= USB_OTG_DCTL_SDIS;
+  HAL_Delay(3);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_ReadInterrupts: return the global USB interrupt status
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+uint32_t  USB_ReadInterrupts (USB_OTG_GlobalTypeDef *USBx)
+{
+  uint32_t tmpreg = 0;
+  
+  tmpreg = USBx->GINTSTS;
+  tmpreg &= USBx->GINTMSK;
+  return tmpreg;
+}
+
+/**
+  * @brief  USB_ReadDevAllOutEpInterrupt: return the USB device OUT endpoints interrupt status
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+uint32_t USB_ReadDevAllOutEpInterrupt (USB_OTG_GlobalTypeDef *USBx)
+{
+  uint32_t tmpreg = 0;
+  tmpreg  = USBx_DEVICE->DAINT;
+  tmpreg &= USBx_DEVICE->DAINTMSK;
+  return ((tmpreg & 0xffff0000) >> 16);
+}
+
+/**
+  * @brief  USB_ReadDevAllInEpInterrupt: return the USB device IN endpoints interrupt status
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+uint32_t USB_ReadDevAllInEpInterrupt (USB_OTG_GlobalTypeDef *USBx)
+{
+  uint32_t tmpreg = 0;
+  tmpreg  = USBx_DEVICE->DAINT;
+  tmpreg &= USBx_DEVICE->DAINTMSK;
+  return ((tmpreg & 0xFFFF));
+}
+
+/**
+  * @brief  Returns Device OUT EP Interrupt register
+  * @param  USBx : Selected device
+  * @param  epnum : endpoint number
+  *          This parameter can be a value from 0 to 15
+  * @retval Device OUT EP Interrupt register
+  */
+uint32_t USB_ReadDevOutEPInterrupt (USB_OTG_GlobalTypeDef *USBx , uint8_t epnum)
+{
+  uint32_t tmpreg = 0;
+  tmpreg  = USBx_OUTEP(epnum)->DOEPINT;
+  tmpreg &= USBx_DEVICE->DOEPMSK;
+  return tmpreg;
+}
+
+/**
+  * @brief  Returns Device IN EP Interrupt register
+  * @param  USBx : Selected device
+  * @param  epnum : endpoint number
+  *          This parameter can be a value from 0 to 15
+  * @retval Device IN EP Interrupt register
+  */
+uint32_t USB_ReadDevInEPInterrupt (USB_OTG_GlobalTypeDef *USBx , uint8_t epnum)
+{
+  uint32_t tmpreg = 0, msk = 0, emp = 0;
+  
+  msk = USBx_DEVICE->DIEPMSK;
+  emp = USBx_DEVICE->DIEPEMPMSK;
+  msk |= ((emp >> epnum) & 0x1) << 7;
+  tmpreg = USBx_INEP(epnum)->DIEPINT & msk;
+  return tmpreg;
+}
+
+/**
+  * @brief  USB_ClearInterrupts: clear a USB interrupt
+  * @param  USBx : Selected device
+  * @param  interrupt : interrupt flag
+  * @retval None
+  */
+void  USB_ClearInterrupts (USB_OTG_GlobalTypeDef *USBx, uint32_t interrupt)
+{
+  USBx->GINTSTS |= interrupt;
+}
+
+/**
+  * @brief  Returns USB core mode
+  * @param  USBx : Selected device
+  * @retval return core mode : Host or Device
+  *          This parameter can be one of the these values:
+  *           0 : Host 
+  *           1 : Device
+  */
+uint32_t USB_GetMode(USB_OTG_GlobalTypeDef *USBx)
+{
+  return ((USBx->GINTSTS ) & 0x1);
+}
+
+/**
+  * @brief  Activate EP0 for Setup transactions
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef  USB_ActivateSetup (USB_OTG_GlobalTypeDef *USBx)
+{
+  /* Set the MPS of the IN EP based on the enumeration speed */
+  USBx_INEP(0)->DIEPCTL &= ~USB_OTG_DIEPCTL_MPSIZ;
+  
+  if((USBx_DEVICE->DSTS & USB_OTG_DSTS_ENUMSPD) == DSTS_ENUMSPD_LS_PHY_6MHZ)
+  {
+    USBx_INEP(0)->DIEPCTL |= 3;
+  }
+  USBx_DEVICE->DCTL |= USB_OTG_DCTL_CGINAK;
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Prepare the EP0 to start the first control setup
+  * @param  USBx : Selected device
+  * @param  psetup : pointer to setup packet
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_EP0_OutStart(USB_OTG_GlobalTypeDef *USBx, uint8_t *psetup)
+{
+  USBx_OUTEP(0)->DOEPTSIZ = 0;
+  USBx_OUTEP(0)->DOEPTSIZ |= (USB_OTG_DOEPTSIZ_PKTCNT & (1 << 19));
+  USBx_OUTEP(0)->DOEPTSIZ |= (3 * 8);
+  USBx_OUTEP(0)->DOEPTSIZ |=  USB_OTG_DOEPTSIZ_STUPCNT;
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_HostInit : Initializes the USB OTG controller registers 
+  *         for Host mode 
+  * @param  USBx : Selected device
+  * @param  cfg  : pointer to a USB_OTG_CfgTypeDef structure that contains
+  *         the configuration information for the specified USBx peripheral.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_HostInit (USB_OTG_GlobalTypeDef *USBx, USB_OTG_CfgTypeDef cfg)
+{
+  uint32_t index = 0;
+  
+  /* Restart the Phy Clock */
+  USBx_PCGCCTL = 0;
+  
+  /* no VBUS sensing*/
+  USBx->GCCFG &=~ (USB_OTG_GCCFG_VBUSASEN);
+  USBx->GCCFG &=~ (USB_OTG_GCCFG_VBUSBSEN);
+  
+  /* Disable the FS/LS support mode only */
+  if((cfg.speed == USB_OTG_SPEED_FULL)&&
+     (USBx != USB_OTG_FS))
+  {
+    USBx_HOST->HCFG |= USB_OTG_HCFG_FSLSS; 
+  }
+  else
+  {
+    USBx_HOST->HCFG &= ~(USB_OTG_HCFG_FSLSS);  
+  }
+  
+  /* Make sure the FIFOs are flushed. */
+  USB_FlushTxFifo(USBx, 0x10 ); /* all Tx FIFOs */
+  USB_FlushRxFifo(USBx);
+  
+  /* Clear all pending HC Interrupts */
+  for (index = 0; index < cfg.Host_channels; index++)
+  {
+    USBx_HC(index)->HCINT = 0xFFFFFFFF;
+    USBx_HC(index)->HCINTMSK = 0;
+  }
+  
+  /* Enable VBUS driving */
+  USB_DriveVbus(USBx, 1);
+  
+  HAL_Delay(200);
+  
+  /* Disable all interrupts. */
+  USBx->GINTMSK = 0;
+  
+  /* Clear any pending interrupts */
+  USBx->GINTSTS = 0xFFFFFFFF;
+  
+  if(USBx == USB_OTG_FS)
+  {
+    /* set Rx FIFO size */
+    USBx->GRXFSIZ  = (uint32_t )0x80; 
+    USBx->DIEPTXF0_HNPTXFSIZ = (uint32_t )(((0x60 << 16)& USB_OTG_NPTXFD) | 0x80);
+    USBx->HPTXFSIZ = (uint32_t )(((0x40 << 16)& USB_OTG_HPTXFSIZ_PTXFD) | 0xE0);
+  }
+  
+  /* Enable the common interrupts */
+  USBx->GINTMSK |= USB_OTG_GINTMSK_RXFLVLM;
+  
+  /* Enable interrupts matching to the Host mode ONLY */
+  USBx->GINTMSK |= (USB_OTG_GINTMSK_PRTIM            | USB_OTG_GINTMSK_HCIM |\
+                    USB_OTG_GINTMSK_SOFM             |USB_OTG_GINTSTS_DISCINT|\
+                    USB_OTG_GINTMSK_PXFRM_IISOOXFRM  | USB_OTG_GINTMSK_WUIM);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_InitFSLSPClkSel : Initializes the FSLSPClkSel field of the 
+  *         HCFG register on the PHY type and set the right frame interval
+  * @param  USBx : Selected device
+  * @param  freq : clock frequency
+  *          This parameter can be one of the these values:
+  *           HCFG_48_MHZ : Full Speed 48 MHz Clock 
+  *           HCFG_6_MHZ : Low Speed 6 MHz Clock 
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_InitFSLSPClkSel(USB_OTG_GlobalTypeDef *USBx , uint8_t freq)
+{
+  USBx_HOST->HCFG &= ~(USB_OTG_HCFG_FSLSPCS);
+  USBx_HOST->HCFG |= (freq & USB_OTG_HCFG_FSLSPCS);
+  
+  if (freq ==  HCFG_48_MHZ)
+  {
+    USBx_HOST->HFIR = (uint32_t)48000;
+  }
+  else if (freq ==  HCFG_6_MHZ)
+  {
+    USBx_HOST->HFIR = (uint32_t)6000;
+  }
+  return HAL_OK;
+}
+
+/**
+* @brief  USB_OTG_ResetPort : Reset Host Port
+  * @param  USBx : Selected device
+  * @retval HAL status
+  * @note : (1)The application must wait at least 10 ms
+  *   before clearing the reset bit.
+  */
+HAL_StatusTypeDef USB_ResetPort(USB_OTG_GlobalTypeDef *USBx)
+{
+  __IO uint32_t hprt0 = 0;
+  
+  hprt0 = USBx_HPRT0;
+  
+  hprt0 &= ~(USB_OTG_HPRT_PENA    | USB_OTG_HPRT_PCDET |\
+    USB_OTG_HPRT_PENCHNG | USB_OTG_HPRT_POCCHNG );
+  
+  USBx_HPRT0 = (USB_OTG_HPRT_PRST | hprt0);  
+  HAL_Delay (10);                                /* See Note #1 */
+  USBx_HPRT0 = ((~USB_OTG_HPRT_PRST) & hprt0); 
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_DriveVbus : activate or de-activate vbus
+  * @param  state : VBUS state
+  *          This parameter can be one of the these values:
+  *           0 : VBUS Active 
+  *           1 : VBUS Inactive
+  * @retval HAL status
+*/
+HAL_StatusTypeDef USB_DriveVbus (USB_OTG_GlobalTypeDef *USBx, uint8_t state)
+{
+  __IO uint32_t hprt0 = 0;
+  
+  hprt0 = USBx_HPRT0;
+  hprt0 &= ~(USB_OTG_HPRT_PENA    | USB_OTG_HPRT_PCDET |\
+          USB_OTG_HPRT_PENCHNG | USB_OTG_HPRT_POCCHNG );
+  
+  if (((hprt0 & USB_OTG_HPRT_PPWR) == 0 ) && (state == 1 ))
+  {
+    USBx_HPRT0 = (USB_OTG_HPRT_PPWR | hprt0);
+  }
+  if (((hprt0 & USB_OTG_HPRT_PPWR) == USB_OTG_HPRT_PPWR) && (state == 0 ))
+  {
+    USBx_HPRT0 = ((~USB_OTG_HPRT_PPWR) & hprt0);
+  }
+  return HAL_OK;
+}
+
+/**
+  * @brief  Return Host Core speed
+  * @param  USBx : Selected device
+  * @retval speed : Host speed
+  *          This parameter can be one of the these values:
+  *            @arg USB_OTG_SPEED_FULL: Full speed mode
+  *            @arg USB_OTG_SPEED_LOW: Low speed mode
+  */
+uint32_t USB_GetHostSpeed (USB_OTG_GlobalTypeDef *USBx)
+{
+  __IO uint32_t hprt0 = 0;
+  
+  hprt0 = USBx_HPRT0;
+  return ((hprt0 & USB_OTG_HPRT_PSPD) >> 17);
+}
+
+/**
+  * @brief  Return Host Current Frame number
+  * @param  USBx : Selected device
+  * @retval current frame number
+*/
+uint32_t USB_GetCurrentFrame (USB_OTG_GlobalTypeDef *USBx)
+{
+  return (USBx_HOST->HFNUM & USB_OTG_HFNUM_FRNUM);
+}
+
+/**
+  * @brief  Initialize a host channel
+  * @param  USBx : Selected device
+  * @param  ch_num : Channel number
+  *         This parameter can be a value from 1 to 15
+  * @param  epnum : Endpoint number
+  *          This parameter can be a value from 1 to 15
+  * @param  dev_address : Current device address
+  *          This parameter can be a value from 0 to 255
+  * @param  speed : Current device speed
+  *          This parameter can be one of the these values:
+  *            @arg USB_OTG_SPEED_FULL: Full speed mode
+  *            @arg USB_OTG_SPEED_LOW: Low speed mode
+  * @param  ep_type : Endpoint Type
+  *          This parameter can be one of the these values:
+  *            @arg EP_TYPE_CTRL: Control type
+  *            @arg EP_TYPE_ISOC: Isochronous type
+  *            @arg EP_TYPE_BULK: Bulk type
+  *            @arg EP_TYPE_INTR: Interrupt type
+  * @param  mps : Max Packet Size
+  *          This parameter can be a value from 0 to32K
+  * @retval HAL state
+  */
+HAL_StatusTypeDef USB_HC_Init(USB_OTG_GlobalTypeDef *USBx,  
+                              uint8_t ch_num,
+                              uint8_t epnum,
+                              uint8_t dev_address,
+                              uint8_t speed,
+                              uint8_t ep_type,
+                              uint16_t mps)
+{
+  /* Clear old interrupt conditions for this host channel. */
+  USBx_HC(ch_num)->HCINT = 0xFFFFFFFF;
+  
+  /* Enable channel interrupts required for this transfer. */
+  switch (ep_type) 
+  {
+  case EP_TYPE_CTRL:
+  case EP_TYPE_BULK:
+    USBx_HC(ch_num)->HCINTMSK = USB_OTG_HCINTMSK_XFRCM  |\
+                                USB_OTG_HCINTMSK_STALLM |\
+                                USB_OTG_HCINTMSK_TXERRM |\
+                                USB_OTG_HCINTMSK_DTERRM |\
+                                USB_OTG_HCINTMSK_AHBERR |\
+                                USB_OTG_HCINTMSK_NAKM ;
+  
+    if (epnum & 0x80) 
+    {
+      USBx_HC(ch_num)->HCINTMSK |= USB_OTG_HCINTMSK_BBERRM;
+    }
+    break;
+  
+  case EP_TYPE_INTR:
+    USBx_HC(ch_num)->HCINTMSK = USB_OTG_HCINTMSK_XFRCM  |\
+                                USB_OTG_HCINTMSK_STALLM |\
+                                USB_OTG_HCINTMSK_TXERRM |\
+                                USB_OTG_HCINTMSK_DTERRM |\
+                                USB_OTG_HCINTMSK_NAKM   |\
+                                USB_OTG_HCINTMSK_AHBERR |\
+                                USB_OTG_HCINTMSK_FRMORM ;
+    
+    if (epnum & 0x80) 
+    {
+      USBx_HC(ch_num)->HCINTMSK |= USB_OTG_HCINTMSK_BBERRM;
+    }
+    
+    break;
+  
+  case EP_TYPE_ISOC:
+    USBx_HC(ch_num)->HCINTMSK = USB_OTG_HCINTMSK_XFRCM  |\
+                                USB_OTG_HCINTMSK_ACKM   |\
+                                USB_OTG_HCINTMSK_AHBERR |\
+                                USB_OTG_HCINTMSK_FRMORM ;
+    
+    if (epnum & 0x80) 
+    {
+      USBx_HC(ch_num)->HCINTMSK |= (USB_OTG_HCINTMSK_TXERRM | USB_OTG_HCINTMSK_BBERRM);
+    }
+    break;
+  }
+  
+  /* Enable the top level host channel interrupt. */
+  USBx_HOST->HAINTMSK |= (1 << ch_num);
+  
+  /* Make sure host channel interrupts are enabled. */
+  USBx->GINTMSK |= USB_OTG_GINTMSK_HCIM;
+  
+  /* Program the HCCHAR register */
+  USBx_HC(ch_num)->HCCHAR = (((dev_address << 22) & USB_OTG_HCCHAR_DAD)  |\
+                             (((epnum & 0x7F)<< 11) & USB_OTG_HCCHAR_EPNUM)|\
+                             ((((epnum & 0x80) == 0x80)<< 15) & USB_OTG_HCCHAR_EPDIR)|\
+                             (((speed == HPRT0_PRTSPD_LOW_SPEED)<< 17) & USB_OTG_HCCHAR_LSDEV)|\
+                             ((ep_type << 18) & USB_OTG_HCCHAR_EPTYP)|\
+                             (mps & USB_OTG_HCCHAR_MPSIZ));
+  
+  if (ep_type == EP_TYPE_INTR)
+  {
+    USBx_HC(ch_num)->HCCHAR |= USB_OTG_HCCHAR_ODDFRM ;
+  }
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Start a transfer over a host channel
+  * @param  USBx : Selected device
+  * @param  hc : pointer to host channel structure
+  * @retval HAL state
+  */
+#if defined   (__CC_ARM) /*!< ARM Compiler */
+#pragma O0
+#elif defined (__GNUC__) /*!< GNU Compiler */
+#pragma GCC optimize ("O0")
+#endif /* __CC_ARM */
+HAL_StatusTypeDef USB_HC_StartXfer(USB_OTG_GlobalTypeDef *USBx, USB_OTG_HCTypeDef *hc)
+{
+  uint8_t  is_oddframe = 0;
+  uint16_t len_words = 0;
+  uint16_t num_packets = 0;
+  uint16_t max_hc_pkt_count = 256;
+  uint32_t tmpreg = 0;
+  
+  /* Compute the expected number of packets associated to the transfer */
+  if (hc->xfer_len > 0)
+  {
+    num_packets = (hc->xfer_len + hc->max_packet - 1) / hc->max_packet;
+    
+    if (num_packets > max_hc_pkt_count)
+    {
+      num_packets = max_hc_pkt_count;
+      hc->xfer_len = num_packets * hc->max_packet;
+    }
+  }
+  else
+  {
+    num_packets = 1;
+  }
+  if (hc->ep_is_in)
+  {
+    hc->xfer_len = num_packets * hc->max_packet;
+  }
+  
+  /* Initialize the HCTSIZn register */
+  USBx_HC(hc->ch_num)->HCTSIZ = (((hc->xfer_len) & USB_OTG_HCTSIZ_XFRSIZ)) |\
+    ((num_packets << 19) & USB_OTG_HCTSIZ_PKTCNT) |\
+      (((hc->data_pid) << 29) & USB_OTG_HCTSIZ_DPID);
+  
+  is_oddframe = (USBx_HOST->HFNUM & 0x01) ? 0 : 1;
+  USBx_HC(hc->ch_num)->HCCHAR &= ~USB_OTG_HCCHAR_ODDFRM;
+  USBx_HC(hc->ch_num)->HCCHAR |= (is_oddframe << 29);
+  
+  /* Set host channel enable */
+  tmpreg = USBx_HC(hc->ch_num)->HCCHAR;
+  tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
+  tmpreg |= USB_OTG_HCCHAR_CHENA;
+  USBx_HC(hc->ch_num)->HCCHAR = tmpreg;
+  
+  if((hc->ep_is_in == 0) && (hc->xfer_len > 0))
+  {
+    switch(hc->ep_type) 
+    {
+      /* Non periodic transfer */
+    case EP_TYPE_CTRL:
+    case EP_TYPE_BULK:
+      len_words = (hc->xfer_len + 3) / 4;
+      
+      /* check if there is enough space in FIFO space */
+      if(len_words > (USBx->HNPTXSTS & 0xFFFF))
+      {
+        /* need to process data in nptxfempty interrupt */
+        USBx->GINTMSK |= USB_OTG_GINTMSK_NPTXFEM;
+      }
+      break;
+      
+      /* Periodic transfer */
+    case EP_TYPE_INTR:
+    case EP_TYPE_ISOC:
+      len_words = (hc->xfer_len + 3) / 4;
+      /* check if there is enough space in FIFO space */
+      if(len_words > (USBx_HOST->HPTXSTS & 0xFFFF)) /* split the transfer */
+      {
+        /* need to process data in ptxfempty interrupt */
+        USBx->GINTMSK |= USB_OTG_GINTMSK_PTXFEM;          
+      }
+      break;
+      
+    default:
+      break;
+    }
+    
+    /* Write packet into the Tx FIFO. */
+    USB_WritePacket(USBx, hc->xfer_buff, hc->ch_num, hc->xfer_len);
+  }
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief Read all host channel interrupts status
+  * @param  USBx : Selected device
+  * @retval HAL state
+  */
+uint32_t USB_HC_ReadInterrupt (USB_OTG_GlobalTypeDef *USBx)
+{
+  return ((USBx_HOST->HAINT) & 0xFFFF);
+}
+
+/**
+  * @brief  Halt a host channel
+  * @param  USBx : Selected device
+  * @param  hc_num : Host Channel number
+  *         This parameter can be a value from 1 to 15
+  * @retval HAL state
+  */
+HAL_StatusTypeDef USB_HC_Halt(USB_OTG_GlobalTypeDef *USBx , uint8_t hc_num)
+{
+  uint32_t count = 0;
+  
+  /* Check for space in the request queue to issue the halt. */
+  if (((USBx_HC(hc_num)->HCCHAR) & (HCCHAR_CTRL << 18)) || ((USBx_HC(hc_num)->HCCHAR) & (HCCHAR_BULK << 18)))
+  {
+    USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHDIS;
+    
+    if ((USBx->HNPTXSTS & 0xFFFF) == 0)
+    {
+      USBx_HC(hc_num)->HCCHAR &= ~USB_OTG_HCCHAR_CHENA;
+      USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHENA;
+      USBx_HC(hc_num)->HCCHAR &= ~USB_OTG_HCCHAR_EPDIR;
+      do
+      {
+        if (++count > 1000)
+        {
+          break;
+        }
+      } 
+      while ((USBx_HC(hc_num)->HCCHAR & USB_OTG_HCCHAR_CHENA) == USB_OTG_HCCHAR_CHENA);
+    }
+    else
+    {
+      USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHENA;
+    }
+  }
+  else
+  {
+    USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHDIS;
+    
+    if ((USBx_HOST->HPTXSTS & 0xFFFF) == 0)
+    {
+      USBx_HC(hc_num)->HCCHAR &= ~USB_OTG_HCCHAR_CHENA;
+      USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHENA;
+      USBx_HC(hc_num)->HCCHAR &= ~USB_OTG_HCCHAR_EPDIR;
+      do
+      {
+        if (++count > 1000)
+        {
+          break;
+        }
+      } 
+      while ((USBx_HC(hc_num)->HCCHAR & USB_OTG_HCCHAR_CHENA) == USB_OTG_HCCHAR_CHENA);
+    }
+    else
+    {
+       USBx_HC(hc_num)->HCCHAR |= USB_OTG_HCCHAR_CHENA; 
+    }
+  }
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Initiate Do Ping protocol
+  * @param  USBx : Selected device
+  * @param  hc_num : Host Channel number
+  *         This parameter can be a value from 1 to 15
+  * @retval HAL state
+  */
+HAL_StatusTypeDef USB_DoPing(USB_OTG_GlobalTypeDef *USBx , uint8_t ch_num)
+{
+  uint8_t  num_packets = 1;
+  uint32_t tmpreg = 0;
+  
+  USBx_HC(ch_num)->HCTSIZ = ((num_packets << 19) & USB_OTG_HCTSIZ_PKTCNT) |\
+                                USB_OTG_HCTSIZ_DOPING;
+  
+  /* Set host channel enable */
+  tmpreg = USBx_HC(ch_num)->HCCHAR;
+  tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
+  tmpreg |= USB_OTG_HCCHAR_CHENA;
+  USBx_HC(ch_num)->HCCHAR = tmpreg;
+  
+  return HAL_OK;  
+}
+
+/**
+  * @brief  Stop Host Core
+  * @param  USBx : Selected device
+  * @retval HAL state
+  */
+HAL_StatusTypeDef USB_StopHost(USB_OTG_GlobalTypeDef *USBx)
+{
+  uint8_t index;
+  uint32_t count = 0;
+  uint32_t value = 0;
+  
+  USB_DisableGlobalInt(USBx);
+  
+    /* Flush FIFO */
+  USB_FlushTxFifo(USBx, 0x10);
+  USB_FlushRxFifo(USBx);
+  
+  /* Flush out any leftover queued requests. */
+  for (index = 0; index <= 15; index++)
+  {
+    value = USBx_HC(index)->HCCHAR;
+    value |=  USB_OTG_HCCHAR_CHDIS;
+    value &= ~USB_OTG_HCCHAR_CHENA;
+    value &= ~USB_OTG_HCCHAR_EPDIR;
+    USBx_HC(index)->HCCHAR = value;
+  }
+  
+  /* Halt all channels to put them into a known state. */
+  for (index = 0; index <= 15; index++)
+  {
+    value = USBx_HC(index)->HCCHAR ;
+    value |= USB_OTG_HCCHAR_CHDIS;
+    value |= USB_OTG_HCCHAR_CHENA;
+    value &= ~USB_OTG_HCCHAR_EPDIR;
+    USBx_HC(index)->HCCHAR = value;
+    
+    do
+    {
+      if (++count > 1000)
+      {
+        break;
+      }
+    }
+    while ((USBx_HC(index)->HCCHAR & USB_OTG_HCCHAR_CHENA) == USB_OTG_HCCHAR_CHENA);
+  }
+  
+  /* Clear any pending Host interrupts */
+  USBx_HOST->HAINT = 0xFFFFFFFF;
+  USBx->GINTSTS = 0xFFFFFFFF;
+  USB_EnableGlobalInt(USBx);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_ActivateRemoteWakeup : active remote wakeup signalling
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_ActivateRemoteWakeup(USB_OTG_GlobalTypeDef *USBx)
+{
+  if((USBx_DEVICE->DSTS & USB_OTG_DSTS_SUSPSTS) == USB_OTG_DSTS_SUSPSTS)
+  {
+    /* active Remote wakeup signalling */
+    USBx_DEVICE->DCTL |= USB_OTG_DCTL_RWUSIG;
+  }
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_DeActivateRemoteWakeup : de-active remote wakeup signalling
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_DeActivateRemoteWakeup(USB_OTG_GlobalTypeDef *USBx)
+{
+  /* active Remote wakeup signalling */
+   USBx_DEVICE->DCTL &= ~(USB_OTG_DCTL_RWUSIG);
+  return HAL_OK;
+}
+
+#endif /* USB_OTG_FS */
+
+/*==============================================================================
+    USB Device FS peripheral available on STM32F102xx and STM32F103xx devices 
+==============================================================================*/
+#if defined (USB)
+/**
+  * @brief  Initializes the USB Core
+  * @param  USBx: USB Instance
+  * @param  cfg : pointer to a USB_CfgTypeDef structure that contains
+  *         the configuration information for the specified USBx peripheral.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_CoreInit(USB_TypeDef *USBx, USB_CfgTypeDef cfg)
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_EnableGlobalInt
+  *         Enables the controller's Global Int in the AHB Config reg
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_EnableGlobalInt(USB_TypeDef *USBx)
+{
+  uint32_t winterruptmask = 0;
+  
+  /* Set winterruptmask variable */
+  winterruptmask = USB_CNTR_CTRM  | USB_CNTR_WKUPM | USB_CNTR_SUSPM | USB_CNTR_ERRM \
+    | USB_CNTR_ESOFM | USB_CNTR_RESETM;
+  
+  /* Set interrupt mask */
+  USBx->CNTR |= winterruptmask;
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_DisableGlobalInt
+  *         Disable the controller's Global Int in the AHB Config reg
+  * @param  USBx : Selected device
+  * @retval HAL status
+*/
+HAL_StatusTypeDef USB_DisableGlobalInt(USB_TypeDef *USBx)
+{
+  uint32_t winterruptmask = 0;
+  
+  /* Set winterruptmask variable */
+  winterruptmask = USB_CNTR_CTRM  | USB_CNTR_WKUPM | USB_CNTR_SUSPM | USB_CNTR_ERRM \
+    | USB_CNTR_ESOFM | USB_CNTR_RESETM;
+  
+  /* Clear interrupt mask */
+  USBx->CNTR &= ~winterruptmask;
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_SetCurrentMode : Set functional mode
+  * @param  USBx : Selected device
+  * @param  mode :  current core mode
+  *          This parameter can be one of the these values:
+  *            @arg USB_DEVICE_MODE: Peripheral mode mode
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_SetCurrentMode(USB_TypeDef *USBx , USB_ModeTypeDef mode)
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_DevInit : Initializes the USB controller registers 
+  *         for device mode
+  * @param  USBx : Selected device
+  * @param  cfg  : pointer to a USB_CfgTypeDef structure that contains
+  *         the configuration information for the specified USBx peripheral.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_DevInit (USB_TypeDef *USBx, USB_CfgTypeDef cfg)
+{    
+  /* Init Device */
+  /*CNTR_FRES = 1*/
+  USBx->CNTR = USB_CNTR_FRES;
+  
+  /*CNTR_FRES = 0*/
+  USBx->CNTR = 0;
+ 
+  /*Clear pending interrupts*/
+  USBx->ISTR = 0;
+  
+  /*Set Btable Address*/
+  USBx->BTABLE = BTABLE_ADDRESS;
+    
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_FlushTxFifo : Flush a Tx FIFO
+  * @param  USBx : Selected device
+  * @param  num : FIFO number
+  *         This parameter can be a value from 1 to 15
+            15 means Flush all Tx FIFOs
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_FlushTxFifo (USB_TypeDef *USBx, uint32_t num )
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_FlushRxFifo : Flush Rx FIFO
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_FlushRxFifo(USB_TypeDef *USBx)
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+  return HAL_OK;
+}
+
+/**
+  * @brief  Activate and configure an endpoint
+  * @param  USBx : Selected device
+  * @param  ep: pointer to endpoint structure
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_ActivateEndpoint(USB_TypeDef *USBx, USB_EPTypeDef *ep)
+{
+  /* initialize Endpoint */
+  switch (ep->type)
+  {
+  case EP_TYPE_CTRL:
+    PCD_SET_EPTYPE(USBx, ep->num, USB_EP_CONTROL);
+    break;
+  case EP_TYPE_BULK:
+    PCD_SET_EPTYPE(USBx, ep->num, USB_EP_BULK);
+    break;
+  case EP_TYPE_INTR:
+    PCD_SET_EPTYPE(USBx, ep->num, USB_EP_INTERRUPT);
+    break;
+  case EP_TYPE_ISOC:
+    PCD_SET_EPTYPE(USBx, ep->num, USB_EP_ISOCHRONOUS);
+    break;
+  default:
+      break;
+  } 
+  
+  PCD_SET_EP_ADDRESS(USBx, ep->num, ep->num);
+  
+  if (ep->doublebuffer == 0) 
+  {
+    if (ep->is_in)
+    {
+      /*Set the endpoint Transmit buffer address */
+      PCD_SET_EP_TX_ADDRESS(USBx, ep->num, ep->pmaadress);
+      PCD_CLEAR_TX_DTOG(USBx, ep->num);
+      /* Configure NAK status for the Endpoint*/
+      PCD_SET_EP_TX_STATUS(USBx, ep->num, USB_EP_TX_NAK); 
+    }
+    else
+    {
+      /*Set the endpoint Receive buffer address */
+      PCD_SET_EP_RX_ADDRESS(USBx, ep->num, ep->pmaadress);
+      /*Set the endpoint Receive buffer counter*/
+      PCD_SET_EP_RX_CNT(USBx, ep->num, ep->maxpacket);
+      PCD_CLEAR_RX_DTOG(USBx, ep->num);
+      /* Configure VALID status for the Endpoint*/
+      PCD_SET_EP_RX_STATUS(USBx, ep->num, USB_EP_RX_VALID);
+    }
+  }
+  /*Double Buffer*/
+  else
+  {
+    /*Set the endpoint as double buffered*/
+    PCD_SET_EP_DBUF(USBx, ep->num);
+    /*Set buffer address for double buffered mode*/
+    PCD_SET_EP_DBUF_ADDR(USBx, ep->num,ep->pmaaddr0, ep->pmaaddr1);
+    
+    if (ep->is_in==0)
+    {
+      /* Clear the data toggle bits for the endpoint IN/OUT*/
+      PCD_CLEAR_RX_DTOG(USBx, ep->num);
+      PCD_CLEAR_TX_DTOG(USBx, ep->num);
+      
+      /* Reset value of the data toggle bits for the endpoint out*/
+      PCD_TX_DTOG(USBx, ep->num);
+      
+      PCD_SET_EP_RX_STATUS(USBx, ep->num, USB_EP_RX_VALID);
+      PCD_SET_EP_TX_STATUS(USBx, ep->num, USB_EP_TX_DIS);
+    }
+    else
+    {
+      /* Clear the data toggle bits for the endpoint IN/OUT*/
+      PCD_CLEAR_RX_DTOG(USBx, ep->num);
+      PCD_CLEAR_TX_DTOG(USBx, ep->num);
+      PCD_RX_DTOG(USBx, ep->num);
+      /* Configure DISABLE status for the Endpoint*/
+      PCD_SET_EP_TX_STATUS(USBx, ep->num, USB_EP_TX_DIS);
+      PCD_SET_EP_RX_STATUS(USBx, ep->num, USB_EP_RX_DIS);
+    }
+  }
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  De-activate and de-initialize an endpoint
+  * @param  USBx : Selected device
+  * @param  ep: pointer to endpoint structure
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_DeactivateEndpoint(USB_TypeDef *USBx, USB_EPTypeDef *ep)
+{
+  if (ep->doublebuffer == 0) 
+  {
+    if (ep->is_in)
+    {
+      PCD_CLEAR_TX_DTOG(USBx, ep->num);
+      /* Configure DISABLE status for the Endpoint*/
+      PCD_SET_EP_TX_STATUS(USBx, ep->num, USB_EP_TX_DIS); 
+    }
+    else
+    {
+      PCD_CLEAR_RX_DTOG(USBx, ep->num);
+      /* Configure DISABLE status for the Endpoint*/
+      PCD_SET_EP_RX_STATUS(USBx, ep->num, USB_EP_RX_DIS);
+    }
+  }
+  /*Double Buffer*/
+  else
+  { 
+    if (ep->is_in==0)
+    {
+      /* Clear the data toggle bits for the endpoint IN/OUT*/
+      PCD_CLEAR_RX_DTOG(USBx, ep->num);
+      PCD_CLEAR_TX_DTOG(USBx, ep->num);
+      
+      /* Reset value of the data toggle bits for the endpoint out*/
+      PCD_TX_DTOG(USBx, ep->num);
+      
+      PCD_SET_EP_RX_STATUS(USBx, ep->num, USB_EP_RX_DIS);
+      PCD_SET_EP_TX_STATUS(USBx, ep->num, USB_EP_TX_DIS);
+    }
+    else
+    {
+      /* Clear the data toggle bits for the endpoint IN/OUT*/
+      PCD_CLEAR_RX_DTOG(USBx, ep->num);
+      PCD_CLEAR_TX_DTOG(USBx, ep->num);
+      PCD_RX_DTOG(USBx, ep->num);
+      /* Configure DISABLE status for the Endpoint*/
+      PCD_SET_EP_TX_STATUS(USBx, ep->num, USB_EP_TX_DIS);
+      PCD_SET_EP_RX_STATUS(USBx, ep->num, USB_EP_RX_DIS);
+    }
+  }
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_EPStartXfer : setup and starts a transfer over an EP
+  * @param  USBx : Selected device
+  * @param  ep: pointer to endpoint structure
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_EPStartXfer(USB_TypeDef *USBx , USB_EPTypeDef *ep)
+{
+  uint16_t pmabuffer = 0;
+  uint32_t len = ep->xfer_len;
+  
+  /* IN endpoint */
+  if (ep->is_in == 1)
+  {
+    /*Multi packet transfer*/
+    if (ep->xfer_len > ep->maxpacket)
+    {
+      len=ep->maxpacket;
+      ep->xfer_len-=len; 
+    }
+    else
+    {  
+      len=ep->xfer_len;
+      ep->xfer_len =0;
+    }
+    
+    /* configure and validate Tx endpoint */
+    if (ep->doublebuffer == 0) 
+    {
+      USB_WritePMA(USBx, ep->xfer_buff, ep->pmaadress, len);
+      PCD_SET_EP_TX_CNT(USBx, ep->num, len);
+    }
+    else
+    {
+      /* Write the data to the USB endpoint */
+      if (PCD_GET_ENDPOINT(USBx, ep->num)& USB_EP_DTOG_TX)
+      {
+        /* Set the Double buffer counter for pmabuffer1 */
+        PCD_SET_EP_DBUF1_CNT(USBx, ep->num, ep->is_in, len);
+        pmabuffer = ep->pmaaddr1;
+      }
+      else
+      {
+        /* Set the Double buffer counter for pmabuffer0 */
+        PCD_SET_EP_DBUF0_CNT(USBx, ep->num, ep->is_in, len);
+        pmabuffer = ep->pmaaddr0;
+      }
+      USB_WritePMA(USBx, ep->xfer_buff, pmabuffer, len);
+      PCD_FreeUserBuffer(USBx, ep->num, ep->is_in);
+    }
+    
+    PCD_SET_EP_TX_STATUS(USBx, ep->num, USB_EP_TX_VALID);
+  }
+  else /* OUT endpoint */
+  {
+    /* Multi packet transfer*/
+    if (ep->xfer_len > ep->maxpacket)
+    {
+      len=ep->maxpacket;
+      ep->xfer_len-=len; 
+    }
+    else
+    {
+      len=ep->xfer_len;
+      ep->xfer_len =0;
+    }
+    
+    /* configure and validate Rx endpoint */
+    if (ep->doublebuffer == 0) 
+    {
+      /*Set RX buffer count*/
+      PCD_SET_EP_RX_CNT(USBx, ep->num, len);
+    }
+    else
+    {
+      /*Set the Double buffer counter*/
+      PCD_SET_EP_DBUF_CNT(USBx, ep->num, ep->is_in, len);
+    }
+    
+    PCD_SET_EP_RX_STATUS(USBx, ep->num, USB_EP_RX_VALID);
+  }
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_WritePacket : Writes a packet into the Tx FIFO associated 
+  *         with the EP/channel
+  * @param  USBx : Selected device
+  * @param  src :  pointer to source buffer
+  * @param  ch_ep_num : endpoint or host channel number
+  * @param  len : Number of bytes to write
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_WritePacket(USB_TypeDef *USBx, uint8_t *src, uint8_t ch_ep_num, uint16_t len)
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_ReadPacket : read a packet from the Tx FIFO associated 
+  *         with the EP/channel
+  * @param  USBx : Selected device
+  * @param  dest : destination pointer
+  * @param  len : Number of bytes to read
+  * @retval pointer to destination buffer
+  */
+void *USB_ReadPacket(USB_TypeDef *USBx, uint8_t *dest, uint16_t len)
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+  return ((void *)NULL);
+}
+
+/**
+  * @brief  USB_EPSetStall : set a stall condition over an EP
+  * @param  USBx : Selected device
+  * @param  ep: pointer to endpoint structure   
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_EPSetStall(USB_TypeDef *USBx , USB_EPTypeDef *ep)
+{
+  if (ep->num == 0)
+  {
+    /* This macro sets STALL status for RX & TX*/ 
+    PCD_SET_EP_TXRX_STATUS(USBx, ep->num, USB_EP_RX_STALL, USB_EP_TX_STALL); 
+  }
+  else
+  {
+    if (ep->is_in)
+    {
+      PCD_SET_EP_TX_STATUS(USBx, ep->num , USB_EP_TX_STALL); 
+    }
+    else
+    {
+      PCD_SET_EP_RX_STATUS(USBx, ep->num , USB_EP_RX_STALL);
+    }
+  }
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_EPClearStall : Clear a stall condition over an EP
+  * @param  USBx : Selected device
+  * @param  ep: pointer to endpoint structure
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_EPClearStall(USB_TypeDef *USBx, USB_EPTypeDef *ep)
+{
+  if (ep->is_in)
+  {
+    PCD_CLEAR_TX_DTOG(USBx, ep->num);
+    PCD_SET_EP_TX_STATUS(USBx, ep->num, USB_EP_TX_VALID);
+  }
+  else
+  {
+    PCD_CLEAR_RX_DTOG(USBx, ep->num);
+    PCD_SET_EP_RX_STATUS(USBx, ep->num, USB_EP_RX_VALID);
+  }
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_StopDevice : Stop the usb device mode
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_StopDevice(USB_TypeDef *USBx)
+{
+  /* disable all interrupts and force USB reset */
+  USBx->CNTR = USB_CNTR_FRES;
+  
+  /* clear interrupt status register */
+  USBx->ISTR = 0;
+  
+  /* switch-off device */
+  USBx->CNTR = (USB_CNTR_FRES | USB_CNTR_PDWN);
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_SetDevAddress : Stop the usb device mode
+  * @param  USBx : Selected device
+  * @param  address : new device address to be assigned
+  *          This parameter can be a value from 0 to 255
+  * @retval HAL status
+  */
+HAL_StatusTypeDef  USB_SetDevAddress (USB_TypeDef *USBx, uint8_t address)
+{
+  if(address == 0) 
+  {
+   /* set device address and enable function */
+   USBx->DADDR = USB_DADDR_EF;
+  }
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_DevConnect : Connect the USB device by enabling the pull-up/pull-down
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef  USB_DevConnect (USB_TypeDef *USBx)
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_DevDisconnect : Disconnect the USB device by disabling the pull-up/pull-down
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef  USB_DevDisconnect (USB_TypeDef *USBx)
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_ReadInterrupts: return the global USB interrupt status
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+uint32_t  USB_ReadInterrupts (USB_TypeDef *USBx)
+{
+  uint32_t tmpreg = 0;
+  
+  tmpreg = USBx->ISTR;
+  return tmpreg;
+}
+
+/**
+  * @brief  USB_ReadDevAllOutEpInterrupt: return the USB device OUT endpoints interrupt status
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+uint32_t USB_ReadDevAllOutEpInterrupt (USB_TypeDef *USBx)
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+  return (0);
+}
+
+/**
+  * @brief  USB_ReadDevAllInEpInterrupt: return the USB device IN endpoints interrupt status
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+uint32_t USB_ReadDevAllInEpInterrupt (USB_TypeDef *USBx)
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+  return (0);
+}
+
+/**
+  * @brief  Returns Device OUT EP Interrupt register
+  * @param  USBx : Selected device
+  * @param  epnum : endpoint number
+  *          This parameter can be a value from 0 to 15
+  * @retval Device OUT EP Interrupt register
+  */
+uint32_t USB_ReadDevOutEPInterrupt (USB_TypeDef *USBx , uint8_t epnum)
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+  return (0);
+}
+
+/**
+  * @brief  Returns Device IN EP Interrupt register
+  * @param  USBx : Selected device
+  * @param  epnum : endpoint number
+  *          This parameter can be a value from 0 to 15
+  * @retval Device IN EP Interrupt register
+  */
+uint32_t USB_ReadDevInEPInterrupt (USB_TypeDef *USBx , uint8_t epnum)
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+  return (0);
+}
+
+/**
+  * @brief  USB_ClearInterrupts: clear a USB interrupt
+  * @param  USBx : Selected device
+  * @param  interrupt : interrupt flag
+  * @retval None
+  */
+void  USB_ClearInterrupts (USB_TypeDef *USBx, uint32_t interrupt)
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+}
+
+/**
+  * @brief  Prepare the EP0 to start the first control setup
+  * @param  USBx : Selected device
+  * @param  psetup : pointer to setup packet
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_EP0_OutStart(USB_TypeDef *USBx, uint8_t *psetup)
+{
+  /* NOTE : - This function is not required by USB Device FS peripheral, it is used 
+              only by USB OTG FS peripheral.
+            - This function is added to ensure compatibility across platforms.
+   */
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_ActivateRemoteWakeup : active remote wakeup signalling
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_ActivateRemoteWakeup(USB_TypeDef *USBx)
+{
+  USBx->CNTR |= USB_CNTR_RESUME;
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  USB_DeActivateRemoteWakeup : de-active remote wakeup signalling
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+HAL_StatusTypeDef USB_DeActivateRemoteWakeup(USB_TypeDef *USBx)
+{
+  USBx->CNTR &= ~(USB_CNTR_RESUME);
+  return HAL_OK;
+}
+
+/**
+  * @brief  Copy a buffer from user memory area to packet memory area (PMA)
+  * @param  USBx : pointer to USB register.
+  * @param  pbUsrBuf : pointer to user memory area.
+  * @param  wPMABufAddr : address into PMA.
+  * @param  wNBytes : number of bytes to be copied.
+  * @retval None
+  */
+void USB_WritePMA(USB_TypeDef *USBx, uint8_t *pbUsrBuf, uint16_t wPMABufAddr, uint16_t wNBytes)
+{
+  uint32_t nbytes = (wNBytes + 1) >> 1;   /* nbytes = (wNBytes + 1) / 2 */
+  uint32_t index = 0, temp1 = 0, temp2 = 0;
+  uint16_t *pdwVal = NULL;
+  
+  pdwVal = (uint16_t *)(wPMABufAddr * 2 + (uint32_t)USBx + 0x400);
+  for (index = nbytes; index != 0; index--)
+  {
+    temp1 = (uint16_t) * pbUsrBuf;
+    pbUsrBuf++;
+    temp2 = temp1 | (uint16_t) * pbUsrBuf << 8;
+    *pdwVal++ = temp2;
+    pdwVal++;
+    pbUsrBuf++;
+  }
+}
+
+/**
+  * @brief  Copy a buffer from user memory area to packet memory area (PMA)
+  * @param  USBx : pointer to USB register.
+* @param  pbUsrBuf : pointer to user memory area.
+  * @param  wPMABufAddr : address into PMA.
+  * @param  wNBytes : number of bytes to be copied.
+  * @retval None
+  */
+void USB_ReadPMA(USB_TypeDef *USBx, uint8_t *pbUsrBuf, uint16_t wPMABufAddr, uint16_t wNBytes)
+{
+  uint32_t nbytes = (wNBytes + 1) >> 1;/* /2*/
+  uint32_t index = 0;
+  uint32_t *pdwVal = NULL;
+  
+  pdwVal = (uint32_t *)(wPMABufAddr * 2 + (uint32_t)USBx + 0x400);
+  for (index = nbytes; index != 0; index--)
+  {
+    *(uint16_t*)pbUsrBuf++ = *pdwVal++;
+    pbUsrBuf++;
+  }
+}
+
+#endif /* USB */
+
+/**
+  * @}
+  */
+/**
+  * @}
+  */
+
+#if defined (USB_OTG_FS)
+/** @addtogroup USB_LL_Private_Functions
+  * @{
+  */
+/**
+  * @brief  Reset the USB Core (needed after USB clock settings change)
+  * @param  USBx : Selected device
+  * @retval HAL status
+  */
+static HAL_StatusTypeDef USB_CoreReset(USB_OTG_GlobalTypeDef *USBx)
+{
+  uint32_t count = 0;
+  
+  /* Wait for AHB master IDLE state. */
+  do
+  {
+    if (++count > 200000)
+    {
+      return HAL_TIMEOUT;
+    }
+  }
+  while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_AHBIDL) == 0);
+  
+  /* Core Soft Reset */
+  count = 0;
+  USBx->GRSTCTL |= USB_OTG_GRSTCTL_CSRST;
+  
+  do
+  {
+    if (++count > 200000)
+    {
+      return HAL_TIMEOUT;
+    }
+  }
+  while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_CSRST) == USB_OTG_GRSTCTL_CSRST);
+  
+  return HAL_OK;
+}
+/**
+  * @}
+  */
+#endif /* USB_OTG_FS */
+
+#endif /* STM32F102x6 || STM32F102xB || */
+       /* STM32F103x6 || STM32F103xB || */
+       /* STM32F103xE || STM32F103xG || */
+       /* STM32F105xC || STM32F107xC    */
+
+#endif /* defined (HAL_PCD_MODULE_ENABLED) || defined (HAL_HCD_MODULE_ENABLED) */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Inc/main.h b/stm32cubemx/Inc/main.h
index 6e20349..951e332 100644
--- a/stm32cubemx/Inc/main.h
+++ b/stm32cubemx/Inc/main.h
@@ -4,29 +4,39 @@
   * Description        : This file contains the common defines of the application
   ******************************************************************************
   *
-  * COPYRIGHT(c) 2017 STMicroelectronics
+  * Copyright (c) 2017 STMicroelectronics International N.V. 
+  * All rights reserved.
   *
-  * Redistribution and use in source and binary forms, with or without modification,
-  * are permitted provided that the following conditions are met:
-  *   1. Redistributions of source code must retain the above copyright notice,
-  *      this list of conditions and the following disclaimer.
-  *   2. Redistributions in binary form must reproduce the above copyright notice,
-  *      this list of conditions and the following disclaimer in the documentation
-  *      and/or other materials provided with the distribution.
-  *   3. Neither the name of STMicroelectronics nor the names of its contributors
-  *      may be used to endorse or promote products derived from this software
-  *      without specific prior written permission.
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
   *
-  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   ******************************************************************************
   */
@@ -36,11 +46,12 @@
   /* Includes ------------------------------------------------------------------*/
 
