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| Rev | Author | Line No. | Line |
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| 2 | mjames | 1 | /** |
| 2 | ****************************************************************************** |
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| 3 | * @file stm32f0xx_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 | * <h2><center>© Copyright (c) 2016 STMicroelectronics. |
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| 10 | * All rights reserved.</center></h2> |
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| 11 | * |
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| 12 | * This software component is licensed by ST under BSD 3-Clause license, |
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| 13 | * the "License"; You may not use this file except in compliance with the |
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| 14 | * License. You may obtain a copy of the License at: |
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| 15 | * opensource.org/licenses/BSD-3-Clause |
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| 16 | * |
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| 17 | ****************************************************************************** |
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| 18 | */ |
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| 19 | |||
| 20 | #if defined(USE_FULL_LL_DRIVER) |
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| 21 | |||
| 22 | /* Includes ------------------------------------------------------------------*/ |
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| 23 | #include "stm32f0xx_ll_gpio.h" |
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| 24 | #include "stm32f0xx_ll_bus.h" |
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| 25 | #ifdef USE_FULL_ASSERT |
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| 26 | #include "stm32_assert.h" |
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| 27 | #else |
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| 28 | #define assert_param(expr) ((void)0U) |
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| 29 | #endif |
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| 30 | |||
| 31 | /** @addtogroup STM32F0xx_LL_Driver |
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| 32 | * @{ |
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| 33 | */ |
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| 34 | |||
| 35 | #if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) |
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| 36 | |||
| 37 | /** @addtogroup GPIO_LL |
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| 38 | * @{ |
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| 39 | */ |
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| 40 | /** MISRA C:2012 deviation rule has been granted for following rules: |
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| 41 | * Rule-12.2 - Medium: RHS argument is in interval [0,INF] which is out of |
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| 42 | * range of the shift operator in following API : |
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| 43 | * LL_GPIO_Init |
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| 44 | * LL_GPIO_DeInit |
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| 45 | * LL_GPIO_SetPinMode |
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| 46 | * LL_GPIO_GetPinMode |
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| 47 | * LL_GPIO_SetPinSpeed |
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| 48 | * LL_GPIO_GetPinSpeed |
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| 49 | * LL_GPIO_SetPinPull |
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| 50 | * LL_GPIO_GetPinPull |
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| 51 | * LL_GPIO_GetAFPin_0_7 |
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| 52 | * LL_GPIO_SetAFPin_0_7 |
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| 53 | * LL_GPIO_SetAFPin_8_15 |
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| 54 | * LL_GPIO_GetAFPin_8_15 |
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| 55 | */ |
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| 56 | |||
| 57 | /* Private types -------------------------------------------------------------*/ |
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| 58 | /* Private variables ---------------------------------------------------------*/ |
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| 59 | /* Private constants ---------------------------------------------------------*/ |
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| 60 | /* Private macros ------------------------------------------------------------*/ |
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| 61 | /** @addtogroup GPIO_LL_Private_Macros |
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| 62 | * @{ |
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| 63 | */ |
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| 64 | #define IS_LL_GPIO_PIN(__VALUE__) (((0x00u) < (__VALUE__)) && ((__VALUE__) <= (LL_GPIO_PIN_ALL))) |
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| 65 | |||
| 66 | #define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_INPUT) ||\ |
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| 67 | ((__VALUE__) == LL_GPIO_MODE_OUTPUT) ||\ |
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| 68 | ((__VALUE__) == LL_GPIO_MODE_ALTERNATE) ||\ |
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| 69 | ((__VALUE__) == LL_GPIO_MODE_ANALOG)) |
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| 70 | |||
| 71 | #define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) ||\ |
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| 72 | ((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN)) |
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| 73 | |||
| 74 | #define IS_LL_GPIO_SPEED(__VALUE__) (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW) ||\ |
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| 75 | ((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM) ||\ |
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| 76 | ((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH)) |
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| 77 | |||
| 78 | #define IS_LL_GPIO_PULL(__VALUE__) (((__VALUE__) == LL_GPIO_PULL_NO) ||\ |
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| 79 | ((__VALUE__) == LL_GPIO_PULL_UP) ||\ |
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| 80 | ((__VALUE__) == LL_GPIO_PULL_DOWN)) |
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| 81 | |||
| 82 | #define IS_LL_GPIO_ALTERNATE(__VALUE__) (((__VALUE__) == LL_GPIO_AF_0 ) ||\ |
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| 83 | ((__VALUE__) == LL_GPIO_AF_1 ) ||\ |
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| 84 | ((__VALUE__) == LL_GPIO_AF_2 ) ||\ |
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| 85 | ((__VALUE__) == LL_GPIO_AF_3 ) ||\ |
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| 86 | ((__VALUE__) == LL_GPIO_AF_4 ) ||\ |
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| 87 | ((__VALUE__) == LL_GPIO_AF_5 ) ||\ |
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| 88 | ((__VALUE__) == LL_GPIO_AF_6 ) ||\ |
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| 89 | ((__VALUE__) == LL_GPIO_AF_7 )) |
