Sigve Sebastian Farstad / mbed-src

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targets/cmsis/TARGET_STM/TARGET_NUCLEO_F030R8/stm32f0xx_exti.c@250:3424e7e3604b, 2014-07-17 (annotated)

Committer:
sigveseb
Date:
Thu Jul 17 14:16:03 2014 +0000
Revision:
250:3424e7e3604b
Parent:
106:ced8cbb51063 
-

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 76:aeb1df146756 1 /**
mbed_official 76:aeb1df146756 2 ******************************************************************************
mbed_official 76:aeb1df146756 3 * @file stm32f0xx_exti.c
mbed_official 76:aeb1df146756 4 * @author MCD Application Team
mbed_official 76:aeb1df146756 5 * @version V1.3.0
mbed_official 76:aeb1df146756 6 * @date 16-January-2014
mbed_official 76:aeb1df146756 7 * @brief This file provides firmware functions to manage the following
mbed_official 76:aeb1df146756 8 * functionalities of the EXTI peripheral:
mbed_official 76:aeb1df146756 9 * + Initialization and Configuration
mbed_official 76:aeb1df146756 10 * + Interrupts and flags management
mbed_official 76:aeb1df146756 11 *
mbed_official 76:aeb1df146756 12 * @verbatim
mbed_official 76:aeb1df146756 13 ==============================================================================
mbed_official 76:aeb1df146756 14 ##### EXTI features #####
mbed_official 76:aeb1df146756 15 ==============================================================================
mbed_official 76:aeb1df146756 16 [..] External interrupt/event lines are mapped as following:
mbed_official 76:aeb1df146756 17 (#) All available GPIO pins are connected to the 16 external
mbed_official 76:aeb1df146756 18 interrupt/event lines from EXTI0 to EXTI15.
mbed_official 76:aeb1df146756 19 (#) EXTI line 16 is connected to the PVD output, not applicable for STM32F030 devices.
mbed_official 76:aeb1df146756 20 (#) EXTI line 17 is connected to the RTC Alarm event.
mbed_official 76:aeb1df146756 21 (#) EXTI line 18 is connected to the RTC Alarm event, applicable only for STM32F072 devices.
mbed_official 76:aeb1df146756 22 (#) EXTI line 19 is connected to the RTC Tamper and TimeStamp events.
mbed_official 76:aeb1df146756 23 (#) EXTI line 20 is connected to the RTC wakeup event, applicable only for STM32F072 devices.
mbed_official 76:aeb1df146756 24 (#) EXTI line 21 is connected to the Comparator 1 wakeup event, applicable only for STM32F051 and STM32F072 devices.
mbed_official 76:aeb1df146756 25 (#) EXTI line 22 is connected to the Comparator 2 wakeup event, applicable only for STM32F051 and STM32F072 devices.
mbed_official 76:aeb1df146756 26 (#) EXTI line 23 is connected to the I2C1 wakeup event, not applicable for STM32F030 devices.
mbed_official 76:aeb1df146756 27 (#) EXTI line 25 is connected to the USART1 wakeup event, not applicable for STM32F030 devices.
mbed_official 76:aeb1df146756 28 (#) EXTI line 26 is connected to the USART2 wakeup event, applicable only for STM32F072 devices.
mbed_official 76:aeb1df146756 29 (#) EXTI line 27 is connected to the CEC wakeup event, applicable only for STM32F051 and STM32F072 devices.
mbed_official 76:aeb1df146756 30 (#) EXTI line 31 is connected to the VDD USB monitor event, applicable only for STM32F072 devices.
mbed_official 76:aeb1df146756 31
mbed_official 76:aeb1df146756 32 ##### How to use this driver #####
mbed_official 76:aeb1df146756 33 ==============================================================================
mbed_official 76:aeb1df146756 34 [..] In order to use an I/O pin as an external interrupt source, follow
mbed_official 76:aeb1df146756 35 steps below:
mbed_official 76:aeb1df146756 36 (#) Configure the I/O in input mode using GPIO_Init()
mbed_official 76:aeb1df146756 37 (#) Select the input source pin for the EXTI line using
mbed_official 76:aeb1df146756 38 SYSCFG_EXTILineConfig().
mbed_official 76:aeb1df146756 39 (#) Select the mode(interrupt, event) and configure the trigger selection
mbed_official 76:aeb1df146756 40 (Rising, falling or both) using EXTI_Init(). For the internal interrupt,
mbed_official 76:aeb1df146756 41 the trigger selection is not needed( the active edge is always the rising one).
mbed_official 76:aeb1df146756 42 (#) Configure NVIC IRQ channel mapped to the EXTI line using NVIC_Init().
mbed_official 76:aeb1df146756 43 (#) Optionally, you can generate a software interrupt using the function EXTI_GenerateSWInterrupt().
mbed_official 76:aeb1df146756 44 [..]
mbed_official 76:aeb1df146756 45 (@) SYSCFG APB clock must be enabled to get write access to SYSCFG_EXTICRx
mbed_official 76:aeb1df146756 46 registers using RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
mbed_official 76:aeb1df146756 47 @endverbatim
mbed_official 76:aeb1df146756 48 *
mbed_official 76:aeb1df146756 49 ******************************************************************************
mbed_official 76:aeb1df146756 50 * @attention
mbed_official 76:aeb1df146756 51 *
mbed_official 106:ced8cbb51063 52 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 76:aeb1df146756 53 *
mbed_official 106:ced8cbb51063 54 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 106:ced8cbb51063 55 * are permitted provided that the following conditions are met:
mbed_official 106:ced8cbb51063 56 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 106:ced8cbb51063 57 * this list of conditions and the following disclaimer.
mbed_official 106:ced8cbb51063 58 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 106:ced8cbb51063 59 * this list of conditions and the following disclaimer in the documentation
mbed_official 106:ced8cbb51063 60 * and/or other materials provided with the distribution.
mbed_official 106:ced8cbb51063 61 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 106:ced8cbb51063 62 * may be used to endorse or promote products derived from this software
mbed_official 106:ced8cbb51063 63 * without specific prior written permission.
mbed_official 76:aeb1df146756 64 *
mbed_official 106:ced8cbb51063 65 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 106:ced8cbb51063 66 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 106:ced8cbb51063 67 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 106:ced8cbb51063 68 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 106:ced8cbb51063 69 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 106:ced8cbb51063 70 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 106:ced8cbb51063 71 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 106:ced8cbb51063 72 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 106:ced8cbb51063 73 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 106:ced8cbb51063 74 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 76:aeb1df146756 75 *
mbed_official 76:aeb1df146756 76 ******************************************************************************
mbed_official 76:aeb1df146756 77 */
mbed_official 76:aeb1df146756 78
mbed_official 76:aeb1df146756 79 /* Includes ------------------------------------------------------------------*/
mbed_official 76:aeb1df146756 80 #include "stm32f0xx_exti.h"
mbed_official 76:aeb1df146756 81
mbed_official 76:aeb1df146756 82 /** @addtogroup STM32F0xx_StdPeriph_Driver
mbed_official 76:aeb1df146756 83 * @{
mbed_official 76:aeb1df146756 84 */
mbed_official 76:aeb1df146756 85
mbed_official 76:aeb1df146756 86 /** @defgroup EXTI
mbed_official 76:aeb1df146756 87 * @brief EXTI driver modules
mbed_official 76:aeb1df146756 88 * @{
mbed_official 76:aeb1df146756 89 */
mbed_official 76:aeb1df146756 90
mbed_official 76:aeb1df146756 91 /* Private typedef -----------------------------------------------------------*/
mbed_official 76:aeb1df146756 92 /* Private define ------------------------------------------------------------*/
mbed_official 76:aeb1df146756 93 #define EXTI_LINENONE ((uint32_t)0x00000) /* No interrupt selected */
mbed_official 76:aeb1df146756 94
mbed_official 76:aeb1df146756 95 /* Private macro -------------------------------------------------------------*/
mbed_official 76:aeb1df146756 96 /* Private variables ---------------------------------------------------------*/
mbed_official 76:aeb1df146756 97 /* Private function prototypes -----------------------------------------------*/
mbed_official 76:aeb1df146756 98 /* Private functions ---------------------------------------------------------*/
mbed_official 76:aeb1df146756 99
mbed_official 76:aeb1df146756 100 /** @defgroup EXTI_Private_Functions
mbed_official 76:aeb1df146756 101 * @{
mbed_official 76:aeb1df146756 102 */
mbed_official 76:aeb1df146756 103
mbed_official 76:aeb1df146756 104 /** @defgroup EXTI_Group1 Initialization and Configuration functions
mbed_official 76:aeb1df146756 105 * @brief Initialization and Configuration functions
mbed_official 76:aeb1df146756 106 *
mbed_official 76:aeb1df146756 107 @verbatim
mbed_official 76:aeb1df146756 108 ==============================================================================
mbed_official 76:aeb1df146756 109 ##### Initialization and Configuration functions #####
mbed_official 76:aeb1df146756 110 ==============================================================================
mbed_official 76:aeb1df146756 111
mbed_official 76:aeb1df146756 112 @endverbatim
mbed_official 76:aeb1df146756 113 * @{
mbed_official 76:aeb1df146756 114 */
mbed_official 76:aeb1df146756 115
mbed_official 76:aeb1df146756 116 /**
mbed_official 76:aeb1df146756 117 * @brief Deinitializes the EXTI peripheral registers to their default reset
mbed_official 76:aeb1df146756 118 * values.
mbed_official 76:aeb1df146756 119 * @param None
mbed_official 76:aeb1df146756 120 * @retval None
mbed_official 76:aeb1df146756 121 */
mbed_official 76:aeb1df146756 122 void EXTI_DeInit(void)
mbed_official 76:aeb1df146756 123 {
mbed_official 76:aeb1df146756 124 EXTI->IMR = 0x0F940000;
mbed_official 76:aeb1df146756 125 EXTI->EMR = 0x00000000;
mbed_official 76:aeb1df146756 126 EXTI->RTSR = 0x00000000;
mbed_official 76:aeb1df146756 127 EXTI->FTSR = 0x00000000;
mbed_official 76:aeb1df146756 128 EXTI->PR = 0x006BFFFF;
mbed_official 76:aeb1df146756 129 }
mbed_official 76:aeb1df146756 130
mbed_official 76:aeb1df146756 131 /**
mbed_official 76:aeb1df146756 132 * @brief Initializes the EXTI peripheral according to the specified
mbed_official 76:aeb1df146756 133 * parameters in the EXTI_InitStruct.
mbed_official 76:aeb1df146756 134 * @param EXTI_InitStruct: pointer to a EXTI_InitTypeDef structure that
mbed_official 76:aeb1df146756 135 * contains the configuration information for the EXTI peripheral.
mbed_official 76:aeb1df146756 136 * @retval None
mbed_official 76:aeb1df146756 137 */
mbed_official 76:aeb1df146756 138 void EXTI_Init(EXTI_InitTypeDef* EXTI_InitStruct)
mbed_official 76:aeb1df146756 139 {
mbed_official 76:aeb1df146756 140 uint32_t tmp = 0;
mbed_official 76:aeb1df146756 141
mbed_official 76:aeb1df146756 142 /* Check the parameters */
mbed_official 76:aeb1df146756 143 assert_param(IS_EXTI_MODE(EXTI_InitStruct->EXTI_Mode));
mbed_official 76:aeb1df146756 144 assert_param(IS_EXTI_TRIGGER(EXTI_InitStruct->EXTI_Trigger));
mbed_official 76:aeb1df146756 145 assert_param(IS_EXTI_LINE(EXTI_InitStruct->EXTI_Line));