 /* USER CODE BEGIN Includes */
-
+#include "stm32f1xx_hal_dma.h"
+#include "stm32f1xx_hal_tim.h"
 /* USER CODE END Includes */
 
 /* Private define ------------------------------------------------------------*/
-#define RX_TIMER_PRESCALER 72000000 / 2000
+#define RX_TIMER_PRESCALER (72000000 / 2000)
 
 /* USER CODE BEGIN Private defines */
 #ifdef __cplusplus
@@ -51,6 +62,8 @@ void main_pre_init();
 void main_post_init();
 void main_loop();
 
+void it_tim1(TIM_HandleTypeDef *htim1);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/stm32cubemx/Inc/stm32f1xx_hal_conf.h b/stm32cubemx/Inc/stm32f1xx_hal_conf.h
index 463c8ba..2364650 100644
--- a/stm32cubemx/Inc/stm32f1xx_hal_conf.h
+++ b/stm32cubemx/Inc/stm32f1xx_hal_conf.h
@@ -64,11 +64,11 @@
 /*#define HAL_I2C_MODULE_ENABLED   */
 /*#define HAL_I2S_MODULE_ENABLED   */
 /*#define HAL_IRDA_MODULE_ENABLED   */
-#define HAL_IWDG_MODULE_ENABLED
+/*#define HAL_IWDG_MODULE_ENABLED   */
 /*#define HAL_NOR_MODULE_ENABLED   */
 /*#define HAL_NAND_MODULE_ENABLED   */
 /*#define HAL_PCCARD_MODULE_ENABLED   */
-/*#define HAL_PCD_MODULE_ENABLED   */
+#define HAL_PCD_MODULE_ENABLED
 /*#define HAL_HCD_MODULE_ENABLED   */
 /*#define HAL_PWR_MODULE_ENABLED   */
 /*#define HAL_RCC_MODULE_ENABLED   */
diff --git a/stm32cubemx/Inc/stm32f1xx_it.h b/stm32cubemx/Inc/stm32f1xx_it.h
index 73ada16..e0322ac 100644
--- a/stm32cubemx/Inc/stm32f1xx_it.h
+++ b/stm32cubemx/Inc/stm32f1xx_it.h
@@ -55,6 +55,8 @@ void DebugMon_Handler(void);
 void PendSV_Handler(void);
 void SysTick_Handler(void);
 void DMA1_Channel2_IRQHandler(void);
+void USB_HP_CAN1_TX_IRQHandler(void);
+void USB_LP_CAN1_RX0_IRQHandler(void);
 void TIM1_TRG_COM_IRQHandler(void);
 
