From b0f0d2e9ca18d8604225bed3c984e4cf1b4c4b3c Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Wed, 10 Feb 2016 20:31:09 +0100 Subject: Initial import --- .../src/stm32f10x_exti.c | 268 +++++++++++++++++++++ 1 file changed, 268 insertions(+) create mode 100644 Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_exti.c (limited to 'Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_exti.c') diff --git a/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_exti.c b/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_exti.c new file mode 100644 index 0000000..eae3253 --- /dev/null +++ b/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_exti.c @@ -0,0 +1,268 @@ +/** + ****************************************************************************** + * @file stm32f10x_exti.c + * @author MCD Application Team + * @version V3.3.0 + * @date 04/16/2010 + * @brief This file provides all the EXTI firmware functions. + ****************************************************************************** + * @copy + * + * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS + * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE + * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY + * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING + * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE + * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. + * + *

© COPYRIGHT 2010 STMicroelectronics

+ */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x_exti.h" + +/** @addtogroup STM32F10x_StdPeriph_Driver + * @{ + */ + +/** @defgroup EXTI + * @brief EXTI driver modules + * @{ + */ + +/** @defgroup EXTI_Private_TypesDefinitions + * @{ + */ + +/** + * @} + */ + +/** @defgroup EXTI_Private_Defines + * @{ + */ + +#define EXTI_LineNone ((uint32_t)0x00000) /* No interrupt selected */ + +/** + * @} + */ + +/** @defgroup EXTI_Private_Macros + * @{ + */ + +/** + * @} + */ + +/** @defgroup EXTI_Private_Variables + * @{ + */ + +/** + * @} + */ + +/** @defgroup EXTI_Private_FunctionPrototypes + * @{ + */ + +/** + * @} + */ + +/** @defgroup EXTI_Private_Functions + * @{ + */ + +/** + * @brief Deinitializes the EXTI peripheral registers to their default reset values. + * @param None + * @retval None + */ +void EXTI_DeInit(void) +{ + EXTI->IMR = 0x00000000; + EXTI->EMR = 0x00000000; + EXTI->RTSR = 0x00000000; + EXTI->FTSR = 0x00000000; + EXTI->PR = 0x000FFFFF; +} + +/** + * @brief Initializes the EXTI peripheral according to the specified + * parameters in the EXTI_InitStruct. + * @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(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 */ + EXTI->IMR &= ~EXTI_InitStruct->EXTI_Line; + EXTI->EMR &= ~EXTI_InitStruct->EXTI_Line; + + tmp += EXTI_InitStruct->EXTI_Mode; + + *(__IO uint32_t *) tmp |= EXTI_InitStruct->EXTI_Line; + + /* Clear Rising Falling edge configuration */ + EXTI->RTSR &= ~EXTI_InitStruct->EXTI_Line; + EXTI->FTSR &= ~EXTI_InitStruct->EXTI_Line; + + /* Select the trigger for the selected external interrupts */ + if (EXTI_InitStruct->EXTI_Trigger == EXTI_Trigger_Rising_Falling) + { + /* Rising Falling edge */ + EXTI->RTSR |= EXTI_InitStruct->EXTI_Line; + EXTI->FTSR |= EXTI_InitStruct->EXTI_Line; + } + else + { + tmp = (uint32_t)EXTI_BASE; + tmp += EXTI_InitStruct->EXTI_Trigger; + + *(__IO uint32_t *) tmp |= EXTI_InitStruct->EXTI_Line; + } + } + else + { + tmp += EXTI_InitStruct->EXTI_Mode; + + /* Disable the selected external lines */ + *(__IO uint32_t *) tmp &= ~EXTI_InitStruct->EXTI_Line; + } +} + +/** + * @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_Falling; + EXTI_InitStruct->EXTI_LineCmd = DISABLE; +} + +/** + * @brief Generates a Software interrupt. + * @param EXTI_Line: specifies the EXTI lines to be enabled or disabled. + * This parameter can be any combination of EXTI_Linex where x can be (0..19). + * @retval None + */ +void EXTI_GenerateSWInterrupt(uint32_t EXTI_Line) +{ + /* Check the parameters */ + assert_param(IS_EXTI_LINE(EXTI_Line)); + + EXTI->SWIER |= EXTI_Line; +} + +/** + * @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: + * @arg EXTI_Linex: External interrupt line x where x(0..19) + * @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 ((EXTI->PR & EXTI_Line) != (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..19). + * @retval None + */ +void EXTI_ClearFlag(uint32_t EXTI_Line) +{ + /* Check the parameters */ + assert_param(IS_EXTI_LINE(EXTI_Line)); + + EXTI->PR = EXTI_Line; +} + +/** + * @brief Checks whether the specified EXTI line is asserted or not. + * @param EXTI_Line: specifies the EXTI line to check. + * This parameter can be: + * @arg EXTI_Linex: External interrupt line x where x(0..19) + * @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 = EXTI->IMR & EXTI_Line; + if (((EXTI->PR & EXTI_Line) != (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..19). + * @retval None + */ +void EXTI_ClearITPendingBit(uint32_t EXTI_Line) +{ + /* Check the parameters */ + assert_param(IS_EXTI_LINE(EXTI_Line)); + + EXTI->PR = EXTI_Line; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3