mbed_official 76:aeb1df146756 146 assert_param(IS_FUNCTIONAL_STATE(EXTI_InitStruct->EXTI_LineCmd));
mbed_official 76:aeb1df146756 147
mbed_official 76:aeb1df146756 148 tmp = (uint32_t)EXTI_BASE;
mbed_official 76:aeb1df146756 149
mbed_official 76:aeb1df146756 150 if (EXTI_InitStruct->EXTI_LineCmd != DISABLE)
mbed_official 76:aeb1df146756 151 {
mbed_official 76:aeb1df146756 152 /* Clear EXTI line configuration */
mbed_official 76:aeb1df146756 153 EXTI->IMR &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 76:aeb1df146756 154 EXTI->EMR &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 76:aeb1df146756 155
mbed_official 76:aeb1df146756 156 tmp += EXTI_InitStruct->EXTI_Mode;
mbed_official 76:aeb1df146756 157
mbed_official 76:aeb1df146756 158 *(__IO uint32_t *) tmp |= EXTI_InitStruct->EXTI_Line;
mbed_official 76:aeb1df146756 159
mbed_official 76:aeb1df146756 160 /* Clear Rising Falling edge configuration */
mbed_official 76:aeb1df146756 161 EXTI->RTSR &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 76:aeb1df146756 162 EXTI->FTSR &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 76:aeb1df146756 163
mbed_official 76:aeb1df146756 164 /* Select the trigger for the selected interrupts */
mbed_official 76:aeb1df146756 165 if (EXTI_InitStruct->EXTI_Trigger == EXTI_Trigger_Rising_Falling)
mbed_official 76:aeb1df146756 166 {
mbed_official 76:aeb1df146756 167 /* Rising Falling edge */
mbed_official 76:aeb1df146756 168 EXTI->RTSR |= EXTI_InitStruct->EXTI_Line;
mbed_official 76:aeb1df146756 169 EXTI->FTSR |= EXTI_InitStruct->EXTI_Line;
mbed_official 76:aeb1df146756 170 }
mbed_official 76:aeb1df146756 171 else
mbed_official 76:aeb1df146756 172 {
mbed_official 76:aeb1df146756 173 tmp = (uint32_t)EXTI_BASE;
mbed_official 76:aeb1df146756 174 tmp += EXTI_InitStruct->EXTI_Trigger;
mbed_official 76:aeb1df146756 175
mbed_official 76:aeb1df146756 176 *(__IO uint32_t *) tmp |= EXTI_InitStruct->EXTI_Line;
mbed_official 76:aeb1df146756 177 }
mbed_official 76:aeb1df146756 178 }
mbed_official 76:aeb1df146756 179 else
mbed_official 76:aeb1df146756 180 {
mbed_official 76:aeb1df146756 181 tmp += EXTI_InitStruct->EXTI_Mode;
mbed_official 76:aeb1df146756 182
mbed_official 76:aeb1df146756 183 /* Disable the selected external lines */
mbed_official 76:aeb1df146756 184 *(__IO uint32_t *) tmp &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 76:aeb1df146756 185 }
mbed_official 76:aeb1df146756 186 }
mbed_official 76:aeb1df146756 187
mbed_official 76:aeb1df146756 188 /**
mbed_official 76:aeb1df146756 189 * @brief Fills each EXTI_InitStruct member with its reset value.
mbed_official 76:aeb1df146756 190 * @param EXTI_InitStruct: pointer to a EXTI_InitTypeDef structure which will
mbed_official 76:aeb1df146756 191 * be initialized.
mbed_official 76:aeb1df146756 192 * @retval None
mbed_official 76:aeb1df146756 193 */
mbed_official 76:aeb1df146756 194 void EXTI_StructInit(EXTI_InitTypeDef* EXTI_InitStruct)
mbed_official 76:aeb1df146756 195 {
mbed_official 76:aeb1df146756 196 EXTI_InitStruct->EXTI_Line = EXTI_LINENONE;
mbed_official 76:aeb1df146756 197 EXTI_InitStruct->EXTI_Mode = EXTI_Mode_Interrupt;
mbed_official 76:aeb1df146756 198 EXTI_InitStruct->EXTI_Trigger = EXTI_Trigger_Falling;
mbed_official 76:aeb1df146756 199 EXTI_InitStruct->EXTI_LineCmd = DISABLE;
mbed_official 76:aeb1df146756 200 }
mbed_official 76:aeb1df146756 201
mbed_official 76:aeb1df146756 202 /**
mbed_official 76:aeb1df146756 203 * @brief Generates a Software interrupt on selected EXTI line.
mbed_official 76:aeb1df146756 204 * @param EXTI_Line: specifies the EXTI line on which the software interrupt
mbed_official 76:aeb1df146756 205 * will be generated.