 #ifdef __cplusplus
diff --git a/stm32cubemx/Inc/usb_device.h b/stm32cubemx/Inc/usb_device.h
new file mode 100644
index 0000000..0a6b011
--- /dev/null
+++ b/stm32cubemx/Inc/usb_device.h
@@ -0,0 +1,74 @@
+/**
+  ******************************************************************************
+  * @file           : USB_DEVICE
+  * @version        : v2.0_Cube
+  * @brief          : Header for usb_device file.
+  ******************************************************************************
+  *
+  * Copyright (c) 2017 STMicroelectronics International N.V. 
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+*/
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __usb_device_H
+#define __usb_device_H
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx.h"
+#include "stm32f1xx_hal.h"
+#include "usbd_def.h"
+
+extern USBD_HandleTypeDef hUsbDeviceFS;
+
+/* USB_Device init function */	
+void MX_USB_DEVICE_Init(void);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /*__usb_device_H */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Inc/usbd_cdc_if.h b/stm32cubemx/Inc/usbd_cdc_if.h
new file mode 100644
index 0000000..46341fd
--- /dev/null
+++ b/stm32cubemx/Inc/usbd_cdc_if.h
@@ -0,0 +1,132 @@
+/**
+  ******************************************************************************
+  * @file           : usbd_cdc_if.h
+  * @brief          : Header for usbd_cdc_if file.
+  ******************************************************************************
+  *
+  * Copyright (c) 2017 STMicroelectronics International N.V. 
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+*/
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_CDC_IF_H
+#define __USBD_CDC_IF_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_cdc.h"
+/* USER CODE BEGIN INCLUDE */
+/* USER CODE END INCLUDE */
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+  * @{
+  */
+  
+/** @defgroup USBD_CDC_IF
+  * @brief header 
+  * @{
+  */ 
+
+/** @defgroup USBD_CDC_IF_Exported_Defines
+  * @{
+  */ 
+/* USER CODE BEGIN EXPORTED_DEFINES */
+/* USER CODE END EXPORTED_DEFINES */
+
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_CDC_IF_Exported_Types
+  * @{
+  */  
+/* USER CODE BEGIN EXPORTED_TYPES */
+/* USER CODE END EXPORTED_TYPES */
+
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_CDC_IF_Exported_Macros
+  * @{
+  */ 
+/* USER CODE BEGIN EXPORTED_MACRO */
+/* USER CODE END EXPORTED_MACRO */
+
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_AUDIO_IF_Exported_Variables
+  * @{
+  */ 
+extern USBD_CDC_ItfTypeDef  USBD_Interface_fops_FS;
+
+/* USER CODE BEGIN EXPORTED_VARIABLES */
+/* USER CODE END EXPORTED_VARIABLES */
+
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_CDC_IF_Exported_FunctionsPrototype
+  * @{
+  */ 
+uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len);
+
+/* USER CODE BEGIN EXPORTED_FUNCTIONS */
+/* USER CODE END EXPORTED_FUNCTIONS */
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+  
+#ifdef __cplusplus
+}
+#endif
+  
+#endif /* __USBD_CDC_IF_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Inc/usbd_conf.h b/stm32cubemx/Inc/usbd_conf.h
new file mode 100644
index 0000000..137f8d0
--- /dev/null
+++ b/stm32cubemx/Inc/usbd_conf.h
@@ -0,0 +1,186 @@
+/**
+  ******************************************************************************
+  * @file           : usbd_conf.h
+  * @version        : v2.0_Cube
+  * @brief          : Header for usbd_conf file.
+  ******************************************************************************
+  *
+  * Copyright (c) 2017 STMicroelectronics International N.V. 
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+*/
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_CONF__H__
+#define __USBD_CONF__H__
+#ifdef __cplusplus
+ extern "C" {
+#endif
+/* Includes ------------------------------------------------------------------*/
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "stm32f1xx.h"
+#include "stm32f1xx_hal.h"
+#include "usbd_def.h"
+
+/** @addtogroup USBD_OTG_DRIVER
+  * @{
+  */
+  
+/** @defgroup USBD_CONF
+  * @brief usb otg low level driver configuration file
+  * @{
+  */ 
+
+/** @defgroup USBD_CONF_Exported_Defines
+  * @{
+  */ 
+
+/*---------- -----------*/
+#define USBD_MAX_NUM_INTERFACES     1
+/*---------- -----------*/
+#define USBD_MAX_NUM_CONFIGURATION     1
+/*---------- -----------*/
+#define USBD_MAX_STR_DESC_SIZ     512
+/*---------- -----------*/
+#define USBD_SUPPORT_USER_STRING     0
+/*---------- -----------*/
+#define USBD_DEBUG_LEVEL     0
+/*---------- -----------*/
+#define USBD_SELF_POWERED     1
+/*---------- -----------*/
+#define USBD_CDC_INTERVAL     1000
+/*---------- -----------*/
+#define MAX_STATIC_ALLOC_SIZE     512
+/****************************************/
+/* #define for FS and HS identification */
+#define DEVICE_FS 		0
+
+/** @defgroup USBD_Exported_Macros
+  * @{
+  */ 
+
+/* Memory management macros */  
+#define USBD_malloc               (uint32_t *)USBD_static_malloc
+#define USBD_free                 USBD_static_free
+#define USBD_memset               /* Not used */
+#define USBD_memcpy               /* Not used */
+
+#define USBD_Delay   HAL_Delay
+
+/* For footprint reasons and since only one allocation is handled in the HID class
+   driver, the malloc/free is changed into a static allocation method */
+void *USBD_static_malloc(uint32_t size);
+void USBD_static_free(void *p);    
+
+/* DEBUG macros */    
+#if (USBD_DEBUG_LEVEL > 0)
+#define  USBD_UsrLog(...)   printf(__VA_ARGS__);\
+                            printf("\n");
+#else
+#define USBD_UsrLog(...)   
+#endif 
+                            
+                            
+#if (USBD_DEBUG_LEVEL > 1)
+
+#define  USBD_ErrLog(...)   printf("ERROR: ") ;\
+                            printf(__VA_ARGS__);\
+                            printf("\n");
+#else
+#define USBD_ErrLog(...)   
+#endif 
+                            
+                            
+#if (USBD_DEBUG_LEVEL > 2)                         
+#define  USBD_DbgLog(...)   printf("DEBUG : ") ;\
+                            printf(__VA_ARGS__);\
+                            printf("\n");
+#else
+#define USBD_DbgLog(...)                         
+#endif
+                            
+/**
+  * @}
+  */ 
+ 
+    
+    
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_CONF_Exported_Types
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_CONF_Exported_Macros
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_CONF_Exported_Variables
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_CONF_Exported_FunctionsPrototype
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*__USBD_CONF__H__*/
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
diff --git a/stm32cubemx/Inc/usbd_desc.h b/stm32cubemx/Inc/usbd_desc.h
new file mode 100644
index 0000000..7ba669c
--- /dev/null
+++ b/stm32cubemx/Inc/usbd_desc.h
@@ -0,0 +1,114 @@
+/**
+  ******************************************************************************
+  * @file           : usbd_desc.h
+  * @version        : v2.0_Cube
+  * @brief          : Header for usbd_desc file.
+  ******************************************************************************
+  *
+  * Copyright (c) 2017 STMicroelectronics International N.V. 
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+*/
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_DESC__H__
+#define __USBD_DESC__H__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_def.h"
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+  * @{
+  */
+  
+/** @defgroup USB_DESC
+  * @brief general defines for the usb device library file
+  * @{
+  */ 
+
+/** @defgroup USB_DESC_Exported_Defines
+  * @{
+  */
+
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_DESC_Exported_TypesDefinitions
+  * @{
+  */
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_DESC_Exported_Macros
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_DESC_Exported_Variables
+  * @{
+  */ 
+extern USBD_DescriptorsTypeDef FS_Desc;
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_DESC_Exported_FunctionsPrototype
+  * @{
+  */ 
+  
+/**
+  * @}
+  */ 
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_DESC_H */
+
+/**
+  * @}
+  */ 
+
+/**
+* @}
+*/ 
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc/usbd_cdc.h b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc/usbd_cdc.h
new file mode 100644
index 0000000..d937b2e
--- /dev/null
+++ b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc/usbd_cdc.h
@@ -0,0 +1,179 @@
+/**
+  ******************************************************************************
+  * @file    usbd_cdc.h
+  * @author  MCD Application Team
+  * @version V2.4.2
+  * @date    11-December-2015
+  * @brief   header file for the usbd_cdc.c file.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+ 
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USB_CDC_H
+#define __USB_CDC_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include  "usbd_ioreq.h"
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+  * @{
+  */
+  
+/** @defgroup usbd_cdc
+  * @brief This file is the Header file for usbd_cdc.c
+  * @{
+  */ 
+
+
+/** @defgroup usbd_cdc_Exported_Defines
+  * @{
+  */ 
+#define CDC_IN_EP                                   0x81  /* EP1 for data IN */
+#define CDC_OUT_EP                                  0x01  /* EP1 for data OUT */
+#define CDC_CMD_EP                                  0x82  /* EP2 for CDC commands */
+
+/* CDC Endpoints parameters: you can fine tune these values depending on the needed baudrates and performance. */
+#define CDC_DATA_HS_MAX_PACKET_SIZE                 512  /* Endpoint IN & OUT Packet size */
+#define CDC_DATA_FS_MAX_PACKET_SIZE                 64  /* Endpoint IN & OUT Packet size */
+#define CDC_CMD_PACKET_SIZE                         8  /* Control Endpoint Packet size */ 
+
+#define USB_CDC_CONFIG_DESC_SIZ                     67
+#define CDC_DATA_HS_IN_PACKET_SIZE                  CDC_DATA_HS_MAX_PACKET_SIZE
+#define CDC_DATA_HS_OUT_PACKET_SIZE                 CDC_DATA_HS_MAX_PACKET_SIZE
+
+#define CDC_DATA_FS_IN_PACKET_SIZE                  CDC_DATA_FS_MAX_PACKET_SIZE
+#define CDC_DATA_FS_OUT_PACKET_SIZE                 CDC_DATA_FS_MAX_PACKET_SIZE
+
+/*---------------------------------------------------------------------*/
+/*  CDC definitions                                                    */
+/*---------------------------------------------------------------------*/
+#define CDC_SEND_ENCAPSULATED_COMMAND               0x00
+#define CDC_GET_ENCAPSULATED_RESPONSE               0x01
+#define CDC_SET_COMM_FEATURE                        0x02
+#define CDC_GET_COMM_FEATURE                        0x03
+#define CDC_CLEAR_COMM_FEATURE                      0x04
+#define CDC_SET_LINE_CODING                         0x20
+#define CDC_GET_LINE_CODING                         0x21
+#define CDC_SET_CONTROL_LINE_STATE                  0x22
+#define CDC_SEND_BREAK                              0x23
+
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_CORE_Exported_TypesDefinitions
+  * @{
+  */
+
+/**
+  * @}
+  */ 
+typedef struct
+{
+  uint32_t bitrate;
+  uint8_t  format;
+  uint8_t  paritytype;
+  uint8_t  datatype;
+}USBD_CDC_LineCodingTypeDef;
+
+typedef struct _USBD_CDC_Itf
+{
+  int8_t (* Init)          (void);
+  int8_t (* DeInit)        (void);
+  int8_t (* Control)       (uint8_t, uint8_t * , uint16_t);   
+  int8_t (* Receive)       (uint8_t *, uint32_t *);  
+
+}USBD_CDC_ItfTypeDef;
+
+
+typedef struct
+{
+  uint32_t data[CDC_DATA_HS_MAX_PACKET_SIZE/4];      /* Force 32bits alignment */
+  uint8_t  CmdOpCode;
+  uint8_t  CmdLength;    
+  uint8_t  *RxBuffer;  
+  uint8_t  *TxBuffer;   
+  uint32_t RxLength;
+  uint32_t TxLength;    
+  
+  __IO uint32_t TxState;     
+  __IO uint32_t RxState;    
+}
+USBD_CDC_HandleTypeDef; 
+
+
+
+/** @defgroup USBD_CORE_Exported_Macros
+  * @{
+  */ 
+  
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_CORE_Exported_Variables
+  * @{
+  */ 
+
+extern USBD_ClassTypeDef  USBD_CDC;
+#define USBD_CDC_CLASS    &USBD_CDC
+/**
+  * @}
+  */ 
+
+/** @defgroup USB_CORE_Exported_Functions
+  * @{
+  */
+uint8_t  USBD_CDC_RegisterInterface  (USBD_HandleTypeDef   *pdev, 
+                                      USBD_CDC_ItfTypeDef *fops);
+
+uint8_t  USBD_CDC_SetTxBuffer        (USBD_HandleTypeDef   *pdev,
+                                      uint8_t  *pbuff,
+                                      uint16_t length);
+
+uint8_t  USBD_CDC_SetRxBuffer        (USBD_HandleTypeDef   *pdev,
+                                      uint8_t  *pbuff);
+  
+uint8_t  USBD_CDC_ReceivePacket      (USBD_HandleTypeDef *pdev);
+
+uint8_t  USBD_CDC_TransmitPacket     (USBD_HandleTypeDef *pdev);
+/**
+  * @}
+  */ 
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* __USB_CDC_H */
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+  
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c
new file mode 100644
index 0000000..b2ca5f1
--- /dev/null
+++ b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c
@@ -0,0 +1,925 @@
+/**
+  ******************************************************************************
+  * @file    usbd_cdc.c
+  * @author  MCD Application Team
+  * @version V2.4.2
+  * @date    11-December-2015
+  * @brief   This file provides the high layer firmware functions to manage the 
+  *          following functionalities of the USB CDC Class:
+  *           - Initialization and Configuration of high and low layer
+  *           - Enumeration as CDC Device (and enumeration for each implemented memory interface)
+  *           - OUT/IN data transfer
+  *           - Command IN transfer (class requests management)
+  *           - Error management
+  *           
+  *  @verbatim
+  *      
+  *          ===================================================================      
+  *                                CDC Class Driver Description
+  *          =================================================================== 
+  *           This driver manages the "Universal Serial Bus Class Definitions for Communications Devices
+  *           Revision 1.2 November 16, 2007" and the sub-protocol specification of "Universal Serial Bus 
+  *           Communications Class Subclass Specification for PSTN Devices Revision 1.2 February 9, 2007"
+  *           This driver implements the following aspects of the specification:
+  *             - Device descriptor management
+  *             - Configuration descriptor management
+  *             - Enumeration as CDC device with 2 data endpoints (IN and OUT) and 1 command endpoint (IN)
+  *             - Requests management (as described in section 6.2 in specification)
+  *             - Abstract Control Model compliant
+  *             - Union Functional collection (using 1 IN endpoint for control)
+  *             - Data interface class
+  * 
+  *           These aspects may be enriched or modified for a specific user application.
+  *          
+  *            This driver doesn't implement the following aspects of the specification 
+  *            (but it is possible to manage these features with some modifications on this driver):
+  *             - Any class-specific aspect relative to communication classes should be managed by user application.
+  *             - All communication classes other than PSTN are not managed
+  *      
+  *  @endverbatim
+  *                                  
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_cdc.h"
+#include "usbd_desc.h"
+#include "usbd_ctlreq.h"
+
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+  * @{
+  */
+
+
+/** @defgroup USBD_CDC 
+  * @brief usbd core module
+  * @{
+  */ 
+
+/** @defgroup USBD_CDC_Private_TypesDefinitions
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_CDC_Private_Defines
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_CDC_Private_Macros
+  * @{
+  */ 
+
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_CDC_Private_FunctionPrototypes
+  * @{
+  */
+
+
+static uint8_t  USBD_CDC_Init (USBD_HandleTypeDef *pdev, 
+                               uint8_t cfgidx);
+
+static uint8_t  USBD_CDC_DeInit (USBD_HandleTypeDef *pdev, 
+                                 uint8_t cfgidx);
+
+static uint8_t  USBD_CDC_Setup (USBD_HandleTypeDef *pdev, 
+                                USBD_SetupReqTypedef *req);
+
+static uint8_t  USBD_CDC_DataIn (USBD_HandleTypeDef *pdev, 
+                                 uint8_t epnum);
+
+static uint8_t  USBD_CDC_DataOut (USBD_HandleTypeDef *pdev, 
+                                 uint8_t epnum);
+
+static uint8_t  USBD_CDC_EP0_RxReady (USBD_HandleTypeDef *pdev);
+
+static uint8_t  *USBD_CDC_GetFSCfgDesc (uint16_t *length);
+
+static uint8_t  *USBD_CDC_GetHSCfgDesc (uint16_t *length);
+
+static uint8_t  *USBD_CDC_GetOtherSpeedCfgDesc (uint16_t *length);
+
+static uint8_t  *USBD_CDC_GetOtherSpeedCfgDesc (uint16_t *length);
+
+uint8_t  *USBD_CDC_GetDeviceQualifierDescriptor (uint16_t *length);
+
+/* USB Standard Device Descriptor */
+__ALIGN_BEGIN static uint8_t USBD_CDC_DeviceQualifierDesc[USB_LEN_DEV_QUALIFIER_DESC] __ALIGN_END =
+{
+  USB_LEN_DEV_QUALIFIER_DESC,
+  USB_DESC_TYPE_DEVICE_QUALIFIER,
+  0x00,
+  0x02,
+  0x00,
+  0x00,
+  0x00,
+  0x40,
+  0x01,
+  0x00,
+};
+
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_CDC_Private_Variables
+  * @{
+  */ 
+
+
+/* CDC interface class callbacks structure */
+USBD_ClassTypeDef  USBD_CDC = 
+{
+  USBD_CDC_Init,
+  USBD_CDC_DeInit,
+  USBD_CDC_Setup,
+  NULL,                 /* EP0_TxSent, */
+  USBD_CDC_EP0_RxReady,
+  USBD_CDC_DataIn,
+  USBD_CDC_DataOut,
+  NULL,
+  NULL,
+  NULL,     
+  USBD_CDC_GetHSCfgDesc,  
+  USBD_CDC_GetFSCfgDesc,    
+  USBD_CDC_GetOtherSpeedCfgDesc, 
+  USBD_CDC_GetDeviceQualifierDescriptor,
+};
+
+/* USB CDC device Configuration Descriptor */
+__ALIGN_BEGIN uint8_t USBD_CDC_CfgHSDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
+{
+  /*Configuration Descriptor*/
+  0x09,   /* bLength: Configuration Descriptor size */
+  USB_DESC_TYPE_CONFIGURATION,      /* bDescriptorType: Configuration */
+  USB_CDC_CONFIG_DESC_SIZ,                /* wTotalLength:no of returned bytes */
+  0x00,
+  0x02,   /* bNumInterfaces: 2 interface */
+  0x01,   /* bConfigurationValue: Configuration value */
+  0x00,   /* iConfiguration: Index of string descriptor describing the configuration */
+  0xC0,   /* bmAttributes: self powered */
+  0x32,   /* MaxPower 0 mA */
+  
+  /*---------------------------------------------------------------------------*/
+  
+  /*Interface Descriptor */
+  0x09,   /* bLength: Interface Descriptor size */
+  USB_DESC_TYPE_INTERFACE,  /* bDescriptorType: Interface */
+  /* Interface descriptor type */
+  0x00,   /* bInterfaceNumber: Number of Interface */
+  0x00,   /* bAlternateSetting: Alternate setting */
+  0x01,   /* bNumEndpoints: One endpoints used */
+  0x02,   /* bInterfaceClass: Communication Interface Class */
+  0x02,   /* bInterfaceSubClass: Abstract Control Model */
+  0x01,   /* bInterfaceProtocol: Common AT commands */
+  0x00,   /* iInterface: */
+  
+  /*Header Functional Descriptor*/
+  0x05,   /* bLength: Endpoint Descriptor size */
+  0x24,   /* bDescriptorType: CS_INTERFACE */
+  0x00,   /* bDescriptorSubtype: Header Func Desc */
+  0x10,   /* bcdCDC: spec release number */
+  0x01,
+  
+  /*Call Management Functional Descriptor*/
+  0x05,   /* bFunctionLength */
+  0x24,   /* bDescriptorType: CS_INTERFACE */
+  0x01,   /* bDescriptorSubtype: Call Management Func Desc */
+  0x00,   /* bmCapabilities: D0+D1 */
+  0x01,   /* bDataInterface: 1 */
+  
+  /*ACM Functional Descriptor*/
+  0x04,   /* bFunctionLength */
+  0x24,   /* bDescriptorType: CS_INTERFACE */
+  0x02,   /* bDescriptorSubtype: Abstract Control Management desc */
+  0x02,   /* bmCapabilities */
+  
+  /*Union Functional Descriptor*/
+  0x05,   /* bFunctionLength */
+  0x24,   /* bDescriptorType: CS_INTERFACE */
+  0x06,   /* bDescriptorSubtype: Union func desc */
+  0x00,   /* bMasterInterface: Communication class interface */
+  0x01,   /* bSlaveInterface0: Data Class Interface */
+  
+  /*Endpoint 2 Descriptor*/
+  0x07,                           /* bLength: Endpoint Descriptor size */
+  USB_DESC_TYPE_ENDPOINT,   /* bDescriptorType: Endpoint */
+  CDC_CMD_EP,                     /* bEndpointAddress */
+  0x03,                           /* bmAttributes: Interrupt */
+  LOBYTE(CDC_CMD_PACKET_SIZE),     /* wMaxPacketSize: */
+  HIBYTE(CDC_CMD_PACKET_SIZE),
+  0x10,                           /* bInterval: */ 
+  /*---------------------------------------------------------------------------*/
+  
+  /*Data class interface descriptor*/
+  0x09,   /* bLength: Endpoint Descriptor size */
+  USB_DESC_TYPE_INTERFACE,  /* bDescriptorType: */
+  0x01,   /* bInterfaceNumber: Number of Interface */
+  0x00,   /* bAlternateSetting: Alternate setting */
+  0x02,   /* bNumEndpoints: Two endpoints used */
+  0x0A,   /* bInterfaceClass: CDC */
+  0x00,   /* bInterfaceSubClass: */
+  0x00,   /* bInterfaceProtocol: */
+  0x00,   /* iInterface: */
+  
+  /*Endpoint OUT Descriptor*/
+  0x07,   /* bLength: Endpoint Descriptor size */
+  USB_DESC_TYPE_ENDPOINT,      /* bDescriptorType: Endpoint */
+  CDC_OUT_EP,                        /* bEndpointAddress */
+  0x02,                              /* bmAttributes: Bulk */
+  LOBYTE(CDC_DATA_HS_MAX_PACKET_SIZE),  /* wMaxPacketSize: */
+  HIBYTE(CDC_DATA_HS_MAX_PACKET_SIZE),
+  0x00,                              /* bInterval: ignore for Bulk transfer */
+  
+  /*Endpoint IN Descriptor*/
+  0x07,   /* bLength: Endpoint Descriptor size */
+  USB_DESC_TYPE_ENDPOINT,      /* bDescriptorType: Endpoint */
+  CDC_IN_EP,                         /* bEndpointAddress */
+  0x02,                              /* bmAttributes: Bulk */
+  LOBYTE(CDC_DATA_HS_MAX_PACKET_SIZE),  /* wMaxPacketSize: */
+  HIBYTE(CDC_DATA_HS_MAX_PACKET_SIZE),
+  0x00                               /* bInterval: ignore for Bulk transfer */
+} ;
+
+
+/* USB CDC device Configuration Descriptor */
+__ALIGN_BEGIN uint8_t USBD_CDC_CfgFSDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
+{
+  /*Configuration Descriptor*/
+  0x09,   /* bLength: Configuration Descriptor size */
+  USB_DESC_TYPE_CONFIGURATION,      /* bDescriptorType: Configuration */
+  USB_CDC_CONFIG_DESC_SIZ,                /* wTotalLength:no of returned bytes */
+  0x00,
+  0x02,   /* bNumInterfaces: 2 interface */
+  0x01,   /* bConfigurationValue: Configuration value */
+  0x00,   /* iConfiguration: Index of string descriptor describing the configuration */
+  0xC0,   /* bmAttributes: self powered */
+  0x32,   /* MaxPower 0 mA */
+  
+  /*---------------------------------------------------------------------------*/
+  
+  /*Interface Descriptor */
+  0x09,   /* bLength: Interface Descriptor size */
+  USB_DESC_TYPE_INTERFACE,  /* bDescriptorType: Interface */
+  /* Interface descriptor type */
+  0x00,   /* bInterfaceNumber: Number of Interface */
+  0x00,   /* bAlternateSetting: Alternate setting */
+  0x01,   /* bNumEndpoints: One endpoints used */
+  0x02,   /* bInterfaceClass: Communication Interface Class */
+  0x02,   /* bInterfaceSubClass: Abstract Control Model */
+  0x01,   /* bInterfaceProtocol: Common AT commands */
+  0x00,   /* iInterface: */
+  
+  /*Header Functional Descriptor*/
+  0x05,   /* bLength: Endpoint Descriptor size */
+  0x24,   /* bDescriptorType: CS_INTERFACE */
+  0x00,   /* bDescriptorSubtype: Header Func Desc */
+  0x10,   /* bcdCDC: spec release number */
+  0x01,
+  
+  /*Call Management Functional Descriptor*/
+  0x05,   /* bFunctionLength */
+  0x24,   /* bDescriptorType: CS_INTERFACE */
+  0x01,   /* bDescriptorSubtype: Call Management Func Desc */
+  0x00,   /* bmCapabilities: D0+D1 */
+  0x01,   /* bDataInterface: 1 */
+  
+  /*ACM Functional Descriptor*/
+  0x04,   /* bFunctionLength */
+  0x24,   /* bDescriptorType: CS_INTERFACE */
+  0x02,   /* bDescriptorSubtype: Abstract Control Management desc */
+  0x02,   /* bmCapabilities */
+  
+  /*Union Functional Descriptor*/
+  0x05,   /* bFunctionLength */
+  0x24,   /* bDescriptorType: CS_INTERFACE */
+  0x06,   /* bDescriptorSubtype: Union func desc */
+  0x00,   /* bMasterInterface: Communication class interface */
+  0x01,   /* bSlaveInterface0: Data Class Interface */
+  
+  /*Endpoint 2 Descriptor*/
+  0x07,                           /* bLength: Endpoint Descriptor size */
+  USB_DESC_TYPE_ENDPOINT,   /* bDescriptorType: Endpoint */
+  CDC_CMD_EP,                     /* bEndpointAddress */
+  0x03,                           /* bmAttributes: Interrupt */
+  LOBYTE(CDC_CMD_PACKET_SIZE),     /* wMaxPacketSize: */
+  HIBYTE(CDC_CMD_PACKET_SIZE),
+  0x10,                           /* bInterval: */ 
+  /*---------------------------------------------------------------------------*/
+  
+  /*Data class interface descriptor*/
+  0x09,   /* bLength: Endpoint Descriptor size */
+  USB_DESC_TYPE_INTERFACE,  /* bDescriptorType: */
+  0x01,   /* bInterfaceNumber: Number of Interface */
+  0x00,   /* bAlternateSetting: Alternate setting */
+  0x02,   /* bNumEndpoints: Two endpoints used */
+  0x0A,   /* bInterfaceClass: CDC */
+  0x00,   /* bInterfaceSubClass: */
+  0x00,   /* bInterfaceProtocol: */
+  0x00,   /* iInterface: */
+  
+  /*Endpoint OUT Descriptor*/
+  0x07,   /* bLength: Endpoint Descriptor size */
+  USB_DESC_TYPE_ENDPOINT,      /* bDescriptorType: Endpoint */
+  CDC_OUT_EP,                        /* bEndpointAddress */
+  0x02,                              /* bmAttributes: Bulk */
+  LOBYTE(CDC_DATA_FS_MAX_PACKET_SIZE),  /* wMaxPacketSize: */
+  HIBYTE(CDC_DATA_FS_MAX_PACKET_SIZE),
+  0x00,                              /* bInterval: ignore for Bulk transfer */
+  
+  /*Endpoint IN Descriptor*/
+  0x07,   /* bLength: Endpoint Descriptor size */
+  USB_DESC_TYPE_ENDPOINT,      /* bDescriptorType: Endpoint */
+  CDC_IN_EP,                         /* bEndpointAddress */
+  0x02,                              /* bmAttributes: Bulk */
+  LOBYTE(CDC_DATA_FS_MAX_PACKET_SIZE),  /* wMaxPacketSize: */
+  HIBYTE(CDC_DATA_FS_MAX_PACKET_SIZE),
+  0x00                               /* bInterval: ignore for Bulk transfer */
+} ;
+
+__ALIGN_BEGIN uint8_t USBD_CDC_OtherSpeedCfgDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
+{ 
+  0x09,   /* bLength: Configuation Descriptor size */
+  USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION,   
+  USB_CDC_CONFIG_DESC_SIZ,
+  0x00,
+  0x02,   /* bNumInterfaces: 2 interfaces */
+  0x01,   /* bConfigurationValue: */
+  0x04,   /* iConfiguration: */
+  0xC0,   /* bmAttributes: */
+  0x32,   /* MaxPower 100 mA */  
+  
+  /*Interface Descriptor */
+  0x09,   /* bLength: Interface Descriptor size */
+  USB_DESC_TYPE_INTERFACE,  /* bDescriptorType: Interface */
+  /* Interface descriptor type */
+  0x00,   /* bInterfaceNumber: Number of Interface */
+  0x00,   /* bAlternateSetting: Alternate setting */
+  0x01,   /* bNumEndpoints: One endpoints used */
+  0x02,   /* bInterfaceClass: Communication Interface Class */
+  0x02,   /* bInterfaceSubClass: Abstract Control Model */
+  0x01,   /* bInterfaceProtocol: Common AT commands */
+  0x00,   /* iInterface: */
+  
+  /*Header Functional Descriptor*/
+  0x05,   /* bLength: Endpoint Descriptor size */
+  0x24,   /* bDescriptorType: CS_INTERFACE */
+  0x00,   /* bDescriptorSubtype: Header Func Desc */
+  0x10,   /* bcdCDC: spec release number */
+  0x01,
+  
+  /*Call Management Functional Descriptor*/
+  0x05,   /* bFunctionLength */
+  0x24,   /* bDescriptorType: CS_INTERFACE */
+  0x01,   /* bDescriptorSubtype: Call Management Func Desc */
+  0x00,   /* bmCapabilities: D0+D1 */
+  0x01,   /* bDataInterface: 1 */
+  
+  /*ACM Functional Descriptor*/
+  0x04,   /* bFunctionLength */
+  0x24,   /* bDescriptorType: CS_INTERFACE */
+  0x02,   /* bDescriptorSubtype: Abstract Control Management desc */
+  0x02,   /* bmCapabilities */
+  
+  /*Union Functional Descriptor*/
+  0x05,   /* bFunctionLength */
+  0x24,   /* bDescriptorType: CS_INTERFACE */
+  0x06,   /* bDescriptorSubtype: Union func desc */
+  0x00,   /* bMasterInterface: Communication class interface */
+  0x01,   /* bSlaveInterface0: Data Class Interface */
+  
+  /*Endpoint 2 Descriptor*/
+  0x07,                           /* bLength: Endpoint Descriptor size */
+  USB_DESC_TYPE_ENDPOINT      ,   /* bDescriptorType: Endpoint */
+  CDC_CMD_EP,                     /* bEndpointAddress */
+  0x03,                           /* bmAttributes: Interrupt */
+  LOBYTE(CDC_CMD_PACKET_SIZE),     /* wMaxPacketSize: */
+  HIBYTE(CDC_CMD_PACKET_SIZE),
+  0xFF,                           /* bInterval: */
+  
+  /*---------------------------------------------------------------------------*/
+  
+  /*Data class interface descriptor*/
+  0x09,   /* bLength: Endpoint Descriptor size */
+  USB_DESC_TYPE_INTERFACE,  /* bDescriptorType: */
+  0x01,   /* bInterfaceNumber: Number of Interface */
+  0x00,   /* bAlternateSetting: Alternate setting */
+  0x02,   /* bNumEndpoints: Two endpoints used */
+  0x0A,   /* bInterfaceClass: CDC */
+  0x00,   /* bInterfaceSubClass: */
+  0x00,   /* bInterfaceProtocol: */
+  0x00,   /* iInterface: */
+  
+  /*Endpoint OUT Descriptor*/
+  0x07,   /* bLength: Endpoint Descriptor size */
+  USB_DESC_TYPE_ENDPOINT,      /* bDescriptorType: Endpoint */
+  CDC_OUT_EP,                        /* bEndpointAddress */
+  0x02,                              /* bmAttributes: Bulk */
+  0x40,                              /* wMaxPacketSize: */
+  0x00,
+  0x00,                              /* bInterval: ignore for Bulk transfer */
+  
+  /*Endpoint IN Descriptor*/
+  0x07,   /* bLength: Endpoint Descriptor size */
+  USB_DESC_TYPE_ENDPOINT,     /* bDescriptorType: Endpoint */
+  CDC_IN_EP,                        /* bEndpointAddress */
+  0x02,                             /* bmAttributes: Bulk */
+  0x40,                             /* wMaxPacketSize: */
+  0x00,
+  0x00                              /* bInterval */
+};
+
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_CDC_Private_Functions
+  * @{
+  */ 
+
+/**
+  * @brief  USBD_CDC_Init
+  *         Initialize the CDC interface
+  * @param  pdev: device instance
+  * @param  cfgidx: Configuration index
+  * @retval status
+  */
+static uint8_t  USBD_CDC_Init (USBD_HandleTypeDef *pdev, 
+                               uint8_t cfgidx)
+{
+  uint8_t ret = 0;
+  USBD_CDC_HandleTypeDef   *hcdc;
+  
+  if(pdev->dev_speed == USBD_SPEED_HIGH  ) 
+  {  
+    /* Open EP IN */
+    USBD_LL_OpenEP(pdev,
+                   CDC_IN_EP,
+                   USBD_EP_TYPE_BULK,
+                   CDC_DATA_HS_IN_PACKET_SIZE);
+    
+    /* Open EP OUT */
+    USBD_LL_OpenEP(pdev,
+                   CDC_OUT_EP,
+                   USBD_EP_TYPE_BULK,
+                   CDC_DATA_HS_OUT_PACKET_SIZE);
+    
+  }
+  else
+  {
+    /* Open EP IN */
+    USBD_LL_OpenEP(pdev,
+                   CDC_IN_EP,
+                   USBD_EP_TYPE_BULK,
+                   CDC_DATA_FS_IN_PACKET_SIZE);
+    
+    /* Open EP OUT */
+    USBD_LL_OpenEP(pdev,
+                   CDC_OUT_EP,
+                   USBD_EP_TYPE_BULK,
+                   CDC_DATA_FS_OUT_PACKET_SIZE);
+  }
+  /* Open Command IN EP */
+  USBD_LL_OpenEP(pdev,
+                 CDC_CMD_EP,
+                 USBD_EP_TYPE_INTR,
+                 CDC_CMD_PACKET_SIZE);
+  
+    
+  pdev->pClassData = USBD_malloc(sizeof (USBD_CDC_HandleTypeDef));
+  
+  if(pdev->pClassData == NULL)
+  {
+    ret = 1; 
+  }
+  else
+  {
+    hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+    
+    /* Init  physical Interface components */
+    ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Init();
+    
+    /* Init Xfer states */
+    hcdc->TxState =0;
+    hcdc->RxState =0;
+       
+    if(pdev->dev_speed == USBD_SPEED_HIGH  ) 
+    {      
+      /* Prepare Out endpoint to receive next packet */
+      USBD_LL_PrepareReceive(pdev,
+                             CDC_OUT_EP,
+                             hcdc->RxBuffer,
+                             CDC_DATA_HS_OUT_PACKET_SIZE);
+    }
+    else
+    {
+      /* Prepare Out endpoint to receive next packet */
+      USBD_LL_PrepareReceive(pdev,
+                             CDC_OUT_EP,
+                             hcdc->RxBuffer,
+                             CDC_DATA_FS_OUT_PACKET_SIZE);
+    }
+    
+    
+  }
+  return ret;
+}
+
+/**
+  * @brief  USBD_CDC_Init
+  *         DeInitialize the CDC layer
+  * @param  pdev: device instance
+  * @param  cfgidx: Configuration index
+  * @retval status
+  */
+static uint8_t  USBD_CDC_DeInit (USBD_HandleTypeDef *pdev, 
+                                 uint8_t cfgidx)
+{
+  uint8_t ret = 0;
+  
+  /* Open EP IN */
+  USBD_LL_CloseEP(pdev,
+              CDC_IN_EP);
+  
+  /* Open EP OUT */
+  USBD_LL_CloseEP(pdev,
+              CDC_OUT_EP);
+  
+  /* Open Command IN EP */
+  USBD_LL_CloseEP(pdev,
+              CDC_CMD_EP);
+  
+  
+  /* DeInit  physical Interface components */
+  if(pdev->pClassData != NULL)
+  {
+    ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->DeInit();
+    USBD_free(pdev->pClassData);
+    pdev->pClassData = NULL;
+  }
+  
+  return ret;
+}
+
+/**
+  * @brief  USBD_CDC_Setup
+  *         Handle the CDC specific requests
+  * @param  pdev: instance
+  * @param  req: usb requests
+  * @retval status
+  */
+static uint8_t  USBD_CDC_Setup (USBD_HandleTypeDef *pdev, 
+                                USBD_SetupReqTypedef *req)
+{
+  USBD_CDC_HandleTypeDef   *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+  static uint8_t ifalt = 0;
+    
+  switch (req->bmRequest & USB_REQ_TYPE_MASK)
+  {
+  case USB_REQ_TYPE_CLASS :
+    if (req->wLength)
+    {
+      if (req->bmRequest & 0x80)
+      {
+        ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Control(req->bRequest,
+                                                          (uint8_t *)hcdc->data,
+                                                          req->wLength);
+          USBD_CtlSendData (pdev, 
+                            (uint8_t *)hcdc->data,
+                            req->wLength);
+      }
+      else
+      {
+        hcdc->CmdOpCode = req->bRequest;
+        hcdc->CmdLength = req->wLength;
+        
+        USBD_CtlPrepareRx (pdev, 
+                           (uint8_t *)hcdc->data,
+                           req->wLength);
+      }
+      
+    }
+    else
+    {
+      ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Control(req->bRequest,
+                                                        (uint8_t*)req,
+                                                        0);
+    }
+    break;
+
+  case USB_REQ_TYPE_STANDARD:
+    switch (req->bRequest)
+    {      
+    case USB_REQ_GET_INTERFACE :
+      USBD_CtlSendData (pdev,
+                        &ifalt,
+                        1);
+      break;
+      
+    case USB_REQ_SET_INTERFACE :
+      break;
+    }
+ 
+  default: 
+    break;
+  }
+  return USBD_OK;
+}
+
+/**
+  * @brief  USBD_CDC_DataIn
+  *         Data sent on non-control IN endpoint
+  * @param  pdev: device instance
+  * @param  epnum: endpoint number
+  * @retval status
+  */
+static uint8_t  USBD_CDC_DataIn (USBD_HandleTypeDef *pdev, uint8_t epnum)
+{
+  USBD_CDC_HandleTypeDef   *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+  
+  if(pdev->pClassData != NULL)
+  {
+    
+    hcdc->TxState = 0;
+
+    return USBD_OK;
+  }
+  else
+  {
+    return USBD_FAIL;
+  }
+}
+
+/**
+  * @brief  USBD_CDC_DataOut
+  *         Data received on non-control Out endpoint
+  * @param  pdev: device instance
+  * @param  epnum: endpoint number
+  * @retval status
+  */
+static uint8_t  USBD_CDC_DataOut (USBD_HandleTypeDef *pdev, uint8_t epnum)
+{      
+  USBD_CDC_HandleTypeDef   *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+  
+  /* Get the received data length */
+  hcdc->RxLength = USBD_LL_GetRxDataSize (pdev, epnum);
+  
+  /* USB data will be immediately processed, this allow next USB traffic being 
+  NAKed till the end of the application Xfer */
+  if(pdev->pClassData != NULL)
+  {
+    ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Receive(hcdc->RxBuffer, &hcdc->RxLength);
+
+    return USBD_OK;
+  }
+  else
+  {
+    return USBD_FAIL;
+  }
+}
+
+
+
+/**
+  * @brief  USBD_CDC_DataOut
+  *         Data received on non-control Out endpoint
+  * @param  pdev: device instance
+  * @param  epnum: endpoint number
+  * @retval status
+  */
+static uint8_t  USBD_CDC_EP0_RxReady (USBD_HandleTypeDef *pdev)
+{ 
+  USBD_CDC_HandleTypeDef   *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+  
+  if((pdev->pUserData != NULL) && (hcdc->CmdOpCode != 0xFF))
+  {
+    ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Control(hcdc->CmdOpCode,
+                                                      (uint8_t *)hcdc->data,
+                                                      hcdc->CmdLength);
+      hcdc->CmdOpCode = 0xFF; 
+      
+  }
+  return USBD_OK;
+}
+
+/**
+  * @brief  USBD_CDC_GetFSCfgDesc 
+  *         Return configuration descriptor
+  * @param  speed : current device speed
+  * @param  length : pointer data length
+  * @retval pointer to descriptor buffer
+  */
+static uint8_t  *USBD_CDC_GetFSCfgDesc (uint16_t *length)
+{
+  *length = sizeof (USBD_CDC_CfgFSDesc);
+  return USBD_CDC_CfgFSDesc;
+}
+
+/**
+  * @brief  USBD_CDC_GetHSCfgDesc 
+  *         Return configuration descriptor
+  * @param  speed : current device speed
+  * @param  length : pointer data length
+  * @retval pointer to descriptor buffer
+  */
+static uint8_t  *USBD_CDC_GetHSCfgDesc (uint16_t *length)
+{
+  *length = sizeof (USBD_CDC_CfgHSDesc);
+  return USBD_CDC_CfgHSDesc;
+}
+
+/**
+  * @brief  USBD_CDC_GetCfgDesc 
+  *         Return configuration descriptor
+  * @param  speed : current device speed
+  * @param  length : pointer data length
+  * @retval pointer to descriptor buffer
+  */
+static uint8_t  *USBD_CDC_GetOtherSpeedCfgDesc (uint16_t *length)
+{
+  *length = sizeof (USBD_CDC_OtherSpeedCfgDesc);
+  return USBD_CDC_OtherSpeedCfgDesc;
+}
+
+/**
+* @brief  DeviceQualifierDescriptor 
+*         return Device Qualifier descriptor
+* @param  length : pointer data length
+* @retval pointer to descriptor buffer
+*/
+uint8_t  *USBD_CDC_GetDeviceQualifierDescriptor (uint16_t *length)
+{
+  *length = sizeof (USBD_CDC_DeviceQualifierDesc);
+  return USBD_CDC_DeviceQualifierDesc;
+}
+
+/**
+* @brief  USBD_CDC_RegisterInterface
+  * @param  pdev: device instance
+  * @param  fops: CD  Interface callback
+  * @retval status
+  */
+uint8_t  USBD_CDC_RegisterInterface  (USBD_HandleTypeDef   *pdev, 
+                                      USBD_CDC_ItfTypeDef *fops)
+{
+  uint8_t  ret = USBD_FAIL;
+  
+  if(fops != NULL)
+  {
+    pdev->pUserData= fops;
+    ret = USBD_OK;    
+  }
+  
+  return ret;
+}
+
+/**
+  * @brief  USBD_CDC_SetTxBuffer
+  * @param  pdev: device instance
+  * @param  pbuff: Tx Buffer
+  * @retval status
+  */
+uint8_t  USBD_CDC_SetTxBuffer  (USBD_HandleTypeDef   *pdev,
+                                uint8_t  *pbuff,
+                                uint16_t length)
+{
+  USBD_CDC_HandleTypeDef   *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+  
+  hcdc->TxBuffer = pbuff;
+  hcdc->TxLength = length;  
+  
+  return USBD_OK;  
+}
+
+
+/**
+  * @brief  USBD_CDC_SetRxBuffer
+  * @param  pdev: device instance
+  * @param  pbuff: Rx Buffer
+  * @retval status
+  */
+uint8_t  USBD_CDC_SetRxBuffer  (USBD_HandleTypeDef   *pdev,
+                                   uint8_t  *pbuff)
+{
+  USBD_CDC_HandleTypeDef   *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+  
+  hcdc->RxBuffer = pbuff;
+  
+  return USBD_OK;
+}
+
+/**
+  * @brief  USBD_CDC_DataOut
+  *         Data received on non-control Out endpoint
+  * @param  pdev: device instance
+  * @param  epnum: endpoint number
+  * @retval status
+  */
+uint8_t  USBD_CDC_TransmitPacket(USBD_HandleTypeDef *pdev)
+{      
+  USBD_CDC_HandleTypeDef   *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+  
+  if(pdev->pClassData != NULL)
+  {
+    if(hcdc->TxState == 0)
+    {
+      /* Tx Transfer in progress */
+      hcdc->TxState = 1;
+      
+      /* Transmit next packet */
+      USBD_LL_Transmit(pdev,
+                       CDC_IN_EP,
+                       hcdc->TxBuffer,
+                       hcdc->TxLength);
+      
+      return USBD_OK;
+    }
+    else
+    {
+      return USBD_BUSY;
+    }
+  }
+  else
+  {
+    return USBD_FAIL;
+  }
+}
+
+
+/**
+  * @brief  USBD_CDC_ReceivePacket
+  *         prepare OUT Endpoint for reception
+  * @param  pdev: device instance
+  * @retval status
+  */
+uint8_t  USBD_CDC_ReceivePacket(USBD_HandleTypeDef *pdev)
+{      
+  USBD_CDC_HandleTypeDef   *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+  
+  /* Suspend or Resume USB Out process */
+  if(pdev->pClassData != NULL)
+  {
+    if(pdev->dev_speed == USBD_SPEED_HIGH  ) 
+    {      
+      /* Prepare Out endpoint to receive next packet */
+      USBD_LL_PrepareReceive(pdev,
+                             CDC_OUT_EP,
+                             hcdc->RxBuffer,
+                             CDC_DATA_HS_OUT_PACKET_SIZE);
+    }
+    else
+    {
+      /* Prepare Out endpoint to receive next packet */
+      USBD_LL_PrepareReceive(pdev,
+                             CDC_OUT_EP,
+                             hcdc->RxBuffer,
+                             CDC_DATA_FS_OUT_PACKET_SIZE);
+    }
+    return USBD_OK;
+  }
+  else
+  {
+    return USBD_FAIL;
+  }
+}
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_core.h b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_core.h
new file mode 100644
index 0000000..013a5c1
--- /dev/null
+++ b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_core.h
@@ -0,0 +1,167 @@
+/**
+  ******************************************************************************
+  * @file    usbd_core.h
+  * @author  MCD Application Team
+  * @version V2.4.2
+  * @date    11-December-2015
+  * @brief   Header file for usbd_core.c file
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_CORE_H
+#define __USBD_CORE_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_conf.h"
+#include "usbd_def.h"
+#include "usbd_ioreq.h"
+#include "usbd_ctlreq.h"
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+  * @{
+  */
+  
+/** @defgroup USBD_CORE
+  * @brief This file is the Header file for usbd_core.c file
+  * @{
+  */ 
+
+
+/** @defgroup USBD_CORE_Exported_Defines
+  * @{
+  */ 
+
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_CORE_Exported_TypesDefinitions
+  * @{
+  */
+ 
+
+/**
+  * @}
+  */ 
+
+
+
+/** @defgroup USBD_CORE_Exported_Macros
+  * @{
+  */ 
+
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_CORE_Exported_Variables
+  * @{
+  */ 
+#define USBD_SOF          USBD_LL_SOF
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_CORE_Exported_FunctionsPrototype
+  * @{
+  */ 
+USBD_StatusTypeDef USBD_Init(USBD_HandleTypeDef *pdev, USBD_DescriptorsTypeDef *pdesc, uint8_t id);
+USBD_StatusTypeDef USBD_DeInit(USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_Start  (USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_Stop   (USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_RegisterClass(USBD_HandleTypeDef *pdev, USBD_ClassTypeDef *pclass);
+
+USBD_StatusTypeDef USBD_RunTestMode (USBD_HandleTypeDef  *pdev); 
+USBD_StatusTypeDef USBD_SetClassConfig(USBD_HandleTypeDef  *pdev, uint8_t cfgidx);
+USBD_StatusTypeDef USBD_ClrClassConfig(USBD_HandleTypeDef  *pdev, uint8_t cfgidx);
+
+USBD_StatusTypeDef USBD_LL_SetupStage(USBD_HandleTypeDef *pdev, uint8_t *psetup);
+USBD_StatusTypeDef USBD_LL_DataOutStage(USBD_HandleTypeDef *pdev , uint8_t epnum, uint8_t *pdata);
+USBD_StatusTypeDef USBD_LL_DataInStage(USBD_HandleTypeDef *pdev , uint8_t epnum, uint8_t *pdata);
+
+USBD_StatusTypeDef USBD_LL_Reset(USBD_HandleTypeDef  *pdev);
+USBD_StatusTypeDef USBD_LL_SetSpeed(USBD_HandleTypeDef  *pdev, USBD_SpeedTypeDef speed);
+USBD_StatusTypeDef USBD_LL_Suspend(USBD_HandleTypeDef  *pdev);
+USBD_StatusTypeDef USBD_LL_Resume(USBD_HandleTypeDef  *pdev);
+
+USBD_StatusTypeDef USBD_LL_SOF(USBD_HandleTypeDef  *pdev);
+USBD_StatusTypeDef USBD_LL_IsoINIncomplete(USBD_HandleTypeDef  *pdev, uint8_t epnum);
+USBD_StatusTypeDef USBD_LL_IsoOUTIncomplete(USBD_HandleTypeDef  *pdev, uint8_t epnum);
+
+USBD_StatusTypeDef USBD_LL_DevConnected(USBD_HandleTypeDef  *pdev);
+USBD_StatusTypeDef USBD_LL_DevDisconnected(USBD_HandleTypeDef  *pdev);
+
+/* USBD Low Level Driver */
+USBD_StatusTypeDef  USBD_LL_Init (USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef  USBD_LL_DeInit (USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef  USBD_LL_Start(USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef  USBD_LL_Stop (USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef  USBD_LL_OpenEP  (USBD_HandleTypeDef *pdev, 
+                                      uint8_t  ep_addr,                                      
+                                      uint8_t  ep_type,
+                                      uint16_t ep_mps);
+
+USBD_StatusTypeDef  USBD_LL_CloseEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr);   
+USBD_StatusTypeDef  USBD_LL_FlushEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr);   
+USBD_StatusTypeDef  USBD_LL_StallEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr);   
+USBD_StatusTypeDef  USBD_LL_ClearStallEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr);   
+uint8_t             USBD_LL_IsStallEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr);   
+USBD_StatusTypeDef  USBD_LL_SetUSBAddress (USBD_HandleTypeDef *pdev, uint8_t dev_addr);   
+USBD_StatusTypeDef  USBD_LL_Transmit (USBD_HandleTypeDef *pdev, 
+                                      uint8_t  ep_addr,                                      
+                                      uint8_t  *pbuf,
+                                      uint16_t  size);
+
+USBD_StatusTypeDef  USBD_LL_PrepareReceive(USBD_HandleTypeDef *pdev, 
+                                           uint8_t  ep_addr,                                      
+                                           uint8_t  *pbuf,
+                                           uint16_t  size);
+
+uint32_t USBD_LL_GetRxDataSize  (USBD_HandleTypeDef *pdev, uint8_t  ep_addr);  
+void  USBD_LL_Delay (uint32_t Delay);
+
+/**
+  * @}
+  */ 
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_CORE_H */
+
+/**
+  * @}
+  */ 
+
+/**
+* @}
+*/ 
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
+
+
diff --git a/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_ctlreq.h b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_ctlreq.h
new file mode 100644
index 0000000..bf88252
--- /dev/null
+++ b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_ctlreq.h
@@ -0,0 +1,113 @@
+/**
+  ******************************************************************************
+  * @file    usbd_req.h
+  * @author  MCD Application Team
+  * @version V2.4.2
+  * @date    11-December-2015
+  * @brief   Header file for the usbd_req.c file
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USB_REQUEST_H
+#define __USB_REQUEST_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include  "usbd_def.h"
+
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+  * @{
+  */
+  
+/** @defgroup USBD_REQ
+  * @brief header file for the usbd_req.c file
+  * @{
+  */ 
+
+/** @defgroup USBD_REQ_Exported_Defines
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_REQ_Exported_Types
+  * @{
+  */
+/**
+  * @}
+  */ 
+
+
+
+/** @defgroup USBD_REQ_Exported_Macros
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_REQ_Exported_Variables
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_REQ_Exported_FunctionsPrototype
+  * @{
+  */ 
+
+USBD_StatusTypeDef  USBD_StdDevReq (USBD_HandleTypeDef  *pdev, USBD_SetupReqTypedef  *req);
+USBD_StatusTypeDef  USBD_StdItfReq (USBD_HandleTypeDef  *pdev, USBD_SetupReqTypedef  *req);
+USBD_StatusTypeDef  USBD_StdEPReq  (USBD_HandleTypeDef  *pdev, USBD_SetupReqTypedef  *req);
+
+
+void USBD_CtlError  (USBD_HandleTypeDef  *pdev, USBD_SetupReqTypedef *req);
+
+void USBD_ParseSetupRequest (USBD_SetupReqTypedef *req, uint8_t *pdata);
+
+void USBD_GetString         (uint8_t *desc, uint8_t *unicode, uint16_t *len);
+/**
+  * @}
+  */ 
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USB_REQUEST_H */
+
+/**
+  * @}
+  */ 
+
+/**
+* @}
+*/ 
+
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_def.h b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_def.h
new file mode 100644
index 0000000..8fbe81e
--- /dev/null
+++ b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_def.h
@@ -0,0 +1,330 @@
+/**
+  ******************************************************************************
+  * @file    usbd_def.h
+  * @author  MCD Application Team
+  * @version V2.4.2
+  * @date    11-December-2015
+  * @brief   General defines for the usb device library 
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_DEF_H
+#define __USBD_DEF_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_conf.h"
+
+/** @addtogroup STM32_USBD_DEVICE_LIBRARY
+  * @{
+  */
+  
+/** @defgroup USB_DEF
+  * @brief general defines for the usb device library file
+  * @{
+  */ 
+
+/** @defgroup USB_DEF_Exported_Defines
+  * @{
+  */ 
+
+#ifndef NULL
+#define NULL  0
+#endif
+
+
+#define  USB_LEN_DEV_QUALIFIER_DESC                     0x0A
+#define  USB_LEN_DEV_DESC                               0x12
+#define  USB_LEN_CFG_DESC                               0x09
+#define  USB_LEN_IF_DESC                                0x09
+#define  USB_LEN_EP_DESC                                0x07
+#define  USB_LEN_OTG_DESC                               0x03
+#define  USB_LEN_LANGID_STR_DESC                        0x04
+#define  USB_LEN_OTHER_SPEED_DESC_SIZ                   0x09
+
+#define  USBD_IDX_LANGID_STR                            0x00 
+#define  USBD_IDX_MFC_STR                               0x01 
+#define  USBD_IDX_PRODUCT_STR                           0x02
+#define  USBD_IDX_SERIAL_STR                            0x03 
+#define  USBD_IDX_CONFIG_STR                            0x04 
+#define  USBD_IDX_INTERFACE_STR                         0x05 
+
+#define  USB_REQ_TYPE_STANDARD                          0x00
+#define  USB_REQ_TYPE_CLASS                             0x20
+#define  USB_REQ_TYPE_VENDOR                            0x40
+#define  USB_REQ_TYPE_MASK                              0x60
+
+#define  USB_REQ_RECIPIENT_DEVICE                       0x00
+#define  USB_REQ_RECIPIENT_INTERFACE                    0x01
+#define  USB_REQ_RECIPIENT_ENDPOINT                     0x02
+#define  USB_REQ_RECIPIENT_MASK                         0x03
+
+#define  USB_REQ_GET_STATUS                             0x00
+#define  USB_REQ_CLEAR_FEATURE                          0x01
+#define  USB_REQ_SET_FEATURE                            0x03
+#define  USB_REQ_SET_ADDRESS                            0x05
+#define  USB_REQ_GET_DESCRIPTOR                         0x06
+#define  USB_REQ_SET_DESCRIPTOR                         0x07
+#define  USB_REQ_GET_CONFIGURATION                      0x08
+#define  USB_REQ_SET_CONFIGURATION                      0x09
+#define  USB_REQ_GET_INTERFACE                          0x0A
+#define  USB_REQ_SET_INTERFACE                          0x0B
+#define  USB_REQ_SYNCH_FRAME                            0x0C
+
+#define  USB_DESC_TYPE_DEVICE                              1
+#define  USB_DESC_TYPE_CONFIGURATION                       2
+#define  USB_DESC_TYPE_STRING                              3
+#define  USB_DESC_TYPE_INTERFACE                           4
+#define  USB_DESC_TYPE_ENDPOINT                            5
+#define  USB_DESC_TYPE_DEVICE_QUALIFIER                    6
+#define  USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION           7
+#define  USB_DESC_TYPE_BOS                                 0x0F
+
+#define USB_CONFIG_REMOTE_WAKEUP                           2
+#define USB_CONFIG_SELF_POWERED                            1
+
+#define USB_FEATURE_EP_HALT                                0
+#define USB_FEATURE_REMOTE_WAKEUP                          1
+#define USB_FEATURE_TEST_MODE                              2
+
+#define USB_DEVICE_CAPABITY_TYPE                           0x10
+
+#define USB_HS_MAX_PACKET_SIZE                            512
+#define USB_FS_MAX_PACKET_SIZE                            64
+#define USB_MAX_EP0_SIZE                                  64
+
+/*  Device Status */
+#define USBD_STATE_DEFAULT                                1
+#define USBD_STATE_ADDRESSED                              2
+#define USBD_STATE_CONFIGURED                             3
+#define USBD_STATE_SUSPENDED                              4
+
+
+/*  EP0 State */    
+#define USBD_EP0_IDLE                                     0
+#define USBD_EP0_SETUP                                    1
+#define USBD_EP0_DATA_IN                                  2
+#define USBD_EP0_DATA_OUT                                 3
+#define USBD_EP0_STATUS_IN                                4
+#define USBD_EP0_STATUS_OUT                               5
+#define USBD_EP0_STALL                                    6    
+
+#define USBD_EP_TYPE_CTRL                                 0
+#define USBD_EP_TYPE_ISOC                                 1
+#define USBD_EP_TYPE_BULK                                 2
+#define USBD_EP_TYPE_INTR                                 3
+
+
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_DEF_Exported_TypesDefinitions
+  * @{
+  */
+
+typedef  struct  usb_setup_req 
+{
+    
+    uint8_t   bmRequest;                      
+    uint8_t   bRequest;                           
+    uint16_t  wValue;                             
+    uint16_t  wIndex;                             
+    uint16_t  wLength;                            
+}USBD_SetupReqTypedef;
+
+struct _USBD_HandleTypeDef;
+    
+typedef struct _Device_cb
+{
+  uint8_t  (*Init)             (struct _USBD_HandleTypeDef *pdev , uint8_t cfgidx);
+  uint8_t  (*DeInit)           (struct _USBD_HandleTypeDef *pdev , uint8_t cfgidx);
+ /* Control Endpoints*/
+  uint8_t  (*Setup)            (struct _USBD_HandleTypeDef *pdev , USBD_SetupReqTypedef  *req);  
+  uint8_t  (*EP0_TxSent)       (struct _USBD_HandleTypeDef *pdev );    
+  uint8_t  (*EP0_RxReady)      (struct _USBD_HandleTypeDef *pdev );  
+  /* Class Specific Endpoints*/
+  uint8_t  (*DataIn)           (struct _USBD_HandleTypeDef *pdev , uint8_t epnum);   
+  uint8_t  (*DataOut)          (struct _USBD_HandleTypeDef *pdev , uint8_t epnum); 
+  uint8_t  (*SOF)              (struct _USBD_HandleTypeDef *pdev); 
+  uint8_t  (*IsoINIncomplete)  (struct _USBD_HandleTypeDef *pdev , uint8_t epnum); 
+  uint8_t  (*IsoOUTIncomplete) (struct _USBD_HandleTypeDef *pdev , uint8_t epnum);   
+
+  uint8_t  *(*GetHSConfigDescriptor)(uint16_t *length); 
+  uint8_t  *(*GetFSConfigDescriptor)(uint16_t *length);   
+  uint8_t  *(*GetOtherSpeedConfigDescriptor)(uint16_t *length);
+  uint8_t  *(*GetDeviceQualifierDescriptor)(uint16_t *length);
+#if (USBD_SUPPORT_USER_STRING == 1)
+  uint8_t  *(*GetUsrStrDescriptor)(struct _USBD_HandleTypeDef *pdev ,uint8_t index,  uint16_t *length);   
+#endif  
+  
+} USBD_ClassTypeDef;
+
+/* Following USB Device Speed */
+typedef enum 
+{
+  USBD_SPEED_HIGH  = 0,
+  USBD_SPEED_FULL  = 1,
+  USBD_SPEED_LOW   = 2,  
+}USBD_SpeedTypeDef;
+
+/* Following USB Device status */
+typedef enum {
+  USBD_OK   = 0,
+  USBD_BUSY,
+  USBD_FAIL,
+}USBD_StatusTypeDef;
+
+/* USB Device descriptors structure */
+typedef struct
+{
+  uint8_t  *(*GetDeviceDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length);  
+  uint8_t  *(*GetLangIDStrDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length); 
+  uint8_t  *(*GetManufacturerStrDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length);  
+  uint8_t  *(*GetProductStrDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length);  
+  uint8_t  *(*GetSerialStrDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length);  
+  uint8_t  *(*GetConfigurationStrDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length);  
+  uint8_t  *(*GetInterfaceStrDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length); 
+#if (USBD_LPM_ENABLED == 1)
+  uint8_t  *(*GetBOSDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length); 
+#endif  
+} USBD_DescriptorsTypeDef;
+
+/* USB Device handle structure */
+typedef struct
+{ 
+  uint32_t                status;
+  uint32_t                total_length;    
+  uint32_t                rem_length; 
+  uint32_t                maxpacket;   
+} USBD_EndpointTypeDef;
+
+/* USB Device handle structure */
+typedef struct _USBD_HandleTypeDef
+{
+  uint8_t                 id;
+  uint32_t                dev_config;
+  uint32_t                dev_default_config;
+  uint32_t                dev_config_status; 
+  USBD_SpeedTypeDef       dev_speed; 
+  USBD_EndpointTypeDef    ep_in[15];
+  USBD_EndpointTypeDef    ep_out[15];  
+  uint32_t                ep0_state;  
+  uint32_t                ep0_data_len;     
+  uint8_t                 dev_state;
+  uint8_t                 dev_old_state;
+  uint8_t                 dev_address;
+  uint8_t                 dev_connection_status;  
+  uint8_t                 dev_test_mode;
+  uint32_t                dev_remote_wakeup;
+
+  USBD_SetupReqTypedef    request;
+  USBD_DescriptorsTypeDef *pDesc;
+  USBD_ClassTypeDef       *pClass;
+  void                    *pClassData;  
+  void                    *pUserData;    
+  void                    *pData;    
+} USBD_HandleTypeDef;
+
+/**
+  * @}
+  */ 
+
+
+
+/** @defgroup USBD_DEF_Exported_Macros
+  * @{
+  */ 
+#define  SWAPBYTE(addr)        (((uint16_t)(*((uint8_t *)(addr)))) + \
+                               (((uint16_t)(*(((uint8_t *)(addr)) + 1))) << 8))
+
+#define LOBYTE(x)  ((uint8_t)(x & 0x00FF))
+#define HIBYTE(x)  ((uint8_t)((x & 0xFF00) >>8))
+#define MIN(a, b)  (((a) < (b)) ? (a) : (b))
+#define MAX(a, b)  (((a) > (b)) ? (a) : (b))
+
+
+#if  defined ( __GNUC__ )
+  #ifndef __weak
+    #define __weak   __attribute__((weak))
+  #endif /* __weak */
+  #ifndef __packed
+    #define __packed __attribute__((__packed__))
+  #endif /* __packed */
+#endif /* __GNUC__ */
+
+
+/* In HS mode and when the DMA is used, all variables and data structures dealing
+   with the DMA during the transaction process should be 4-bytes aligned */    
+
+#if defined   (__GNUC__)        /* GNU Compiler */
+  #define __ALIGN_END    __attribute__ ((aligned (4)))
+  #define __ALIGN_BEGIN         
+#else                           
+  #define __ALIGN_END
+  #if defined   (__CC_ARM)      /* ARM Compiler */
+    #define __ALIGN_BEGIN    __align(4)  
+  #elif defined (__ICCARM__)    /* IAR Compiler */
+    #define __ALIGN_BEGIN 
+  #elif defined  (__TASKING__)  /* TASKING Compiler */
+    #define __ALIGN_BEGIN    __align(4) 
+  #endif /* __CC_ARM */  
+#endif /* __GNUC__ */ 
+  
+
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_DEF_Exported_Variables
+  * @{
+  */ 
+
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_DEF_Exported_FunctionsPrototype
+  * @{
+  */ 
+
+/**
+  * @}
+  */ 
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_DEF_H */
+
+/**
+  * @}
+  */ 
+
+/**
+* @}
+*/ 
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_ioreq.h b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_ioreq.h
new file mode 100644
index 0000000..b476307
--- /dev/null
+++ b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_ioreq.h
@@ -0,0 +1,128 @@
+/**
+  ******************************************************************************
+  * @file    usbd_ioreq.h
+  * @author  MCD Application Team
+  * @version V2.4.2
+  * @date    11-December-2015
+  * @brief   Header file for the usbd_ioreq.c file
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_IOREQ_H
+#define __USBD_IOREQ_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include  "usbd_def.h"
+#include  "usbd_core.h"
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+  * @{
+  */
+  
+/** @defgroup USBD_IOREQ
+  * @brief header file for the usbd_ioreq.c file
+  * @{
+  */ 
+
+/** @defgroup USBD_IOREQ_Exported_Defines
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_IOREQ_Exported_Types
+  * @{
+  */
+
+
+/**
+  * @}
+  */ 
+
+
+
+/** @defgroup USBD_IOREQ_Exported_Macros
+  * @{
+  */ 
+
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_IOREQ_Exported_Variables
+  * @{
+  */ 
+
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_IOREQ_Exported_FunctionsPrototype
+  * @{
+  */ 
+
+USBD_StatusTypeDef  USBD_CtlSendData (USBD_HandleTypeDef  *pdev, 
+                               uint8_t *buf,
+                               uint16_t len);
+
+USBD_StatusTypeDef  USBD_CtlContinueSendData (USBD_HandleTypeDef  *pdev, 
+                               uint8_t *pbuf,
+                               uint16_t len);
+
+USBD_StatusTypeDef USBD_CtlPrepareRx (USBD_HandleTypeDef  *pdev, 
+                               uint8_t *pbuf,                                 
+                               uint16_t len);
+
+USBD_StatusTypeDef  USBD_CtlContinueRx (USBD_HandleTypeDef  *pdev, 
+                              uint8_t *pbuf,                                          
+                              uint16_t len);
+
+USBD_StatusTypeDef  USBD_CtlSendStatus (USBD_HandleTypeDef  *pdev);
+
+USBD_StatusTypeDef  USBD_CtlReceiveStatus (USBD_HandleTypeDef  *pdev);
+
+uint16_t  USBD_GetRxCount (USBD_HandleTypeDef  *pdev , 
+                           uint8_t epnum);
+
+/**
+  * @}
+  */ 
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_IOREQ_H */
+
+/**
+  * @}
+  */ 
+
+/**
+* @}
+*/ 
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.c b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.c
new file mode 100644
index 0000000..0158829
--- /dev/null
+++ b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.c
@@ -0,0 +1,565 @@
+/**
+  ******************************************************************************
+  * @file    usbd_core.c
+  * @author  MCD Application Team
+  * @version V2.4.2
+  * @date    11-December-2015
+  * @brief   This file provides all the USBD core functions.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_core.h"
+
+/** @addtogroup STM32_USBD_DEVICE_LIBRARY
+* @{
+*/
+
+
+/** @defgroup USBD_CORE 
+* @brief usbd core module
+* @{
+*/ 
+
+/** @defgroup USBD_CORE_Private_TypesDefinitions
+* @{
+*/ 
+/**
+* @}
+*/ 
+
+
+/** @defgroup USBD_CORE_Private_Defines
+* @{
+*/ 
+
+/**
+* @}
+*/ 
+
+
+/** @defgroup USBD_CORE_Private_Macros
+* @{
+*/ 
+/**
+* @}
+*/ 
+
+
+
+
+/** @defgroup USBD_CORE_Private_FunctionPrototypes
+* @{
+*/ 
+
+/**
+* @}
+*/ 
+
+/** @defgroup USBD_CORE_Private_Variables
+* @{
+*/ 
+
+/**
+* @}
+*/ 
+
+/** @defgroup USBD_CORE_Private_Functions
+* @{
+*/ 
+
+/**
+* @brief  USBD_Init
+*         Initializes the device stack and load the class driver
+* @param  pdev: device instance
+* @param  pdesc: Descriptor structure address
+* @param  id: Low level core index
+* @retval None
+*/
+USBD_StatusTypeDef USBD_Init(USBD_HandleTypeDef *pdev, USBD_DescriptorsTypeDef *pdesc, uint8_t id)
+{
+  /* Check whether the USB Host handle is valid */
+  if(pdev == NULL)
+  {
+    USBD_ErrLog("Invalid Device handle");
+    return USBD_FAIL; 
+  }
+  
+  /* Unlink previous class*/
+  if(pdev->pClass != NULL)
+  {
+    pdev->pClass = NULL;
+  }
+  
+  /* Assign USBD Descriptors */
+  if(pdesc != NULL)
+  {
+    pdev->pDesc = pdesc;
+  }
+  
+  /* Set Device initial State */
+  pdev->dev_state  = USBD_STATE_DEFAULT;
+  pdev->id = id;
+  /* Initialize low level driver */
+  USBD_LL_Init(pdev);
+  
+  return USBD_OK; 
+}
+
+/**
+* @brief  USBD_DeInit 
+*         Re-Initialize th device library
+* @param  pdev: device instance
+* @retval status: status
+*/
+USBD_StatusTypeDef USBD_DeInit(USBD_HandleTypeDef *pdev)
+{
+  /* Set Default State */
+  pdev->dev_state  = USBD_STATE_DEFAULT;
+  
+  /* Free Class Resources */
+  pdev->pClass->DeInit(pdev, pdev->dev_config);  
+  
+    /* Stop the low level driver  */
+  USBD_LL_Stop(pdev); 
+  
+  /* Initialize low level driver */
+  USBD_LL_DeInit(pdev);
+  
+  return USBD_OK;
+}
+
+
+/**
+  * @brief  USBD_RegisterClass 
+  *         Link class driver to Device Core.
+  * @param  pDevice : Device Handle
+  * @param  pclass: Class handle
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_RegisterClass(USBD_HandleTypeDef *pdev, USBD_ClassTypeDef *pclass)
+{
+  USBD_StatusTypeDef   status = USBD_OK;
+  if(pclass != 0)
+  {
+    /* link the class to the USB Device handle */
+    pdev->pClass = pclass;
+    status = USBD_OK;
+  }
+  else
+  {
+    USBD_ErrLog("Invalid Class handle");
+    status = USBD_FAIL; 
+  }
+  
+  return status;
+}
+
+/**
+  * @brief  USBD_Start 
+  *         Start the USB Device Core.
+  * @param  pdev: Device Handle
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_Start  (USBD_HandleTypeDef *pdev)
+{
+  
+  /* Start the low level driver  */
+  USBD_LL_Start(pdev); 
+  
+  return USBD_OK;  
+}
+
+/**
+  * @brief  USBD_Stop 
+  *         Stop the USB Device Core.
+  * @param  pdev: Device Handle
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_Stop   (USBD_HandleTypeDef *pdev)
+{
+  /* Free Class Resources */
+  pdev->pClass->DeInit(pdev, pdev->dev_config);  
+
