aboutsummaryrefslogtreecommitdiff
path: root/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Libraries/STM32F30x_StdPeriph_Driver/src/stm32f30x_exti.c
diff options
context:
space:
mode:
Diffstat (limited to 'thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Libraries/STM32F30x_StdPeriph_Driver/src/stm32f30x_exti.c')
-rw-r--r--thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Libraries/STM32F30x_StdPeriph_Driver/src/stm32f30x_exti.c352
1 files changed, 352 insertions, 0 deletions
diff --git a/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Libraries/STM32F30x_StdPeriph_Driver/src/stm32f30x_exti.c b/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Libraries/STM32F30x_StdPeriph_Driver/src/stm32f30x_exti.c
new file mode 100644
index 0000000..885b0f2
--- /dev/null
+++ b/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Libraries/STM32F30x_StdPeriph_Driver/src/stm32f30x_exti.c
@@ -0,0 +1,352 @@
+/**
+ ******************************************************************************
+ * @file stm32f30x_exti.c
+ * @author MCD Application Team
+ * @version V1.0.1
+ * @date 23-October-2012
+ * @brief This file provides firmware functions to manage the following
+ * functionalities of the EXTI peripheral:
+ * + Initialization and Configuration
+ * + Interrupts and flags management
+ *
+ @verbatim
+ ===============================================================================
+ ##### EXTI features #####
+ ===============================================================================
+ [..] External interrupt/event lines are mapped as following:
+ (#) All available GPIO pins are connected to the 16 external
+ interrupt/event lines from EXTI0 to EXTI15.
+ (#) EXTI line 16 is connected to the PVD output
+ (#) EXTI line 17 is connected to the RTC Alarm event
+ (#) EXTI line 18 is connected to USB Device wakeup event
+ (#) EXTI line 19 is connected to the RTC Tamper and TimeStamp events
+ (#) EXTI line 20 is connected to the RTC wakeup event
+ (#) EXTI line 21 is connected to the Comparator 1 wakeup event
+ (#) EXTI line 22 is connected to the Comparator 2 wakeup event
+ (#) EXTI line 23 is connected to the I2C1 wakeup event
+ (#) EXTI line 24 is connected to the I2C2 wakeup event
+ (#) EXTI line 25 is connected to the USART1 wakeup event
+ (#) EXTI line 26 is connected to the USART2 wakeup event
+ (#) EXTI line 27 is reserved
+ (#) EXTI line 28 is connected to the USART3 wakeup event
+ (#) EXTI line 29 is connected to the Comparator 3 event
+ (#) EXTI line 30 is connected to the Comparator 4 event
+ (#) EXTI line 31 is connected to the Comparator 5 event
+ (#) EXTI line 32 is connected to the Comparator 6 event
+ (#) EXTI line 33 is connected to the Comparator 7 event
+ (#) EXTI line 34 is connected for thr UART4 wakeup event
+ (#) EXTI line 35 is connected for the UART5 wakeup event
+
+ ##### How to use this driver #####
+ ===============================================================================
+ [..] In order to use an I/O pin as an external interrupt source,
+ follow steps below:
+ (#) Configure the I/O in input mode using GPIO_Init().
+ (#) Select the input source pin for the EXTI line using
+ SYSCFG_EXTILineConfig().
+ (#) Select the mode(interrupt, event) and configure the trigger
+ selection (Rising, falling or both) using EXTI_Init(). For the
+ internal interrupt, the trigger selection is not needed
+ (the active edge is always the rising one).
+ (#) Configure NVIC IRQ channel mapped to the EXTI line using NVIC_Init().
+ (#) Optionally, you can generate a software interrupt using the function
+ EXTI_GenerateSWInterrupt().
+ [..]
+ (@) SYSCFG APB clock must be enabled to get write access to SYSCFG_EXTICRx
+ registers using RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
+
+ @endverbatim
+
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT 2012 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 "stm32f30x_exti.h"
+
+/** @addtogroup STM32F30x_StdPeriph_Driver
+ * @{
+ */
+
+/** @defgroup EXTI
+ * @brief EXTI driver modules
+ * @{
+ */
+
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+#define EXTI_LINENONE ((uint32_t)0x00000) /* No interrupt selected */
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup EXTI_Private_Functions
+ * @{
+ */
+
+/** @defgroup EXTI_Group1 Initialization and Configuration functions
+ * @brief Initialization and Configuration functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Initialization and Configuration functions #####
+ ===============================================================================
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Deinitializes the EXTI peripheral registers to their default reset
+ * values.
+ * @param None
+ * @retval None
+ */
+void EXTI_DeInit(void)
+{
+ EXTI->IMR = 0x1F800000;
+ EXTI->EMR = 0x00000000;
+ EXTI->RTSR = 0x00000000;
+ EXTI->FTSR = 0x00000000;
+ EXTI->SWIER = 0x00000000;
+ EXTI->PR = 0xE07FFFFF;
+ EXTI->IMR2 = 0x0000000C;
+ EXTI->EMR2 = 0x00000000;
+ EXTI->RTSR2 = 0x00000000;
+ EXTI->FTSR2 = 0x00000000;
+ EXTI->SWIER2 = 0x00000000;
+ EXTI->PR2 = 0x00000003;
+}
+
+/**
+ * @brief Initializes the EXTI peripheral according to the specified
+ * parameters in the EXTI_InitStruct.
+ * EXTI_Line specifies the EXTI line (EXTI0....EXTI35).
+ * EXTI_Mode specifies which EXTI line is used as interrupt or an event.
+ * EXTI_Trigger selects the trigger. When the trigger occurs, interrupt
+ * pending bit will be set.
+ * EXTI_LineCmd controls (Enable/Disable) the EXTI line.
+ * @param EXTI_InitStruct: pointer to a EXTI_InitTypeDef structure that
+ * contains the configuration information for the EXTI peripheral.
+ * @retval None
+ */
+
+
+void EXTI_Init(EXTI_InitTypeDef* EXTI_InitStruct)
+{
+ uint32_t tmp = 0;
+
+ /* Check the parameters */
+ assert_param(IS_EXTI_MODE(EXTI_InitStruct->EXTI_Mode));
+ assert_param(IS_EXTI_TRIGGER(EXTI_InitStruct->EXTI_Trigger));
+ assert_param(IS_EXTI_LINE_ALL(EXTI_InitStruct->EXTI_Line));
+ assert_param(IS_FUNCTIONAL_STATE(EXTI_InitStruct->EXTI_LineCmd));
+
+ tmp = (uint32_t)EXTI_BASE;
+
+ if (EXTI_InitStruct->EXTI_LineCmd != DISABLE)
+ {
+ /* Clear EXTI line configuration */
+ *(__IO uint32_t *) (((uint32_t) &(EXTI->IMR)) + ((EXTI_InitStruct->EXTI_Line) >> 5 ) * 0x20) &= ~(uint32_t)(1 << (EXTI_InitStruct->EXTI_Line & 0x1F));
+ *(__IO uint32_t *) (((uint32_t) &(EXTI->EMR)) + ((EXTI_InitStruct->EXTI_Line) >> 5 ) * 0x20) &= ~(uint32_t)(1 << (EXTI_InitStruct->EXTI_Line & 0x1F));
+
+ tmp += EXTI_InitStruct->EXTI_Mode + (((EXTI_InitStruct->EXTI_Line) >> 5 ) * 0x20);
+
+ *(__IO uint32_t *) tmp |= (uint32_t)(1 << (EXTI_InitStruct->EXTI_Line & 0x1F));
+
+ tmp = (uint32_t)EXTI_BASE;
+
+ /* Clear Rising Falling edge configuration */
+ *(__IO uint32_t *) (((uint32_t) &(EXTI->RTSR)) + ((EXTI_InitStruct->EXTI_Line) >> 5 ) * 0x20) &= ~(uint32_t)(1 << (EXTI_InitStruct->EXTI_Line & 0x1F));
+ *(__IO uint32_t *) (((uint32_t) &(EXTI->FTSR)) + ((EXTI_InitStruct->EXTI_Line) >> 5 ) * 0x20) &= ~(uint32_t)(1 << (EXTI_InitStruct->EXTI_Line & 0x1F));
+
+ /* Select the trigger for the selected interrupts */
+ if (EXTI_InitStruct->EXTI_Trigger == EXTI_Trigger_Rising_Falling)
+ {
+ /* Rising Falling edge */
+ *(__IO uint32_t *) (((uint32_t) &(EXTI->RTSR)) + ((EXTI_InitStruct->EXTI_Line) >> 5 ) * 0x20) |= (uint32_t)(1 << (EXTI_InitStruct->EXTI_Line & 0x1F));
+ *(__IO uint32_t *) (((uint32_t) &(EXTI->FTSR)) + ((EXTI_InitStruct->EXTI_Line) >> 5 ) * 0x20) |= (uint32_t)(1 << (EXTI_InitStruct->EXTI_Line & 0x1F));
+ }
+ else
+ {
+ tmp += EXTI_InitStruct->EXTI_Trigger + (((EXTI_InitStruct->EXTI_Line) >> 5 ) * 0x20);
+
+ *(__IO uint32_t *) tmp |= (uint32_t)(1 << (EXTI_InitStruct->EXTI_Line & 0x1F));
+ }
+ }
+
+ else
+ {
+ tmp += EXTI_InitStruct->EXTI_Mode + (((EXTI_InitStruct->EXTI_Line) >> 5 ) * 0x20);
+
+ /* Disable the selected external lines */
+ *(__IO uint32_t *) tmp &= ~(uint32_t)(1 << (EXTI_InitStruct->EXTI_Line & 0x1F));
+ }
+
+}
+
+/**
+ * @brief Fills each EXTI_InitStruct member with its reset value.
+ * @param EXTI_InitStruct: pointer to a EXTI_InitTypeDef structure which will
+ * be initialized.
+ * @retval None
+ */
+void EXTI_StructInit(EXTI_InitTypeDef* EXTI_InitStruct)
+{
+ EXTI_InitStruct->EXTI_Line = EXTI_LINENONE;
+ EXTI_InitStruct->EXTI_Mode = EXTI_Mode_Interrupt;
+ EXTI_InitStruct->EXTI_Trigger = EXTI_Trigger_Rising_Falling;
+ EXTI_InitStruct->EXTI_LineCmd = DISABLE;
+}
+
+/**
+ * @brief Generates a Software interrupt on selected EXTI line.
+ * @param EXTI_Line: specifies the EXTI line on which the software interrupt
+ * will be generated.
+ * This parameter can be any combination of EXTI_Linex where x can be (0..20).
+ * @retval None
+ */
+void EXTI_GenerateSWInterrupt(uint32_t EXTI_Line)
+{
+ /* Check the parameters */
+ assert_param(IS_EXTI_LINE_EXT(EXTI_Line));
+
+ *(__IO uint32_t *) (((uint32_t) &(EXTI->SWIER)) + ((EXTI_Line) >> 5 ) * 0x20) |= (uint32_t)(1 << (EXTI_Line & 0x1F));
+
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup EXTI_Group2 Interrupts and flags management functions
+ * @brief EXTI Interrupts and flags management functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Interrupts and flags management functions #####
+ ===============================================================================
+ [..]
+ This section provides functions allowing to configure the EXTI Interrupts
+ sources and check or clear the flags or pending bits status.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Checks whether the specified EXTI line flag is set or not.
+ * @param EXTI_Line: specifies the EXTI line flag to check.
+ * This parameter can be any combination of EXTI_Linex where x can be (0..20).
+ * @retval The new state of EXTI_Line (SET or RESET).
+ */
+FlagStatus EXTI_GetFlagStatus(uint32_t EXTI_Line)
+{
+ FlagStatus bitstatus = RESET;
+
+ /* Check the parameters */
+ assert_param(IS_GET_EXTI_LINE(EXTI_Line));
+
+ if ((*(__IO uint32_t *) (((uint32_t) &(EXTI->PR)) + ((EXTI_Line) >> 5 ) * 0x20)& (uint32_t)(1 << (EXTI_Line & 0x1F))) != (uint32_t)RESET)
+ {
+ bitstatus = SET;
+ }
+ else
+ {
+ bitstatus = RESET;
+ }
+ return bitstatus;
+}
+
+/**
+ * @brief Clears the EXTI's line pending flags.
+ * @param EXTI_Line: specifies the EXTI lines flags to clear.
+ * This parameter can be any combination of EXTI_Linex where x can be (0..20).
+ * @retval None
+ */
+void EXTI_ClearFlag(uint32_t EXTI_Line)
+{
+ /* Check the parameters */
+ assert_param(IS_EXTI_LINE_EXT(EXTI_Line));
+
+ *(__IO uint32_t *) (((uint32_t) &(EXTI->PR)) + ((EXTI_Line) >> 5 ) * 0x20) = (1 << (EXTI_Line & 0x1F));
+}
+
+/**
+ * @brief Checks whether the specified EXTI line is asserted or not.
+ * @param EXTI_Line: specifies the EXTI line to check.
+ * This parameter can be any combination of EXTI_Linex where x can be (0..20).
+ * @retval The new state of EXTI_Line (SET or RESET).
+ */
+ITStatus EXTI_GetITStatus(uint32_t EXTI_Line)
+{
+ ITStatus bitstatus = RESET;
+ uint32_t enablestatus = 0;
+
+ /* Check the parameters */
+ assert_param(IS_GET_EXTI_LINE(EXTI_Line));
+
+ enablestatus = *(__IO uint32_t *) (((uint32_t) &(EXTI->IMR)) + ((EXTI_Line) >> 5 ) * 0x20) & (uint32_t)(1 << (EXTI_Line & 0x1F));
+
+ if ( (((*(__IO uint32_t *) (((uint32_t) &(EXTI->PR)) + (((EXTI_Line) >> 5 ) * 0x20) )) & (uint32_t)(1 << (EXTI_Line & 0x1F))) != (uint32_t)RESET) && (enablestatus != (uint32_t)RESET))
+ {
+ bitstatus = SET;
+ }
+ else
+ {
+ bitstatus = RESET;
+ }
+ return bitstatus;
+
+}
+
+/**
+ * @brief Clears the EXTI's line pending bits.
+ * @param EXTI_Line: specifies the EXTI lines to clear.
+ * This parameter can be any combination of EXTI_Linex where x can be (0..20).
+ * @retval None
+ */
+void EXTI_ClearITPendingBit(uint32_t EXTI_Line)
+{
+ /* Check the parameters */
+ assert_param(IS_EXTI_LINE_EXT(EXTI_Line));
+
+ *(__IO uint32_t *) (((uint32_t) &(EXTI->PR)) + ((EXTI_Line) >> 5 ) * 0x20) = (1 << (EXTI_Line & 0x1F));
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-02 04:31:00 +0000