| 提交 | 用户 | age | ||
| 483170 | 1 | /** |
| Q | 2 | ****************************************************************************** |
| 3 | * @file stm32f0xx_ll_gpio.c | |
| 4 | * @author MCD Application Team | |
| 5 | * @brief GPIO LL module driver. | |
| 6 | ****************************************************************************** | |
| 7 | * @attention | |
| 8 | * | |
| 9 | * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> | |
| 10 | * | |
| 11 | * Redistribution and use in source and binary forms, with or without modification, | |
| 12 | * are permitted provided that the following conditions are met: | |
| 13 | * 1. Redistributions of source code must retain the above copyright notice, | |
| 14 | * this list of conditions and the following disclaimer. | |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 16 | * this list of conditions and the following disclaimer in the documentation | |
| 17 | * and/or other materials provided with the distribution. | |
| 18 | * 3. Neither the name of STMicroelectronics nor the names of its contributors | |
| 19 | * may be used to endorse or promote products derived from this software | |
| 20 | * without specific prior written permission. | |
| 21 | * | |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 23 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 25 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
| 28 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |
| 29 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
| 30 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 32 | * | |
| 33 | ****************************************************************************** | |
| 34 | */ | |
| 35 | #if defined(USE_FULL_LL_DRIVER) | |
| 36 | ||
| 37 | /* Includes ------------------------------------------------------------------*/ | |
| 38 | #include "stm32f0xx_ll_gpio.h" | |
| 39 | #include "stm32f0xx_ll_bus.h" | |
| 40 | #ifdef USE_FULL_ASSERT | |
| 41 | #include "stm32_assert.h" | |
| 42 | #else | |
| 43 | #define assert_param(expr) ((void)0U) | |
| 44 | #endif | |
| 45 | ||
| 46 | /** @addtogroup STM32F0xx_LL_Driver | |
| 47 | * @{ | |
| 48 | */ | |
| 49 | ||
| 50 | #if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) | |
| 51 | ||
| 52 | /** @addtogroup GPIO_LL | |
| 53 | * @{ | |
| 54 | */ | |
| 55 | ||
| 56 | /* Private types -------------------------------------------------------------*/ | |
| 57 | /* Private variables ---------------------------------------------------------*/ | |
| 58 | /* Private constants ---------------------------------------------------------*/ | |
| 59 | /* Private macros ------------------------------------------------------------*/ | |
| 60 | /** @addtogroup GPIO_LL_Private_Macros | |
| 61 | * @{ | |
| 62 | */ | |
| 63 | #define IS_LL_GPIO_PIN(__VALUE__) (((0x00000000U) < (__VALUE__)) && ((__VALUE__) <= (LL_GPIO_PIN_ALL))) | |
| 64 | ||
| 65 | #define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_INPUT) ||\ | |
| 66 | ((__VALUE__) == LL_GPIO_MODE_OUTPUT) ||\ | |
| 67 | ((__VALUE__) == LL_GPIO_MODE_ALTERNATE) ||\ | |
| 68 | ((__VALUE__) == LL_GPIO_MODE_ANALOG)) | |
| 69 | ||
| 70 | #define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) ||\ | |
| 71 | ((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN)) | |
| 72 | ||
| 73 | #define IS_LL_GPIO_SPEED(__VALUE__) (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW) ||\ | |
| 74 | ((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM) ||\ | |
| 75 | ((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH)) | |
| 76 | ||
| 77 | #define IS_LL_GPIO_PULL(__VALUE__) (((__VALUE__) == LL_GPIO_PULL_NO) ||\ | |
| 78 | ((__VALUE__) == LL_GPIO_PULL_UP) ||\ | |
| 79 | ((__VALUE__) == LL_GPIO_PULL_DOWN)) | |