+  /* Stop the low level driver  */
+  USBD_LL_Stop(pdev); 
+  
+  return USBD_OK;  
+}
+
+/**
+* @brief  USBD_RunTestMode 
+*         Launch test mode process
+* @param  pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef  USBD_RunTestMode (USBD_HandleTypeDef  *pdev) 
+{
+  return USBD_OK;
+}
+
+
+/**
+* @brief  USBD_SetClassConfig 
+*        Configure device and start the interface
+* @param  pdev: device instance
+* @param  cfgidx: configuration index
+* @retval status
+*/
+
+USBD_StatusTypeDef USBD_SetClassConfig(USBD_HandleTypeDef  *pdev, uint8_t cfgidx)
+{
+  USBD_StatusTypeDef   ret = USBD_FAIL;
+  
+  if(pdev->pClass != NULL)
+  {
+    /* Set configuration  and Start the Class*/
+    if(pdev->pClass->Init(pdev, cfgidx) == 0)
+    {
+      ret = USBD_OK;
+    }
+  }
+  return ret; 
+}
+
+/**
+* @brief  USBD_ClrClassConfig 
+*         Clear current configuration
+* @param  pdev: device instance
+* @param  cfgidx: configuration index
+* @retval status: USBD_StatusTypeDef
+*/
+USBD_StatusTypeDef USBD_ClrClassConfig(USBD_HandleTypeDef  *pdev, uint8_t cfgidx)
+{
+  /* Clear configuration  and De-initialize the Class process*/
+  pdev->pClass->DeInit(pdev, cfgidx);  
+  return USBD_OK;
+}
+
+
+/**
+* @brief  USBD_SetupStage 
+*         Handle the setup stage
+* @param  pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_SetupStage(USBD_HandleTypeDef *pdev, uint8_t *psetup)
+{
+
+  USBD_ParseSetupRequest(&pdev->request, psetup);
+  
+  pdev->ep0_state = USBD_EP0_SETUP;
+  pdev->ep0_data_len = pdev->request.wLength;
+  
+  switch (pdev->request.bmRequest & 0x1F) 
+  {
+  case USB_REQ_RECIPIENT_DEVICE:   
+    USBD_StdDevReq (pdev, &pdev->request);
+    break;
+    
+  case USB_REQ_RECIPIENT_INTERFACE:     
+    USBD_StdItfReq(pdev, &pdev->request);
+    break;
+    
+  case USB_REQ_RECIPIENT_ENDPOINT:        
+    USBD_StdEPReq(pdev, &pdev->request);   
+    break;
+    
+  default:           
+    USBD_LL_StallEP(pdev , pdev->request.bmRequest & 0x80);
+    break;
+  }  
+  return USBD_OK;  
+}
+
+/**
+* @brief  USBD_DataOutStage 
+*         Handle data OUT stage
+* @param  pdev: device instance
+* @param  epnum: endpoint index
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_DataOutStage(USBD_HandleTypeDef *pdev , uint8_t epnum, uint8_t *pdata)
+{
+  USBD_EndpointTypeDef    *pep;
+  
+  if(epnum == 0) 
+  {
+    pep = &pdev->ep_out[0];
+    
+    if ( pdev->ep0_state == USBD_EP0_DATA_OUT)
+    {
+      if(pep->rem_length > pep->maxpacket)
+      {
+        pep->rem_length -=  pep->maxpacket;
+       
+        USBD_CtlContinueRx (pdev, 
+                            pdata,
+                            MIN(pep->rem_length ,pep->maxpacket));
+      }
+      else
+      {
+        if((pdev->pClass->EP0_RxReady != NULL)&&
+           (pdev->dev_state == USBD_STATE_CONFIGURED))
+        {
+          pdev->pClass->EP0_RxReady(pdev); 
+        }
+        USBD_CtlSendStatus(pdev);
+      }
+    }
+  }
+  else if((pdev->pClass->DataOut != NULL)&&
+          (pdev->dev_state == USBD_STATE_CONFIGURED))
+  {
+    pdev->pClass->DataOut(pdev, epnum); 
+  }  
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_DataInStage 
+*         Handle data in stage
+* @param  pdev: device instance
+* @param  epnum: endpoint index
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_DataInStage(USBD_HandleTypeDef *pdev ,uint8_t epnum, uint8_t *pdata)
+{
+  USBD_EndpointTypeDef    *pep;
+    
+  if(epnum == 0) 
+  {
+    pep = &pdev->ep_in[0];
+    
+    if ( pdev->ep0_state == USBD_EP0_DATA_IN)
+    {
+      if(pep->rem_length > pep->maxpacket)
+      {
+        pep->rem_length -=  pep->maxpacket;
+        
+        USBD_CtlContinueSendData (pdev, 
+                                  pdata, 
+                                  pep->rem_length);
+        
+        /* Prepare endpoint for premature end of transfer */
+        USBD_LL_PrepareReceive (pdev,
+                                0,
+                                NULL,
+                                0);  
+      }
+      else
+      { /* last packet is MPS multiple, so send ZLP packet */
+        if((pep->total_length % pep->maxpacket == 0) &&
+           (pep->total_length >= pep->maxpacket) &&
+             (pep->total_length < pdev->ep0_data_len ))
+        {
+          
+          USBD_CtlContinueSendData(pdev , NULL, 0);
+          pdev->ep0_data_len = 0;
+          
+        /* Prepare endpoint for premature end of transfer */
+        USBD_LL_PrepareReceive (pdev,
+                                0,
+                                NULL,
+                                0);
+        }
+        else
+        {
+          if((pdev->pClass->EP0_TxSent != NULL)&&
+             (pdev->dev_state == USBD_STATE_CONFIGURED))
+          {
+            pdev->pClass->EP0_TxSent(pdev); 
+          }          
+          USBD_CtlReceiveStatus(pdev);
+        }
+      }
+    }
+    if (pdev->dev_test_mode == 1)
+    {
+      USBD_RunTestMode(pdev); 
+      pdev->dev_test_mode = 0;
+    }
+  }
+  else if((pdev->pClass->DataIn != NULL)&& 
+          (pdev->dev_state == USBD_STATE_CONFIGURED))
+  {
+    pdev->pClass->DataIn(pdev, epnum); 
+  }  
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_LL_Reset 
+*         Handle Reset event
+* @param  pdev: device instance
+* @retval status
+*/
+
+USBD_StatusTypeDef USBD_LL_Reset(USBD_HandleTypeDef  *pdev)
+{
+  /* Open EP0 OUT */
+  USBD_LL_OpenEP(pdev,
+              0x00,
+              USBD_EP_TYPE_CTRL,
+              USB_MAX_EP0_SIZE);
+  
+  pdev->ep_out[0].maxpacket = USB_MAX_EP0_SIZE;
+  
+  /* Open EP0 IN */
+  USBD_LL_OpenEP(pdev,
+              0x80,
+              USBD_EP_TYPE_CTRL,
+              USB_MAX_EP0_SIZE);
+  
+  pdev->ep_in[0].maxpacket = USB_MAX_EP0_SIZE;
+  /* Upon Reset call user call back */
+  pdev->dev_state = USBD_STATE_DEFAULT;
+  
+  if (pdev->pClassData) 
+    pdev->pClass->DeInit(pdev, pdev->dev_config);  
+ 
+  
+  return USBD_OK;
+}
+
+
+
+
+/**
+* @brief  USBD_LL_Reset 
+*         Handle Reset event
+* @param  pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_SetSpeed(USBD_HandleTypeDef  *pdev, USBD_SpeedTypeDef speed)
+{
+  pdev->dev_speed = speed;
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_Suspend 
+*         Handle Suspend event
+* @param  pdev: device instance
+* @retval status
+*/
+
+USBD_StatusTypeDef USBD_LL_Suspend(USBD_HandleTypeDef  *pdev)
+{
+  pdev->dev_old_state =  pdev->dev_state;
+  pdev->dev_state  = USBD_STATE_SUSPENDED;
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_Resume 
+*         Handle Resume event
+* @param  pdev: device instance
+* @retval status
+*/
+
+USBD_StatusTypeDef USBD_LL_Resume(USBD_HandleTypeDef  *pdev)
+{
+  pdev->dev_state = pdev->dev_old_state;  
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_SOF 
+*         Handle SOF event
+* @param  pdev: device instance
+* @retval status
+*/
+
+USBD_StatusTypeDef USBD_LL_SOF(USBD_HandleTypeDef  *pdev)
+{
+  if(pdev->dev_state == USBD_STATE_CONFIGURED)
+  {
+    if(pdev->pClass->SOF != NULL)
+    {
+      pdev->pClass->SOF(pdev);
+    }
+  }
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_IsoINIncomplete 
+*         Handle iso in incomplete event
+* @param  pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_IsoINIncomplete(USBD_HandleTypeDef  *pdev, uint8_t epnum)
+{
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_IsoOUTIncomplete 
+*         Handle iso out incomplete event
+* @param  pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_IsoOUTIncomplete(USBD_HandleTypeDef  *pdev, uint8_t epnum)
+{
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_DevConnected 
+*         Handle device connection event
+* @param  pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_DevConnected(USBD_HandleTypeDef  *pdev)
+{
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_DevDisconnected 
+*         Handle device disconnection event
+* @param  pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_DevDisconnected(USBD_HandleTypeDef  *pdev)
+{
+  /* Free Class Resources */
+  pdev->dev_state = USBD_STATE_DEFAULT;
+  pdev->pClass->DeInit(pdev, pdev->dev_config);  
+   
+  return USBD_OK;
+}
+/**
+* @}
+*/ 
+
+
+/**
+* @}
+*/ 
+
+
+/**
+* @}
+*/ 
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
diff --git a/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ctlreq.c b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ctlreq.c
new file mode 100644
index 0000000..49330c6
--- /dev/null
+++ b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ctlreq.c
@@ -0,0 +1,782 @@
+/**
+  ******************************************************************************
+  * @file    usbd_req.c
+  * @author  MCD Application Team
+  * @version V2.4.2
+  * @date    11-December-2015 
+  * @brief   This file provides the standard USB requests following chapter 9.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_ctlreq.h"
+#include "usbd_ioreq.h"
+
+
+/** @addtogroup STM32_USBD_STATE_DEVICE_LIBRARY
+  * @{
+  */
+
+
+/** @defgroup USBD_REQ 
+  * @brief USB standard requests module
+  * @{
+  */ 
+
+/** @defgroup USBD_REQ_Private_TypesDefinitions
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_REQ_Private_Defines
+  * @{
+  */ 
+
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_REQ_Private_Macros
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_REQ_Private_Variables
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_REQ_Private_FunctionPrototypes
+  * @{
+  */ 
+static void USBD_GetDescriptor(USBD_HandleTypeDef *pdev , 
+                               USBD_SetupReqTypedef *req);
+
+static void USBD_SetAddress(USBD_HandleTypeDef *pdev , 
+                            USBD_SetupReqTypedef *req);
+
+static void USBD_SetConfig(USBD_HandleTypeDef *pdev , 
+                           USBD_SetupReqTypedef *req);
+
+static void USBD_GetConfig(USBD_HandleTypeDef *pdev , 
+                           USBD_SetupReqTypedef *req);
+
+static void USBD_GetStatus(USBD_HandleTypeDef *pdev , 
+                           USBD_SetupReqTypedef *req);
+
+static void USBD_SetFeature(USBD_HandleTypeDef *pdev , 
+                            USBD_SetupReqTypedef *req);
+
+static void USBD_ClrFeature(USBD_HandleTypeDef *pdev , 
+                            USBD_SetupReqTypedef *req);
+
+static uint8_t USBD_GetLen(uint8_t *buf);
+
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_REQ_Private_Functions
+  * @{
+  */ 
+
+
+/**
+* @brief  USBD_StdDevReq
+*         Handle standard usb device requests
+* @param  pdev: device instance
+* @param  req: usb request
+* @retval status
+*/
+USBD_StatusTypeDef  USBD_StdDevReq (USBD_HandleTypeDef *pdev , USBD_SetupReqTypedef  *req)
+{
+  USBD_StatusTypeDef ret = USBD_OK;  
+  
+  switch (req->bRequest) 
+  {
+  case USB_REQ_GET_DESCRIPTOR: 
+    
+    USBD_GetDescriptor (pdev, req) ;
+    break;
+    
+  case USB_REQ_SET_ADDRESS:                      
+    USBD_SetAddress(pdev, req);
+    break;
+    
+  case USB_REQ_SET_CONFIGURATION:                    
+    USBD_SetConfig (pdev , req);
+    break;
+    
+  case USB_REQ_GET_CONFIGURATION:                 
+    USBD_GetConfig (pdev , req);
+    break;
+    
+  case USB_REQ_GET_STATUS:                                  
+    USBD_GetStatus (pdev , req);
+    break;
+    
+    
+  case USB_REQ_SET_FEATURE:   
+    USBD_SetFeature (pdev , req);    
+    break;
+    
+  case USB_REQ_CLEAR_FEATURE:                                   
+    USBD_ClrFeature (pdev , req);
+    break;
+    
+  default:  
+    USBD_CtlError(pdev , req);
+    break;
+  }
+  
+  return ret;
+}
+
+/**
+* @brief  USBD_StdItfReq
+*         Handle standard usb interface requests
+* @param  pdev: device instance
+* @param  req: usb request
+* @retval status
+*/
+USBD_StatusTypeDef  USBD_StdItfReq (USBD_HandleTypeDef *pdev , USBD_SetupReqTypedef  *req)
+{
+  USBD_StatusTypeDef ret = USBD_OK; 
+  
+  switch (pdev->dev_state) 
+  {
+  case USBD_STATE_CONFIGURED:
+    
+    if (LOBYTE(req->wIndex) <= USBD_MAX_NUM_INTERFACES) 
+    {
+      pdev->pClass->Setup (pdev, req); 
+      
+      if((req->wLength == 0)&& (ret == USBD_OK))
+      {
+         USBD_CtlSendStatus(pdev);
+      }
+    } 
+    else 
+    {                                               
+       USBD_CtlError(pdev , req);
+    }
+    break;
+    
+  default:
+     USBD_CtlError(pdev , req);
+    break;
+  }
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_StdEPReq
+*         Handle standard usb endpoint requests
+* @param  pdev: device instance
+* @param  req: usb request
+* @retval status
+*/
+USBD_StatusTypeDef  USBD_StdEPReq (USBD_HandleTypeDef *pdev , USBD_SetupReqTypedef  *req)
+{
+  
+  uint8_t   ep_addr;
+  USBD_StatusTypeDef ret = USBD_OK; 
+  USBD_EndpointTypeDef   *pep;
+  ep_addr  = LOBYTE(req->wIndex);   
+  
+  /* Check if it is a class request */
+  if ((req->bmRequest & 0x60) == 0x20)
+  {
+    pdev->pClass->Setup (pdev, req);
+    
+    return USBD_OK;
+  }
+  
+  switch (req->bRequest) 
+  {
+    
+  case USB_REQ_SET_FEATURE :
+    
+    switch (pdev->dev_state) 
+    {
+    case USBD_STATE_ADDRESSED:          
+      if ((ep_addr != 0x00) && (ep_addr != 0x80)) 
+      {
+        USBD_LL_StallEP(pdev , ep_addr);
+      }
+      break;	
+      
+    case USBD_STATE_CONFIGURED:   
+      if (req->wValue == USB_FEATURE_EP_HALT)
+      {
+        if ((ep_addr != 0x00) && (ep_addr != 0x80)) 
+        { 
+          USBD_LL_StallEP(pdev , ep_addr);
+          
+        }
+      }
+      pdev->pClass->Setup (pdev, req);   
+      USBD_CtlSendStatus(pdev);
+      
+      break;
+      
+    default:                         
+      USBD_CtlError(pdev , req);
+      break;    
+    }
+    break;
+    
+  case USB_REQ_CLEAR_FEATURE :
+    
+    switch (pdev->dev_state) 
+    {
+    case USBD_STATE_ADDRESSED:          
+      if ((ep_addr != 0x00) && (ep_addr != 0x80)) 
+      {
+        USBD_LL_StallEP(pdev , ep_addr);
+      }
+      break;	
+      
+    case USBD_STATE_CONFIGURED:   
+      if (req->wValue == USB_FEATURE_EP_HALT)
+      {
+        if ((ep_addr & 0x7F) != 0x00) 
+        {        
+          USBD_LL_ClearStallEP(pdev , ep_addr);
+          pdev->pClass->Setup (pdev, req);
+        }
+        USBD_CtlSendStatus(pdev);
+      }
+      break;
+      
+    default:                         
+      USBD_CtlError(pdev , req);
+      break;    
+    }
+    break;
+    
+  case USB_REQ_GET_STATUS:                  
+    switch (pdev->dev_state) 
+    {
+    case USBD_STATE_ADDRESSED:          
+      if ((ep_addr & 0x7F) != 0x00) 
+      {
+        USBD_LL_StallEP(pdev , ep_addr);
+      }
+      break;	
+      
+    case USBD_STATE_CONFIGURED:
+      pep = ((ep_addr & 0x80) == 0x80) ? &pdev->ep_in[ep_addr & 0x7F]:\
+                                         &pdev->ep_out[ep_addr & 0x7F];
+      if(USBD_LL_IsStallEP(pdev, ep_addr))
+      {
+        pep->status = 0x0001;     
+      }
+      else
+      {
+        pep->status = 0x0000;  
+      }
+      
+      USBD_CtlSendData (pdev,
+                        (uint8_t *)&pep->status,
+                        2);
+      break;
+      
+    default:                         
+      USBD_CtlError(pdev , req);
+      break;
+    }
+    break;
+    
+  default:
+    break;
+  }
+  return ret;
+}
+/**
+* @brief  USBD_GetDescriptor
+*         Handle Get Descriptor requests
+* @param  pdev: device instance
+* @param  req: usb request
+* @retval status
+*/
+static void USBD_GetDescriptor(USBD_HandleTypeDef *pdev , 
+                               USBD_SetupReqTypedef *req)
+{
+  uint16_t len;
+  uint8_t *pbuf;
+  
+    
+  switch (req->wValue >> 8)
+  { 
+#if (USBD_LPM_ENABLED == 1)
+  case USB_DESC_TYPE_BOS:
+    pbuf = pdev->pDesc->GetBOSDescriptor(pdev->dev_speed, &len);
+    break;
+#endif    
+  case USB_DESC_TYPE_DEVICE:
+    pbuf = pdev->pDesc->GetDeviceDescriptor(pdev->dev_speed, &len);
+    break;
+    
+  case USB_DESC_TYPE_CONFIGURATION:     
+    if(pdev->dev_speed == USBD_SPEED_HIGH )   
+    {
+      pbuf   = (uint8_t *)pdev->pClass->GetHSConfigDescriptor(&len);
+      pbuf[1] = USB_DESC_TYPE_CONFIGURATION;
+    }
+    else
+    {
+      pbuf   = (uint8_t *)pdev->pClass->GetFSConfigDescriptor(&len);
+      pbuf[1] = USB_DESC_TYPE_CONFIGURATION;
+    }
+    break;
+    
+  case USB_DESC_TYPE_STRING:
+    switch ((uint8_t)(req->wValue))
+    {
+    case USBD_IDX_LANGID_STR:
+     pbuf = pdev->pDesc->GetLangIDStrDescriptor(pdev->dev_speed, &len);        
+      break;
+      
+    case USBD_IDX_MFC_STR:
+      pbuf = pdev->pDesc->GetManufacturerStrDescriptor(pdev->dev_speed, &len);
+      break;
+      
+    case USBD_IDX_PRODUCT_STR:
+      pbuf = pdev->pDesc->GetProductStrDescriptor(pdev->dev_speed, &len);
+      break;
+      
+    case USBD_IDX_SERIAL_STR:
+      pbuf = pdev->pDesc->GetSerialStrDescriptor(pdev->dev_speed, &len);
+      break;
+      
+    case USBD_IDX_CONFIG_STR:
+      pbuf = pdev->pDesc->GetConfigurationStrDescriptor(pdev->dev_speed, &len);
+      break;
+      
+    case USBD_IDX_INTERFACE_STR:
+      pbuf = pdev->pDesc->GetInterfaceStrDescriptor(pdev->dev_speed, &len);
+      break;
+      
+    default:
+#if (USBD_SUPPORT_USER_STRING == 1)
+      pbuf = pdev->pClass->GetUsrStrDescriptor(pdev, (req->wValue) , &len);
+      break;
+#else      
+       USBD_CtlError(pdev , req);
+      return;
+#endif   
+    }
+    break;
+  case USB_DESC_TYPE_DEVICE_QUALIFIER:                   
+
+    if(pdev->dev_speed == USBD_SPEED_HIGH  )   
+    {
+      pbuf   = (uint8_t *)pdev->pClass->GetDeviceQualifierDescriptor(&len);
+      break;
+    }
+    else
+    {
+      USBD_CtlError(pdev , req);
+      return;
+    } 
+
+  case USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION:
+    if(pdev->dev_speed == USBD_SPEED_HIGH  )   
+    {
+      pbuf   = (uint8_t *)pdev->pClass->GetOtherSpeedConfigDescriptor(&len);
+      pbuf[1] = USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION;
+      break; 
+    }
+    else
+    {
+      USBD_CtlError(pdev , req);
+      return;
+    }
+
+  default: 
+     USBD_CtlError(pdev , req);
+    return;
+  }
+  
+  if((len != 0)&& (req->wLength != 0))
+  {
+    
+    len = MIN(len , req->wLength);
+    
+    USBD_CtlSendData (pdev, 
+                      pbuf,
+                      len);
+  }
+  
+}
+
+/**
+* @brief  USBD_SetAddress
+*         Set device address
+* @param  pdev: device instance
+* @param  req: usb request
+* @retval status
+*/
+static void USBD_SetAddress(USBD_HandleTypeDef *pdev , 
+                            USBD_SetupReqTypedef *req)
+{
+  uint8_t  dev_addr; 
+  
+  if ((req->wIndex == 0) && (req->wLength == 0)) 
+  {
+    dev_addr = (uint8_t)(req->wValue) & 0x7F;     
+    
+    if (pdev->dev_state == USBD_STATE_CONFIGURED) 
+    {
+      USBD_CtlError(pdev , req);
+    } 
+    else 
+    {
+      pdev->dev_address = dev_addr;
+      USBD_LL_SetUSBAddress(pdev, dev_addr);               
+      USBD_CtlSendStatus(pdev);                         
+      
+      if (dev_addr != 0) 
+      {
+        pdev->dev_state  = USBD_STATE_ADDRESSED;
+      } 
+      else 
+      {
+        pdev->dev_state  = USBD_STATE_DEFAULT; 
+      }
+    }
+  } 
+  else 
+  {
+     USBD_CtlError(pdev , req);                        
+  } 
+}
+
+/**
+* @brief  USBD_SetConfig
+*         Handle Set device configuration request
+* @param  pdev: device instance
+* @param  req: usb request
+* @retval status
+*/
+static void USBD_SetConfig(USBD_HandleTypeDef *pdev , 
+                           USBD_SetupReqTypedef *req)
+{
+  
+  static uint8_t  cfgidx;
+  
+  cfgidx = (uint8_t)(req->wValue);                 
+  
+  if (cfgidx > USBD_MAX_NUM_CONFIGURATION ) 
+  {            
+     USBD_CtlError(pdev , req);                              
+  } 
+  else 
+  {
+    switch (pdev->dev_state) 
+    {
+    case USBD_STATE_ADDRESSED:
+      if (cfgidx) 
+      {                                			   							   							   				
+        pdev->dev_config = cfgidx;
+        pdev->dev_state = USBD_STATE_CONFIGURED;
+        if(USBD_SetClassConfig(pdev , cfgidx) == USBD_FAIL)
+        {
+          USBD_CtlError(pdev , req);  
+          return;
+        }
+        USBD_CtlSendStatus(pdev);
+      }
+      else 
+      {
+         USBD_CtlSendStatus(pdev);
+      }
+      break;
+      
+    case USBD_STATE_CONFIGURED:
+      if (cfgidx == 0) 
+      {                           
+        pdev->dev_state = USBD_STATE_ADDRESSED;
+        pdev->dev_config = cfgidx;          
+        USBD_ClrClassConfig(pdev , cfgidx);
+        USBD_CtlSendStatus(pdev);
+        
+      } 
+      else  if (cfgidx != pdev->dev_config) 
+      {
+        /* Clear old configuration */
+        USBD_ClrClassConfig(pdev , pdev->dev_config);
+        
+        /* set new configuration */
+        pdev->dev_config = cfgidx;
+        if(USBD_SetClassConfig(pdev , cfgidx) == USBD_FAIL)
+        {
+          USBD_CtlError(pdev , req);  
+          return;
+        }
+        USBD_CtlSendStatus(pdev);
+      }
+      else
+      {
+        USBD_CtlSendStatus(pdev);
+      }
+      break;
+      
+    default:					
+       USBD_CtlError(pdev , req);                     
+      break;
+    }
+  }
+}
+
+/**
+* @brief  USBD_GetConfig
+*         Handle Get device configuration request
+* @param  pdev: device instance
+* @param  req: usb request
+* @retval status
+*/
+static void USBD_GetConfig(USBD_HandleTypeDef *pdev , 
+                           USBD_SetupReqTypedef *req)
+{
+
+  if (req->wLength != 1) 
+  {                   
+     USBD_CtlError(pdev , req);
+  }
+  else 
+  {
+    switch (pdev->dev_state )  
+    {
+    case USBD_STATE_ADDRESSED:                     
+      pdev->dev_default_config = 0;
+      USBD_CtlSendData (pdev, 
+                        (uint8_t *)&pdev->dev_default_config,
+                        1);
+      break;
+      
+    case USBD_STATE_CONFIGURED:   
+      
+      USBD_CtlSendData (pdev, 
+                        (uint8_t *)&pdev->dev_config,
+                        1);
+      break;
+      
+    default:
+       USBD_CtlError(pdev , req);
+      break;
+    }
+  }
+}
+
+/**
+* @brief  USBD_GetStatus
+*         Handle Get Status request
+* @param  pdev: device instance
+* @param  req: usb request
+* @retval status
+*/
+static void USBD_GetStatus(USBD_HandleTypeDef *pdev , 
+                           USBD_SetupReqTypedef *req)
+{
+  
+    
+  switch (pdev->dev_state) 
+  {
+  case USBD_STATE_ADDRESSED:
+  case USBD_STATE_CONFIGURED:
+    
+#if ( USBD_SELF_POWERED == 1)
+    pdev->dev_config_status = USB_CONFIG_SELF_POWERED;                                  
+#else
+    pdev->dev_config_status = 0;                                   
+#endif
+                      
+    if (pdev->dev_remote_wakeup) 
+    {
+       pdev->dev_config_status |= USB_CONFIG_REMOTE_WAKEUP;                                
+    }
+    
+    USBD_CtlSendData (pdev, 
+                      (uint8_t *)& pdev->dev_config_status,
+                      2);
+    break;
+    
+  default :
+    USBD_CtlError(pdev , req);                        
+    break;
+  }
+}
+
+
+/**
+* @brief  USBD_SetFeature
+*         Handle Set device feature request
+* @param  pdev: device instance
+* @param  req: usb request
+* @retval status
+*/
+static void USBD_SetFeature(USBD_HandleTypeDef *pdev , 
+                            USBD_SetupReqTypedef *req)
+{
+
+  if (req->wValue == USB_FEATURE_REMOTE_WAKEUP)
+  {
+    pdev->dev_remote_wakeup = 1;  
+    pdev->pClass->Setup (pdev, req);   
+    USBD_CtlSendStatus(pdev);
+  }
+
+}
+
+
+/**
+* @brief  USBD_ClrFeature
+*         Handle clear device feature request
+* @param  pdev: device instance
+* @param  req: usb request
+* @retval status
+*/
+static void USBD_ClrFeature(USBD_HandleTypeDef *pdev , 
+                            USBD_SetupReqTypedef *req)
+{
+  switch (pdev->dev_state)
+  {
+  case USBD_STATE_ADDRESSED:
+  case USBD_STATE_CONFIGURED:
+    if (req->wValue == USB_FEATURE_REMOTE_WAKEUP) 
+    {
+      pdev->dev_remote_wakeup = 0; 
+      pdev->pClass->Setup (pdev, req);   
+      USBD_CtlSendStatus(pdev);
+    }
+    break;
+    
+  default :
+     USBD_CtlError(pdev , req);
+    break;
+  }
+}
+
+/**
+* @brief  USBD_ParseSetupRequest 
+*         Copy buffer into setup structure
+* @param  pdev: device instance
+* @param  req: usb request
+* @retval None
+*/
+
+void USBD_ParseSetupRequest(USBD_SetupReqTypedef *req, uint8_t *pdata)
+{
+  req->bmRequest     = *(uint8_t *)  (pdata);
+  req->bRequest      = *(uint8_t *)  (pdata +  1);
+  req->wValue        = SWAPBYTE      (pdata +  2);
+  req->wIndex        = SWAPBYTE      (pdata +  4);
+  req->wLength       = SWAPBYTE      (pdata +  6);
+
+}
+
+/**
+* @brief  USBD_CtlError 
+*         Handle USB low level Error
+* @param  pdev: device instance
+* @param  req: usb request
+* @retval None
+*/
+
+void USBD_CtlError( USBD_HandleTypeDef *pdev ,
+                            USBD_SetupReqTypedef *req)
+{
+  USBD_LL_StallEP(pdev , 0x80);
+  USBD_LL_StallEP(pdev , 0);
+}
+
+
+/**
+  * @brief  USBD_GetString
+  *         Convert Ascii string into unicode one
+  * @param  desc : descriptor buffer
+  * @param  unicode : Formatted string buffer (unicode)
+  * @param  len : descriptor length
+  * @retval None
+  */
+void USBD_GetString(uint8_t *desc, uint8_t *unicode, uint16_t *len)
+{
+  uint8_t idx = 0;
+  
+  if (desc != NULL) 
+  {
+    *len =  USBD_GetLen(desc) * 2 + 2;    
+    unicode[idx++] = *len;
+    unicode[idx++] =  USB_DESC_TYPE_STRING;
+    
+    while (*desc != '\0') 
+    {
+      unicode[idx++] = *desc++;
+      unicode[idx++] =  0x00;
+    }
+  } 
+}
+
+/**
+  * @brief  USBD_GetLen
+  *         return the string length
+   * @param  buf : pointer to the ascii string buffer
+  * @retval string length
+  */
+static uint8_t USBD_GetLen(uint8_t *buf)
+{
+    uint8_t  len = 0;
+
+    while (*buf != '\0') 
+    {
+        len++;
+        buf++;
+    }
+
+    return len;
+}
+/**
+  * @}
+  */ 
+
+
+/**
+  * @}
+  */ 
+
+
+/**
+  * @}
+  */ 
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ioreq.c b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ioreq.c
new file mode 100644
index 0000000..093afad
--- /dev/null
+++ b/stm32cubemx/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ioreq.c
@@ -0,0 +1,236 @@
+/**
+  ******************************************************************************
+  * @file    usbd_ioreq.c
+  * @author  MCD Application Team
+  * @version V2.4.2
+  * @date    11-December-2015
+  * @brief   This file provides the IO requests APIs for control endpoints.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_ioreq.h"
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+  * @{
+  */
+
+
+/** @defgroup USBD_IOREQ 
+  * @brief control I/O requests module
+  * @{
+  */ 
+
+/** @defgroup USBD_IOREQ_Private_TypesDefinitions
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_IOREQ_Private_Defines
+  * @{
+  */ 
+
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_IOREQ_Private_Macros
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_IOREQ_Private_Variables
+  * @{
+  */ 
+
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_IOREQ_Private_FunctionPrototypes
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_IOREQ_Private_Functions
+  * @{
+  */ 
+
+/**
+* @brief  USBD_CtlSendData
+*         send data on the ctl pipe
+* @param  pdev: device instance
+* @param  buff: pointer to data buffer
+* @param  len: length of data to be sent
+* @retval status
+*/
+USBD_StatusTypeDef  USBD_CtlSendData (USBD_HandleTypeDef  *pdev, 
+                               uint8_t *pbuf,
+                               uint16_t len)
+{
+  /* Set EP0 State */
+  pdev->ep0_state          = USBD_EP0_DATA_IN;                                      
+  pdev->ep_in[0].total_length = len;
+  pdev->ep_in[0].rem_length   = len;
+ /* Start the transfer */
+  USBD_LL_Transmit (pdev, 0x00, pbuf, len);  
+  
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_CtlContinueSendData
+*         continue sending data on the ctl pipe
+* @param  pdev: device instance
+* @param  buff: pointer to data buffer
+* @param  len: length of data to be sent
+* @retval status
+*/
+USBD_StatusTypeDef  USBD_CtlContinueSendData (USBD_HandleTypeDef  *pdev, 
+                                       uint8_t *pbuf,
+                                       uint16_t len)
+{
+ /* Start the next transfer */
+  USBD_LL_Transmit (pdev, 0x00, pbuf, len);   
+  
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_CtlPrepareRx
+*         receive data on the ctl pipe
+* @param  pdev: device instance
+* @param  buff: pointer to data buffer
+* @param  len: length of data to be received
+* @retval status
+*/
+USBD_StatusTypeDef  USBD_CtlPrepareRx (USBD_HandleTypeDef  *pdev,
+                                  uint8_t *pbuf,                                  
+                                  uint16_t len)
+{
+  /* Set EP0 State */
+  pdev->ep0_state = USBD_EP0_DATA_OUT; 
+  pdev->ep_out[0].total_length = len;
+  pdev->ep_out[0].rem_length   = len;
+  /* Start the transfer */
+  USBD_LL_PrepareReceive (pdev,
+                          0,
+                          pbuf,
+                         len);
+  
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_CtlContinueRx
+*         continue receive data on the ctl pipe
+* @param  pdev: device instance
+* @param  buff: pointer to data buffer
+* @param  len: length of data to be received
+* @retval status
+*/
+USBD_StatusTypeDef  USBD_CtlContinueRx (USBD_HandleTypeDef  *pdev, 
+                                          uint8_t *pbuf,                                          
+                                          uint16_t len)
+{
+
+  USBD_LL_PrepareReceive (pdev,
+                          0,                     
+                          pbuf,                         
+                          len);
+  return USBD_OK;
+}
+/**
+* @brief  USBD_CtlSendStatus
+*         send zero lzngth packet on the ctl pipe
+* @param  pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef  USBD_CtlSendStatus (USBD_HandleTypeDef  *pdev)
+{
+
+  /* Set EP0 State */
+  pdev->ep0_state = USBD_EP0_STATUS_IN;
+  
+ /* Start the transfer */
+  USBD_LL_Transmit (pdev, 0x00, NULL, 0);   
+  
+  return USBD_OK;
+}
+
+/**
+* @brief  USBD_CtlReceiveStatus
+*         receive zero lzngth packet on the ctl pipe
+* @param  pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef  USBD_CtlReceiveStatus (USBD_HandleTypeDef  *pdev)
+{
+  /* Set EP0 State */
+  pdev->ep0_state = USBD_EP0_STATUS_OUT; 
+  
+ /* Start the transfer */  
+  USBD_LL_PrepareReceive ( pdev,
+                    0,
+                    NULL,
+                    0);  
+
+  return USBD_OK;
+}
+
+
+/**
+* @brief  USBD_GetRxCount
+*         returns the received data length
+* @param  pdev: device instance
+* @param  ep_addr: endpoint address
+* @retval Rx Data blength
+*/
+uint16_t  USBD_GetRxCount (USBD_HandleTypeDef  *pdev , uint8_t ep_addr)
+{
+  return USBD_LL_GetRxDataSize(pdev, ep_addr);
+}
+
+/**
+  * @}
+  */ 
+
+
+/**
+  * @}
+  */ 
+
+
+/**
+  * @}
+  */ 
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Src/main.c b/stm32cubemx/Src/main.c
index e9fdb8e..0afb615 100644
--- a/stm32cubemx/Src/main.c
+++ b/stm32cubemx/Src/main.c
@@ -4,43 +4,53 @@
   * Description        : Main program body
   ******************************************************************************
   *
-  * COPYRIGHT(c) 2017 STMicroelectronics
+  * Copyright (c) 2017 STMicroelectronics International N.V. 
+  * All rights reserved.
   *
-  * Redistribution and use in source and binary forms, with or without modification,
-  * are permitted provided that the following conditions are met:
-  *   1. Redistributions of source code must retain the above copyright notice,
-  *      this list of conditions and the following disclaimer.
-  *   2. Redistributions in binary form must reproduce the above copyright notice,
-  *      this list of conditions and the following disclaimer in the documentation
-  *      and/or other materials provided with the distribution.
-  *   3. Neither the name of STMicroelectronics nor the names of its contributors
-  *      may be used to endorse or promote products derived from this software
-  *      without specific prior written permission.
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
   *
-  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   ******************************************************************************
   */
 /* Includes ------------------------------------------------------------------*/
+#include <inttypes.h>
 #include "main.h"
 #include "stm32f1xx_hal.h"
+#include "usb_device.h"
 
 /* USER CODE BEGIN Includes */
 
 /* USER CODE END Includes */
 
 /* Private variables ---------------------------------------------------------*/
-IWDG_HandleTypeDef hiwdg;
-
 TIM_HandleTypeDef htim1;
 DMA_HandleTypeDef hdma_tim1_ch1;
 
@@ -55,7 +65,6 @@ void Error_Handler(void);
 static void MX_GPIO_Init(void);
 static void MX_DMA_Init(void);
 static void MX_TIM1_Init(void);
-static void MX_IWDG_Init(void);
 static void MX_NVIC_Init(void);
 
 /* USER CODE BEGIN PFP */
@@ -86,7 +95,7 @@ int main(void)
   MX_GPIO_Init();
   MX_DMA_Init();
   MX_TIM1_Init();
-  MX_IWDG_Init();
+  MX_USB_DEVICE_Init();
 
   /* Initialize interrupts */
   MX_NVIC_Init();
@@ -115,14 +124,14 @@ void SystemClock_Config(void)
 
   RCC_OscInitTypeDef RCC_OscInitStruct;
   RCC_ClkInitTypeDef RCC_ClkInitStruct;
+  RCC_PeriphCLKInitTypeDef PeriphClkInit;
 
     /**Initializes the CPU, AHB and APB busses clocks 
     */
-  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
   RCC_OscInitStruct.HSEState = RCC_HSE_ON;
   RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
-  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
   RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
@@ -145,6 +154,13 @@ void SystemClock_Config(void)
     Error_Handler();
   }
 
+  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
+  PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLL_DIV1_5;
+  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
+  {
+    Error_Handler();
+  }
+
     /**Configure the Systick interrupt time 
     */
   HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
@@ -166,20 +182,6 @@ static void MX_NVIC_Init(void)
   HAL_NVIC_EnableIRQ(TIM1_TRG_COM_IRQn);
 }
 
-/* IWDG init function */
-static void MX_IWDG_Init(void)
-{
-
-  hiwdg.Instance = IWDG;
-  hiwdg.Init.Prescaler = IWDG_PRESCALER_4;
-  hiwdg.Init.Reload = 4095;
-  if (HAL_IWDG_Init(&hiwdg) != HAL_OK)
-  {
-    Error_Handler();
-  }
-
-}
-
 /* TIM1 init function */
 static void MX_TIM1_Init(void)
 {
@@ -219,7 +221,7 @@ static void MX_TIM1_Init(void)
 /** 
   * Enable DMA controller clock
   */
-static void MX_DMA_Init(void) 
+static void MX_DMA_Init(void)
 {
   /* DMA controller clock enable */
   __HAL_RCC_DMA1_CLK_ENABLE();
@@ -261,10 +263,10 @@ void Error_Handler(void)
 {
   /* USER CODE BEGIN Error_Handler */
   /* User can add his own implementation to report the HAL error return state */
-  while(1) 
+  while(1)
   {
   }
-  /* USER CODE END Error_Handler */ 
+  /* USER CODE END Error_Handler */
 }
 
 #ifdef USE_FULL_ASSERT
@@ -289,10 +291,10 @@ void assert_failed(uint8_t* file, uint32_t line)
 
 /**
   * @}
-  */ 
+  */
 
 /**
   * @}
-*/ 
+*/
 
 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Src/stm32f1xx_hal_msp.c b/stm32cubemx/Src/stm32f1xx_hal_msp.c
index be02361..f0cb212 100644
--- a/stm32cubemx/Src/stm32f1xx_hal_msp.c
+++ b/stm32cubemx/Src/stm32f1xx_hal_msp.c
@@ -5,29 +5,39 @@
   *                      and de-Initialization codes.
   ******************************************************************************
   *
-  * COPYRIGHT(c) 2017 STMicroelectronics
+  * Copyright (c) 2017 STMicroelectronics International N.V. 
+  * All rights reserved.
   *
-  * Redistribution and use in source and binary forms, with or without modification,
-  * are permitted provided that the following conditions are met:
-  *   1. Redistributions of source code must retain the above copyright notice,
-  *      this list of conditions and the following disclaimer.
-  *   2. Redistributions in binary form must reproduce the above copyright notice,
-  *      this list of conditions and the following disclaimer in the documentation
-  *      and/or other materials provided with the distribution.
-  *   3. Neither the name of STMicroelectronics nor the names of its contributors
-  *      may be used to endorse or promote products derived from this software
-  *      without specific prior written permission.
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
   *
-  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   ******************************************************************************
   */
diff --git a/stm32cubemx/Src/stm32f1xx_it.c b/stm32cubemx/Src/stm32f1xx_it.c
index 473a07a..a71b015 100644
--- a/stm32cubemx/Src/stm32f1xx_it.c
+++ b/stm32cubemx/Src/stm32f1xx_it.c
@@ -36,10 +36,11 @@
 #include "stm32f1xx_it.h"
 
 /* USER CODE BEGIN 0 */
-
+#include "main.h"
 /* USER CODE END 0 */
 
 /* External variables --------------------------------------------------------*/
+extern PCD_HandleTypeDef hpcd_USB_FS;
 extern DMA_HandleTypeDef hdma_tim1_ch1;
 extern TIM_HandleTypeDef htim1;
 
@@ -200,12 +201,40 @@ void DMA1_Channel2_IRQHandler(void)
 }
 
 /**
+* @brief This function handles USB high priority or CAN TX interrupts.
+*/
+void USB_HP_CAN1_TX_IRQHandler(void)
+{
+  /* USER CODE BEGIN USB_HP_CAN1_TX_IRQn 0 */
+
+  /* USER CODE END USB_HP_CAN1_TX_IRQn 0 */
+  HAL_PCD_IRQHandler(&hpcd_USB_FS);
+  /* USER CODE BEGIN USB_HP_CAN1_TX_IRQn 1 */
+
+  /* USER CODE END USB_HP_CAN1_TX_IRQn 1 */
+}
+
+/**
+* @brief This function handles USB low priority or CAN RX0 interrupts.
+*/
+void USB_LP_CAN1_RX0_IRQHandler(void)
+{
+  /* USER CODE BEGIN USB_LP_CAN1_RX0_IRQn 0 */
+
+  /* USER CODE END USB_LP_CAN1_RX0_IRQn 0 */
+  HAL_PCD_IRQHandler(&hpcd_USB_FS);
+  /* USER CODE BEGIN USB_LP_CAN1_RX0_IRQn 1 */
+
+  /* USER CODE END USB_LP_CAN1_RX0_IRQn 1 */
+}
+
+/**
 * @brief This function handles TIM1 trigger and commutation interrupts.
 */
 void TIM1_TRG_COM_IRQHandler(void)
 {
   /* USER CODE BEGIN TIM1_TRG_COM_IRQn 0 */
-
+  it_tim1(&htim1);
   /* USER CODE END TIM1_TRG_COM_IRQn 0 */
   HAL_TIM_IRQHandler(&htim1);
   /* USER CODE BEGIN TIM1_TRG_COM_IRQn 1 */
diff --git a/stm32cubemx/Src/usb_device.c b/stm32cubemx/Src/usb_device.c
new file mode 100644
index 0000000..2a51b5e
--- /dev/null
+++ b/stm32cubemx/Src/usb_device.c
@@ -0,0 +1,77 @@
+/**
+  ******************************************************************************
+  * @file           : USB_DEVICE  
+  * @version        : v2.0_Cube
+  * @brief          : This file implements the USB Device 
+  ******************************************************************************
+  *
+  * Copyright (c) 2017 STMicroelectronics International N.V. 
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+*/
+
+/* Includes ------------------------------------------------------------------*/
+
+#include "usb_device.h"
+#include "usbd_core.h"
+#include "usbd_desc.h"
+#include "usbd_cdc.h"
+#include "usbd_cdc_if.h"
+
+/* USB Device Core handle declaration */
+USBD_HandleTypeDef hUsbDeviceFS;
+
+/* init function */				        
+void MX_USB_DEVICE_Init(void)
+{
+  /* Init Device Library,Add Supported Class and Start the library*/
+  USBD_Init(&hUsbDeviceFS, &FS_Desc, DEVICE_FS);
+
+  USBD_RegisterClass(&hUsbDeviceFS, &USBD_CDC);
+
+  USBD_CDC_RegisterInterface(&hUsbDeviceFS, &USBD_Interface_fops_FS);
+
+  USBD_Start(&hUsbDeviceFS);
+
+}
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Src/usbd_cdc_if.c b/stm32cubemx/Src/usbd_cdc_if.c
new file mode 100644
index 0000000..a468e94
--- /dev/null
+++ b/stm32cubemx/Src/usbd_cdc_if.c
@@ -0,0 +1,322 @@
+/**
+  ******************************************************************************
+  * @file           : usbd_cdc_if.c
+  * @brief          :
+  ******************************************************************************
+  *
+  * Copyright (c) 2017 STMicroelectronics International N.V. 
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+*/
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_cdc_if.h"
+/* USER CODE BEGIN INCLUDE */
+/* USER CODE END INCLUDE */
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+  * @{
+  */
+
+/** @defgroup USBD_CDC 
+  * @brief usbd core module
+  * @{
+  */
+
+/** @defgroup USBD_CDC_Private_TypesDefinitions
+  * @{
+  */
+/* USER CODE BEGIN PRIVATE_TYPES */
+/* USER CODE END PRIVATE_TYPES */
+/**
+  * @}
+  */
+
+/** @defgroup USBD_CDC_Private_Defines
+  * @{
+  */
+/* USER CODE BEGIN PRIVATE_DEFINES */
+/* Define size for the receive and transmit buffer over CDC */
+/* It's up to user to redefine and/or remove those define */
+#define APP_RX_DATA_SIZE  4
+#define APP_TX_DATA_SIZE  4
+/* USER CODE END PRIVATE_DEFINES */
+/**
+  * @}
+  */
+
+/** @defgroup USBD_CDC_Private_Macros
+  * @{
+  */
+/* USER CODE BEGIN PRIVATE_MACRO */
+/* USER CODE END PRIVATE_MACRO */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_CDC_Private_Variables
+  * @{
+  */
+/* Create buffer for reception and transmission           */
+/* It's up to user to redefine and/or remove those define */
+/* Received Data over USB are stored in this buffer       */
+uint8_t UserRxBufferFS[APP_RX_DATA_SIZE];
+
+/* Send Data over USB CDC are stored in this buffer       */
+uint8_t UserTxBufferFS[APP_TX_DATA_SIZE];
+
+/* USER CODE BEGIN PRIVATE_VARIABLES */
+/* USER CODE END PRIVATE_VARIABLES */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_CDC_IF_Exported_Variables
+  * @{
+  */
+  extern USBD_HandleTypeDef hUsbDeviceFS;
+/* USER CODE BEGIN EXPORTED_VARIABLES */
+/* USER CODE END EXPORTED_VARIABLES */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_CDC_Private_FunctionPrototypes
+  * @{
+  */
+static int8_t CDC_Init_FS     (void);
+static int8_t CDC_DeInit_FS   (void);
+static int8_t CDC_Control_FS  (uint8_t cmd, uint8_t* pbuf, uint16_t length);
+static int8_t CDC_Receive_FS  (uint8_t* pbuf, uint32_t *Len);
+
+/* USER CODE BEGIN PRIVATE_FUNCTIONS_DECLARATION */
+/* USER CODE END PRIVATE_FUNCTIONS_DECLARATION */
+
+/**
+  * @}
+  */
+
+USBD_CDC_ItfTypeDef USBD_Interface_fops_FS =
+{
+  CDC_Init_FS,
+  CDC_DeInit_FS,
+  CDC_Control_FS,
+  CDC_Receive_FS
+};
+
+/* Private functions ---------------------------------------------------------*/
+/**
+  * @brief  CDC_Init_FS
+  *         Initializes the CDC media low layer over the FS USB IP
+  * @param  None
+  * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
+  */
+static int8_t CDC_Init_FS(void)
+{
+  /* USER CODE BEGIN 3 */
+  /* Set Application Buffers */
+  USBD_CDC_SetTxBuffer(&hUsbDeviceFS, UserTxBufferFS, 0);
+  USBD_CDC_SetRxBuffer(&hUsbDeviceFS, UserRxBufferFS);
+  printf("%s: \n", __FUNCTION__);
+  return (USBD_OK);
+  /* USER CODE END 3 */
+}
+
+/**
+  * @brief  CDC_DeInit_FS
+  *         DeInitializes the CDC media low layer
+  * @param  None
+  * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
+  */
+static int8_t CDC_DeInit_FS(void)
+{
+  /* USER CODE BEGIN 4 */
+  printf("%s: \n", __FUNCTION__);
+  return (USBD_OK);
+  /* USER CODE END 4 */
+}
+
+/**
+  * @brief  CDC_Control_FS
+  *         Manage the CDC class requests
+  * @param  cmd: Command code            
+  * @param  pbuf: Buffer containing command data (request parameters)
+  * @param  length: Number of data to be sent (in bytes)
+  * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
+  */
+static int8_t CDC_Control_FS  (uint8_t cmd, uint8_t* pbuf, uint16_t length)
+{
+  /* USER CODE BEGIN 5 */
+  switch (cmd)
+  {
+  case CDC_SEND_ENCAPSULATED_COMMAND:
+
+    break;
+
+  case CDC_GET_ENCAPSULATED_RESPONSE:
+
+    break;
+
+  case CDC_SET_COMM_FEATURE:
+
+    break;
+
+  case CDC_GET_COMM_FEATURE:
+
+    break;
+
+  case CDC_CLEAR_COMM_FEATURE:
+
+    break;
+
+  /*******************************************************************************/
+  /* Line Coding Structure                                                       */
+  /*-----------------------------------------------------------------------------*/
+  /* Offset | Field       | Size | Value  | Description                          */
+  /* 0      | dwDTERate   |   4  | Number |Data terminal rate, in bits per second*/
+  /* 4      | bCharFormat |   1  | Number | Stop bits                            */
+  /*                                        0 - 1 Stop bit                       */
+  /*                                        1 - 1.5 Stop bits                    */
+  /*                                        2 - 2 Stop bits                      */
+  /* 5      | bParityType |  1   | Number | Parity                               */
+  /*                                        0 - None                             */
+  /*                                        1 - Odd                              */
+  /*                                        2 - Even                             */
+  /*                                        3 - Mark                             */
+  /*                                        4 - Space                            */
+  /* 6      | bDataBits  |   1   | Number Data bits (5, 6, 7, 8 or 16).          */
+  /*******************************************************************************/
+  case CDC_SET_LINE_CODING: {
+      uint32_t bps = pbuf[0] << 24 | pbuf[1] << 16 | pbuf[2] << 8 | pbuf[3];
+      const char *stop_bits = pbuf[4] == 0 ? "1" : pbuf[4] == 1 ? "1.5" : "2";
+      const char *parities[5] = {"none", "odd", "even", "mark", "space"};
+      const char *parity = parities[pbuf[5]];
+      int bits = pbuf[6];
+      printf("Line coding, bps=%lu, bits=%s, parity=%s, bits=%d\n", bps, stop_bits, parity, bits);
+    }
+    break;
+
+  case CDC_GET_LINE_CODING:
+
+    break;
+
+  case CDC_SET_CONTROL_LINE_STATE:
+
+    break;
+
+  case CDC_SEND_BREAK:
+
+    break;
+
+  default:
+    break;
+  }
+
+  return (USBD_OK);
+  /* USER CODE END 5 */
+}
+
+/**
+  * @brief  CDC_Receive_FS
+  *         Data received over USB OUT endpoint are sent over CDC interface 
+  *         through this function.
+  *           
+  *         @note
+  *         This function will block any OUT packet reception on USB endpoint 
+  *         untill exiting this function. If you exit this function before transfer
+  *         is complete on CDC interface (ie. using DMA controller) it will result 
+  *         in receiving more data while previous ones are still not sent.
+  *                 
+  * @param  Buf: Buffer of data to be received
+  * @param  Len: Number of data received (in bytes)
+  * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
+  */
+static int8_t CDC_Receive_FS (uint8_t* Buf, uint32_t *Len)
+{
+  /* USER CODE BEGIN 6 */
+  USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]);
+  USBD_CDC_ReceivePacket(&hUsbDeviceFS);
+
+  printf("USB OUT: len=%lu, data=", *Len);
+  for(uint32_t i = 0; i < *Len; i++) {
+    printf("%02x", Buf[i]);
+  }
+  printf("\n");
+
+  return (USBD_OK);
+  /* USER CODE END 6 */
+}
+
+/**
+  * @brief  CDC_Transmit_FS
+  *         Data send over USB IN endpoint are sent over CDC interface 
+  *         through this function.           
+  *         @note
+  *         
+  *                 
+  * @param  Buf: Buffer of data to be send
+  * @param  Len: Number of data to be send (in bytes)
+  * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL or USBD_BUSY
+  */
+uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len)
+{
+  uint8_t result = USBD_OK;
+  /* USER CODE BEGIN 7 */
+  USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*)hUsbDeviceFS.pClassData;
+  if (hcdc->TxState != 0){
+    return USBD_BUSY;
+  }
+  USBD_CDC_SetTxBuffer(&hUsbDeviceFS, Buf, Len);
+  result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);
+  /* USER CODE END 7 */
+  return result;
+}
+
+/* USER CODE BEGIN PRIVATE_FUNCTIONS_IMPLEMENTATION */
+/* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
diff --git a/stm32cubemx/Src/usbd_conf.c b/stm32cubemx/Src/usbd_conf.c
new file mode 100644
index 0000000..61661bf
--- /dev/null
+++ b/stm32cubemx/Src/usbd_conf.c
@@ -0,0 +1,754 @@
+/**
+  ******************************************************************************
+  * @file           : usbd_conf.c
+  * @version        : v2.0_Cube
+  * @brief          : This file implements the board support package for the USB device library
+  ******************************************************************************
+  *
+  * Copyright (c) 2017 STMicroelectronics International N.V. 
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+*/
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx.h"
+#include "stm32f1xx_hal.h"
+#include "usbd_def.h"
+#include "usbd_core.h"
+#include "usbd_cdc.h"
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+PCD_HandleTypeDef hpcd_USB_FS;
+void Error_Handler(void);
+
+/* USER CODE BEGIN 0 */
+/* USER CODE END 0 */
+
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/* USER CODE BEGIN 1 */
+/* USER CODE END 1 */
+void HAL_PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state);
+
+/*******************************************************************************
+                       LL Driver Callbacks (PCD -> USB Device Library)
+*******************************************************************************/
+/* MSP Init */
+
+void HAL_PCD_MspInit(PCD_HandleTypeDef* pcdHandle)
+{
+  if(pcdHandle->Instance==USB)
+  {
+  /* USER CODE BEGIN USB_MspInit 0 */
+
+  /* USER CODE END USB_MspInit 0 */
+    /* Peripheral clock enable */
+    __HAL_RCC_USB_CLK_ENABLE();
+
+    /* Peripheral interrupt init */
+    HAL_NVIC_SetPriority(USB_HP_CAN1_TX_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(USB_HP_CAN1_TX_IRQn);
+    HAL_NVIC_SetPriority(USB_LP_CAN1_RX0_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(USB_LP_CAN1_RX0_IRQn);
+  /* USER CODE BEGIN USB_MspInit 1 */
+
+  /* USER CODE END USB_MspInit 1 */
+  }
+}
+
+void HAL_PCD_MspDeInit(PCD_HandleTypeDef* pcdHandle)
+{
+  if(pcdHandle->Instance==USB)
+  {
+  /* USER CODE BEGIN USB_MspDeInit 0 */
+
+  /* USER CODE END USB_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_USB_CLK_DISABLE();
+
+    /* Peripheral interrupt Deinit*/
+    HAL_NVIC_DisableIRQ(USB_HP_CAN1_TX_IRQn);
+
+    HAL_NVIC_DisableIRQ(USB_LP_CAN1_RX0_IRQn);
+
+  /* USER CODE BEGIN USB_MspDeInit 1 */
+
+  /* USER CODE END USB_MspDeInit 1 */
+  }
+}
+
+/**
+  * @brief  Setup Stage callback
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd)
+{
+  USBD_LL_SetupStage((USBD_HandleTypeDef*)hpcd->pData, (uint8_t *)hpcd->Setup);
+}
+
+/**
+  * @brief  Data Out Stage callback.
+  * @param  hpcd: PCD handle
+  * @param  epnum: Endpoint Number
+  * @retval None
+  */
+void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+{
+  USBD_LL_DataOutStage((USBD_HandleTypeDef*)hpcd->pData, epnum, hpcd->OUT_ep[epnum].xfer_buff);
+}
+
+/**
+  * @brief  Data In Stage callback..
+  * @param  hpcd: PCD handle
+  * @param  epnum: Endpoint Number
+  * @retval None
+  */
+void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+{
+  USBD_LL_DataInStage((USBD_HandleTypeDef*)hpcd->pData, epnum, hpcd->IN_ep[epnum].xfer_buff);
+}
+
+/**
+  * @brief  SOF callback.
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
+{
+  USBD_LL_SOF((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+  * @brief  Reset callback.
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
+{ 
+  USBD_SpeedTypeDef speed = USBD_SPEED_FULL;
+
+  /*Set USB Current Speed*/
+  switch (hpcd->Init.speed)
+  {
+  case PCD_SPEED_FULL:
+    speed = USBD_SPEED_FULL;    
+    break;
+	
+  default:
+    speed = USBD_SPEED_FULL;    
+    break;    
+  }
+  USBD_LL_SetSpeed((USBD_HandleTypeDef*)hpcd->pData, speed);  
+  
+  /*Reset Device*/
+  USBD_LL_Reset((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+  * @brief  Suspend callback.
+  * When Low power mode is enabled the debug cannot be used (IAR, Keil doesn't support it)
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
+{
+  /* Inform USB library that core enters in suspend Mode */
+  USBD_LL_Suspend((USBD_HandleTypeDef*)hpcd->pData);
+  /*Enter in STOP mode */
+  /* USER CODE BEGIN 2 */  
+  if (hpcd->Init.low_power_enable)
+  {
+    /* Set SLEEPDEEP bit and SleepOnExit of Cortex System Control Register */
+    SCB->SCR |= (uint32_t)((uint32_t)(SCB_SCR_SLEEPDEEP_Msk | SCB_SCR_SLEEPONEXIT_Msk));
+  }
+  /* USER CODE END 2 */
+}
+
+/**
+  * @brief  Resume callback.
+  * When Low power mode is enabled the debug cannot be used (IAR, Keil doesn't support it)
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
+{
+  /* USER CODE BEGIN 3 */
+  /* USER CODE END 3 */
+  USBD_LL_Resume((USBD_HandleTypeDef*)hpcd->pData);
+  
+}
+
+/**
+  * @brief  ISOOUTIncomplete callback.
+  * @param  hpcd: PCD handle
+  * @param  epnum: Endpoint Number
+  * @retval None
+  */
+void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+{
+  USBD_LL_IsoOUTIncomplete((USBD_HandleTypeDef*)hpcd->pData, epnum);
+}
+
+/**
+  * @brief  ISOINIncomplete callback.
+  * @param  hpcd: PCD handle
+  * @param  epnum: Endpoint Number
+  * @retval None
+  */
+void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+{
+  USBD_LL_IsoINIncomplete((USBD_HandleTypeDef*)hpcd->pData, epnum);
+}
+
+/**
+  * @brief  ConnectCallback callback.
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd)
+{
+  USBD_LL_DevConnected((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+  * @brief  Disconnect callback.
+  * @param  hpcd: PCD handle
+  * @retval None
+  */
+void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd)
+{
+  USBD_LL_DevDisconnected((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/*******************************************************************************
+                       LL Driver Interface (USB Device Library --> PCD)
+*******************************************************************************/
+/**
+  * @brief  Initializes the Low Level portion of the Device driver.
+  * @param  pdev: Device handle
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_LL_Init (USBD_HandleTypeDef *pdev)
+{ 
+  /* Init USB_IP */
+  /* Link The driver to the stack */
+  hpcd_USB_FS.pData = pdev;
+  pdev->pData = &hpcd_USB_FS;
+
+  hpcd_USB_FS.Instance = USB;
+  hpcd_USB_FS.Init.dev_endpoints = 8;
+  hpcd_USB_FS.Init.speed = PCD_SPEED_FULL;
+  hpcd_USB_FS.Init.ep0_mps = DEP0CTL_MPS_8;
+  hpcd_USB_FS.Init.low_power_enable = DISABLE;
+  hpcd_USB_FS.Init.lpm_enable = DISABLE;
+  hpcd_USB_FS.Init.battery_charging_enable = DISABLE;
+  if (HAL_PCD_Init(&hpcd_USB_FS) != HAL_OK)
+  {
+    Error_Handler();
+  }
+
+  HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x00 , PCD_SNG_BUF, 0x18);
+  HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x80 , PCD_SNG_BUF, 0x58);
+  HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x81 , PCD_SNG_BUF, 0xC0);  
+  HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x01 , PCD_SNG_BUF, 0x110);
+  HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x82 , PCD_SNG_BUF, 0x100);  
+  return USBD_OK;
+}
+
+/**
+  * @brief  De-Initializes the Low Level portion of the Device driver.
+  * @param  pdev: Device handle
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_LL_DeInit (USBD_HandleTypeDef *pdev)
+{
+  HAL_StatusTypeDef hal_status = HAL_OK;
+  USBD_StatusTypeDef usb_status = USBD_OK;
+ 
+  hal_status = HAL_PCD_DeInit(pdev->pData);
+     
+  switch (hal_status) {
+    case HAL_OK :
+      usb_status = USBD_OK;
+    break;
+    case HAL_ERROR :
+      usb_status = USBD_FAIL;
+    break;
+    case HAL_BUSY :
+      usb_status = USBD_BUSY;
+    break;
+    case HAL_TIMEOUT :
+      usb_status = USBD_FAIL;
+    break;
+    default :
+      usb_status = USBD_FAIL;
+    break;
+  }
+  return usb_status; 
+}
+
+/**
+  * @brief  Starts the Low Level portion of the Device driver. 
+  * @param  pdev: Device handle
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_LL_Start(USBD_HandleTypeDef *pdev)
+{
+  HAL_StatusTypeDef hal_status = HAL_OK;
+  USBD_StatusTypeDef usb_status = USBD_OK;
+ 
+  hal_status = HAL_PCD_Start(pdev->pData);
+     
+  switch (hal_status) {
+    case HAL_OK :
+      usb_status = USBD_OK;
+    break;
+    case HAL_ERROR :
+      usb_status = USBD_FAIL;
+    break;
+    case HAL_BUSY :
+      usb_status = USBD_BUSY;
+    break;
+    case HAL_TIMEOUT :
+      usb_status = USBD_FAIL;
+    break;
+    default :
+      usb_status = USBD_FAIL;
+    break;
+  }
+  return usb_status;  
+}
+
+/**
+  * @brief  Stops the Low Level portion of the Device driver.
+  * @param  pdev: Device handle
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_LL_Stop (USBD_HandleTypeDef *pdev)
+{
+  HAL_StatusTypeDef hal_status = HAL_OK;
+  USBD_StatusTypeDef usb_status = USBD_OK;
+ 
+  hal_status = HAL_PCD_Stop(pdev->pData);
+     
+  switch (hal_status) {
+    case HAL_OK :
+      usb_status = USBD_OK;
+    break;
+    case HAL_ERROR :
+      usb_status = USBD_FAIL;
+    break;
+    case HAL_BUSY :
+      usb_status = USBD_BUSY;
+    break;
+    case HAL_TIMEOUT :
+      usb_status = USBD_FAIL;
+    break;
+    default :
+      usb_status = USBD_FAIL;
+    break;
+  }
+  return usb_status; 
+}
+
+/**
+  * @brief  Opens an endpoint of the Low Level Driver.
+  * @param  pdev: Device handle
+  * @param  ep_addr: Endpoint Number
+  * @param  ep_type: Endpoint Type
+  * @param  ep_mps: Endpoint Max Packet Size
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_LL_OpenEP  (USBD_HandleTypeDef *pdev, 
+                                      uint8_t  ep_addr,                                      
+                                      uint8_t  ep_type,
+                                      uint16_t ep_mps)
+{
+  HAL_StatusTypeDef hal_status = HAL_OK;
+  USBD_StatusTypeDef usb_status = USBD_OK;
+
+  hal_status = HAL_PCD_EP_Open(pdev->pData, 
+                               ep_addr, 
+                               ep_mps, 
+                               ep_type);
+  
+     
+  switch (hal_status) {
+    case HAL_OK :
+      usb_status = USBD_OK;
+    break;
+    case HAL_ERROR :
+      usb_status = USBD_FAIL;
+    break;
+    case HAL_BUSY :
+      usb_status = USBD_BUSY;
+    break;
+    case HAL_TIMEOUT :
+      usb_status = USBD_FAIL;
+    break;
+    default :
+      usb_status = USBD_FAIL;
+    break;
+  }
+  return usb_status; 
+}
+
+/**
+  * @brief  Closes an endpoint of the Low Level Driver.
+  * @param  pdev: Device handle
+  * @param  ep_addr: Endpoint Number
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_LL_CloseEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr)   
+{
+  HAL_StatusTypeDef hal_status = HAL_OK;
+  USBD_StatusTypeDef usb_status = USBD_OK;
+  
+  hal_status = HAL_PCD_EP_Close(pdev->pData, ep_addr);
+      
+  switch (hal_status) {
+    case HAL_OK :
+      usb_status = USBD_OK;
+    break;
+    case HAL_ERROR :
+      usb_status = USBD_FAIL;
+    break;
+    case HAL_BUSY :
+      usb_status = USBD_BUSY;
+    break;
+    case HAL_TIMEOUT :
+      usb_status = USBD_FAIL;
+    break;
+    default :
+      usb_status = USBD_FAIL;
+    break;
+  }
+  return usb_status;  
+}
+
+/**
+  * @brief  Flushes an endpoint of the Low Level Driver.
+  * @param  pdev: Device handle
+  * @param  ep_addr: Endpoint Number
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_LL_FlushEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr)   
+{
+  HAL_StatusTypeDef hal_status = HAL_OK;
+  USBD_StatusTypeDef usb_status = USBD_OK;
+  
+  hal_status = HAL_PCD_EP_Flush(pdev->pData, ep_addr);
+      
+  switch (hal_status) {
+    case HAL_OK :
+      usb_status = USBD_OK;
+    break;
+    case HAL_ERROR :
+      usb_status = USBD_FAIL;
+    break;
+    case HAL_BUSY :
+      usb_status = USBD_BUSY;
+    break;
+    case HAL_TIMEOUT :
+      usb_status = USBD_FAIL;
+    break;
+    default :
+      usb_status = USBD_FAIL;
+    break;
+  }
+  return usb_status;  
+}
+
+/**
+  * @brief  Sets a Stall condition on an endpoint of the Low Level Driver.
+  * @param  pdev: Device handle
+  * @param  ep_addr: Endpoint Number
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_LL_StallEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr)   
+{
+  HAL_StatusTypeDef hal_status = HAL_OK;
+  USBD_StatusTypeDef usb_status = USBD_OK;
+  
+  hal_status = HAL_PCD_EP_SetStall(pdev->pData, ep_addr);
+      
+  switch (hal_status) {
+    case HAL_OK :
+      usb_status = USBD_OK;
+    break;
+    case HAL_ERROR :
+      usb_status = USBD_FAIL;
+    break;
+    case HAL_BUSY :
+      usb_status = USBD_BUSY;
+    break;
+    case HAL_TIMEOUT :
+      usb_status = USBD_FAIL;
+    break;
+    default :
+      usb_status = USBD_FAIL;
+    break;
+  }
+  return usb_status;  
+}
+
+/**
+  * @brief  Clears a Stall condition on an endpoint of the Low Level Driver.
+  * @param  pdev: Device handle
+  * @param  ep_addr: Endpoint Number
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_LL_ClearStallEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr)   
+{
+  HAL_StatusTypeDef hal_status = HAL_OK;
+  USBD_StatusTypeDef usb_status = USBD_OK;
+  
+  hal_status = HAL_PCD_EP_ClrStall(pdev->pData, ep_addr);  
+     
+  switch (hal_status) {
+    case HAL_OK :
+      usb_status = USBD_OK;
+    break;
+    case HAL_ERROR :
+      usb_status = USBD_FAIL;
+    break;
+    case HAL_BUSY :
+      usb_status = USBD_BUSY;
+    break;
+    case HAL_TIMEOUT :
+      usb_status = USBD_FAIL;
+    break;
+    default :
+      usb_status = USBD_FAIL;
+    break;
+  }
+  return usb_status; 
+}
+
+/**
+  * @brief  Returns Stall condition.
+  * @param  pdev: Device handle
+  * @param  ep_addr: Endpoint Number
+  * @retval Stall (1: Yes, 0: No)
+  */
+uint8_t USBD_LL_IsStallEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr)   
+{
+  PCD_HandleTypeDef *hpcd = (PCD_HandleTypeDef*) pdev->pData;
+  
+  if((ep_addr & 0x80) == 0x80)
+  {
+    return hpcd->IN_ep[ep_addr & 0x7F].is_stall; 
+  }
+  else
+  {
+    return hpcd->OUT_ep[ep_addr & 0x7F].is_stall; 
+  }
+}
+/**
+  * @brief  Assigns a USB address to the device.
+  * @param  pdev: Device handle
+  * @param  ep_addr: Endpoint Number
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_LL_SetUSBAddress (USBD_HandleTypeDef *pdev, uint8_t dev_addr)   
+{
+  HAL_StatusTypeDef hal_status = HAL_OK;
+  USBD_StatusTypeDef usb_status = USBD_OK;
+  
+  hal_status = HAL_PCD_SetAddress(pdev->pData, dev_addr);
+     
+  switch (hal_status) {
+    case HAL_OK :
+      usb_status = USBD_OK;
+    break;
+    case HAL_ERROR :
+      usb_status = USBD_FAIL;
+    break;
+    case HAL_BUSY :
+      usb_status = USBD_BUSY;
+    break;
+    case HAL_TIMEOUT :
+      usb_status = USBD_FAIL;
+    break;
+    default :
+      usb_status = USBD_FAIL;
+    break;
+  }
+  return usb_status;  
+}
+
+/**
+  * @brief  Transmits data over an endpoint.
+  * @param  pdev: Device handle
+  * @param  ep_addr: Endpoint Number
+  * @param  pbuf: Pointer to data to be sent
+  * @param  size: Data size    
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_LL_Transmit (USBD_HandleTypeDef *pdev, 
+                                      uint8_t  ep_addr,                                      
+                                      uint8_t  *pbuf,
+                                      uint16_t  size)
+{
+  HAL_StatusTypeDef hal_status = HAL_OK;
+  USBD_StatusTypeDef usb_status = USBD_OK;
+
+  hal_status = HAL_PCD_EP_Transmit(pdev->pData, ep_addr, pbuf, size);
+     
+  switch (hal_status) {
+    case HAL_OK :
+      usb_status = USBD_OK;
+    break;
+    case HAL_ERROR :
+      usb_status = USBD_FAIL;
+    break;
+    case HAL_BUSY :
+      usb_status = USBD_BUSY;
+    break;
+    case HAL_TIMEOUT :
+      usb_status = USBD_FAIL;
+    break;
+    default :
+      usb_status = USBD_FAIL;
+    break;
+  }
+  return usb_status;    
+}
+
+/**
+  * @brief  Prepares an endpoint for reception.
+  * @param  pdev: Device handle
+  * @param  ep_addr: Endpoint Number
+  * @param  pbuf: Pointer to data to be received
+  * @param  size: Data size
+  * @retval USBD Status
+  */
+USBD_StatusTypeDef  USBD_LL_PrepareReceive(USBD_HandleTypeDef *pdev, 
+                                           uint8_t  ep_addr,                                      
+                                           uint8_t  *pbuf,
+                                           uint16_t  size)
+{
+  HAL_StatusTypeDef hal_status = HAL_OK;
+  USBD_StatusTypeDef usb_status = USBD_OK;
+
+  hal_status = HAL_PCD_EP_Receive(pdev->pData, ep_addr, pbuf, size);
+     
+  switch (hal_status) {
+    case HAL_OK :
+      usb_status = USBD_OK;
+    break;
+    case HAL_ERROR :
+      usb_status = USBD_FAIL;
+    break;
+    case HAL_BUSY :
+      usb_status = USBD_BUSY;
+    break;
+    case HAL_TIMEOUT :
+      usb_status = USBD_FAIL;
+    break;
+    default :
+      usb_status = USBD_FAIL;
+    break;
+  }
+  return usb_status; 
+}
+
+/**
+  * @brief  Returns the last transfered packet size.
+  * @param  pdev: Device handle
+  * @param  ep_addr: Endpoint Number
+  * @retval Recived Data Size
+  */
+uint32_t USBD_LL_GetRxDataSize  (USBD_HandleTypeDef *pdev, uint8_t  ep_addr)  
+{
+  return HAL_PCD_EP_GetRxCount((PCD_HandleTypeDef*) pdev->pData, ep_addr);
+}
+
+/**
+  * @brief  Delays routine for the USB Device Library.
+  * @param  Delay: Delay in ms
+  * @retval None
+  */
+void  USBD_LL_Delay (uint32_t Delay)
+{
+  HAL_Delay(Delay);  
+}
+
+/**
+  * @brief  static single allocation.
+  * @param  size: size of allocated memory
+  * @retval None
+  */
+void *USBD_static_malloc(uint32_t size)
+{
+  static uint32_t mem[(sizeof(USBD_CDC_HandleTypeDef)/4)+1];/* On 32-bit boundary */
+  return mem;
+}
+
+/**
+  * @brief  Dummy memory free
+  * @param  *p pointer to allocated  memory address
+  * @retval None
+  */
+void USBD_static_free(void *p)
+{
+
+}
+
+/**
+* @brief Software Device Connection
+* @param hpcd: PCD handle
+* @param state: connection state (0 : disconnected / 1: connected) 
+* @retval None
+*/
+void HAL_PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state)
+{
+/* USER CODE BEGIN 5 */
+  if (state == 1)
+  {
+    /* Configure Low Connection State */
+	
+  }
+  else
+  {
+    /* Configure High Connection State */
+   
+  } 
+/* USER CODE END 5 */
+}
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/Src/usbd_desc.c b/stm32cubemx/Src/usbd_desc.c
new file mode 100644
index 0000000..b153354
--- /dev/null
+++ b/stm32cubemx/Src/usbd_desc.c
@@ -0,0 +1,307 @@
+/**
+  ******************************************************************************
+  * @file           : usbd_desc.c
+  * @version        : v2.0_Cube
+  * @brief          : This file implements the USB Device descriptors
+  ******************************************************************************
+  *
+  * Copyright (c) 2017 STMicroelectronics International N.V. 
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+*/
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_core.h"
+#include "usbd_desc.h"
+#include "usbd_conf.h"
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+  * @{
+  */
+
+/** @defgroup USBD_DESC 
+  * @brief USBD descriptors module
+  * @{
+  */ 
+
+/** @defgroup USBD_DESC_Private_TypesDefinitions
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_DESC_Private_Defines
+  * @{
+  */ 
+#define USBD_VID     1155
+#define USBD_LANGID_STRING     1033
+#define USBD_MANUFACTURER_STRING     "STMicroelectronics"
+#define USBD_PID_FS     22336
+#define USBD_PRODUCT_STRING_FS     "STM32 Virtual ComPort"
+#define USBD_SERIALNUMBER_STRING_FS     "00000000001A"
+#define USBD_CONFIGURATION_STRING_FS     "CDC Config"
+#define USBD_INTERFACE_STRING_FS     "CDC Interface"
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0*/
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_DESC_Private_Macros
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_DESC_Private_Variables
+  * @{
+  */ 
+uint8_t *     USBD_FS_DeviceDescriptor( USBD_SpeedTypeDef speed , uint16_t *length);
+uint8_t *     USBD_FS_LangIDStrDescriptor( USBD_SpeedTypeDef speed , uint16_t *length);
+uint8_t *     USBD_FS_ManufacturerStrDescriptor ( USBD_SpeedTypeDef speed , uint16_t *length);
+uint8_t *     USBD_FS_ProductStrDescriptor ( USBD_SpeedTypeDef speed , uint16_t *length);
+uint8_t *     USBD_FS_SerialStrDescriptor( USBD_SpeedTypeDef speed , uint16_t *length);
+uint8_t *     USBD_FS_ConfigStrDescriptor( USBD_SpeedTypeDef speed , uint16_t *length);
+uint8_t *     USBD_FS_InterfaceStrDescriptor( USBD_SpeedTypeDef speed , uint16_t *length);
+
+#ifdef USB_SUPPORT_USER_STRING_DESC
+uint8_t *     USBD_FS_USRStringDesc (USBD_SpeedTypeDef speed, uint8_t idx , uint16_t *length);  
+#endif /* USB_SUPPORT_USER_STRING_DESC */  
+
+USBD_DescriptorsTypeDef FS_Desc =
+{
+  USBD_FS_DeviceDescriptor,
+  USBD_FS_LangIDStrDescriptor, 
+  USBD_FS_ManufacturerStrDescriptor,
+  USBD_FS_ProductStrDescriptor,
+  USBD_FS_SerialStrDescriptor,
+  USBD_FS_ConfigStrDescriptor,
+  USBD_FS_InterfaceStrDescriptor,
+};
+
+#if defined ( __ICCARM__ ) /*!< IAR Compiler */
+  #pragma data_alignment=4   
+#endif
+/* USB Standard Device Descriptor */
+__ALIGN_BEGIN uint8_t USBD_FS_DeviceDesc[USB_LEN_DEV_DESC] __ALIGN_END =
+  {
+    0x12,                       /*bLength */
+    USB_DESC_TYPE_DEVICE,       /*bDescriptorType*/
+    0x00,                       /* bcdUSB */  
+    0x02,
+    0x02,                        /*bDeviceClass*/
+    0x02,                       /*bDeviceSubClass*/
+    0x00,                       /*bDeviceProtocol*/
+    USB_MAX_EP0_SIZE,          /*bMaxPacketSize*/
+    LOBYTE(USBD_VID),           /*idVendor*/
+    HIBYTE(USBD_VID),           /*idVendor*/
+    LOBYTE(USBD_PID_FS),           /*idVendor*/
+    HIBYTE(USBD_PID_FS),           /*idVendor*/
+    0x00,                       /*bcdDevice rel. 2.00*/
+    0x02,
+    USBD_IDX_MFC_STR,           /*Index of manufacturer  string*/
+    USBD_IDX_PRODUCT_STR,       /*Index of product string*/
+    USBD_IDX_SERIAL_STR,        /*Index of serial number string*/
+    USBD_MAX_NUM_CONFIGURATION  /*bNumConfigurations*/
+  } ; 
+/* USB_DeviceDescriptor */
+
+#if defined ( __ICCARM__ ) /*!< IAR Compiler */
+  #pragma data_alignment=4   
+#endif
+
+/* USB Standard Device Descriptor */
+__ALIGN_BEGIN uint8_t USBD_LangIDDesc[USB_LEN_LANGID_STR_DESC] __ALIGN_END =
+{
+     USB_LEN_LANGID_STR_DESC,         
+     USB_DESC_TYPE_STRING,       
+     LOBYTE(USBD_LANGID_STRING),
+     HIBYTE(USBD_LANGID_STRING), 
+};
+
+#if defined ( __ICCARM__ ) /*!< IAR Compiler */
+  #pragma data_alignment=4   
+#endif
+__ALIGN_BEGIN uint8_t USBD_StrDesc[USBD_MAX_STR_DESC_SIZ] __ALIGN_END;
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_DESC_Private_FunctionPrototypes
+  * @{
+  */ 
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_DESC_Private_Functions
+  * @{
+  */ 
+
+/**
+* @brief  USBD_FS_DeviceDescriptor 
+*         return the device descriptor
+* @param  speed : current device speed
+* @param  length : pointer to data length variable
+* @retval pointer to descriptor buffer
+*/
+uint8_t *  USBD_FS_DeviceDescriptor( USBD_SpeedTypeDef speed , uint16_t *length)
+{
+  *length = sizeof(USBD_FS_DeviceDesc);
+  return USBD_FS_DeviceDesc;
+}
+
+/**
+* @brief  USBD_FS_LangIDStrDescriptor 
+*         return the LangID string descriptor
+* @param  speed : current device speed
+* @param  length : pointer to data length variable
+* @retval pointer to descriptor buffer
+*/
+uint8_t *  USBD_FS_LangIDStrDescriptor( USBD_SpeedTypeDef speed , uint16_t *length)
+{
+  *length =  sizeof(USBD_LangIDDesc);  
+  return USBD_LangIDDesc;
+}
+
+/**
+* @brief  USBD_FS_ProductStrDescriptor 
+*         return the product string descriptor
+* @param  speed : current device speed
+* @param  length : pointer to data length variable
+* @retval pointer to descriptor buffer
+*/
+uint8_t *  USBD_FS_ProductStrDescriptor( USBD_SpeedTypeDef speed , uint16_t *length)
+{
+  if(speed == 0)
+  {   
+    USBD_GetString (USBD_PRODUCT_STRING_FS, USBD_StrDesc, length);
+  }
+  else
+  {
+    USBD_GetString (USBD_PRODUCT_STRING_FS, USBD_StrDesc, length);    
+  }
+  return USBD_StrDesc;
+}
+
+/**
+* @brief  USBD_FS_ManufacturerStrDescriptor 
+*         return the manufacturer string descriptor
+* @param  speed : current device speed
+* @param  length : pointer to data length variable
+* @retval pointer to descriptor buffer
+*/
+uint8_t *  USBD_FS_ManufacturerStrDescriptor( USBD_SpeedTypeDef speed , uint16_t *length)
+{
+  USBD_GetString (USBD_MANUFACTURER_STRING, USBD_StrDesc, length);
+  return USBD_StrDesc;
+}
+
+/**
+* @brief  USBD_FS_SerialStrDescriptor 
+*         return the serial number string descriptor
+* @param  speed : current device speed
+* @param  length : pointer to data length variable
+* @retval pointer to descriptor buffer
+*/
+uint8_t *  USBD_FS_SerialStrDescriptor( USBD_SpeedTypeDef speed , uint16_t *length)
+{
+  if(speed  == USBD_SPEED_HIGH)
+  {    
+    USBD_GetString (USBD_SERIALNUMBER_STRING_FS, USBD_StrDesc, length);
+  }
+  else
+  {
+    USBD_GetString (USBD_SERIALNUMBER_STRING_FS, USBD_StrDesc, length);    
+  }
+  return USBD_StrDesc;
+}
+
+/**
+* @brief  USBD_FS_ConfigStrDescriptor 
+*         return the configuration string descriptor
+* @param  speed : current device speed
+* @param  length : pointer to data length variable
+* @retval pointer to descriptor buffer
+*/
+uint8_t *  USBD_FS_ConfigStrDescriptor( USBD_SpeedTypeDef speed , uint16_t *length)
+{
+  if(speed  == USBD_SPEED_HIGH)
+  {  
+    USBD_GetString (USBD_CONFIGURATION_STRING_FS, USBD_StrDesc, length);
+  }
+  else
+  {
+    USBD_GetString (USBD_CONFIGURATION_STRING_FS, USBD_StrDesc, length); 
+  }
+  return USBD_StrDesc;  
+}
+
+/**
+* @brief  USBD_HS_InterfaceStrDescriptor 
+*         return the interface string descriptor
+* @param  speed : current device speed
+* @param  length : pointer to data length variable
+* @retval pointer to descriptor buffer
+*/
+uint8_t *  USBD_FS_InterfaceStrDescriptor( USBD_SpeedTypeDef speed , uint16_t *length)
+{
+  if(speed == 0)
+  {
+    USBD_GetString (USBD_INTERFACE_STRING_FS, USBD_StrDesc, length);
+  }
+  else
+  {
+    USBD_GetString (USBD_INTERFACE_STRING_FS, USBD_StrDesc, length);
+  }
+  return USBD_StrDesc;  
+}
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/stm32cubemx/stm32cubemx.gpdsc b/stm32cubemx/stm32cubemx.gpdsc
index c42a5f0..78b101c 100644
--- a/stm32cubemx/stm32cubemx.gpdsc
+++ b/stm32cubemx/stm32cubemx.gpdsc
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <!-- ******************************************************************************
  * File Name   : stm32cubemx.gpdsc
- * Date        : 29/04/2017 23:09:40
+ * Date        : 30/04/2017 20:16:12
  * Description : Generator PDSC File generated by STM32CubeMX (DO NOT EDIT!)
  ****************************************************************************** -->
 
