Ken Todotani / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/cmsis/TARGET_STM/TARGET_NUCLEO_F103RB/stm32f10x_exti.c@52:a51c77007319, 2013-12-02 (annotated)

Committer:
mbed_official
Date:
Mon Dec 02 11:30:05 2013 +0000
Revision:
52:a51c77007319
Child:
70:c1fbde68b492
Synchronized with git revision 49df530ae72ce97ccc773d1f2c13b38e868e6abd



Full URL: https://github.com/mbedmicro/mbed/commit/49df530ae72ce97ccc773d1f2c13b38e868e6abd/



Add STMicroelectronics NUCLEO_F103RB target

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 52:a51c77007319 1 /**
mbed_official 52:a51c77007319 2 ******************************************************************************
mbed_official 52:a51c77007319 3 * @file stm32f10x_exti.c
mbed_official 52:a51c77007319 4 * @author MCD Application Team
mbed_official 52:a51c77007319 5 * @version V3.5.0
mbed_official 52:a51c77007319 6 * @date 11-March-2011
mbed_official 52:a51c77007319 7 * @brief This file provides all the EXTI firmware functions.
mbed_official 52:a51c77007319 8 ******************************************************************************
mbed_official 52:a51c77007319 9 * @attention
mbed_official 52:a51c77007319 10 *
mbed_official 52:a51c77007319 11 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
mbed_official 52:a51c77007319 12 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
mbed_official 52:a51c77007319 13 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
mbed_official 52:a51c77007319 14 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
mbed_official 52:a51c77007319 15 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
mbed_official 52:a51c77007319 16 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
mbed_official 52:a51c77007319 17 *
mbed_official 52:a51c77007319 18 * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
mbed_official 52:a51c77007319 19 ******************************************************************************
mbed_official 52:a51c77007319 20 */
mbed_official 52:a51c77007319 21
mbed_official 52:a51c77007319 22 /* Includes ------------------------------------------------------------------*/
mbed_official 52:a51c77007319 23 #include "stm32f10x_exti.h"
mbed_official 52:a51c77007319 24
mbed_official 52:a51c77007319 25 /** @addtogroup STM32F10x_StdPeriph_Driver
mbed_official 52:a51c77007319 26 * @{
mbed_official 52:a51c77007319 27 */
mbed_official 52:a51c77007319 28
mbed_official 52:a51c77007319 29 /** @defgroup EXTI
mbed_official 52:a51c77007319 30 * @brief EXTI driver modules
mbed_official 52:a51c77007319 31 * @{
mbed_official 52:a51c77007319 32 */
mbed_official 52:a51c77007319 33
mbed_official 52:a51c77007319 34 /** @defgroup EXTI_Private_TypesDefinitions
mbed_official 52:a51c77007319 35 * @{
mbed_official 52:a51c77007319 36 */
mbed_official 52:a51c77007319 37
mbed_official 52:a51c77007319 38 /**
mbed_official 52:a51c77007319 39 * @}
mbed_official 52:a51c77007319 40 */
mbed_official 52:a51c77007319 41
mbed_official 52:a51c77007319 42 /** @defgroup EXTI_Private_Defines
mbed_official 52:a51c77007319 43 * @{
mbed_official 52:a51c77007319 44 */
mbed_official 52:a51c77007319 45
mbed_official 52:a51c77007319 46 #define EXTI_LINENONE ((uint32_t)0x00000) /* No interrupt selected */
mbed_official 52:a51c77007319 47
mbed_official 52:a51c77007319 48 /**
mbed_official 52:a51c77007319 49 * @}
mbed_official 52:a51c77007319 50 */
mbed_official 52:a51c77007319 51
mbed_official 52:a51c77007319 52 /** @defgroup EXTI_Private_Macros
mbed_official 52:a51c77007319 53 * @{
mbed_official 52:a51c77007319 54 */
mbed_official 52:a51c77007319 55
mbed_official 52:a51c77007319 56 /**
mbed_official 52:a51c77007319 57 * @}
mbed_official 52:a51c77007319 58 */
mbed_official 52:a51c77007319 59
mbed_official 52:a51c77007319 60 /** @defgroup EXTI_Private_Variables
mbed_official 52:a51c77007319 61 * @{
mbed_official 52:a51c77007319 62 */
mbed_official 52:a51c77007319 63
mbed_official 52:a51c77007319 64 /**
mbed_official 52:a51c77007319 65 * @}
mbed_official 52:a51c77007319 66 */
mbed_official 52:a51c77007319 67
mbed_official 52:a51c77007319 68 /** @defgroup EXTI_Private_FunctionPrototypes
mbed_official 52:a51c77007319 69 * @{
mbed_official 52:a51c77007319 70 */
mbed_official 52:a51c77007319 71
mbed_official 52:a51c77007319 72 /**
mbed_official 52:a51c77007319 73 * @}
mbed_official 52:a51c77007319 74 */
mbed_official 52:a51c77007319 75
mbed_official 52:a51c77007319 76 /** @defgroup EXTI_Private_Functions
mbed_official 52:a51c77007319 77 * @{
mbed_official 52:a51c77007319 78 */
mbed_official 52:a51c77007319 79
mbed_official 52:a51c77007319 80 /**
mbed_official 52:a51c77007319 81 * @brief Deinitializes the EXTI peripheral registers to their default reset values.
mbed_official 52:a51c77007319 82 * @param None
mbed_official 52:a51c77007319 83 * @retval None
mbed_official 52:a51c77007319 84 */
mbed_official 52:a51c77007319 85 void EXTI_DeInit(void)
mbed_official 52:a51c77007319 86 {
mbed_official 52:a51c77007319 87 EXTI->IMR = 0x00000000;
mbed_official 52:a51c77007319 88 EXTI->EMR = 0x00000000;
mbed_official 52:a51c77007319 89 EXTI->RTSR = 0x00000000;
mbed_official 52:a51c77007319 90 EXTI->FTSR = 0x00000000;
mbed_official 52:a51c77007319 91 EXTI->PR = 0x000FFFFF;
mbed_official 52:a51c77007319 92 }
mbed_official 52:a51c77007319 93
mbed_official 52:a51c77007319 94 /**
mbed_official 52:a51c77007319 95 * @brief Initializes the EXTI peripheral according to the specified
mbed_official 52:a51c77007319 96 * parameters in the EXTI_InitStruct.
mbed_official 52:a51c77007319 97 * @param EXTI_InitStruct: pointer to a EXTI_InitTypeDef structure
mbed_official 52:a51c77007319 98 * that contains the configuration information for the EXTI peripheral.
mbed_official 52:a51c77007319 99 * @retval None
mbed_official 52:a51c77007319 100 */
mbed_official 52:a51c77007319 101 void EXTI_Init(EXTI_InitTypeDef* EXTI_InitStruct)
mbed_official 52:a51c77007319 102 {
mbed_official 52:a51c77007319 103 uint32_t tmp = 0;
mbed_official 52:a51c77007319 104
mbed_official 52:a51c77007319 105 /* Check the parameters */
mbed_official 52:a51c77007319 106 assert_param(IS_EXTI_MODE(EXTI_InitStruct->EXTI_Mode));
mbed_official 52:a51c77007319 107 assert_param(IS_EXTI_TRIGGER(EXTI_InitStruct->EXTI_Trigger));
mbed_official 52:a51c77007319 108 assert_param(IS_EXTI_LINE(EXTI_InitStruct->EXTI_Line));
mbed_official 52:a51c77007319 109 assert_param(IS_FUNCTIONAL_STATE(EXTI_InitStruct->EXTI_LineCmd));
mbed_official 52:a51c77007319 110
mbed_official 52:a51c77007319 111 tmp = (uint32_t)EXTI_BASE;
mbed_official 52:a51c77007319 112
mbed_official 52:a51c77007319 113 if (EXTI_InitStruct->EXTI_LineCmd != DISABLE)
mbed_official 52:a51c77007319 114 {
mbed_official 52:a51c77007319 115 /* Clear EXTI line configuration */
mbed_official 52:a51c77007319 116 EXTI->IMR &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 52:a51c77007319 117 EXTI->EMR &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 52:a51c77007319 118
mbed_official 52:a51c77007319 119 tmp += EXTI_InitStruct->EXTI_Mode;
mbed_official 52:a51c77007319 120
mbed_official 52:a51c77007319 121 *(__IO uint32_t *) tmp |= EXTI_InitStruct->EXTI_Line;
mbed_official 52:a51c77007319 122
mbed_official 52:a51c77007319 123 /* Clear Rising Falling edge configuration */
mbed_official 52:a51c77007319 124 EXTI->RTSR &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 52:a51c77007319 125 EXTI->FTSR &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 52:a51c77007319 126
mbed_official 52:a51c77007319 127 /* Select the trigger for the selected external interrupts */
mbed_official 52:a51c77007319 128 if (EXTI_InitStruct->EXTI_Trigger == EXTI_Trigger_Rising_Falling)
mbed_official 52:a51c77007319 129 {
mbed_official 52:a51c77007319 130 /* Rising Falling edge */
mbed_official 52:a51c77007319 131 EXTI->RTSR |= EXTI_InitStruct->EXTI_Line;
mbed_official 52:a51c77007319 132 EXTI->FTSR |= EXTI_InitStruct->EXTI_Line;
mbed_official 52:a51c77007319 133 }
mbed_official 52:a51c77007319 134 else
mbed_official 52:a51c77007319 135 {
mbed_official 52:a51c77007319 136 tmp = (uint32_t)EXTI_BASE;
mbed_official 52:a51c77007319 137 tmp += EXTI_InitStruct->EXTI_Trigger;
mbed_official 52:a51c77007319 138
mbed_official 52:a51c77007319 139 *(__IO uint32_t *) tmp |= EXTI_InitStruct->EXTI_Line;
mbed_official 52:a51c77007319 140 }
mbed_official 52:a51c77007319 141 }
mbed_official 52:a51c77007319 142 else
mbed_official 52:a51c77007319 143 {
mbed_official 52:a51c77007319 144 tmp += EXTI_InitStruct->EXTI_Mode;
mbed_official 52:a51c77007319 145
mbed_official 52:a51c77007319 146 /* Disable the selected external lines */
mbed_official 52:a51c77007319 147 *(__IO uint32_t *) tmp &= ~EXTI_InitStruct->EXTI_Line;
mbed_official 52:a51c77007319 148 }
mbed_official 52:a51c77007319 149 }
mbed_official 52:a51c77007319 150
mbed_official 52:a51c77007319 151 /**
mbed_official 52:a51c77007319 152 * @brief Fills each EXTI_InitStruct member with its reset value.
mbed_official 52:a51c77007319 153 * @param EXTI_InitStruct: pointer to a EXTI_InitTypeDef structure which will
mbed_official 52:a51c77007319 154 * be initialized.
mbed_official 52:a51c77007319 155 * @retval None
mbed_official 52:a51c77007319 156 */
mbed_official 52:a51c77007319 157 void EXTI_StructInit(EXTI_InitTypeDef* EXTI_InitStruct)
mbed_official 52:a51c77007319 158 {
mbed_official 52:a51c77007319 159 EXTI_InitStruct->EXTI_Line = EXTI_LINENONE;
mbed_official 52:a51c77007319 160 EXTI_InitStruct->EXTI_Mode = EXTI_Mode_Interrupt;
mbed_official 52:a51c77007319 161 EXTI_InitStruct->EXTI_Trigger = EXTI_Trigger_Falling;
mbed_official 52:a51c77007319 162 EXTI_InitStruct->EXTI_LineCmd = DISABLE;
mbed_official 52:a51c77007319 163 }
mbed_official 52:a51c77007319 164
mbed_official 52:a51c77007319 165 /**
mbed_official 52:a51c77007319 166 * @brief Generates a Software interrupt.
mbed_official 52:a51c77007319 167 * @param EXTI_Line: specifies the EXTI lines to be enabled or disabled.
mbed_official 52:a51c77007319 168 * This parameter can be any combination of EXTI_Linex where x can be (0..19).
mbed_official 52:a51c77007319 169 * @retval None
mbed_official 52:a51c77007319 170 */
mbed_official 52:a51c77007319 171 void EXTI_GenerateSWInterrupt(uint32_t EXTI_Line)
mbed_official 52:a51c77007319 172 {
mbed_official 52:a51c77007319 173 /* Check the parameters */
mbed_official 52:a51c77007319 174 assert_param(IS_EXTI_LINE(EXTI_Line));
mbed_official 52:a51c77007319 175
mbed_official 52:a51c77007319 176 EXTI->SWIER |= EXTI_Line;
mbed_official 52:a51c77007319 177 }
mbed_official 52:a51c77007319 178
mbed_official 52:a51c77007319 179 /**
mbed_official 52:a51c77007319 180 * @brief Checks whether the specified EXTI line flag is set or not.
mbed_official 52:a51c77007319 181 * @param EXTI_Line: specifies the EXTI line flag to check.
mbed_official 52:a51c77007319 182 * This parameter can be:
mbed_official 52:a51c77007319 183 * @arg EXTI_Linex: External interrupt line x where x(0..19)
mbed_official 52:a51c77007319 184 * @retval The new state of EXTI_Line (SET or RESET).
mbed_official 52:a51c77007319 185 */
mbed_official 52:a51c77007319 186 FlagStatus EXTI_GetFlagStatus(uint32_t EXTI_Line)
mbed_official 52:a51c77007319 187 {
mbed_official 52:a51c77007319 188 FlagStatus bitstatus = RESET;
mbed_official 52:a51c77007319 189 /* Check the parameters */
mbed_official 52:a51c77007319 190 assert_param(IS_GET_EXTI_LINE(EXTI_Line));
mbed_official 52:a51c77007319 191
mbed_official 52:a51c77007319 192 if ((EXTI->PR & EXTI_Line) != (uint32_t)RESET)
mbed_official 52:a51c77007319 193 {
mbed_official 52:a51c77007319 194 bitstatus = SET;
mbed_official 52:a51c77007319 195 }
mbed_official 52:a51c77007319 196 else
mbed_official 52:a51c77007319 197 {
mbed_official 52:a51c77007319 198 bitstatus = RESET;
mbed_official 52:a51c77007319 199 }
mbed_official 52:a51c77007319 200 return bitstatus;
mbed_official 52:a51c77007319 201 }
mbed_official 52:a51c77007319 202
mbed_official 52:a51c77007319 203 /**
mbed_official 52:a51c77007319 204 * @brief Clears the EXTI's line pending flags.
mbed_official 52:a51c77007319 205 * @param EXTI_Line: specifies the EXTI lines flags to clear.
mbed_official 52:a51c77007319 206 * This parameter can be any combination of EXTI_Linex where x can be (0..19).
mbed_official 52:a51c77007319 207 * @retval None
mbed_official 52:a51c77007319 208 */
mbed_official 52:a51c77007319 209 void EXTI_ClearFlag(uint32_t EXTI_Line)
mbed_official 52:a51c77007319 210 {
mbed_official 52:a51c77007319 211 /* Check the parameters */
mbed_official 52:a51c77007319 212 assert_param(IS_EXTI_LINE(EXTI_Line));
mbed_official 52:a51c77007319 213
mbed_official 52:a51c77007319 214 EXTI->PR = EXTI_Line;
mbed_official 52:a51c77007319 215 }
mbed_official 52:a51c77007319 216
mbed_official 52:a51c77007319 217 /**
mbed_official 52:a51c77007319 218 * @brief Checks whether the specified EXTI line is asserted or not.
mbed_official 52:a51c77007319 219 * @param EXTI_Line: specifies the EXTI line to check.
mbed_official 52:a51c77007319 220 * This parameter can be:
mbed_official 52:a51c77007319 221 * @arg EXTI_Linex: External interrupt line x where x(0..19)
mbed_official 52:a51c77007319 222 * @retval The new state of EXTI_Line (SET or RESET).
mbed_official 52:a51c77007319 223 */
mbed_official 52:a51c77007319 224 ITStatus EXTI_GetITStatus(uint32_t EXTI_Line)
mbed_official 52:a51c77007319 225 {
mbed_official 52:a51c77007319 226 ITStatus bitstatus = RESET;
mbed_official 52:a51c77007319 227 uint32_t enablestatus = 0;
mbed_official 52:a51c77007319 228 /* Check the parameters */
mbed_official 52:a51c77007319 229 assert_param(IS_GET_EXTI_LINE(EXTI_Line));
mbed_official 52:a51c77007319 230
mbed_official 52:a51c77007319 231 enablestatus = EXTI->IMR & EXTI_Line;
mbed_official 52:a51c77007319 232 if (((EXTI->PR & EXTI_Line) != (uint32_t)RESET) && (enablestatus != (uint32_t)RESET))
mbed_official 52:a51c77007319 233 {
mbed_official 52:a51c77007319 234 bitstatus = SET;
mbed_official 52:a51c77007319 235 }
mbed_official 52:a51c77007319 236 else
mbed_official 52:a51c77007319 237 {
mbed_official 52:a51c77007319 238 bitstatus = RESET;
mbed_official 52:a51c77007319 239 }
mbed_official 52:a51c77007319 240 return bitstatus;
mbed_official 52:a51c77007319 241 }
mbed_official 52:a51c77007319 242
mbed_official 52:a51c77007319 243 /**
mbed_official 52:a51c77007319 244 * @brief Clears the EXTI's line pending bits.
mbed_official 52:a51c77007319 245 * @param EXTI_Line: specifies the EXTI lines to clear.
mbed_official 52:a51c77007319 246 * This parameter can be any combination of EXTI_Linex where x can be (0..19).
mbed_official 52:a51c77007319 247 * @retval None
mbed_official 52:a51c77007319 248 */
mbed_official 52:a51c77007319 249 void EXTI_ClearITPendingBit(uint32_t EXTI_Line)
mbed_official 52:a51c77007319 250 {
mbed_official 52:a51c77007319 251 /* Check the parameters */
mbed_official 52:a51c77007319 252 assert_param(IS_EXTI_LINE(EXTI_Line));
mbed_official 52:a51c77007319 253
mbed_official 52:a51c77007319 254 EXTI->PR = EXTI_Line;
mbed_official 52:a51c77007319 255 }
mbed_official 52:a51c77007319 256
mbed_official 52:a51c77007319 257 /**
mbed_official 52:a51c77007319 258 * @}
mbed_official 52:a51c77007319 259 */
mbed_official 52:a51c77007319 260
mbed_official 52:a51c77007319 261 /**
mbed_official 52:a51c77007319 262 * @}
mbed_official 52:a51c77007319 263 */
mbed_official 52:a51c77007319 264
mbed_official 52:a51c77007319 265 /**
mbed_official 52:a51c77007319 266 * @}
mbed_official 52:a51c77007319 267 */
mbed_official 52:a51c77007319 268
mbed_official 52:a51c77007319 269 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/