213 lines
6.9 KiB
C
213 lines
6.9 KiB
C
|
/**
|
||
|
|
******************************************************************************
|
||
|
|
* @file stm32f7xx_ll_exti.c
|
||
|
|
* @author MCD Application Team
|
||
|
|
* @brief EXTI LL module driver.
|
||
|
|
******************************************************************************
|
||
|
|
* @attention
|
||
|
|
*
|
||
|
|
* Copyright (c) 2017 STMicroelectronics.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This software is licensed under terms that can be found in the LICENSE file
|
||
|
|
* in the root directory of this software component.
|
||
|
|
* If no LICENSE file comes with this software, it is provided AS-IS.
|
||
|
|
*
|
||
|
|
******************************************************************************
|
||
|
|
*/
|
||
|
|
#if defined(USE_FULL_LL_DRIVER)
|
||
|
|
|
||
|
|
/* Includes ------------------------------------------------------------------*/
|
||
|
|
#include "stm32f7xx_ll_exti.h"
|
||
|
|
#ifdef USE_FULL_ASSERT
|
||
|
|
#include "stm32_assert.h"
|
||
|
|
#else
|
||
|
|
#define assert_param(expr) ((void)0U)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/** @addtogroup STM32F7xx_LL_Driver
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if defined (EXTI)
|
||
|
|
|
||
|
|
/** @defgroup EXTI_LL EXTI
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Private types -------------------------------------------------------------*/
|
||
|
|
/* Private variables ---------------------------------------------------------*/
|
||
|
|
/* Private constants ---------------------------------------------------------*/
|
||
|
|
/* Private macros ------------------------------------------------------------*/
|
||
|
|
/** @addtogroup EXTI_LL_Private_Macros
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define IS_LL_EXTI_LINE_0_31(__VALUE__) (((__VALUE__) & ~LL_EXTI_LINE_ALL_0_31) == 0x00000000U)
|
||
|
|
|
||
|
|
#define IS_LL_EXTI_MODE(__VALUE__) (((__VALUE__) == LL_EXTI_MODE_IT) \
|
||
|
|
|| ((__VALUE__) == LL_EXTI_MODE_EVENT) \
|
||
|
|
|| ((__VALUE__) == LL_EXTI_MODE_IT_EVENT))
|
||
|
|
|
||
|
|
|
||
|
|
#define IS_LL_EXTI_TRIGGER(__VALUE__) (((__VALUE__) == LL_EXTI_TRIGGER_NONE) \
|
||
|
|
|| ((__VALUE__) == LL_EXTI_TRIGGER_RISING) \
|
||
|
|
|| ((__VALUE__) == LL_EXTI_TRIGGER_FALLING) \
|
||
|
|
|| ((__VALUE__) == LL_EXTI_TRIGGER_RISING_FALLING))
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Private function prototypes -----------------------------------------------*/
|
||
|
|
|
||
|
|
/* Exported functions --------------------------------------------------------*/
|
||
|
|
/** @addtogroup EXTI_LL_Exported_Functions
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** @addtogroup EXTI_LL_EF_Init
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief De-initialize the EXTI registers to their default reset values.
|
||
|
|
* @retval An ErrorStatus enumeration value:
|
||
|
|
* - SUCCESS: EXTI registers are de-initialized
|
||
|
|
* - ERROR: not applicable
|
||
|
|
*/
|
||
|
|
uint32_t LL_EXTI_DeInit(void)
|
||
|
|
{
|
||
|
|
/* Interrupt mask register set to default reset values */
|
||
|
|
LL_EXTI_WriteReg(IMR, 0x00000000U);
|
||
|
|
/* Event mask register set to default reset values */
|
||
|
|
LL_EXTI_WriteReg(EMR, 0x00000000U);
|
||
|
|
/* Rising Trigger selection register set to default reset values */
|
||
|
|
LL_EXTI_WriteReg(RTSR, 0x00000000U);
|
||
|
|
/* Falling Trigger selection register set to default reset values */
|
||
|
|
LL_EXTI_WriteReg(FTSR, 0x00000000U);
|
||
|
|
/* Software interrupt event register set to default reset values */
|
||
|
|
LL_EXTI_WriteReg(SWIER, 0x00000000U);
|
||
|
|
/* Pending register set to default reset values */
|
||
|
|
LL_EXTI_WriteReg(PR, 0x01FFFFFFU);
|
||
|
|
|
||
|
|
return SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Initialize the EXTI registers according to the specified parameters in EXTI_InitStruct.
|
||
|
|
* @param EXTI_InitStruct pointer to a @ref LL_EXTI_InitTypeDef structure.