@@ -12,7 +12,7 @@
   <url>/home/trygvis/dev/io.trygvis/2017/04/433-controller/stm32cubemx</url>
   <releases>
     <release version="1.0.0">
-     - Generated: 29/04/2017 23:09:40
+     - Generated: 30/04/2017 20:16:12
     </release>
   </releases>
   <requirements>
@@ -35,9 +35,17 @@
       <description>STM32CubeMX GPDSC</description>
       <select Dname="STM32F103C6Tx" Dvendor="STMicroelectronics:13"/>
       <project_files>
+        <file category="header" name="Inc/usb_device.h"/>
+        <file category="header" name="Inc/usbd_conf.h"/>
+        <file category="header" name="Inc/usbd_desc.h"/>
+        <file category="header" name="Inc/usbd_cdc_if.h"/>
         <file category="header" name="Inc/stm32f1xx_it.h"/>
         <file category="header" name="Inc/stm32f1xx_hal_conf.h"/>
         <file category="header" name="Inc/main.h"/>
+        <file category="source" name="Src/usb_device.c"/>
+        <file category="source" name="Src/usbd_conf.c"/>
+        <file category="source" name="Src/usbd_desc.c"/>
+        <file category="source" name="Src/usbd_cdc_if.c"/>
         <file category="source" name="Src/stm32f1xx_it.c"/>
         <file category="source" name="Src/stm32f1xx_hal_msp.c"/>
         <file category="source" name="Src/main.c"/>
@@ -86,11 +94,15 @@
         <file category="sourceC" name="Drivers\STM32F1xx_HAL_Driver\Src\stm32f1xx_hal.c"/>
       </files>
     </component>
-    <component Cclass="Device" Cgroup="STM32Cube HAL" Csub="IWDG" Cversion="0.1.0">
+    <component Cclass="Device" Cgroup="STM32Cube HAL" Csub="PCD" Cversion="1.0.1">
       <description></description>
       <files>
-        <file category="header" name="Drivers\STM32F1xx_HAL_Driver\Inc\stm32f1xx_hal_iwdg.h"/>
-        <file category="source" name="Drivers\STM32F1xx_HAL_Driver\Src\stm32f1xx_hal_iwdg.c"/>
+        <file category="header" name="Drivers\STM32F1xx_HAL_Driver\Inc\stm32f1xx_hal_pcd.h"/>
+        <file category="header" name="Drivers\STM32F1xx_HAL_Driver\Inc\stm32f1xx_hal_pcd_ex.h"/>
+        <file category="header" name="Drivers\STM32F1xx_HAL_Driver\Inc\stm32f1xx_ll_usb.h"/>
+        <file category="source" name="Drivers\STM32F1xx_HAL_Driver\Src\stm32f1xx_hal_pcd.c"/>
+        <file category="source" name="Drivers\STM32F1xx_HAL_Driver\Src\stm32f1xx_hal_pcd_ex.c"/>
+        <file category="source" name="Drivers\STM32F1xx_HAL_Driver\Src\stm32f1xx_ll_usb.c"/>
       </files>
     </component>
     <component Cclass="Device" Cgroup="STM32Cube HAL" Csub="RCC" Cversion="0.3.0">
@@ -160,5 +172,19 @@
         <file category="header" name="Drivers\STM32F1xx_HAL_Driver\Src\stm32f1xx_hal_gpio_ex.c"/>
       </files>
     </component>
+    <component Cclass="Device" Cgroup="STM32Cube HAL" Csub="USB_DEVICE" Cversion="V2.4.2">
+      <description></description>
+      <files>
+        <file category="header" name="Middlewares\ST\STM32_USB_Device_Library\Core\Inc\usbd_core.h"/>
+        <file category="header" name="Middlewares\ST\STM32_USB_Device_Library\Core\Inc\usbd_ctlreq.h"/>
+        <file category="header" name="Middlewares\ST\STM32_USB_Device_Library\Core\Inc\usbd_def.h"/>
+        <file category="header" name="Middlewares\ST\STM32_USB_Device_Library\Core\Inc\usbd_ioreq.h"/>
+        <file category="source" name="Middlewares\ST\STM32_USB_Device_Library\Core\Src\usbd_core.c"/>
+        <file category="source" name="Middlewares\ST\STM32_USB_Device_Library\Core\Src\usbd_ctlreq.c"/>
+        <file category="source" name="Middlewares\ST\STM32_USB_Device_Library\Core\Src\usbd_ioreq.c"/>
+        <file category="header" name="Middlewares\ST\STM32_USB_Device_Library\Class\CDC\Inc\usbd_cdc.h"/>
+        <file category="source" name="Middlewares\ST\STM32_USB_Device_Library\Class\CDC\Src\usbd_cdc.c"/>
+      </files>
+    </component>
   </components>
 </package>
diff --git a/stm32cubemx/stm32cubemx.ioc b/stm32cubemx/stm32cubemx.ioc
index 461d8af..8f47fe6 100644
--- a/stm32cubemx/stm32cubemx.ioc
+++ b/stm32cubemx/stm32cubemx.ioc
@@ -14,25 +14,28 @@ File.Version=6
 KeepUserPlacement=false
 Mcu.Family=STM32F1
 Mcu.IP0=DMA
-Mcu.IP1=IWDG
-Mcu.IP2=NVIC
-Mcu.IP3=RCC
-Mcu.IP4=SYS
-Mcu.IP5=TIM1
-Mcu.IPNb=6
+Mcu.IP1=NVIC
+Mcu.IP2=RCC
+Mcu.IP3=SYS
+Mcu.IP4=TIM1
+Mcu.IP5=USB
+Mcu.IP6=USB_DEVICE
+Mcu.IPNb=7
 Mcu.Name=STM32F103C(4-6)Tx
 Mcu.Package=LQFP48
 Mcu.Pin0=PC14-OSC32_IN
 Mcu.Pin1=PC15-OSC32_OUT
+Mcu.Pin10=VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS
 Mcu.Pin2=PD0-OSC_IN
 Mcu.Pin3=PD1-OSC_OUT
 Mcu.Pin4=PA8
-Mcu.Pin5=PA13
-Mcu.Pin6=PA14
-Mcu.Pin7=VP_IWDG_VS_IWDG
-Mcu.Pin8=VP_SYS_VS_Systick
-Mcu.PinsNb=9
-Mcu.UserConstants=RX_TIMER_PRESCALER,72000000 / 2000
+Mcu.Pin5=PA11
+Mcu.Pin6=PA12
+Mcu.Pin7=PA13
+Mcu.Pin8=PA14
+Mcu.Pin9=VP_SYS_VS_Systick
+Mcu.PinsNb=11
+Mcu.UserConstants=RX_TIMER_PRESCALER,(72000000 / 2000)
 Mcu.UserName=STM32F103C6Tx
 MxCube.Version=4.20.1
 MxDb.Version=DB.4.0.200
@@ -47,7 +50,13 @@ NVIC.PriorityGroup=NVIC_PRIORITYGROUP_4
 NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true
 NVIC.SysTick_IRQn=true\:0\:0\:true\:false\:true
 NVIC.TIM1_TRG_COM_IRQn=true\:1\:0\:true\:true\:true\:1
+NVIC.USB_HP_CAN1_TX_IRQn=true\:0\:0\:false\:false\:true
+NVIC.USB_LP_CAN1_RX0_IRQn=true\:0\:0\:false\:false\:true
 NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true
+PA11.Mode=Device
+PA11.Signal=USB_DM
+PA12.Mode=Device
+PA12.Signal=USB_DP
 PA13.Mode=Serial_Wire
 PA13.Signal=SYS_JTMS-SWDIO
 PA14.Mode=Serial_Wire
@@ -94,7 +103,7 @@ ProjectManager.StackSize=0x400
 ProjectManager.TargetToolchain=Other Toolchains (GPDSC)
 ProjectManager.ToolChainLocation=
 ProjectManager.UnderRoot=false
-ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false-HAL,2-MX_DMA_Init-DMA-false-HAL,3-SystemClock_Config-RCC-false-HAL,4-MX_TIM1_Init-TIM1-false-HAL,5-MX_IWDG_Init-IWDG-false-HAL
+ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false-HAL,2-MX_DMA_Init-DMA-false-HAL,3-SystemClock_Config-RCC-false-HAL,4-MX_TIM1_Init-TIM1-false-HAL,5-MX_USB_DEVICE_Init-USB_DEVICE-false-HAL
 RCC.ADCFreqValue=36000000
 RCC.AHBFreq_Value=72000000
 RCC.APB1CLKDivider=RCC_HCLK_DIV2
@@ -105,7 +114,7 @@ RCC.APB2TimFreq_Value=72000000
 RCC.FCLKCortexFreq_Value=72000000
 RCC.FamilyName=M
 RCC.HCLKFreq_Value=72000000
-RCC.IPParameters=ADCFreqValue,AHBFreq_Value,APB1CLKDivider,APB1Freq_Value,APB1TimFreq_Value,APB2Freq_Value,APB2TimFreq_Value,FCLKCortexFreq_Value,FamilyName,HCLKFreq_Value,MCOFreq_Value,PLLCLKFreq_Value,PLLMCOFreq_Value,PLLMUL,PLLSourceVirtual,SYSCLKFreq_VALUE,SYSCLKSource,TimSysFreq_Value,USBFreq_Value,VCOOutput2Freq_Value
+RCC.IPParameters=ADCFreqValue,AHBFreq_Value,APB1CLKDivider,APB1Freq_Value,APB1TimFreq_Value,APB2Freq_Value,APB2TimFreq_Value,FCLKCortexFreq_Value,FamilyName,HCLKFreq_Value,MCOFreq_Value,PLLCLKFreq_Value,PLLMCOFreq_Value,PLLMUL,PLLSourceVirtual,SYSCLKFreq_VALUE,SYSCLKSource,TimSysFreq_Value,USBFreq_Value,USBPrescaler,VCOOutput2Freq_Value
 RCC.MCOFreq_Value=72000000
 RCC.PLLCLKFreq_Value=72000000
 RCC.PLLMCOFreq_Value=36000000
@@ -114,15 +123,20 @@ RCC.PLLSourceVirtual=RCC_PLLSOURCE_HSE
 RCC.SYSCLKFreq_VALUE=72000000
 RCC.SYSCLKSource=RCC_SYSCLKSOURCE_PLLCLK
 RCC.TimSysFreq_Value=72000000
-RCC.USBFreq_Value=72000000
+RCC.USBFreq_Value=48000000
+RCC.USBPrescaler=RCC_USBCLKSOURCE_PLL_DIV1_5
 RCC.VCOOutput2Freq_Value=8000000
 SH.S_TIM1_CH1.0=TIM1_CH1,Input_Capture1_from_TI1
 SH.S_TIM1_CH1.ConfNb=1
 TIM1.Channel-Input_Capture1_from_TI1=TIM_CHANNEL_1
 TIM1.IPParameters=Channel-Input_Capture1_from_TI1,Prescaler
 TIM1.Prescaler=RX_TIMER_PRESCALER
-VP_IWDG_VS_IWDG.Mode=IWDG_Activate
-VP_IWDG_VS_IWDG.Signal=IWDG_VS_IWDG
+USB_DEVICE.CLASS_NAME_FS=CDC
+USB_DEVICE.IPParameters=VirtualMode,VirtualModeFS,CLASS_NAME_FS
+USB_DEVICE.VirtualMode=Cdc
+USB_DEVICE.VirtualModeFS=Cdc_FS
 VP_SYS_VS_Systick.Mode=SysTick
 VP_SYS_VS_Systick.Signal=SYS_VS_Systick
+VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS.Mode=CDC_FS
+VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS.Signal=USB_DEVICE_VS_USB_DEVICE_CDC_FS
 board=stm32cubemx