Rev 2 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | mjames | 1 | /** |
| 2 | ****************************************************************************** |
||
| 3 | * @file stm32f1xx_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. |
||
| 10 | * All rights reserved.</center></h2> |
||
| 11 | * |
||
| 12 | * This software component is licensed by ST under BSD 3-Clause license, |
||
| 13 | * the "License"; You may not use this file except in compliance with the |
||
| 14 | * License. You may obtain a copy of the License at: |
||
| 15 | * opensource.org/licenses/BSD-3-Clause |
||
| 16 | * |
||
| 17 | ****************************************************************************** |
||
| 18 | */ |
||
| 19 | |||
| 20 | #if defined(USE_FULL_LL_DRIVER) |
||
| 21 | |||
| 22 | /* Includes ------------------------------------------------------------------*/ |
||
| 23 | #include "stm32f1xx_ll_gpio.h" |
||
| 24 | #include "stm32f1xx_ll_bus.h" |
||
| 25 | #ifdef USE_FULL_ASSERT |
||
| 26 | #include "stm32_assert.h" |
||
| 27 | #else |
||
| 28 | #define assert_param(expr) ((void)0U) |
||
| 29 | #endif |
||
| 30 | |||
| 31 | /** @addtogroup STM32F1xx_LL_Driver |
||
| 32 | * @{ |
||
| 33 | */ |
||
| 34 | |||
| 35 | #if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) |
||
| 36 | |||
| 37 | /** @addtogroup GPIO_LL |
||
| 38 | * @{ |
||
| 39 | */ |
||
| 40 | |||
| 41 | /* Private types -------------------------------------------------------------*/ |
||
| 42 | /* Private variables ---------------------------------------------------------*/ |
||
| 43 | /* Private constants ---------------------------------------------------------*/ |
||
| 44 | /* Private macros ------------------------------------------------------------*/ |
||
| 45 | /** @addtogroup GPIO_LL_Private_Macros |
||
| 46 | * @{ |
||
| 47 | */ |
||
| 48 | |||
| 49 | #define IS_LL_GPIO_PIN(__VALUE__) ((((__VALUE__) & LL_GPIO_PIN_ALL)!= 0u) &&\ |
||
| 50 | (((__VALUE__) & (~LL_GPIO_PIN_ALL))== 0u)) |
||
| 51 | |||
| 52 | #define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_ANALOG) ||\ |
||
| 53 | ((__VALUE__) == LL_GPIO_MODE_FLOATING) ||\ |
||
| 54 | ((__VALUE__) == LL_GPIO_MODE_INPUT) ||\ |
||
| 55 | ((__VALUE__) == LL_GPIO_MODE_OUTPUT) ||\ |
||
| 56 | ((__VALUE__) == LL_GPIO_MODE_ALTERNATE)) |
||
| 57 | |||
| 58 | #define IS_LL_GPIO_SPEED(__VALUE__) (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW) ||\ |
||
| 59 | ((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM) ||\ |
||
| 60 | ((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH)) |
||
| 61 | |||
| 62 | #define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) ||\ |
||
| 63 | ((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN)) |
||
| 64 | |||
| 65 | #define IS_LL_GPIO_PULL(__VALUE__) (((__VALUE__) == LL_GPIO_PULL_DOWN) ||\ |
||
| 66 | ((__VALUE__) == LL_GPIO_PULL_UP)) |
||
| 67 | |||
| 68 | /** |
||
| 69 | * @} |
||
| 70 | */ |
||
| 71 | |||
| 72 | /* Private function prototypes -----------------------------------------------*/ |
||
| 73 | |||
| 74 | /* Exported functions --------------------------------------------------------*/ |
||
| 75 | /** @addtogroup GPIO_LL_Exported_Functions |
||
| 76 | * @{ |
||
| 77 | */ |
||
| 78 | |||
| 79 | /** @addtogroup GPIO_LL_EF_Init |
||
| 80 | * @{ |
||
| 81 | */ |
||
| 82 | |||
| 83 | /** |
||
| 84 | * @brief De-initialize GPIO registers (Registers restored to their default values). |
||
| 85 | * @param GPIOx GPIO Port |
||
| 86 | * @retval An ErrorStatus enumeration value: |
||
| 87 | * - SUCCESS: GPIO registers are de-initialized |
||
| 88 | * - ERROR: Wrong GPIO Port |
||
| 89 | */ |
||
| 90 | ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx) |
||
| 91 | { |
||
| 92 | ErrorStatus status = SUCCESS; |
||
| 93 | |||
| 94 | /* Check the parameters */ |
||
| 95 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
||
| 96 | |||
| 97 | /* Force and Release reset on clock of GPIOx Port */ |
||
| 98 | if (GPIOx == GPIOA) |
||
| 99 | { |
||
| 100 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOA); |
||
| 101 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOA); |
||
| 102 | } |
||
| 103 | else if (GPIOx == GPIOB) |
||
| 104 | { |
||
| 105 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOB); |
||
| 106 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOB); |
||
| 107 | } |
||
| 108 | else if (GPIOx == GPIOC) |
||
| 109 | { |
||
| 110 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOC); |
||
| 111 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOC); |
||
| 112 | } |
||
| 113 | else if (GPIOx == GPIOD) |
||
| 114 | { |
||
| 115 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOD); |
||
| 116 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOD); |
||
| 117 | } |
||
| 118 | #if defined(GPIOE) |
||
| 119 | else if (GPIOx == GPIOE) |
||
| 120 | { |
||
| 121 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOE); |
||