mbed_official 76:aeb1df146756 206 * This parameter can be any combination of EXTI_Linex where x can be (0..27).
mbed_official 76:aeb1df146756 207 * @retval None
mbed_official 76:aeb1df146756 208 */
mbed_official 76:aeb1df146756 209 void EXTI_GenerateSWInterrupt(uint32_t EXTI_Line)
mbed_official 76:aeb1df146756 210 {
mbed_official 76:aeb1df146756 211 /* Check the parameters */
mbed_official 76:aeb1df146756 212 assert_param(IS_EXTI_LINE(EXTI_Line));
mbed_official 76:aeb1df146756 213
mbed_official 76:aeb1df146756 214 EXTI->SWIER |= EXTI_Line;
mbed_official 76:aeb1df146756 215 }
mbed_official 76:aeb1df146756 216
mbed_official 76:aeb1df146756 217 /**
mbed_official 76:aeb1df146756 218 * @}
mbed_official 76:aeb1df146756 219 */
mbed_official 76:aeb1df146756 220
mbed_official 76:aeb1df146756 221 /** @defgroup EXTI_Group2 Interrupts and flags management functions
mbed_official 76:aeb1df146756 222 * @brief Interrupts and flags management functions
mbed_official 76:aeb1df146756 223 *
mbed_official 76:aeb1df146756 224 @verbatim
mbed_official 76:aeb1df146756 225 ==============================================================================
mbed_official 76:aeb1df146756 226 ##### Interrupts and flags management functions #####
mbed_official 76:aeb1df146756 227 ==============================================================================
mbed_official 76:aeb1df146756 228
mbed_official 76:aeb1df146756 229 @endverbatim
mbed_official 76:aeb1df146756 230 * @{
mbed_official 76:aeb1df146756 231 */
mbed_official 76:aeb1df146756 232
mbed_official 76:aeb1df146756 233 /**
mbed_official 76:aeb1df146756 234 * @brief Checks whether the specified EXTI line flag is set or not.
mbed_official 76:aeb1df146756 235 * @param EXTI_Line: specifies the EXTI line flag to check.
mbed_official 76:aeb1df146756 236 * This parameter can be EXTI_Linex where x can be (0..27).
mbed_official 76:aeb1df146756 237 * @retval The new state of EXTI_Line (SET or RESET).
mbed_official 76:aeb1df146756 238 */
mbed_official 76:aeb1df146756 239 FlagStatus EXTI_GetFlagStatus(uint32_t EXTI_Line)
mbed_official 76:aeb1df146756 240 {
mbed_official 76:aeb1df146756 241 FlagStatus bitstatus = RESET;
mbed_official 76:aeb1df146756 242 /* Check the parameters */
mbed_official 76:aeb1df146756 243 assert_param(IS_GET_EXTI_LINE(EXTI_Line));
mbed_official 76:aeb1df146756 244
mbed_official 76:aeb1df146756 245 if ((EXTI->PR & EXTI_Line) != (uint32_t)RESET)
mbed_official 76:aeb1df146756 246 {
mbed_official 76:aeb1df146756 247 bitstatus = SET;
mbed_official 76:aeb1df146756 248 }
mbed_official 76:aeb1df146756 249 else
mbed_official 76:aeb1df146756 250 {
mbed_official 76:aeb1df146756 251 bitstatus = RESET;
mbed_official 76:aeb1df146756 252 }
mbed_official 76:aeb1df146756 253 return bitstatus;
mbed_official 76:aeb1df146756 254 }
mbed_official 76:aeb1df146756 255
mbed_official 76:aeb1df146756 256 /**
mbed_official 76:aeb1df146756 257 * @brief Clears the EXTI's line pending flags.
mbed_official 76:aeb1df146756 258 * @param EXTI_Line: specifies the EXTI lines flags to clear.
mbed_official 76:aeb1df146756 259 * This parameter can be any combination of EXTI_Linex where x can be (0..27).
mbed_official 76:aeb1df146756 260 * @retval None
mbed_official 76:aeb1df146756 261 */
mbed_official 76:aeb1df146756 262 void EXTI_ClearFlag(uint32_t EXTI_Line)
mbed_official 76:aeb1df146756 263 {
mbed_official 76:aeb1df146756 264 /* Check the parameters */
mbed_official 76:aeb1df146756 265 assert_param(IS_EXTI_LINE(EXTI_Line));
mbed_official 76:aeb1df146756 266
mbed_official 76:aeb1df146756 267 EXTI->PR = EXTI_Line;
mbed_official 76:aeb1df146756 268 }
mbed_official 76:aeb1df146756 269
mbed_official 76:aeb1df146756 270 /**
mbed_official 76:aeb1df146756 271 * @brief Checks whether the specified EXTI line is asserted or not.
mbed_official 76:aeb1df146756 272 * @param EXTI_Line: specifies the EXTI line to check.
mbed_official 76:aeb1df146756 273 * This parameter can be EXTI_Linex where x can be (0..27).
mbed_official 76:aeb1df146756 274 * @retval The new state of EXTI_Line (SET or RESET).
mbed_official 76:aeb1df146756 275 */
mbed_official 76:aeb1df146756 276 ITStatus EXTI_GetITStatus(uint32_t EXTI_Line)
mbed_official 76:aeb1df146756 277 {
mbed_official 76:aeb1df146756 278 ITStatus bitstatus = RESET;
mbed_official 76:aeb1df146756 279
mbed_official 76:aeb1df146756 280 /* Check the parameters */
mbed_official 76:aeb1df146756 281 assert_param(IS_GET_EXTI_LINE(EXTI_Line));
mbed_official 76:aeb1df146756 282
mbed_official 76:aeb1df146756 283 if ((EXTI->PR & EXTI_Line) != (uint32_t)RESET)
mbed_official 76:aeb1df146756 284 {
mbed_official 76:aeb1df146756 285 bitstatus = SET;
mbed_official 76:aeb1df146756 286 }
mbed_official 76:aeb1df146756 287 else
mbed_official 76:aeb1df146756 288 {
mbed_official 76:aeb1df146756 289 bitstatus = RESET;
mbed_official 76:aeb1df146756 290 }
mbed_official 76:aeb1df146756 291 return bitstatus;
mbed_official 76:aeb1df146756 292 }
mbed_official 76:aeb1df146756 293
mbed_official 76:aeb1df146756 294 /**
mbed_official 76:aeb1df146756 295 * @brief Clears the EXTI's line pending bits.
mbed_official 76:aeb1df146756 296 * @param EXTI_Line: specifies the EXTI lines to clear.
mbed_official 76:aeb1df146756 297 * This parameter can be any combination of EXTI_Linex where x can be (0..27).
mbed_official 76:aeb1df146756 298 * @retval None
mbed_official 76:aeb1df146756 299 */
mbed_official 76:aeb1df146756 300 void EXTI_ClearITPendingBit(uint32_t EXTI_Line)
mbed_official 76:aeb1df146756 301 {
mbed_official 76:aeb1df146756 302 /* Check the parameters */
mbed_official 76:aeb1df146756 303 assert_param(IS_EXTI_LINE(EXTI_Line));
mbed_official 76:aeb1df146756 304
mbed_official 76:aeb1df146756 305 EXTI->PR = EXTI_Line;
mbed_official 76:aeb1df146756 306 }
mbed_official 76:aeb1df146756 307
mbed_official 76:aeb1df146756 308 /**
mbed_official 76:aeb1df146756 309 * @}
mbed_official 76:aeb1df146756 310 */
mbed_official 76:aeb1df146756 311
mbed_official 76:aeb1df146756 312 /**
mbed_official 76:aeb1df146756 313 * @}
mbed_official 76:aeb1df146756 314 */
mbed_official 76:aeb1df146756 315
mbed_official 76:aeb1df146756 316 /**
mbed_official 76:aeb1df146756 317 * @}
mbed_official 76:aeb1df146756 318 */
mbed_official 76:aeb1df146756 319
mbed_official 76:aeb1df146756 320 /**
mbed_official 76:aeb1df146756 321 * @}
mbed_official 76:aeb1df146756 322 */
mbed_official 76:aeb1df146756 323
mbed_official 76:aeb1df146756 324 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/