Rev 56 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 77 | mjames | 1 | /** |
| 2 | ****************************************************************************** |
||
| 3 | * @file stm32l1xx_ll_gpio.c |
||
| 4 | * @author MCD Application Team |
||
| 5 | * @brief GPIO LL module driver. |
||
| 6 | ****************************************************************************** |
||
| 7 | * @attention |
||
| 8 | * |
||
| 9 | * Copyright (c) 2017 STMicroelectronics. |
||
| 10 | * All rights reserved. |
||
| 11 | * |
||
| 12 | * This software is licensed under terms that can be found in the LICENSE file |
||
| 13 | * in the root directory of this software component. |
||
| 14 | * If no LICENSE file comes with this software, it is provided AS-IS. |
||
| 15 | * |
||
| 16 | ****************************************************************************** |
||
| 17 | */ |
||
| 18 | #if defined(USE_FULL_LL_DRIVER) |
||
| 19 | |||
| 20 | /* Includes ------------------------------------------------------------------*/ |
||
| 21 | #include "stm32l1xx_ll_gpio.h" |
||
| 22 | #include "stm32l1xx_ll_bus.h" |
||
| 23 | #ifdef USE_FULL_ASSERT |
||
| 24 | #include "stm32_assert.h" |
||
| 25 | #else |
||
| 26 | #define assert_param(expr) ((void)0U) |
||
| 27 | #endif |
||
| 28 | |||
| 29 | /** @addtogroup STM32L1xx_LL_Driver |
||
| 30 | * @{ |
||
| 31 | */ |
||
| 32 | |||
| 33 | #if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) || defined (GPIOH) |
||
| 34 | |||
| 35 | /** @addtogroup GPIO_LL |
||
| 36 | * @{ |
||
| 37 | */ |
||
| 38 | |||
| 39 | /* Private types -------------------------------------------------------------*/ |
||
| 40 | /* Private variables ---------------------------------------------------------*/ |
||
| 41 | /* Private constants ---------------------------------------------------------*/ |
||
| 42 | /* Private macros ------------------------------------------------------------*/ |
||
| 43 | /** @addtogroup GPIO_LL_Private_Macros |
||
| 44 | * @{ |
||
| 45 | */ |
||
| 46 | #define IS_LL_GPIO_PIN(__VALUE__) (((0x00000000U) < (__VALUE__)) && ((__VALUE__) <= (LL_GPIO_PIN_ALL))) |
||
| 47 | |||
| 48 | #define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_INPUT) ||\ |
||
| 49 | ((__VALUE__) == LL_GPIO_MODE_OUTPUT) ||\ |
||
| 50 | ((__VALUE__) == LL_GPIO_MODE_ALTERNATE) ||\ |
||
| 51 | ((__VALUE__) == LL_GPIO_MODE_ANALOG)) |
||
| 52 | |||
| 53 | #define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) ||\ |
||
| 54 | ((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN)) |
||
| 55 | |||
| 56 | #define IS_LL_GPIO_SPEED(__VALUE__) (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW) ||\ |
||
| 57 | ((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM) ||\ |
||
| 58 | ((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH) ||\ |
||
| 59 | ((__VALUE__) == LL_GPIO_SPEED_FREQ_VERY_HIGH)) |
||
| 60 | |||
| 61 | #define IS_LL_GPIO_PULL(__VALUE__) (((__VALUE__) == LL_GPIO_PULL_NO) ||\ |
||
| 62 | ((__VALUE__) == LL_GPIO_PULL_UP) ||\ |
||
| 63 | ((__VALUE__) == LL_GPIO_PULL_DOWN)) |
||
| 64 | |||
| 65 | #define IS_LL_GPIO_ALTERNATE(__VALUE__) (((__VALUE__) == LL_GPIO_AF_0 ) ||\ |
||
| 66 | ((__VALUE__) == LL_GPIO_AF_1 ) ||\ |
||
| 67 | ((__VALUE__) == LL_GPIO_AF_2 ) ||\ |
||
| 68 | ((__VALUE__) == LL_GPIO_AF_3 ) ||\ |
||
| 69 | ((__VALUE__) == LL_GPIO_AF_4 ) ||\ |
||
| 70 | ((__VALUE__) == LL_GPIO_AF_5 ) ||\ |
||
| 71 | ((__VALUE__) == LL_GPIO_AF_6 ) ||\ |
||
| 72 | ((__VALUE__) == LL_GPIO_AF_7 ) ||\ |
||
| 73 | ((__VALUE__) == LL_GPIO_AF_8 ) ||\ |
||
| 74 | ((__VALUE__) == LL_GPIO_AF_9 ) ||\ |
||
| 75 | ((__VALUE__) == LL_GPIO_AF_10 ) ||\ |
||
| 76 | ((__VALUE__) == LL_GPIO_AF_11 ) ||\ |
||
| 77 | ((__VALUE__) == LL_GPIO_AF_12 ) ||\ |
||
| 78 | ((__VALUE__) == LL_GPIO_AF_13 ) ||\ |
||
| 79 | ((__VALUE__) == LL_GPIO_AF_14 ) ||\ |
||