| 122 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOE); |
||
| 123 | } |
||
| 124 | #endif |
||
| 125 | #if defined(GPIOF) |
||
| 126 | else if (GPIOx == GPIOF) |
||
| 127 | { |
||
| 128 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOF); |
||
| 129 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOF); |
||
| 130 | } |
||
| 131 | #endif |
||
| 132 | #if defined(GPIOG) |
||
| 133 | else if (GPIOx == GPIOG) |
||
| 134 | { |
||
| 135 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOG); |
||
| 136 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOG); |
||
| 137 | } |
||
| 138 | #endif |
||
| 139 | else |
||
| 140 | { |
||
| 141 | status = ERROR; |
||
| 142 | } |
||
| 143 | |||
| 144 | return (status); |
||
| 145 | } |
||
| 146 | |||
| 147 | /** |
||
| 148 | * @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct. |
||
| 149 | * @param GPIOx GPIO Port |
||
| 150 | * @param GPIO_InitStruct: pointer to a @ref LL_GPIO_InitTypeDef structure |
||
| 151 | * that contains the configuration information for the specified GPIO peripheral. |
||
| 152 | * @retval An ErrorStatus enumeration value: |
||
| 153 | * - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content |
||
| 154 | * - ERROR: Not applicable |
||
| 155 | */ |
||
| 156 | ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct) |
||
| 157 | { |
||
| 158 | uint32_t pinmask; |
||
| 159 | uint32_t pinpos; |
||
| 160 | uint32_t currentpin; |
||
| 161 | |||
| 162 | /* Check the parameters */ |
||
| 163 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
||
| 164 | assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin)); |
||
| 165 | |||
| 166 | /* ------------------------- Configure the port pins ---------------- */ |
||
| 167 | /* Initialize pinpos on first pin set */ |
||
| 168 | |||
| 169 | pinmask = ((GPIO_InitStruct->Pin) << GPIO_PIN_MASK_POS) >> GPIO_PIN_NB; |
||
| 170 | pinpos = POSITION_VAL(pinmask); |
||
| 171 | |||
| 172 | /* Configure the port pins */ |
||
| 173 | while ((pinmask >> pinpos) != 0u) |
||
| 174 | { |
||
| 175 | /* skip if bit is not set */ |
||
| 176 | if ((pinmask & (1u << pinpos)) != 0u) |
||
| 177 | { |
||
| 178 | /* Get current io position */ |
||
| 179 | if (pinpos < GPIO_PIN_MASK_POS) |
||
| 180 | { |
||
| 181 | currentpin = (0x00000101uL << pinpos); |
||
| 182 | } |
||
| 183 | else |
||
| 184 | { |
||
| 185 | currentpin = ((0x00010001u << (pinpos - GPIO_PIN_MASK_POS)) | 0x04000000u); |
||
| 186 | } |
||
| 187 | |||
| 188 | /* Check Pin Mode and Pin Pull parameters */ |
||
| 189 | assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode)); |
||
| 190 | assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull)); |
||
| 191 | |||
| 192 | /* Pin Mode configuration */ |
||
| 193 | LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode); |
||
| 194 | |||
| 195 | /* Pull-up Pull-down resistor configuration*/ |
||
| 196 | LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull); |
||
| 197 | |||
| 198 | if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)) |
||
| 199 | { |
||
| 200 | /* Check speed and Output mode parameters */ |
||
| 201 | assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed)); |
||
| 202 | assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType)); |
||
| 203 | |||
| 204 | /* Speed mode configuration */ |
||
| 205 | LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed); |
||
| 206 | |||
| 207 | /* Output mode configuration*/ |
||
| 208 | LL_GPIO_SetPinOutputType(GPIOx, currentpin, GPIO_InitStruct->OutputType); |
||
| 209 | } |
||
| 210 | } |
||
| 211 | pinpos++; |
||
| 212 | } |
||
| 213 | return (SUCCESS); |
||
| 214 | } |
||
| 215 | |||
| 216 | /** |
||
| 217 | * @brief Set each @ref LL_GPIO_InitTypeDef field to default value. |
||
| 218 | * @param GPIO_InitStruct: pointer to a @ref LL_GPIO_InitTypeDef structure |
||
| 219 | * whose fields will be set to default values. |
||
| 220 | * @retval None |
||
| 221 | */ |
||
| 222 | |||
| 223 | void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct) |
||
| 224 | { |
||
| 225 | /* Reset GPIO init structure parameters values */ |
||
| 226 | GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL; |
||
| 227 | GPIO_InitStruct->Mode = LL_GPIO_MODE_FLOATING; |
||
| 228 | GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW; |
||
| 229 | GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_OPENDRAIN; |
||
| 230 | GPIO_InitStruct->Pull = LL_GPIO_PULL_DOWN; |
||
| 231 | } |
||
| 232 | |||
| 233 | /** |
||
| 234 | * @} |
||
| 235 | */ |
||
| 236 | |||
| 237 | /** |
||
| 238 | * @} |
||
| 239 | */ |
||
| 240 | |||
| 241 | /** |
||
| 242 | * @} |
||
| 243 | */ |
||
| 244 | |||
| 245 | #endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) */ |
||
| 246 | |||
| 247 | /** |
||
| 248 | * @} |
||
| 249 | */ |
||
| 250 | |||
| 251 | #endif /* USE_FULL_LL_DRIVER */ |
||
| 252 | |||
| 253 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |