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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | mjames | 1 | /** |
| 2 | ****************************************************************************** |
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| 3 | * @file stm32f1xx_ll_gpio.c |
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| 4 | * @author MCD Application Team |
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| 5 | * @brief GPIO LL module driver. |
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| 6 | ****************************************************************************** |
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| 7 | * @attention |
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| 8 | * |
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| 9 | * Copyright (c) 2016 STMicroelectronics. |
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| 10 | * All rights reserved. |
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| 11 | * |
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| 12 | * This software is licensed under terms that can be found in the LICENSE file |
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| 13 | * in the root directory of this software component. |
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| 14 | * If no LICENSE file comes with this software, it is provided AS-IS. |
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| 15 | * |
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| 16 | ****************************************************************************** |
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| 17 | */ |
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| 18 | |||
| 19 | #if defined(USE_FULL_LL_DRIVER) |
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| 20 | |||
| 21 | /* Includes ------------------------------------------------------------------*/ |
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| 22 | #include "stm32f1xx_ll_gpio.h" |
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| 23 | #include "stm32f1xx_ll_bus.h" |
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| 24 | #ifdef USE_FULL_ASSERT |
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| 25 | #include "stm32_assert.h" |
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| 26 | #else |
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| 27 | #define assert_param(expr) ((void)0U) |
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| 28 | #endif |
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| 29 | |||
| 30 | /** @addtogroup STM32F1xx_LL_Driver |
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| 31 | * @{ |
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| 32 | */ |
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| 33 | |||
| 34 | #if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) |
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| 35 | |||
| 36 | /** @addtogroup GPIO_LL |
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| 37 | * @{ |
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| 38 | */ |
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| 39 | |||
| 40 | /* Private types -------------------------------------------------------------*/ |
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| 41 | /* Private variables ---------------------------------------------------------*/ |
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| 42 | /* Private constants ---------------------------------------------------------*/ |
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| 43 | /* Private macros ------------------------------------------------------------*/ |
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| 44 | /** @addtogroup GPIO_LL_Private_Macros |
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| 45 | * @{ |
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| 46 | */ |
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| 47 | |||
| 48 | #define IS_LL_GPIO_PIN(__VALUE__) ((((__VALUE__) & LL_GPIO_PIN_ALL)!= 0u) &&\ |
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| 49 | (((__VALUE__) & (~LL_GPIO_PIN_ALL))== 0u)) |
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| 50 | |||
| 51 | #define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_ANALOG) ||\ |
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| 52 | ((__VALUE__) == LL_GPIO_MODE_FLOATING) ||\ |
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| 53 | ((__VALUE__) == LL_GPIO_MODE_INPUT) ||\ |
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| 54 | ((__VALUE__) == LL_GPIO_MODE_OUTPUT) ||\ |
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| 55 | ((__VALUE__) == LL_GPIO_MODE_ALTERNATE)) |
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| 56 | |||
| 57 | #define IS_LL_GPIO_SPEED(__VALUE__) (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW) ||\ |
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| 58 | ((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM) ||\ |
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| 59 | ((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH)) |
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| 60 | |||
| 61 | #define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) ||\ |
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| 62 | ((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN)) |
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| 63 | |||
| 64 | #define IS_LL_GPIO_PULL(__VALUE__) (((__VALUE__) == LL_GPIO_PULL_DOWN) ||\ |
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| 65 | ((__VALUE__) == LL_GPIO_PULL_UP)) |
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| 66 | |||
| 67 | /** |
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| 68 | * @} |
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| 69 | */ |
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| 70 | |||
| 71 | /* Private function prototypes -----------------------------------------------*/ |
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| 72 | |||
| 73 | /* Exported functions --------------------------------------------------------*/ |
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| 74 | /** @addtogroup GPIO_LL_Exported_Functions |
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| 75 | * @{ |
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| 76 | */ |
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| 77 | |||
| 78 | /** @addtogroup GPIO_LL_EF_Init |
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| 79 | * @{ |
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| 80 | */ |
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| 81 | |||
| 82 | /** |
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| 83 | * @brief De-initialize GPIO registers (Registers restored to their default values). |
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| 84 | * @param GPIOx GPIO Port |
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| 85 | * @retval An ErrorStatus enumeration value: |
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| 86 | * - SUCCESS: GPIO registers are de-initialized |
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| 87 | * - ERROR: Wrong GPIO Port |
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| 88 | */ |
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| 89 | ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx) |
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| 90 | { |
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| 91 | ErrorStatus status = SUCCESS; |
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| 92 | |||
| 93 | /* Check the parameters */ |
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| 94 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
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| 95 | |||
| 96 | /* Force and Release reset on clock of GPIOx Port */ |
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| 97 | if (GPIOx == GPIOA) |
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| 98 | { |
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| 99 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOA); |
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| 100 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOA); |
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| 101 | } |
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| 102 | else if (GPIOx == GPIOB) |
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| 103 | { |
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| 104 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOB); |
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| 105 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOB); |
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| 106 | } |
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| 107 | else if (GPIOx == GPIOC) |
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| 108 | { |
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| 109 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOC); |
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| 110 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOC); |
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| 111 | } |
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| 112 | else if (GPIOx == GPIOD) |
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| 113 | { |
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| 114 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOD); |
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| 115 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOD); |
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| 116 | } |
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| 117 | #if defined(GPIOE) |
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| 118 | else if (GPIOx == GPIOE) |
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| 119 | { |
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| 120 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOE); |
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| 121 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOE); |
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| 122 | } |
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| 123 | #endif |
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| 124 | #if defined(GPIOF) |
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| 125 | else if (GPIOx == GPIOF) |
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| 126 | { |
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| 127 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOF); |
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| 128 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOF); |
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| 129 | } |
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| 130 | #endif |
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| 131 | #if defined(GPIOG) |
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| 132 | else if (GPIOx == GPIOG) |
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| 133 | { |
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| 134 | LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOG); |
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| 135 | LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOG); |
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| 136 | } |
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| 137 | #endif |
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| 138 | else |
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| 139 | { |
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| 140 | status = ERROR; |
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| 141 | } |
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| 142 | |||
| 143 | return (status); |
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| 144 | } |
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| 145 | |||
| 146 | /** |
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| 147 | * @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct. |
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| 148 | * @param GPIOx GPIO Port |
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| 149 | * @param GPIO_InitStruct: pointer to a @ref LL_GPIO_InitTypeDef structure |
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| 150 | * that contains the configuration information for the specified GPIO peripheral. |
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| 151 | * @retval An ErrorStatus enumeration value: |
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| 152 | * - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content |
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| 153 | * - ERROR: Not applicable |
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| 154 | */ |
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| 155 | ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct) |
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| 156 | { |
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| 157 | uint32_t pinmask; |
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| 158 | uint32_t pinpos; |
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| 159 | uint32_t currentpin; |
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| 160 | |||
| 161 | /* Check the parameters */ |
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| 162 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
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| 163 | assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin)); |
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| 164 | |||
| 165 | /* ------------------------- Configure the port pins ---------------- */ |
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| 166 | /* Initialize pinpos on first pin set */ |
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| 167 | |||
| 168 | pinmask = ((GPIO_InitStruct->Pin) << GPIO_PIN_MASK_POS) >> GPIO_PIN_NB; |
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| 169 | pinpos = POSITION_VAL(pinmask); |
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| 170 | |||
| 171 | /* Configure the port pins */ |
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| 172 | while ((pinmask >> pinpos) != 0u) |
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| 173 | { |
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| 174 | /* skip if bit is not set */ |
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| 175 | if ((pinmask & (1u << pinpos)) != 0u) |
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| 176 | { |
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| 177 | /* Get current io position */ |
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| 178 | if (pinpos < GPIO_PIN_MASK_POS) |
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| 179 | { |
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| 180 | currentpin = (0x00000101uL << pinpos); |
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| 181 | } |
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| 182 | else |
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| 183 | { |
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| 184 | currentpin = ((0x00010001u << (pinpos - GPIO_PIN_MASK_POS)) | 0x04000000u); |
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| 185 | } |
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| 186 | |||
| 187 | if (GPIO_InitStruct->Mode == LL_GPIO_MODE_INPUT) |
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| 188 | { |
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| 189 | /* Check The Pull parameter */ |
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| 190 | assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull)); |
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| 191 | |||
| 192 | /* Pull-up Pull-down resistor configuration*/ |
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| 193 | LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull); |
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| 194 | } |
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| 195 | |||
| 196 | /* Check Pin Mode parameters */ |
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| 197 | assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode)); |
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| 198 | |||
| 199 | /* Pin Mode configuration */ |
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| 200 | LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode); |
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| 201 | |||
| 202 | if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)) |
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| 203 | { |
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| 204 | /* Check speed and Output mode parameters */ |
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| 205 | assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed)); |
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| 206 | assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType)); |
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| 207 | |||
| 208 | /* Speed mode configuration */ |
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| 209 | LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed); |
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| 210 | |||
| 211 | /* Output mode configuration*/ |
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| 212 | LL_GPIO_SetPinOutputType(GPIOx, currentpin, GPIO_InitStruct->OutputType); |
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| 213 | } |
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| 214 | } |
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| 215 | pinpos++; |
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| 216 | } |
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| 217 | return (SUCCESS); |
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| 218 | } |
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| 219 | |||
| 220 | /** |
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| 221 | * @brief Set each @ref LL_GPIO_InitTypeDef field to default value. |
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| 222 | * @param GPIO_InitStruct: pointer to a @ref LL_GPIO_InitTypeDef structure |
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| 223 | * whose fields will be set to default values. |
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| 224 | * @retval None |
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| 225 | */ |
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| 226 | |||
| 227 | void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct) |
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| 228 | { |
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| 229 | /* Reset GPIO init structure parameters values */ |
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| 230 | GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL; |
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| 231 | GPIO_InitStruct->Mode = LL_GPIO_MODE_FLOATING; |
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| 232 | GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW; |
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| 233 | GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_OPENDRAIN; |
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| 234 | GPIO_InitStruct->Pull = LL_GPIO_PULL_DOWN; |
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| 235 | } |
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| 236 | |||
| 237 | /** |
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| 238 | * @} |
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| 239 | */ |
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| 240 | |||
| 241 | /** |
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| 242 | * @} |
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| 243 | */ |
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| 244 | |||
| 245 | /** |
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| 246 | * @} |
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| 247 | */ |
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| 248 | |||
| 249 | #endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) */ |
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| 250 | |||
| 251 | /** |
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| 252 | * @} |
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| 253 | */ |
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| 254 | |||
| 255 | #endif /* USE_FULL_LL_DRIVER */ |
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| 256 |