| 80 | ((__VALUE__) == LL_GPIO_AF_15 )) |
||
| 81 | /** |
||
| 82 | * @} |
||
| 83 | */ |
||
| 84 | |||
| 85 | /* Private function prototypes -----------------------------------------------*/ |
||
| 86 | |||
| 87 | /* Exported functions --------------------------------------------------------*/ |
||
| 88 | /** @addtogroup GPIO_LL_Exported_Functions |
||
| 89 | * @{ |
||
| 90 | */ |
||
| 91 | |||
| 92 | /** @addtogroup GPIO_LL_EF_Init |
||
| 93 | * @{ |
||
| 94 | */ |
||
| 95 | |||
| 96 | /** |
||
| 97 | * @brief De-initialize GPIO registers (Registers restored to their default values). |
||
| 98 | * @param GPIOx GPIO Port |
||
| 99 | * @retval An ErrorStatus enumeration value: |
||
| 100 | * - SUCCESS: GPIO registers are de-initialized |
||
| 101 | * - ERROR: Wrong GPIO Port |
||
| 102 | */ |
||
| 103 | ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx) |
||
| 104 | { |
||
| 105 | ErrorStatus status = SUCCESS; |
||
| 106 | |||
| 107 | /* Check the parameters */ |
||
| 108 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
||
| 109 | |||
| 110 | /* Force and Release reset on clock of GPIOx Port */ |
||
| 111 | if (GPIOx == GPIOA) |
||
| 112 | { |
||
| 113 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOA); |
||
| 114 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOA); |
||
| 115 | } |
||
| 116 | else if (GPIOx == GPIOB) |
||
| 117 | { |
||
| 118 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOB); |
||
| 119 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOB); |
||
| 120 | } |
||
| 121 | else if (GPIOx == GPIOC) |
||
| 122 | { |
||
| 123 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOC); |
||
| 124 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOC); |
||
| 125 | } |
||
| 126 | #if defined(GPIOD) |
||
| 127 | else if (GPIOx == GPIOD) |
||
| 128 | { |
||
| 129 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOD); |
||
| 130 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOD); |
||
| 131 | } |
||
| 132 | #endif /* GPIOD */ |
||
| 133 | #if defined(GPIOE) |
||
| 134 | else if (GPIOx == GPIOE) |
||
| 135 | { |
||
| 136 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOE); |
||
| 137 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOE); |
||
| 138 | } |
||
| 139 | #endif /* GPIOE */ |
||
| 140 | #if defined(GPIOF) |
||
| 141 | else if (GPIOx == GPIOF) |
||
| 142 | { |
||
| 143 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOF); |
||
| 144 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOF); |
||
| 145 | } |
||
| 146 | #endif /* GPIOF */ |
||
| 147 | #if defined(GPIOG) |
||
| 148 | else if (GPIOx == GPIOG) |
||
| 149 | { |
||
| 150 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOG); |
||
| 151 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOG); |
||
| 152 | } |
||
| 153 | #endif /* GPIOG */ |
||
| 154 | #if defined(GPIOH) |
||
| 155 | else if (GPIOx == GPIOH) |
||
| 156 | { |
||
| 157 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOH); |
||
| 158 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOH); |
||
| 159 | } |
||
| 160 | #endif /* GPIOH */ |
||
| 161 | else |
||
| 162 | { |
||
| 163 | status = ERROR; |
||
| 164 | } |
||
| 165 | |||
| 166 | return (status); |
||
| 167 | } |
||
| 168 | |||
| 169 | /** |
||
| 170 | * @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct. |
||
| 171 | * @param GPIOx GPIO Port |
||
| 172 | * @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure |
||
| 173 | * that contains the configuration information for the specified GPIO peripheral. |
||
| 174 | * @retval An ErrorStatus enumeration value: |
||
| 175 | * - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content |
||
| 176 | * - ERROR: Not applicable |
||
| 177 | */ |
||
| 178 | ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct) |
||
| 179 | { |
||
| 180 | uint32_t pinpos = 0x00000000U; |
||
| 181 | uint32_t currentpin = 0x00000000U; |
||
| 182 | |||
| 183 | /* Check the parameters */ |
||
| 184 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
||
| 185 | assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin)); |
||
| 186 | assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode)); |
||
| 187 | assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull)); |
||
| 188 | |||
| 189 | /* ------------------------- Configure the port pins ---------------- */ |
||
| 190 | /* Initialize pinpos on first pin set */ |
||
| 191 | pinpos = POSITION_VAL(GPIO_InitStruct->Pin); |
||
| 192 | |||
| 193 | /* Configure the port pins */ |
||
| 194 | while (((GPIO_InitStruct->Pin) >> pinpos) != 0x00000000U) |
||
| 195 | { |
||
| 196 | /* Get current io position */ |
||
| 197 | currentpin = (GPIO_InitStruct->Pin) & (0x00000001U << pinpos); |
||
| 198 | |||
| 199 | if (currentpin) |
||
| 200 | { |
||
| 201 | |||
| 202 | if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)) |
||
| 203 | { |
||
| 204 | /* Check Speed mode parameters */ |
||
| 205 | assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed)); |
||
| 206 | |||
| 207 | /* Speed mode configuration */ |
||
| 208 | LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed); |
||
| 209 | |||
| 210 | /* Check Output mode parameters */ |
||
| 211 | assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType)); |
||
| 212 | |||
| 213 | /* Output mode configuration*/ |
||
| 214 | LL_GPIO_SetPinOutputType(GPIOx, currentpin, GPIO_InitStruct->OutputType); |
||
| 215 | } |
||
| 216 | |||
| 217 | /* Pull-up Pull down resistor configuration*/ |
||
| 218 | LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull); |
||
| 219 | |||
| 220 | if (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE) |
||
| 221 | { |
||
| 222 | /* Check Alternate parameter */ |
||
| 223 | assert_param(IS_LL_GPIO_ALTERNATE(GPIO_InitStruct->Alternate)); |
||
| 224 | |||
| 225 | /* Speed mode configuration */ |
||
| 226 | if (POSITION_VAL(currentpin) < 0x00000008U) |
||
| 227 | { |
||
| 228 | LL_GPIO_SetAFPin_0_7(GPIOx, currentpin, GPIO_InitStruct->Alternate); |
||
| 229 | } |
||
| 230 | else |
||
| 231 | { |
||
| 232 | LL_GPIO_SetAFPin_8_15(GPIOx, currentpin, GPIO_InitStruct->Alternate); |
||
| 233 | } |
||
| 234 | } |
||
| 235 | |||
| 236 | /* Pin Mode configuration */ |
||
| 237 | LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode); |
||
| 238 | } |
||
| 239 | pinpos++; |
||
| 240 | } |
||
| 241 | |||
| 242 | return (SUCCESS); |
||
| 243 | } |
||
| 244 | |||
| 245 | /** |
||
| 246 | * @brief Set each @ref LL_GPIO_InitTypeDef field to default value. |
||
| 247 | * @param GPIO_InitStruct: pointer to a @ref LL_GPIO_InitTypeDef structure |
||
| 248 | * whose fields will be set to default values. |
||
| 249 | * @retval None |
||
| 250 | */ |
||
| 251 | |||
| 252 | void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct) |
||
| 253 | { |
||
| 254 | /* Reset GPIO init structure parameters values */ |
||
| 255 | GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL; |
||
| 256 | GPIO_InitStruct->Mode = LL_GPIO_MODE_ANALOG; |
||
| 257 | GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW; |
||
| 258 | GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_PUSHPULL; |
||
| 259 | GPIO_InitStruct->Pull = LL_GPIO_PULL_NO; |
||
| 260 | GPIO_InitStruct->Alternate = LL_GPIO_AF_0; |
||
| 261 | } |
||
| 262 | |||
| 263 | /** |
||
| 264 | * @} |
||
| 265 | */ |
||
| 266 | |||
| 267 | /** |
||
| 268 | * @} |
||
| 269 | */ |
||
| 270 | |||
| 271 | /** |
||
| 272 | * @} |
||
| 273 | */ |
||
| 274 | |||
| 275 | #endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) || defined (GPIOH) */ |
||
| 276 | |||
| 277 | /** |
||
| 278 | * @} |
||
| 279 | */ |
||
| 280 | |||
| 281 | #endif /* USE_FULL_LL_DRIVER */ |
||
| 282 |