/** | |
****************************************************************************** | |
* @file stm32f7xx_ll_exti.c | |
* @author MCD Application Team | |
* @brief EXTI LL module driver. | |
****************************************************************************** | |
* @attention | |
* | |
* <h2><center>© COPYRIGHT(c) 2017 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. | |
* | |
****************************************************************************** | |
*/ | |
#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 */ | |
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |