o Lots of work, IC not really working. Almost there.

2 files changed, 659 insertions, 0 deletions

diff --git a/bsp/radio-controller-1/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_iwdg.h b/bsp/radio-controller-1/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_iwdg.h
new file mode 100644
index 0000000..86a7f5a
--- /dev/null
+++ b/bsp/radio-controller-1/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_iwdg.h
@@ -0,0 +1,299 @@
+/**
+  ******************************************************************************
+  * @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/bsp/radio-controller-1/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c b/bsp/radio-controller-1/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c
new file mode 100644
index 0000000..f867c7c
--- /dev/null
+++ b/bsp/radio-controller-1/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c
@@ -0,0 +1,360 @@
+/**
+  ******************************************************************************
+  * @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****/