shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_exti.c@126:549ba18ddd81, 2014-03-19 (annotated)

Committer:
mbed_official
Date:
Wed Mar 19 16:00:09 2014 +0000
Revision:
126:549ba18ddd81
Synchronized with git revision cf8fd1cf86b0cd85131dd24a6ded21cc6fe04827



Full URL: https://github.com/mbedmicro/mbed/commit/cf8fd1cf86b0cd85131dd24a6ded21cc6fe04827/



Conflicts:

	workspace_tools/targets.py

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 126:549ba18ddd81 1 /**
mbed_official 126:549ba18ddd81 2 ******************************************************************************
mbed_official 126:549ba18ddd81 3 * @file stm32f10x_exti.c
mbed_official 126:549ba18ddd81 4 * @author MCD Application Team
mbed_official 126:549ba18ddd81 5 * @version V3.6.1
mbed_official 126:549ba18ddd81 6 * @date 05-March-2012
mbed_official 126:549ba18ddd81 7 * @brief This file provides all the EXTI firmware functions.
mbed_official 126:549ba18ddd81 8 *******************************************************************************
mbed_official 126:549ba18ddd81 9 * Copyright (c) 2014, STMicroelectronics
mbed_official 126:549ba18ddd81 10 * All rights reserved.
mbed_official 126:549ba18ddd81 11 *
mbed_official 126:549ba18ddd81 12 * Redistribution and use in source and binary forms, with or without
mbed_official 126:549ba18ddd81 13 * modification, are permitted provided that the following conditions are met:
mbed_official 126:549ba18ddd81 14 *
mbed_official 126:549ba18ddd81 15 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 126:549ba18ddd81 16 * this list of conditions and the following disclaimer.
mbed_official 126:549ba18ddd81 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 126:549ba18ddd81 18 * this list of conditions and the following disclaimer in the documentation
mbed_official 126:549ba18ddd81 19 * and/or other materials provided with the distribution.
mbed_official 126:549ba18ddd81 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 126:549ba18ddd81 21 * may be used to endorse or promote products derived from this software
mbed_official 126:549ba18ddd81 22 * without specific prior written permission.
mbed_official 126:549ba18ddd81 23 *
mbed_official 126:549ba18ddd81 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 126:549ba18ddd81 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 126:549ba18ddd81 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 126:549ba18ddd81 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 126:549ba18ddd81 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 126:549ba18ddd81 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 126:549ba18ddd81 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 126:549ba18ddd81 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 126:549ba18ddd81 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 126:549ba18ddd81 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 126:549ba18ddd81 34 *******************************************************************************
mbed_official 126:549ba18ddd81 35 */
mbed_official 126:549ba18ddd81 36
mbed_official 126:549ba18ddd81 37 /* Includes ------------------------------------------------------------------*/
mbed_official 126:549ba18ddd81 38 #include "stm32f10x_exti.h"
mbed_official 126:549ba18ddd81 39
mbed_official 126:549ba18ddd81 40 /** @addtogroup STM32F10x_StdPeriph_Driver
mbed_official 126:549ba18ddd81 41 * @{
mbed_official 126:549ba18ddd81 42 */
mbed_official 126:549ba18ddd81 43
mbed_official 126:549ba18ddd81 44 /** @defgroup EXTI
mbed_official 126:549ba18ddd81 45 * @brief EXTI driver modules
mbed_official 126:549ba18ddd81 46 * @{
mbed_official 126:549ba18ddd81 47 */
mbed_official 126:549ba18ddd81 48
mbed_official 126:549ba18ddd81 49 /** @defgroup EXTI_Private_TypesDefinitions
mbed_official 126:549ba18ddd81 50 * @{
mbed_official 126:549ba18ddd81 51 */
mbed_official 126:549ba18ddd81 52
mbed_official 126:549ba18ddd81 53 /**
mbed_official 126:549ba18ddd81 54 * @}
mbed_official 126:549ba18ddd81 55 */
mbed_official 126:549ba18ddd81 56
mbed_official 126:549ba18ddd81 57 /** @defgroup EXTI_Private_Defines
mbed_official 126:549ba18ddd81 58 * @{
mbed_official 126:549ba18ddd81 59 */
mbed_official 126:549ba18ddd81 60
mbed_official 126:549ba18ddd81 61 #define EXTI_LINENONE ((uint32_t)0x00000) /* No interrupt selected */
mbed_official 126:549ba18ddd81 62
mbed_official 126:549ba18ddd81 63 /**
mbed_official 126:549ba18ddd81 64 * @}
mbed_official 126:549ba18ddd81 65 */
mbed_official 126:549ba18ddd81 66
mbed_official 126:549ba18ddd81 67 /** @defgroup EXTI_Private_Macros
mbed_official 126:549ba18ddd81 68 * @{
mbed_official 126:549ba18ddd81 69 */
mbed_official 126:549ba18ddd81 70
mbed_official 126:549ba18ddd81 71 /**
mbed_official 126:549ba18ddd81 72 * @}
mbed_official 126:549ba18ddd81 73 */
mbed_official 126:549ba18ddd81 74
mbed_official 126:549ba18ddd81 75 /** @defgroup EXTI_Private_Variables
mbed_official 126:549ba18ddd81 76 * @{
mbed_official 126:549ba18ddd81 77 */
mbed_official 126:549ba18ddd81 78
mbed_official 126:549ba18ddd81 79 /**
mbed_official 126:549ba18ddd81 80 * @}
mbed_official 126:549ba18ddd81 81 */
mbed_official 126:549ba18ddd81 82
mbed_official 126:549ba18ddd81 83 /** @defgroup EXTI_Private_FunctionPrototypes
mbed_official 126:549ba18ddd81 84 * @{
mbed_official 126:549ba18ddd81 85 */
mbed_official 126:549ba18ddd81 86
mbed_official 126:549ba18ddd81 87 /**
mbed_official 126:549ba18ddd81 88 * @}
mbed_official 126:549ba18ddd81 89 */
mbed_official 126:549ba18ddd81 90
mbed_official 126:549ba18ddd81 91 /** @defgroup EXTI_Private_Functions
mbed_official 126:549ba18ddd81 92 * @{
mbed_official 126:549ba18ddd81 93 */
mbed_official 126:549ba18ddd81 94
mbed_official 126:549ba18ddd81 95 /**
mbed_official 126:549ba18ddd81 96 * @brief Deinitializes the EXTI peripheral registers to their default reset values.
mbed_official 126:549ba18ddd81 97 * @param None
mbed_official 126:549ba18ddd81 98 * @retval None
mbed_official 126:549ba18ddd81 99 */
mbed_official 126:549ba18ddd81 100 void EXTI_DeInit(void)
mbed_official 126:549ba18ddd81 101 {
mbed_official 126:549ba18ddd81 102 EXTI->IMR = 0x00000000;
mbed_official 126:549ba18ddd81 103 EXTI->EMR = 0x00000000;
mbed_official 126:549ba18ddd81 104 EXTI->RTSR = 0x00000000;
mbed_official 126:549ba18ddd81 105 EXTI->FTSR = 0x00000000;
mbed_official 126:549ba18ddd81 106 EXTI->PR = 0x000FFFFF;
mbed_official 126:549ba18ddd81 107 }
mbed_official 126:549ba18ddd81 108
mbed_official 126:549ba18ddd81 109 /**
mbed_official 126:549ba18ddd81 110 * @brief Initializes the EXTI peripheral according to the specified
mbed_official 126:549ba18ddd81 111 * parameters in the EXTI_InitStruct.
mbed_official 126:549ba18ddd81 112 * @param EXTI_InitStruct: pointer to a EXTI_InitTypeDef structure
mbed_official 126:549ba18ddd81 113 * that contains the configuration information for the EXTI peripheral.
mbed_official 126:549ba18ddd81 114 * @retval None
mbed_official 126:549ba18ddd81 115 */
mbed_official 126:549ba18ddd81 116 void EXTI_Init(EXTI_InitTypeDef* EXTI_InitStruct)
mbed_official 126:549ba18ddd81 117 {
mbed_official 126:549ba18ddd81 118 uint32_t tmp = 0;
mbed_official 126:549ba18ddd81 119
mbed_official 126:549ba18ddd81 120 /* Check the parameters */
mbed_official 126:549ba18ddd81 121 assert_param(IS_EXTI_MODE(EXTI_InitStruct->EXTI_Mode));
mbed_official 126:549ba18ddd81 122 assert_param(IS_EXTI_TRIGGER(EXTI_InitStruct->EXTI_Trigger));
mbed_official 126:549ba18ddd81 123 assert_param(IS_EXTI_LINE(EXTI_InitStruct->EXTI_Line));
mbed_official 126:549ba18ddd81 124 assert_param(IS_FUNCTIONAL_STATE(EXTI_InitStruct->EXTI_LineCmd));
mbed_official 126:549ba18ddd81 125
mbed_official 126:549ba18ddd81 126 tmp = (uint32_t)EXTI_BASE;
mbed_official 126:549ba18ddd81 127
mbed_official 126:549ba18ddd81 128 if (EXTI_InitStruct->EXTI_LineCmd != DISABLE)
mbed_official 126:549ba18ddd81 129 {
mbed_official 126:549ba18ddd81 130 /* Clear EXTI line configuration */
mbed_official 126:549ba18ddd81 131 EXTI->IMR &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 126:549ba18ddd81 132 EXTI->EMR &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 126:549ba18ddd81 133
mbed_official 126:549ba18ddd81 134 tmp += EXTI_InitStruct->EXTI_Mode;
mbed_official 126:549ba18ddd81 135
mbed_official 126:549ba18ddd81 136 *(__IO uint32_t *) tmp |= EXTI_InitStruct->EXTI_Line;
mbed_official 126:549ba18ddd81 137
mbed_official 126:549ba18ddd81 138 /* Clear Rising Falling edge configuration */
mbed_official 126:549ba18ddd81 139 EXTI->RTSR &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 126:549ba18ddd81 140 EXTI->FTSR &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 126:549ba18ddd81 141
mbed_official 126:549ba18ddd81 142 /* Select the trigger for the selected external interrupts */
mbed_official 126:549ba18ddd81 143 if (EXTI_InitStruct->EXTI_Trigger == EXTI_Trigger_Rising_Falling)
mbed_official 126:549ba18ddd81 144 {
mbed_official 126:549ba18ddd81 145 /* Rising Falling edge */
mbed_official 126:549ba18ddd81 146 EXTI->RTSR |= EXTI_InitStruct->EXTI_Line;
mbed_official 126:549ba18ddd81 147 EXTI->FTSR |= EXTI_InitStruct->EXTI_Line;
mbed_official 126:549ba18ddd81 148 }
mbed_official 126:549ba18ddd81 149 else
mbed_official 126:549ba18ddd81 150 {
mbed_official 126:549ba18ddd81 151 tmp = (uint32_t)EXTI_BASE;
mbed_official 126:549ba18ddd81 152 tmp += EXTI_InitStruct->EXTI_Trigger;
mbed_official 126:549ba18ddd81 153
mbed_official 126:549ba18ddd81 154 *(__IO uint32_t *) tmp |= EXTI_InitStruct->EXTI_Line;
mbed_official 126:549ba18ddd81 155 }
mbed_official 126:549ba18ddd81 156 }
mbed_official 126:549ba18ddd81 157 else
mbed_official 126:549ba18ddd81 158 {
mbed_official 126:549ba18ddd81 159 tmp += EXTI_InitStruct->EXTI_Mode;
mbed_official 126:549ba18ddd81 160
mbed_official 126:549ba18ddd81 161 /* Disable the selected external lines */
mbed_official 126:549ba18ddd81 162 *(__IO uint32_t *) tmp &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 126:549ba18ddd81 163 }
mbed_official 126:549ba18ddd81 164 }
mbed_official 126:549ba18ddd81 165
mbed_official 126:549ba18ddd81 166 /**
mbed_official 126:549ba18ddd81 167 * @brief Fills each EXTI_InitStruct member with its reset value.
mbed_official 126:549ba18ddd81 168 * @param EXTI_InitStruct: pointer to a EXTI_InitTypeDef structure which will
mbed_official 126:549ba18ddd81 169 * be initialized.
mbed_official 126:549ba18ddd81 170 * @retval None
mbed_official 126:549ba18ddd81 171 */
mbed_official 126:549ba18ddd81 172 void EXTI_StructInit(EXTI_InitTypeDef* EXTI_InitStruct)
mbed_official 126:549ba18ddd81 173 {
mbed_official 126:549ba18ddd81 174 EXTI_InitStruct->EXTI_Line = EXTI_LINENONE;
mbed_official 126:549ba18ddd81 175 EXTI_InitStruct->EXTI_Mode = EXTI_Mode_Interrupt;
mbed_official 126:549ba18ddd81 176 EXTI_InitStruct->EXTI_Trigger = EXTI_Trigger_Falling;
mbed_official 126:549ba18ddd81 177 EXTI_InitStruct->EXTI_LineCmd = DISABLE;
mbed_official 126:549ba18ddd81 178 }
mbed_official 126:549ba18ddd81 179
mbed_official 126:549ba18ddd81 180 /**
mbed_official 126:549ba18ddd81 181 * @brief Generates a Software interrupt.
mbed_official 126:549ba18ddd81 182 * @param EXTI_Line: specifies the EXTI lines to be enabled or disabled.
mbed_official 126:549ba18ddd81 183 * This parameter can be any combination of EXTI_Linex where x can be (0..19).
mbed_official 126:549ba18ddd81 184 * @retval None
mbed_official 126:549ba18ddd81 185 */
mbed_official 126:549ba18ddd81 186 void EXTI_GenerateSWInterrupt(uint32_t EXTI_Line)
mbed_official 126:549ba18ddd81 187 {
mbed_official 126:549ba18ddd81 188 /* Check the parameters */
mbed_official 126:549ba18ddd81 189 assert_param(IS_EXTI_LINE(EXTI_Line));
mbed_official 126:549ba18ddd81 190
mbed_official 126:549ba18ddd81 191 EXTI->SWIER |= EXTI_Line;
mbed_official 126:549ba18ddd81 192 }
mbed_official 126:549ba18ddd81 193
mbed_official 126:549ba18ddd81 194 /**
mbed_official 126:549ba18ddd81 195 * @brief Checks whether the specified EXTI line flag is set or not.
mbed_official 126:549ba18ddd81 196 * @param EXTI_Line: specifies the EXTI line flag to check.
mbed_official 126:549ba18ddd81 197 * This parameter can be:
mbed_official 126:549ba18ddd81 198 * @arg EXTI_Linex: External interrupt line x where x(0..19)
mbed_official 126:549ba18ddd81 199 * @retval The new state of EXTI_Line (SET or RESET).
mbed_official 126:549ba18ddd81 200 */
mbed_official 126:549ba18ddd81 201 FlagStatus EXTI_GetFlagStatus(uint32_t EXTI_Line)
mbed_official 126:549ba18ddd81 202 {
mbed_official 126:549ba18ddd81 203 FlagStatus bitstatus = RESET;
mbed_official 126:549ba18ddd81 204 /* Check the parameters */
mbed_official 126:549ba18ddd81 205 assert_param(IS_GET_EXTI_LINE(EXTI_Line));
mbed_official 126:549ba18ddd81 206
mbed_official 126:549ba18ddd81 207 if ((EXTI->PR & EXTI_Line) != (uint32_t)RESET)
mbed_official 126:549ba18ddd81 208 {
mbed_official 126:549ba18ddd81 209 bitstatus = SET;
mbed_official 126:549ba18ddd81 210 }
mbed_official 126:549ba18ddd81 211 else
mbed_official 126:549ba18ddd81 212 {
mbed_official 126:549ba18ddd81 213 bitstatus = RESET;
mbed_official 126:549ba18ddd81 214 }
mbed_official 126:549ba18ddd81 215 return bitstatus;
mbed_official 126:549ba18ddd81 216 }
mbed_official 126:549ba18ddd81 217
mbed_official 126:549ba18ddd81 218 /**
mbed_official 126:549ba18ddd81 219 * @brief Clears the EXTI's line pending flags.
mbed_official 126:549ba18ddd81 220 * @param EXTI_Line: specifies the EXTI lines flags to clear.
mbed_official 126:549ba18ddd81 221 * This parameter can be any combination of EXTI_Linex where x can be (0..19).
mbed_official 126:549ba18ddd81 222 * @retval None
mbed_official 126:549ba18ddd81 223 */
mbed_official 126:549ba18ddd81 224 void EXTI_ClearFlag(uint32_t EXTI_Line)
mbed_official 126:549ba18ddd81 225 {
mbed_official 126:549ba18ddd81 226 /* Check the parameters */
mbed_official 126:549ba18ddd81 227 assert_param(IS_EXTI_LINE(EXTI_Line));
mbed_official 126:549ba18ddd81 228
mbed_official 126:549ba18ddd81 229 EXTI->PR = EXTI_Line;
mbed_official 126:549ba18ddd81 230 }
mbed_official 126:549ba18ddd81 231
mbed_official 126:549ba18ddd81 232 /**
mbed_official 126:549ba18ddd81 233 * @brief Checks whether the specified EXTI line is asserted or not.
mbed_official 126:549ba18ddd81 234 * @param EXTI_Line: specifies the EXTI line to check.
mbed_official 126:549ba18ddd81 235 * This parameter can be:
mbed_official 126:549ba18ddd81 236 * @arg EXTI_Linex: External interrupt line x where x(0..19)
mbed_official 126:549ba18ddd81 237 * @retval The new state of EXTI_Line (SET or RESET).
mbed_official 126:549ba18ddd81 238 */
mbed_official 126:549ba18ddd81 239 ITStatus EXTI_GetITStatus(uint32_t EXTI_Line)
mbed_official 126:549ba18ddd81 240 {
mbed_official 126:549ba18ddd81 241 ITStatus bitstatus = RESET;
mbed_official 126:549ba18ddd81 242 uint32_t enablestatus = 0;
mbed_official 126:549ba18ddd81 243 /* Check the parameters */
mbed_official 126:549ba18ddd81 244 assert_param(IS_GET_EXTI_LINE(EXTI_Line));
mbed_official 126:549ba18ddd81 245
mbed_official 126:549ba18ddd81 246 enablestatus = EXTI->IMR & EXTI_Line;
mbed_official 126:549ba18ddd81 247 if (((EXTI->PR & EXTI_Line) != (uint32_t)RESET) && (enablestatus != (uint32_t)RESET))
mbed_official 126:549ba18ddd81 248 {
mbed_official 126:549ba18ddd81 249 bitstatus = SET;
mbed_official 126:549ba18ddd81 250 }
mbed_official 126:549ba18ddd81 251 else
mbed_official 126:549ba18ddd81 252 {
mbed_official 126:549ba18ddd81 253 bitstatus = RESET;
mbed_official 126:549ba18ddd81 254 }
mbed_official 126:549ba18ddd81 255 return bitstatus;
mbed_official 126:549ba18ddd81 256 }
mbed_official 126:549ba18ddd81 257
mbed_official 126:549ba18ddd81 258 /**
mbed_official 126:549ba18ddd81 259 * @brief Clears the EXTI's line pending bits.
mbed_official 126:549ba18ddd81 260 * @param EXTI_Line: specifies the EXTI lines to clear.
mbed_official 126:549ba18ddd81 261 * This parameter can be any combination of EXTI_Linex where x can be (0..19).
mbed_official 126:549ba18ddd81 262 * @retval None
mbed_official 126:549ba18ddd81 263 */
mbed_official 126:549ba18ddd81 264 void EXTI_ClearITPendingBit(uint32_t EXTI_Line)
mbed_official 126:549ba18ddd81 265 {
mbed_official 126:549ba18ddd81 266 /* Check the parameters */
mbed_official 126:549ba18ddd81 267 assert_param(IS_EXTI_LINE(EXTI_Line));
mbed_official 126:549ba18ddd81 268
mbed_official 126:549ba18ddd81 269 EXTI->PR = EXTI_Line;
mbed_official 126:549ba18ddd81 270 }
mbed_official 126:549ba18ddd81 271
mbed_official 126:549ba18ddd81 272 /**
mbed_official 126:549ba18ddd81 273 * @}
mbed_official 126:549ba18ddd81 274 */
mbed_official 126:549ba18ddd81 275
mbed_official 126:549ba18ddd81 276 /**
mbed_official 126:549ba18ddd81 277 * @}
mbed_official 126:549ba18ddd81 278 */
mbed_official 126:549ba18ddd81 279
mbed_official 126:549ba18ddd81 280 /**
mbed_official 126:549ba18ddd81 281 * @}
mbed_official 126:549ba18ddd81 282 */
mbed_official 126:549ba18ddd81 283
mbed_official 126:549ba18ddd81 284 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/