| 80 | ||
| 81 | #define IS_LL_GPIO_ALTERNATE(__VALUE__) (((__VALUE__) == LL_GPIO_AF_0 ) ||\ | |
| 82 | ((__VALUE__) == LL_GPIO_AF_1 ) ||\ | |
| 83 | ((__VALUE__) == LL_GPIO_AF_2 ) ||\ | |
| 84 | ((__VALUE__) == LL_GPIO_AF_3 ) ||\ | |
| 85 | ((__VALUE__) == LL_GPIO_AF_4 ) ||\ | |
| 86 | ((__VALUE__) == LL_GPIO_AF_5 ) ||\ | |
| 87 | ((__VALUE__) == LL_GPIO_AF_6 ) ||\ | |
| 88 | ((__VALUE__) == LL_GPIO_AF_7 )) | |
| 89 | /** | |
| 90 | * @} | |
| 91 | */ | |
| 92 | ||
| 93 | /* Private function prototypes -----------------------------------------------*/ | |
| 94 | ||
| 95 | /* Exported functions --------------------------------------------------------*/ | |
| 96 | /** @addtogroup GPIO_LL_Exported_Functions | |
| 97 | * @{ | |
| 98 | */ | |
| 99 | ||
| 100 | /** @addtogroup GPIO_LL_EF_Init | |
| 101 | * @{ | |
| 102 | */ | |
| 103 | ||
| 104 | /** | |
| 105 | * @brief De-initialize GPIO registers (Registers restored to their default values). | |
| 106 | * @param GPIOx GPIO Port | |
| 107 | * @retval An ErrorStatus enumeration value: | |
| 108 | * - SUCCESS: GPIO registers are de-initialized | |
| 109 | * - ERROR: Wrong GPIO Port | |
| 110 | */ | |
| 111 | ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx) | |
| 112 | { | |
| 113 | ErrorStatus status = SUCCESS; | |
| 114 | ||
| 115 | /* Check the parameters */ | |
| 116 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); | |
| 117 | ||
| 118 | /* Force and Release reset on clock of GPIOx Port */ | |
| 119 | if (GPIOx == GPIOA) | |
| 120 | { | |
| 121 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOA); | |
| 122 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOA); | |
| 123 | } | |
| 124 | else if (GPIOx == GPIOB) | |
| 125 | { | |
| 126 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOB); | |
| 127 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOB); | |
| 128 | } | |
| 129 | else if (GPIOx == GPIOC) | |
| 130 | { | |
| 131 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOC); | |
| 132 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOC); | |
| 133 | } | |
| 134 | #if defined(GPIOD) | |
| 135 | else if (GPIOx == GPIOD) | |
| 136 | { | |
| 137 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOD); | |
| 138 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOD); | |
| 139 | } | |
| 140 | #endif /* GPIOD */ | |
| 141 | #if defined(GPIOE) | |
| 142 | else if (GPIOx == GPIOE) | |
| 143 | { | |
| 144 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOE); | |
| 145 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOE); | |
| 146 | } | |
| 147 | #endif /* GPIOE */ | |
| 148 | #if defined(GPIOF) | |
| 149 | else if (GPIOx == GPIOF) | |
| 150 | { | |
| 151 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOF); | |
| 152 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOF); | |
| 153 | } | |
| 154 | #endif /* GPIOF */ | |
| 155 | else | |
| 156 | { | |
| 157 | status = ERROR; | |
| 158 | } | |
| 159 | ||
| 160 | return (status); | |
| 161 | } | |
| 162 | ||
| 163 | /** | |
| 164 | * @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct. | |
| 165 | * @param GPIOx GPIO Port | |
| 166 | * @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure | |
| 167 | * that contains the configuration information for the specified GPIO peripheral. | |
| 168 | * @retval An ErrorStatus enumeration value: | |
| 169 | * - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content | |
| 170 | * - ERROR: Not applicable | |
| 171 | */ | |
| 172 | ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct) | |
| 173 | { | |
| 174 | uint32_t pinpos = 0x00000000U; | |
| 175 | uint32_t currentpin = 0x00000000U; | |
| 176 | ||
| 177 | /* Check the parameters */ | |
| 178 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); | |
| 179 | assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin)); | |
| 180 | assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode)); | |
| 181 | assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull)); | |
| 182 | ||
| 183 | /* ------------------------- Configure the port pins ---------------- */ | |
| 184 | /* Initialize pinpos on first pin set */ | |
| 185 | /* pinpos = 0; useless as already done in default initialization */ | |
| 186 | ||
| 187 | /* Configure the port pins */ | |
| 188 | while (((GPIO_InitStruct->Pin) >> pinpos) != 0x00000000U) | |
| 189 | { | |
| 190 | /* Get current io position */ | |
| 191 | currentpin = (GPIO_InitStruct->Pin) & (0x00000001U << pinpos); | |
| 192 | ||
| 193 | if (currentpin) | |
| 194 | { | |
| 195 | /* Pin Mode configuration */ | |
| 196 | LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode); | |
| 197 | ||
| 198 | if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)) | |
| 199 | { | |
| 200 | /* Check Speed mode parameters */ | |
| 201 | assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed)); | |
| 202 | ||
| 203 | /* Speed mode configuration */ | |
| 204 | LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed); | |
| 205 | } | |
| 206 | ||
| 207 | /* Pull-up Pull down resistor configuration*/ | |
| 208 | LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull); | |
| 209 | ||
| 210 | if (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE) | |
| 211 | { | |
| 212 | /* Check Alternate parameter */ | |
| 213 | assert_param(IS_LL_GPIO_ALTERNATE(GPIO_InitStruct->Alternate)); | |
| 214 | ||
| 215 | /* Speed mode configuration */ | |
| 216 | if (currentpin < LL_GPIO_PIN_8) | |
| 217 | { | |
| 218 | LL_GPIO_SetAFPin_0_7(GPIOx, currentpin, GPIO_InitStruct->Alternate); | |
| 219 | } | |
| 220 | else | |
| 221 | { | |
| 222 | LL_GPIO_SetAFPin_8_15(GPIOx, currentpin, GPIO_InitStruct->Alternate); | |
| 223 | } | |
| 224 | } | |
| 225 | } | |
| 226 | pinpos++; | |
| 227 | } | |
| 228 | ||
| 229 | if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)) | |
| 230 | { | |
| 231 | /* Check Output mode parameters */ | |
| 232 | assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType)); | |
| 233 | ||
| 234 | /* Output mode configuration*/ | |
| 235 | LL_GPIO_SetPinOutputType(GPIOx, GPIO_InitStruct->Pin, GPIO_InitStruct->OutputType); | |
| 236 | ||
| 237 | } | |
| 238 | return (SUCCESS); | |
| 239 | } | |
| 240 | ||
| 241 | /** | |
| 242 | * @brief Set each @ref LL_GPIO_InitTypeDef field to default value. | |
| 243 | * @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure | |
| 244 | * whose fields will be set to default values. | |
| 245 | * @retval None | |
| 246 | */ | |
| 247 | ||
| 248 | void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct) | |
| 249 | { | |
| 250 | /* Reset GPIO init structure parameters values */ | |
| 251 | GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL; | |
| 252 | GPIO_InitStruct->Mode = LL_GPIO_MODE_ANALOG; | |
| 253 | GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW; | |
| 254 | GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_PUSHPULL; | |
| 255 | GPIO_InitStruct->Pull = LL_GPIO_PULL_NO; | |
| 256 | GPIO_InitStruct->Alternate = LL_GPIO_AF_0; | |
| 257 | } | |
| 258 | ||
| 259 | /** | |
| 260 | * @} | |
| 261 | */ | |
| 262 | ||
| 263 | /** | |
| 264 | * @} | |
| 265 | */ | |
| 266 | ||
| 267 | /** | |
| 268 | * @} | |
| 269 | */ | |
| 270 | ||
| 271 | #endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) */ | |
| 272 | ||
| 273 | /** | |
| 274 | * @} | |
| 275 | */ | |
| 276 | ||
| 277 | #endif /* USE_FULL_LL_DRIVER */ | |
| 278 | ||
| 279 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ | |
