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| Rev | Author | Line No. | Line |
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| 56 | mjames | 1 | /** |
| 2 | ****************************************************************************** |
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| 3 | * @file stm32l1xx_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) 2017 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 | #if defined(USE_FULL_LL_DRIVER) |
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| 20 | |||
| 21 | /* Includes ------------------------------------------------------------------*/ |
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| 22 | #include "stm32l1xx_ll_gpio.h" |
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| 23 | #include "stm32l1xx_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 STM32L1xx_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) || defined (GPIOH) |
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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 | #define IS_LL_GPIO_PIN(__VALUE__) (((0x00000000U) < (__VALUE__)) && ((__VALUE__) <= (LL_GPIO_PIN_ALL))) |
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| 48 | |||
| 49 | #define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_INPUT) ||\ |
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| 50 | ((__VALUE__) == LL_GPIO_MODE_OUTPUT) ||\ |
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| 51 | ((__VALUE__) == LL_GPIO_MODE_ALTERNATE) ||\ |
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| 52 | ((__VALUE__) == LL_GPIO_MODE_ANALOG)) |
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| 53 | |||
| 54 | #define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) ||\ |
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| 55 | ((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN)) |
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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 | ((__VALUE__) == LL_GPIO_SPEED_FREQ_VERY_HIGH)) |
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| 61 | |||
| 62 | #define IS_LL_GPIO_PULL(__VALUE__) (((__VALUE__) == LL_GPIO_PULL_NO) ||\ |
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| 63 | ((__VALUE__) == LL_GPIO_PULL_UP) ||\ |
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| 64 | ((__VALUE__) == LL_GPIO_PULL_DOWN)) |
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| 65 | |||
| 66 | #define IS_LL_GPIO_ALTERNATE(__VALUE__) (((__VALUE__) == LL_GPIO_AF_0 ) ||\ |
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| 67 | ((__VALUE__) == LL_GPIO_AF_1 ) ||\ |
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| 68 | ((__VALUE__) == LL_GPIO_AF_2 ) ||\ |
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| 69 | ((__VALUE__) == LL_GPIO_AF_3 ) ||\ |
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| 70 | ((__VALUE__) == LL_GPIO_AF_4 ) ||\ |
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| 71 | ((__VALUE__) == LL_GPIO_AF_5 ) ||\ |
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| 72 | ((__VALUE__) == LL_GPIO_AF_6 ) ||\ |
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| 73 | ((__VALUE__) == LL_GPIO_AF_7 ) ||\ |
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| 74 | ((__VALUE__) == LL_GPIO_AF_8 ) ||\ |
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| 75 | ((__VALUE__) == LL_GPIO_AF_9 ) ||\ |
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| 76 | ((__VALUE__) == LL_GPIO_AF_10 ) ||\ |
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| 77 | ((__VALUE__) == LL_GPIO_AF_11 ) ||\ |
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| 78 | ((__VALUE__) == LL_GPIO_AF_12 ) ||\ |
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| 79 | ((__VALUE__) == LL_GPIO_AF_13 ) ||\ |
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| 80 | ((__VALUE__) == LL_GPIO_AF_14 ) ||\ |
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| 81 | ((__VALUE__) == LL_GPIO_AF_15 )) |
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| 82 | /** |
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| 83 | * @} |
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| 84 | */ |
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| 85 | |||
| 86 | /* Private function prototypes -----------------------------------------------*/ |
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| 87 | |||
| 88 | /* Exported functions --------------------------------------------------------*/ |
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| 89 | /** @addtogroup GPIO_LL_Exported_Functions |
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| 90 | * @{ |
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| 91 | */ |
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| 92 | |||
| 93 | /** @addtogroup GPIO_LL_EF_Init |
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| 94 | * @{ |
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| 95 | */ |
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| 96 | |||
| 97 | /** |
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| 98 | * @brief De-initialize GPIO registers (Registers restored to their default values). |
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| 99 | * @param GPIOx GPIO Port |
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| 100 | * @retval An ErrorStatus enumeration value: |
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| 101 | * - SUCCESS: GPIO registers are de-initialized |
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| 102 | * - ERROR: Wrong GPIO Port |
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| 103 | */ |
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| 104 | ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx) |
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| 105 | { |
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| 106 | ErrorStatus status = SUCCESS; |
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| 107 | |||
| 108 | /* Check the parameters */ |
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| 109 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
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| 110 | |||
| 111 | /* Force and Release reset on clock of GPIOx Port */ |
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| 112 | if (GPIOx == GPIOA) |
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| 113 | { |
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| 114 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOA); |
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| 115 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOA); |
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| 116 | } |
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| 117 | else if (GPIOx == GPIOB) |
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| 118 | { |
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| 119 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOB); |
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| 120 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOB); |
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| 121 | } |
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| 122 | else if (GPIOx == GPIOC) |
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| 123 | { |
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| 124 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOC); |
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| 125 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOC); |
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| 126 | } |
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| 127 | #if defined(GPIOD) |
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| 128 | else if (GPIOx == GPIOD) |
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| 129 | { |
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| 130 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOD); |
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| 131 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOD); |
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| 132 | } |
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| 133 | #endif /* GPIOD */ |
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| 134 | #if defined(GPIOE) |
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| 135 | else if (GPIOx == GPIOE) |
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| 136 | { |
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| 137 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOE); |
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| 138 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOE); |
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| 139 | } |
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| 140 | #endif /* GPIOE */ |
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| 141 | #if defined(GPIOF) |
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| 142 | else if (GPIOx == GPIOF) |
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| 143 | { |
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| 144 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOF); |
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| 145 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOF); |
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| 146 | } |
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| 147 | #endif /* GPIOF */ |
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| 148 | #if defined(GPIOG) |
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| 149 | else if (GPIOx == GPIOG) |
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| 150 | { |
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| 151 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOG); |
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| 152 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOG); |
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| 153 | } |