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| 90 | /** |
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| 91 | * @} |
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| 92 | */ |
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| 93 | |||
| 94 | /* Private function prototypes -----------------------------------------------*/ |
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| 95 | |||
| 96 | /* Exported functions --------------------------------------------------------*/ |
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| 97 | /** @addtogroup GPIO_LL_Exported_Functions |
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| 98 | * @{ |
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| 99 | */ |
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| 100 | |||
| 101 | /** @addtogroup GPIO_LL_EF_Init |
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| 102 | * @{ |
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| 103 | */ |
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| 104 | |||
| 105 | /** |
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| 106 | * @brief De-initialize GPIO registers (Registers restored to their default values). |
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| 107 | * @param GPIOx GPIO Port |
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| 108 | * @retval An ErrorStatus enumeration value: |
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| 109 | * - SUCCESS: GPIO registers are de-initialized |
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| 110 | * - ERROR: Wrong GPIO Port |
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| 111 | */ |
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| 112 | ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx) |
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| 113 | { |
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| 114 | ErrorStatus status = SUCCESS; |
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| 115 | |||
| 116 | /* Check the parameters */ |
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| 117 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
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| 118 | |||
| 119 | /* Force and Release reset on clock of GPIOx Port */ |
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| 120 | if (GPIOx == GPIOA) |
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| 121 | { |
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| 122 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOA); |
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| 123 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOA); |
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| 124 | } |
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| 125 | else if (GPIOx == GPIOB) |
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| 126 | { |
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| 127 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOB); |
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| 128 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOB); |
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| 129 | } |
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| 130 | else if (GPIOx == GPIOC) |
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| 131 | { |
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| 132 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOC); |
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| 133 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOC); |
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| 134 | } |
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| 135 | #if defined(GPIOD) |
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| 136 | else if (GPIOx == GPIOD) |
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| 137 | { |
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| 138 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOD); |
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| 139 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOD); |
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| 140 | } |
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| 141 | #endif /* GPIOD */ |
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| 142 | #if defined(GPIOE) |
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| 143 | else if (GPIOx == GPIOE) |
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| 144 | { |
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| 145 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOE); |
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| 146 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOE); |
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| 147 | } |
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| 148 | #endif /* GPIOE */ |
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| 149 | #if defined(GPIOF) |
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| 150 | else if (GPIOx == GPIOF) |
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| 151 | { |
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| 152 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOF); |
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| 153 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOF); |
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| 154 | } |
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| 155 | #endif /* GPIOF */ |
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| 156 | else |
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| 157 | { |
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| 158 | status = ERROR; |
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| 159 | } |
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| 160 | |||
| 161 | return (status); |
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| 162 | } |
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| 163 | |||
| 164 | /** |
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| 165 | * @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct. |
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| 166 | * @param GPIOx GPIO Port |
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| 167 | * @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure |
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| 168 | * that contains the configuration information for the specified GPIO peripheral. |
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| 169 | * @retval An ErrorStatus enumeration value: |
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| 170 | * - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content |
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| 171 | * - ERROR: Not applicable |
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| 172 | */ |
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| 173 | ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct) |
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| 174 | { |
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| 175 | uint32_t pinpos; |
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| 176 | uint32_t currentpin; |
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| 177 | |||
| 178 | /* Check the parameters */ |
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| 179 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
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| 180 | assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin)); |
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| 181 | assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode)); |
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| 182 | assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull)); |
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| 183 | |||
| 184 | /* ------------------------- Configure the port pins ---------------- */ |
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| 185 | /* Initialize pinpos on first pin set */ |
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| 186 | pinpos = 0; |
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| 187 | |||
| 188 | /* Configure the port pins */ |
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| 189 | while (((GPIO_InitStruct->Pin) >> pinpos) != 0x00u) |
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| 190 | { |
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| 191 | /* Get current io position */ |
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| 192 | currentpin = (GPIO_InitStruct->Pin) & (0x00000001uL << pinpos); |
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| 193 | |||
| 194 | if (currentpin != 0x00u) |
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| 195 | { |
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| 196 | if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)) |
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| 197 | { |
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| 198 | /* Check Speed mode parameters */ |
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| 199 | assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed)); |
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| 200 | |||
| 201 | /* Speed mode configuration */ |
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| 202 | LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed); |
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| 6 | mjames | 203 | |
| 204 | /* Check Output mode parameters */ |
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| 205 | assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType)); |
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| 206 | |||
| 207 | /* Output mode configuration*/ |
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| 208 | LL_GPIO_SetPinOutputType(GPIOx, GPIO_InitStruct->Pin, GPIO_InitStruct->OutputType); |
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| 2 | mjames | 209 | } |
| 210 | |||
| 211 | /* Pull-up Pull down resistor configuration*/ |
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| 212 | LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull); |
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| 213 | |||
| 214 | if (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE) |
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| 215 | { |
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| 216 | /* Check Alternate parameter */ |
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| 217 | assert_param(IS_LL_GPIO_ALTERNATE(GPIO_InitStruct->Alternate)); |
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| 218 | |||
| 219 | /* Speed mode configuration */ |
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| 220 | if (currentpin < LL_GPIO_PIN_8) |
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| 221 | { |
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| 222 | LL_GPIO_SetAFPin_0_7(GPIOx, currentpin, GPIO_InitStruct->Alternate); |
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| 223 | } |
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| 224 | else |
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| 225 | { |
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| 226 | LL_GPIO_SetAFPin_8_15(GPIOx, currentpin, GPIO_InitStruct->Alternate); |
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| 227 | } |
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| 228 | } |
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| 6 | mjames | 229 | |
| 230 | /* Pin Mode configuration */ |
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| 231 | LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode); |
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| 2 | mjames | 232 | } |
| 233 | pinpos++; |
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| 234 | } |
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| 235 | |||
| 236 | return (SUCCESS); |
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| 237 | } |
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| 238 | |||
| 239 | /** |
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| 240 | * @brief Set each @ref LL_GPIO_InitTypeDef field to default value. |
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| 241 | * @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure |
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| 242 | * whose fields will be set to default values. |
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| 243 | * @retval None |
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| 244 | */ |
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| 245 | |||
| 246 | void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct) |
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| 247 | { |
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| 248 | /* Reset GPIO init structure parameters values */ |
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| 249 | GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL; |
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| 250 | GPIO_InitStruct->Mode = LL_GPIO_MODE_ANALOG; |
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| 251 | GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW; |
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| 252 | GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_PUSHPULL; |
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| 253 | GPIO_InitStruct->Pull = LL_GPIO_PULL_NO; |
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| 254 | GPIO_InitStruct->Alternate = LL_GPIO_AF_0; |
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| 255 | } |
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| 256 | |||
| 257 | /** |
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| 258 | * @} |
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| 259 | */ |
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| 260 | |||
| 261 | /** |
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| 262 | * @} |
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| 263 | */ |
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| 264 | |||
| 265 | /** |
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| 266 | * @} |
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| 267 | */ |
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| 268 | |||
| 269 | #endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) */ |
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| 270 | |||
| 271 | /** |
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| 272 | * @} |
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| 273 | */ |
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| 274 | |||
| 275 | #endif /* USE_FULL_LL_DRIVER */ |
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| 276 | |||
| 277 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |