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mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_STM/TARGET_STM32F0/device/stm32f0xx_ll_exti.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
180:96ed750bd169 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 156:95d6b41a828b 1 /**
<> 156:95d6b41a828b 2 ******************************************************************************
<> 156:95d6b41a828b 3 * @file stm32f0xx_ll_exti.c
<> 156:95d6b41a828b 4 * @author MCD Application Team
<> 156:95d6b41a828b 5 * @brief EXTI LL module driver.
<> 156:95d6b41a828b 6 ******************************************************************************
<> 156:95d6b41a828b 7 * @attention
<> 156:95d6b41a828b 8 *
<> 156:95d6b41a828b 9 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
<> 156:95d6b41a828b 10 *
<> 156:95d6b41a828b 11 * Redistribution and use in source and binary forms, with or without modification,
<> 156:95d6b41a828b 12 * are permitted provided that the following conditions are met:
<> 156:95d6b41a828b 13 * 1. Redistributions of source code must retain the above copyright notice,
<> 156:95d6b41a828b 14 * this list of conditions and the following disclaimer.
<> 156:95d6b41a828b 15 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 156:95d6b41a828b 16 * this list of conditions and the following disclaimer in the documentation
<> 156:95d6b41a828b 17 * and/or other materials provided with the distribution.
<> 156:95d6b41a828b 18 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 156:95d6b41a828b 19 * may be used to endorse or promote products derived from this software
<> 156:95d6b41a828b 20 * without specific prior written permission.
<> 156:95d6b41a828b 21 *
<> 156:95d6b41a828b 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 156:95d6b41a828b 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 156:95d6b41a828b 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 156:95d6b41a828b 25 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 156:95d6b41a828b 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 156:95d6b41a828b 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 156:95d6b41a828b 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 156:95d6b41a828b 29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 156:95d6b41a828b 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 156:95d6b41a828b 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 156:95d6b41a828b 32 *
<> 156:95d6b41a828b 33 ******************************************************************************
<> 156:95d6b41a828b 34 */
<> 156:95d6b41a828b 35 #if defined(USE_FULL_LL_DRIVER)
<> 156:95d6b41a828b 36
<> 156:95d6b41a828b 37 /* Includes ------------------------------------------------------------------*/
<> 156:95d6b41a828b 38 #include "stm32f0xx_ll_exti.h"
<> 156:95d6b41a828b 39 #ifdef USE_FULL_ASSERT
<> 156:95d6b41a828b 40 #include "stm32_assert.h"
<> 156:95d6b41a828b 41 #else
<> 156:95d6b41a828b 42 #define assert_param(expr) ((void)0U)
<> 156:95d6b41a828b 43 #endif
<> 156:95d6b41a828b 44
<> 156:95d6b41a828b 45 /** @addtogroup STM32F0xx_LL_Driver
<> 156:95d6b41a828b 46 * @{
<> 156:95d6b41a828b 47 */
<> 156:95d6b41a828b 48
<> 156:95d6b41a828b 49 #if defined (EXTI)
<> 156:95d6b41a828b 50
<> 156:95d6b41a828b 51 /** @defgroup EXTI_LL EXTI
<> 156:95d6b41a828b 52 * @{
<> 156:95d6b41a828b 53 */
<> 156:95d6b41a828b 54
<> 156:95d6b41a828b 55 /* Private types -------------------------------------------------------------*/
<> 156:95d6b41a828b 56 /* Private variables ---------------------------------------------------------*/
<> 156:95d6b41a828b 57 /* Private constants ---------------------------------------------------------*/
<> 156:95d6b41a828b 58 /* Private macros ------------------------------------------------------------*/
<> 156:95d6b41a828b 59 /** @addtogroup EXTI_LL_Private_Macros
<> 156:95d6b41a828b 60 * @{
<> 156:95d6b41a828b 61 */
<> 156:95d6b41a828b 62
<> 156:95d6b41a828b 63 #define IS_LL_EXTI_LINE_0_31(__VALUE__) (((__VALUE__) & ~LL_EXTI_LINE_ALL_0_31) == 0x00000000U)
<> 156:95d6b41a828b 64
<> 156:95d6b41a828b 65 #define IS_LL_EXTI_MODE(__VALUE__) (((__VALUE__) == LL_EXTI_MODE_IT) \
<> 156:95d6b41a828b 66 || ((__VALUE__) == LL_EXTI_MODE_EVENT) \
<> 156:95d6b41a828b 67 || ((__VALUE__) == LL_EXTI_MODE_IT_EVENT))
<> 156:95d6b41a828b 68
<> 156:95d6b41a828b 69
<> 156:95d6b41a828b 70 #define IS_LL_EXTI_TRIGGER(__VALUE__) (((__VALUE__) == LL_EXTI_TRIGGER_NONE) \
<> 156:95d6b41a828b 71 || ((__VALUE__) == LL_EXTI_TRIGGER_RISING) \
<> 156:95d6b41a828b 72 || ((__VALUE__) == LL_EXTI_TRIGGER_FALLING) \
<> 156:95d6b41a828b 73 || ((__VALUE__) == LL_EXTI_TRIGGER_RISING_FALLING))
<> 156:95d6b41a828b 74
<> 156:95d6b41a828b 75 /**
<> 156:95d6b41a828b 76 * @}
<> 156:95d6b41a828b 77 */
<> 156:95d6b41a828b 78
<> 156:95d6b41a828b 79 /* Private function prototypes -----------------------------------------------*/
<> 156:95d6b41a828b 80
<> 156:95d6b41a828b 81 /* Exported functions --------------------------------------------------------*/
<> 156:95d6b41a828b 82 /** @addtogroup EXTI_LL_Exported_Functions
<> 156:95d6b41a828b 83 * @{
<> 156:95d6b41a828b 84 */
<> 156:95d6b41a828b 85
<> 156:95d6b41a828b 86 /** @addtogroup EXTI_LL_EF_Init
<> 156:95d6b41a828b 87 * @{
<> 156:95d6b41a828b 88 */
<> 156:95d6b41a828b 89
<> 156:95d6b41a828b 90 /**
<> 156:95d6b41a828b 91 * @brief De-initialize the EXTI registers to their default reset values.
<> 156:95d6b41a828b 92 * @retval An ErrorStatus enumeration value:
<> 156:95d6b41a828b 93 * - SUCCESS: EXTI registers are de-initialized
<> 156:95d6b41a828b 94 * - ERROR: not applicable
<> 156:95d6b41a828b 95 */
<> 156:95d6b41a828b 96 uint32_t LL_EXTI_DeInit(void)
<> 156:95d6b41a828b 97 {
<> 156:95d6b41a828b 98 /* Interrupt mask register set to default reset values */
<> 156:95d6b41a828b 99 #if defined(STM32F030x6) || defined(STM32F031x6) ||defined(STM32F038xx)
<> 156:95d6b41a828b 100 LL_EXTI_WriteReg(IMR, 0x0FF40000U);
<> 156:95d6b41a828b 101 #elif defined(STM32F070x6) || defined(STM32F042x6) || defined(STM32F048xx)
<> 156:95d6b41a828b 102 LL_EXTI_WriteReg(IMR, 0x7FF40000U);
<> 156:95d6b41a828b 103 #elif defined(STM32F030x8) || defined(STM32F051x8) || defined(STM32F058xx)
<> 156:95d6b41a828b 104 LL_EXTI_WriteReg(IMR, 0x0F940000U);
<> 156:95d6b41a828b 105 #else
<> 156:95d6b41a828b 106 LL_EXTI_WriteReg(IMR, 0x7F840000U);
<> 156:95d6b41a828b 107 #endif
<> 156:95d6b41a828b 108 /* Event mask register set to default reset values */
<> 156:95d6b41a828b 109 LL_EXTI_WriteReg(EMR, 0x00000000U);
<> 156:95d6b41a828b 110 /* Rising Trigger selection register set to default reset values */
<> 156:95d6b41a828b 111 LL_EXTI_WriteReg(RTSR, 0x00000000U);
<> 156:95d6b41a828b 112 /* Falling Trigger selection register set to default reset values */
<> 156:95d6b41a828b 113 LL_EXTI_WriteReg(FTSR, 0x00000000U);
<> 156:95d6b41a828b 114 /* Software interrupt event register set to default reset values */
<> 156:95d6b41a828b 115 LL_EXTI_WriteReg(SWIER, 0x00000000U);
Anna Bridge 180:96ed750bd169 116 /* Pending register clear */
<> 156:95d6b41a828b 117 LL_EXTI_WriteReg(PR, 0x007BFFFFU);
<> 156:95d6b41a828b 118
<> 156:95d6b41a828b 119 return SUCCESS;
<> 156:95d6b41a828b 120 }
<> 156:95d6b41a828b 121
<> 156:95d6b41a828b 122 /**
<> 156:95d6b41a828b 123 * @brief Initialize the EXTI registers according to the specified parameters in EXTI_InitStruct.
<> 156:95d6b41a828b 124 * @param EXTI_InitStruct pointer to a @ref LL_EXTI_InitTypeDef structure.
<> 156:95d6b41a828b 125 * @retval An ErrorStatus enumeration value:
<> 156:95d6b41a828b 126 * - SUCCESS: EXTI registers are initialized
<> 156:95d6b41a828b 127 * - ERROR: not applicable
<> 156:95d6b41a828b 128 */
<> 156:95d6b41a828b 129 uint32_t LL_EXTI_Init(LL_EXTI_InitTypeDef *EXTI_InitStruct)
<> 156:95d6b41a828b 130 {
<> 156:95d6b41a828b 131 ErrorStatus status = SUCCESS;
<> 156:95d6b41a828b 132 /* Check the parameters */
<> 156:95d6b41a828b 133 assert_param(IS_LL_EXTI_LINE_0_31(EXTI_InitStruct->Line_0_31));
<> 156:95d6b41a828b 134 assert_param(IS_FUNCTIONAL_STATE(EXTI_InitStruct->LineCommand));
<> 156:95d6b41a828b 135 assert_param(IS_LL_EXTI_MODE(EXTI_InitStruct->Mode));
<> 156:95d6b41a828b 136
<> 156:95d6b41a828b 137 /* ENABLE LineCommand */
<> 156:95d6b41a828b 138 if (EXTI_InitStruct->LineCommand != DISABLE)
<> 156:95d6b41a828b 139 {
<> 156:95d6b41a828b 140 assert_param(IS_LL_EXTI_TRIGGER(EXTI_InitStruct->Trigger));
<> 156:95d6b41a828b 141
<> 156:95d6b41a828b 142 /* Configure EXTI Lines in range from 0 to 31 */
<> 156:95d6b41a828b 143 if (EXTI_InitStruct->Line_0_31 != LL_EXTI_LINE_NONE)
<> 156:95d6b41a828b 144 {
<> 156:95d6b41a828b 145 switch (EXTI_InitStruct->Mode)
<> 156:95d6b41a828b 146 {
<> 156:95d6b41a828b 147 case LL_EXTI_MODE_IT:
<> 156:95d6b41a828b 148 /* First Disable Event on provided Lines */
<> 156:95d6b41a828b 149 LL_EXTI_DisableEvent_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 150 /* Then Enable IT on provided Lines */
<> 156:95d6b41a828b 151 LL_EXTI_EnableIT_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 152 break;
<> 156:95d6b41a828b 153 case LL_EXTI_MODE_EVENT:
<> 156:95d6b41a828b 154 /* First Disable IT on provided Lines */
<> 156:95d6b41a828b 155 LL_EXTI_DisableIT_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 156 /* Then Enable Event on provided Lines */
<> 156:95d6b41a828b 157 LL_EXTI_EnableEvent_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 158 break;
<> 156:95d6b41a828b 159 case LL_EXTI_MODE_IT_EVENT:
<> 156:95d6b41a828b 160 /* Directly Enable IT & Event on provided Lines */
<> 156:95d6b41a828b 161 LL_EXTI_EnableIT_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 162 LL_EXTI_EnableEvent_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 163 break;
<> 156:95d6b41a828b 164 default:
<> 156:95d6b41a828b 165 status = ERROR;
<> 156:95d6b41a828b 166 break;
<> 156:95d6b41a828b 167 }
<> 156:95d6b41a828b 168 if (EXTI_InitStruct->Trigger != LL_EXTI_TRIGGER_NONE)
<> 156:95d6b41a828b 169 {
<> 156:95d6b41a828b 170 switch (EXTI_InitStruct->Trigger)
<> 156:95d6b41a828b 171 {
<> 156:95d6b41a828b 172 case LL_EXTI_TRIGGER_RISING:
<> 156:95d6b41a828b 173 /* First Disable Falling Trigger on provided Lines */
<> 156:95d6b41a828b 174 LL_EXTI_DisableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 175 /* Then Enable Rising Trigger on provided Lines */
<> 156:95d6b41a828b 176 LL_EXTI_EnableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 177 break;
<> 156:95d6b41a828b 178 case LL_EXTI_TRIGGER_FALLING:
<> 156:95d6b41a828b 179 /* First Disable Rising Trigger on provided Lines */
<> 156:95d6b41a828b 180 LL_EXTI_DisableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 181 /* Then Enable Falling Trigger on provided Lines */
<> 156:95d6b41a828b 182 LL_EXTI_EnableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 183 break;
<> 156:95d6b41a828b 184 case LL_EXTI_TRIGGER_RISING_FALLING:
<> 156:95d6b41a828b 185 LL_EXTI_EnableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 186 LL_EXTI_EnableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 187 break;
<> 156:95d6b41a828b 188 default:
<> 156:95d6b41a828b 189 status = ERROR;
<> 156:95d6b41a828b 190 break;
<> 156:95d6b41a828b 191 }
<> 156:95d6b41a828b 192 }
<> 156:95d6b41a828b 193 }
<> 156:95d6b41a828b 194 }
<> 156:95d6b41a828b 195 /* DISABLE LineCommand */
<> 156:95d6b41a828b 196 else
<> 156:95d6b41a828b 197 {
<> 156:95d6b41a828b 198 /* De-configure EXTI Lines in range from 0 to 31 */
<> 156:95d6b41a828b 199 LL_EXTI_DisableIT_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 200 LL_EXTI_DisableEvent_0_31(EXTI_InitStruct->Line_0_31);
<> 156:95d6b41a828b 201 }
<> 156:95d6b41a828b 202 return status;
<> 156:95d6b41a828b 203 }
<> 156:95d6b41a828b 204
<> 156:95d6b41a828b 205 /**
<> 156:95d6b41a828b 206 * @brief Set each @ref LL_EXTI_InitTypeDef field to default value.
<> 156:95d6b41a828b 207 * @param EXTI_InitStruct Pointer to a @ref LL_EXTI_InitTypeDef structure.
<> 156:95d6b41a828b 208 * @retval None
<> 156:95d6b41a828b 209 */
<> 156:95d6b41a828b 210 void LL_EXTI_StructInit(LL_EXTI_InitTypeDef *EXTI_InitStruct)
<> 156:95d6b41a828b 211 {
<> 156:95d6b41a828b 212 EXTI_InitStruct->Line_0_31 = LL_EXTI_LINE_NONE;
<> 156:95d6b41a828b 213 EXTI_InitStruct->LineCommand = DISABLE;
<> 156:95d6b41a828b 214 EXTI_InitStruct->Mode = LL_EXTI_MODE_IT;
<> 156:95d6b41a828b 215 EXTI_InitStruct->Trigger = LL_EXTI_TRIGGER_FALLING;
<> 156:95d6b41a828b 216 }
<> 156:95d6b41a828b 217
<> 156:95d6b41a828b 218 /**
<> 156:95d6b41a828b 219 * @}
<> 156:95d6b41a828b 220 */
<> 156:95d6b41a828b 221
<> 156:95d6b41a828b 222 /**
<> 156:95d6b41a828b 223 * @}
<> 156:95d6b41a828b 224 */
<> 156:95d6b41a828b 225
<> 156:95d6b41a828b 226 /**
<> 156:95d6b41a828b 227 * @}
<> 156:95d6b41a828b 228 */
<> 156:95d6b41a828b 229
<> 156:95d6b41a828b 230 #endif /* defined (EXTI) */
<> 156:95d6b41a828b 231
<> 156:95d6b41a828b 232 /**
<> 156:95d6b41a828b 233 * @}
<> 156:95d6b41a828b 234 */
<> 156:95d6b41a828b 235
<> 156:95d6b41a828b 236 #endif /* USE_FULL_LL_DRIVER */
<> 156:95d6b41a828b 237
<> 156:95d6b41a828b 238 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/