|
||
|
|
* @retval An ErrorStatus enumeration value:
|
||
|
|
* - SUCCESS: EXTI registers are initialized
|
||
|
|
* - ERROR: not applicable
|
||
|
|
*/
|
||
|
|
uint32_t LL_EXTI_Init(LL_EXTI_InitTypeDef *EXTI_InitStruct)
|
||
|
|
{
|
||
|
|
ErrorStatus status = SUCCESS;
|
||
|
|
/* Check the parameters */
|
||
|
|
assert_param(IS_LL_EXTI_LINE_0_31(EXTI_InitStruct->Line_0_31));
|
||
|
|
assert_param(IS_FUNCTIONAL_STATE(EXTI_InitStruct->LineCommand));
|
||
|
|
assert_param(IS_LL_EXTI_MODE(EXTI_InitStruct->Mode));
|
||
|
|
|
||
|
|
/* ENABLE LineCommand */
|
||
|
|
if (EXTI_InitStruct->LineCommand != DISABLE)
|
||
|
|
{
|
||
|
|
assert_param(IS_LL_EXTI_TRIGGER(EXTI_InitStruct->Trigger));
|
||
|
|
|
||
|
|
/* Configure EXTI Lines in range from 0 to 31 */
|
||
|
|
if (EXTI_InitStruct->Line_0_31 != LL_EXTI_LINE_NONE)
|
||
|
|
{
|
||
|
|
switch (EXTI_InitStruct->Mode)
|
||
|
|
{
|
||
|
|
case LL_EXTI_MODE_IT:
|
||
|
|
/* First Disable Event on provided Lines */
|
||
|
|
LL_EXTI_DisableEvent_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
/* Then Enable IT on provided Lines */
|
||
|
|
LL_EXTI_EnableIT_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
break;
|
||
|
|
case LL_EXTI_MODE_EVENT:
|
||
|
|
/* First Disable IT on provided Lines */
|
||
|
|
LL_EXTI_DisableIT_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
/* Then Enable Event on provided Lines */
|
||
|
|
LL_EXTI_EnableEvent_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
break;
|
||
|
|
case LL_EXTI_MODE_IT_EVENT:
|
||
|
|
/* Directly Enable IT & Event on provided Lines */
|
||
|
|
LL_EXTI_EnableIT_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
LL_EXTI_EnableEvent_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
status = ERROR;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (EXTI_InitStruct->Trigger != LL_EXTI_TRIGGER_NONE)
|
||
|
|
{
|
||
|
|
switch (EXTI_InitStruct->Trigger)
|
||
|
|
{
|
||
|
|
case LL_EXTI_TRIGGER_RISING:
|
||
|
|
/* First Disable Falling Trigger on provided Lines */
|
||
|
|
LL_EXTI_DisableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
/* Then Enable Rising Trigger on provided Lines */
|
||
|
|
LL_EXTI_EnableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
break;
|
||
|
|
case LL_EXTI_TRIGGER_FALLING:
|
||
|
|
/* First Disable Rising Trigger on provided Lines */
|
||
|
|
LL_EXTI_DisableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
/* Then Enable Falling Trigger on provided Lines */
|
||
|
|
LL_EXTI_EnableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
break;
|
||
|
|
case LL_EXTI_TRIGGER_RISING_FALLING:
|
||
|
|
LL_EXTI_EnableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
LL_EXTI_EnableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
status = ERROR;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/* DISABLE LineCommand */
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* De-configure EXTI Lines in range from 0 to 31 */
|
||
|
|
LL_EXTI_DisableIT_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
LL_EXTI_DisableEvent_0_31(EXTI_InitStruct->Line_0_31);
|
||
|
|
}
|
||
|
|
return status;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Set each @ref LL_EXTI_InitTypeDef field to default value.
|
||
|
|
* @param EXTI_InitStruct Pointer to a @ref LL_EXTI_InitTypeDef structure.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
void LL_EXTI_StructInit(LL_EXTI_InitTypeDef *EXTI_InitStruct)
|
||
|
|
{
|
||
|
|
EXTI_InitStruct->Line_0_31 = LL_EXTI_LINE_NONE;
|
||
|
|
EXTI_InitStruct->LineCommand = DISABLE;
|
||
|
|
EXTI_InitStruct->Mode = LL_EXTI_MODE_IT;
|
||
|
|
EXTI_InitStruct->Trigger = LL_EXTI_TRIGGER_FALLING;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
#endif /* defined (EXTI) */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
#endif /* USE_FULL_LL_DRIVER */
|
||
|
|
|