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| 154 | #endif /* GPIOG */ |
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| 155 | #if defined(GPIOH) |
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| 156 | else if (GPIOx == GPIOH) |
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| 157 | { |
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| 158 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOH); |
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| 159 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOH); |
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| 160 | } |
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| 161 | #endif /* GPIOH */ |
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| 162 | else |
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| 163 | { |
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| 164 | status = ERROR; |
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| 165 | } |
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| 166 | |||
| 167 | return (status); |
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| 168 | } |
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| 169 | |||
| 170 | /** |
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| 171 | * @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct. |
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| 172 | * @param GPIOx GPIO Port |
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| 173 | * @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure |
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| 174 | * that contains the configuration information for the specified GPIO peripheral. |
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| 175 | * @retval An ErrorStatus enumeration value: |
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| 176 | * - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content |
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| 177 | * - ERROR: Not applicable |
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| 178 | */ |
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| 179 | ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct) |
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| 180 | { |
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| 181 | uint32_t pinpos = 0x00000000U; |
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| 182 | uint32_t currentpin = 0x00000000U; |
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| 183 | |||
| 184 | /* Check the parameters */ |
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| 185 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
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| 186 | assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin)); |
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| 187 | assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode)); |
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| 188 | assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull)); |
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| 189 | |||
| 190 | /* ------------------------- Configure the port pins ---------------- */ |
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| 191 | /* Initialize pinpos on first pin set */ |
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| 192 | pinpos = POSITION_VAL(GPIO_InitStruct->Pin); |
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| 193 | |||
| 194 | /* Configure the port pins */ |
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| 195 | while (((GPIO_InitStruct->Pin) >> pinpos) != 0x00000000U) |
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| 196 | { |
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| 197 | /* Get current io position */ |
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| 198 | currentpin = (GPIO_InitStruct->Pin) & (0x00000001U << pinpos); |
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| 199 | |||
| 200 | if (currentpin) |
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| 201 | { |
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| 202 | |||
| 203 | if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)) |
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| 204 | { |
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| 205 | /* Check Speed mode parameters */ |
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| 206 | assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed)); |
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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 | /* Check Output mode parameters */ |
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| 212 | assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType)); |
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| 213 | |||
| 214 | /* Output mode configuration*/ |
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| 215 | LL_GPIO_SetPinOutputType(GPIOx, currentpin, GPIO_InitStruct->OutputType); |
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| 216 | } |
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| 217 | |||
| 218 | /* Pull-up Pull down resistor configuration*/ |
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| 219 | LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull); |
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| 220 | |||
| 221 | if (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE) |
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| 222 | { |
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| 223 | /* Check Alternate parameter */ |
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| 224 | assert_param(IS_LL_GPIO_ALTERNATE(GPIO_InitStruct->Alternate)); |
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| 225 | |||
| 226 | /* Speed mode configuration */ |
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| 227 | if (POSITION_VAL(currentpin) < 0x00000008U) |
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| 228 | { |
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| 229 | LL_GPIO_SetAFPin_0_7(GPIOx, currentpin, GPIO_InitStruct->Alternate); |
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| 230 | } |
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| 231 | else |
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| 232 | { |
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| 233 | LL_GPIO_SetAFPin_8_15(GPIOx, currentpin, GPIO_InitStruct->Alternate); |
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| 234 | } |
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| 235 | } |
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| 236 | |||
| 237 | /* Pin Mode configuration */ |
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| 238 | LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode); |
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| 239 | } |
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| 240 | pinpos++; |
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| 241 | } |
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| 242 | |||
| 243 | return (SUCCESS); |
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| 244 | } |
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| 245 | |||
| 246 | /** |
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| 247 | * @brief Set each @ref LL_GPIO_InitTypeDef field to default value. |
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| 248 | * @param GPIO_InitStruct: pointer to a @ref LL_GPIO_InitTypeDef structure |
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| 249 | * whose fields will be set to default values. |
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| 250 | * @retval None |
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| 251 | */ |
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| 252 | |||
| 253 | void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct) |
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| 254 | { |
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| 255 | /* Reset GPIO init structure parameters values */ |
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| 256 | GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL; |
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| 257 | GPIO_InitStruct->Mode = LL_GPIO_MODE_ANALOG; |
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| 258 | GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW; |
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| 259 | GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_PUSHPULL; |
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| 260 | GPIO_InitStruct->Pull = LL_GPIO_PULL_NO; |
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| 261 | GPIO_InitStruct->Alternate = LL_GPIO_AF_0; |
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| 262 | } |
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| 263 | |||
| 264 | /** |
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| 265 | * @} |
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| 266 | */ |
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| 267 | |||
| 268 | /** |
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| 269 | * @} |
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| 270 | */ |
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| 271 | |||
| 272 | /** |
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| 273 | * @} |
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| 274 | */ |
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| 275 | |||
| 276 | #endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) || defined (GPIOH) */ |
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| 277 | |||
| 278 | /** |
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| 279 | * @} |
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| 280 | */ |
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| 281 | |||
| 282 | #endif /* USE_FULL_LL_DRIVER */ |
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| 283 | |||
| 284 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |