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annotate Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_gpio.c @ 176:1719b9d1094b max-depth

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cleanup: do not assign to same Interestingly, this weird line sometimes results in a compile error. Well it seems useless anyhow. Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
author Jan Mulder <jlmulder@xs4all.nl>
date Mon, 11 Mar 2019 20:20:17 +0100
parents c78bcbd5deda
children
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1 /**
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2 ******************************************************************************
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3 * @file stm32f4xx_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>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
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10 *
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11 * Redistribution and use in source and binary forms, with or without modification,
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12 * are permitted provided that the following conditions are met:
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13 * 1. Redistributions of source code must retain the above copyright notice,
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14 * this list of conditions and the following disclaimer.
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15 * 2. Redistributions in binary form must reproduce the above copyright notice,
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16 * this list of conditions and the following disclaimer in the documentation
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17 * and/or other materials provided with the distribution.
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18 * 3. Neither the name of STMicroelectronics nor the names of its contributors
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19 * may be used to endorse or promote products derived from this software
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20 * without specific prior written permission.
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21 *
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22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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25 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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32 *
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33 ******************************************************************************
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34 */
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35 #if defined(USE_FULL_LL_DRIVER)
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36
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37 /* Includes ------------------------------------------------------------------*/
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38 #include "stm32f4xx_ll_gpio.h"
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39 #include "stm32f4xx_ll_bus.h"
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40 #ifdef USE_FULL_ASSERT
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41 #include "stm32_assert.h"
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42 #else
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43 #define assert_param(expr) ((void)0U)
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44 #endif
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45
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46 /** @addtogroup STM32F4xx_LL_Driver
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47 * @{
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48 */
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49
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50 #if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) || defined (GPIOH) || defined (GPIOI) || defined (GPIOJ) || defined (GPIOK)
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51
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52 /** @addtogroup GPIO_LL
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53 * @{
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54 */
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55
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56 /* Private types -------------------------------------------------------------*/
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57 /* Private variables ---------------------------------------------------------*/
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58 /* Private constants ---------------------------------------------------------*/
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59 /* Private macros ------------------------------------------------------------*/
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60 /** @addtogroup GPIO_LL_Private_Macros
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61 * @{
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62 */
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63 #define IS_LL_GPIO_PIN(__VALUE__) (((0x00000000U) < (__VALUE__)) && ((__VALUE__) <= (LL_GPIO_PIN_ALL)))
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64
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65 #define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_INPUT) ||\
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66 ((__VALUE__) == LL_GPIO_MODE_OUTPUT) ||\
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67 ((__VALUE__) == LL_GPIO_MODE_ALTERNATE) ||\
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68 ((__VALUE__) == LL_GPIO_MODE_ANALOG))
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69
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70 #define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) ||\
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71 ((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN))
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72
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73 #define IS_LL_GPIO_SPEED(__VALUE__) (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW) ||\
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74 ((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM) ||\
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75 ((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH) ||\
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76 ((__VALUE__) == LL_GPIO_SPEED_FREQ_VERY_HIGH))
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77
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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
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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 ((__VALUE__) == LL_GPIO_AF_8 ) ||\
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91 ((__VALUE__) == LL_GPIO_AF_9 ) ||\
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92 ((__VALUE__) == LL_GPIO_AF_10 ) ||\
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93 ((__VALUE__) == LL_GPIO_AF_11 ) ||\
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94 ((__VALUE__) == LL_GPIO_AF_12 ) ||\
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95 ((__VALUE__) == LL_GPIO_AF_13 ) ||\
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96 ((__VALUE__) == LL_GPIO_AF_14 ) ||\
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97 ((__VALUE__) == LL_GPIO_AF_15 ))
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98 /**
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99 * @}
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100 */
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101
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102 /* Private function prototypes -----------------------------------------------*/
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103
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104 /* Exported functions --------------------------------------------------------*/
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105 /** @addtogroup GPIO_LL_Exported_Functions
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106 * @{
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107 */
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108
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109 /** @addtogroup GPIO_LL_EF_Init
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110 * @{
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111 */
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112
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113 /**
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114 * @brief De-initialize GPIO registers (Registers restored to their default values).
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115 * @param GPIOx GPIO Port
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116 * @retval An ErrorStatus enumeration value:
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117 * - SUCCESS: GPIO registers are de-initialized
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118 * - ERROR: Wrong GPIO Port
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119 */
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120 ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx)
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121 {
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122 ErrorStatus status = SUCCESS;
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123
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124 /* Check the parameters */
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125 assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
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126
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127 /* Force and Release reset on clock of GPIOx Port */
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128 if (GPIOx == GPIOA)
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129 {
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130 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOA);
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131 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOA);
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132 }
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133 else if (GPIOx == GPIOB)
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134 {
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135 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOB);
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136 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOB);
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137 }
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138 else if (GPIOx == GPIOC)
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139 {
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140 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOC);
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141 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOC);
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142 }
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143 #if defined(GPIOD)
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144 else if (GPIOx == GPIOD)
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145 {
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146 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOD);
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147 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOD);
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148 }
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149 #endif /* GPIOD */
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150 #if defined(GPIOE)
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151 else if (GPIOx == GPIOE)
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152 {
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153 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOE);
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154 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOE);
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155 }
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156 #endif /* GPIOE */
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157 #if defined(GPIOF)
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158 else if (GPIOx == GPIOF)
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159 {
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160 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOF);
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161 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOF);
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162 }
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163 #endif /* GPIOF */
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164 #if defined(GPIOG)
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165 else if (GPIOx == GPIOG)
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166 {
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167 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOG);
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168 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOG);
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169 }
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170 #endif /* GPIOG */
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171 #if defined(GPIOH)
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172 else if (GPIOx == GPIOH)
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173 {
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174 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOH);
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175 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOH);
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176 }
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177 #endif /* GPIOH */
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178 #if defined(GPIOI)
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179 else if (GPIOx == GPIOI)
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180 {
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181 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOI);
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182 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOI);
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183 }
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184 #endif /* GPIOI */
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185 #if defined(GPIOJ)
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186 else if (GPIOx == GPIOJ)
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187 {
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188 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOJ);
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189 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOJ);
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190 }
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191 #endif /* GPIOJ */
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192 #if defined(GPIOK)
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193 else if (GPIOx == GPIOK)
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194 {
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195 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOK);
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196 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOK);
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197 }
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198 #endif /* GPIOK */
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199 else
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200 {
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201 status = ERROR;
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202 }
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203
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204 return (status);
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205 }
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206
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207 /**
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208 * @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct.
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209 * @param GPIOx GPIO Port
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210 * @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure
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211 * that contains the configuration information for the specified GPIO peripheral.
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212 * @retval An ErrorStatus enumeration value:
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213 * - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content
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214 * - ERROR: Not applicable
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215 */
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216 ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct)
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217 {
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218 uint32_t pinpos = 0x00000000U;
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219 uint32_t currentpin = 0x00000000U;
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220
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221 /* Check the parameters */
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222 assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
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223 assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin));
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224 assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode));
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225 assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull));
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226
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227 /* ------------------------- Configure the port pins ---------------- */
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228 /* Initialize pinpos on first pin set */
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229 pinpos = POSITION_VAL(GPIO_InitStruct->Pin);
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230
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231 /* Configure the port pins */
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232 while (((GPIO_InitStruct->Pin) >> pinpos) != 0x00000000U)
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233 {
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234 /* Get current io position */
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235 currentpin = (GPIO_InitStruct->Pin) & (0x00000001U << pinpos);
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236
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237 if (currentpin)
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238 {
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239 /* Pin Mode configuration */
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240 LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode);
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241
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242 if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE))
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243 {
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244 /* Check Speed mode parameters */
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245 assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed));
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246
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247 /* Speed mode configuration */
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248 LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed);
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249 }
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250
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251 /* Pull-up Pull down resistor configuration*/
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252 LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull);
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253
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254 if (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)
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255 {
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256 /* Check Alternate parameter */
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257 assert_param(IS_LL_GPIO_ALTERNATE(GPIO_InitStruct->Alternate));
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258
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259 /* Speed mode configuration */
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260 if (POSITION_VAL(currentpin) < 0x00000008U)
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261 {
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262 LL_GPIO_SetAFPin_0_7(GPIOx, currentpin, GPIO_InitStruct->Alternate);
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263 }
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264 else
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265 {
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266 LL_GPIO_SetAFPin_8_15(GPIOx, currentpin, GPIO_InitStruct->Alternate);
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267 }
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268 }
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269 }
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270 pinpos++;
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271 }
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272
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273 if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE))
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274 {
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275 /* Check Output mode parameters */
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276 assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType));
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277
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278 /* Output mode configuration*/
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279 LL_GPIO_SetPinOutputType(GPIOx, GPIO_InitStruct->Pin, GPIO_InitStruct->OutputType);
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280
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281 }
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282 return (SUCCESS);
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283 }
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284
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285 /**
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286 * @brief Set each @ref LL_GPIO_InitTypeDef field to default value.
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287 * @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure
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288 * whose fields will be set to default values.
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289 * @retval None
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290 */
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291
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292 void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct)
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293 {
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294 /* Reset GPIO init structure parameters values */
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295 GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL;
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296 GPIO_InitStruct->Mode = LL_GPIO_MODE_ANALOG;
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297 GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW;
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298 GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_PUSHPULL;
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299 GPIO_InitStruct->Pull = LL_GPIO_PULL_NO;
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300 GPIO_InitStruct->Alternate = LL_GPIO_AF_0;
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301 }
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302
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303 /**
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304 * @}
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305 */
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306
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307 /**
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308 * @}
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309 */
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310
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311 /**
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312 * @}
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313 */
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314
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315 #endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) || defined (GPIOH) || defined (GPIOI) || defined (GPIOJ) || defined (GPIOK) */
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316
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317 /**
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318 * @}
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319 */
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320
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321 #endif /* USE_FULL_LL_DRIVER */
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322
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323 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/