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annotate Common/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_ll_crc.h @ 537:0ad0b26ec56b

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author Ideenmodellierer
date Wed, 07 Oct 2020 18:07:10 +0200
parents c78bcbd5deda
children
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1 /**
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2 ******************************************************************************
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3 * @file stm32f4xx_ll_crc.h
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4 * @author MCD Application Team
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5 * @brief Header file of CRC LL module.
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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
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36 /* Define to prevent recursive inclusion -------------------------------------*/
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37 #ifndef __STM32F4xx_LL_CRC_H
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38 #define __STM32F4xx_LL_CRC_H
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39
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40 #ifdef __cplusplus
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41 extern "C" {
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42 #endif
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43
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44 /* Includes ------------------------------------------------------------------*/
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45 #include "stm32f4xx.h"
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46
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47 /** @addtogroup STM32F4xx_LL_Driver
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48 * @{
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49 */
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50
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51 #if defined(CRC)
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52
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53 /** @defgroup CRC_LL CRC
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54 * @{
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55 */
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56
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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
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62 /* Exported types ------------------------------------------------------------*/
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63 /* Exported constants --------------------------------------------------------*/
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64
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65 /* Exported macro ------------------------------------------------------------*/
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66 /** @defgroup CRC_LL_Exported_Macros CRC Exported Macros
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67 * @{
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68 */
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69
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70 /** @defgroup CRC_LL_EM_WRITE_READ Common Write and read registers Macros
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71 * @{
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72 */
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73
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74 /**
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75 * @brief Write a value in CRC register
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76 * @param __INSTANCE__ CRC Instance
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77 * @param __REG__ Register to be written
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78 * @param __VALUE__ Value to be written in the register
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79 * @retval None
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80 */
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81 #define LL_CRC_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__))
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82
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83 /**
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84 * @brief Read a value in CRC register
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85 * @param __INSTANCE__ CRC Instance
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86 * @param __REG__ Register to be read
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87 * @retval Register value
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88 */
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89 #define LL_CRC_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
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90 /**
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91 * @}
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92 */
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93
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94 /**
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95 * @}
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96 */
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97
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98
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99 /* Exported functions --------------------------------------------------------*/
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100 /** @defgroup CRC_LL_Exported_Functions CRC Exported Functions
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101 * @{
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102 */
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103
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104 /** @defgroup CRC_LL_EF_Configuration CRC Configuration functions
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105 * @{
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106 */
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107
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108 /**
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109 * @brief Reset the CRC calculation unit.
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110 * @rmtoll CR RESET LL_CRC_ResetCRCCalculationUnit
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111 * @param CRCx CRC Instance
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112 * @retval None
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113 */
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114 __STATIC_INLINE void LL_CRC_ResetCRCCalculationUnit(CRC_TypeDef *CRCx)
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115 {
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116 WRITE_REG(CRCx->CR, CRC_CR_RESET);
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117 }
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118
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119 /**
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120 * @}
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121 */
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122
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123 /** @defgroup CRC_LL_EF_Data_Management Data_Management
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124 * @{
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125 */
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126
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127 /**
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128 * @brief Write given 32-bit data to the CRC calculator
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129 * @rmtoll DR DR LL_CRC_FeedData32
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130 * @param CRCx CRC Instance
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131 * @param InData value to be provided to CRC calculator between between Min_Data=0 and Max_Data=0xFFFFFFFF
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132 * @retval None
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133 */
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134 __STATIC_INLINE void LL_CRC_FeedData32(CRC_TypeDef *CRCx, uint32_t InData)
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135 {
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136 WRITE_REG(CRCx->DR, InData);
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137 }
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138
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139 /**
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140 * @brief Return current CRC calculation result. 32 bits value is returned.
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141 * @rmtoll DR DR LL_CRC_ReadData32
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142 * @param CRCx CRC Instance
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143 * @retval Current CRC calculation result as stored in CRC_DR register (32 bits).
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144 */
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145 __STATIC_INLINE uint32_t LL_CRC_ReadData32(CRC_TypeDef *CRCx)
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146 {
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147 return (uint32_t)(READ_REG(CRCx->DR));
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148 }
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149
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150 /**
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151 * @brief Return data stored in the Independent Data(IDR) register.
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152 * @note This register can be used as a temporary storage location for one byte.
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153 * @rmtoll IDR IDR LL_CRC_Read_IDR
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154 * @param CRCx CRC Instance
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155 * @retval Value stored in CRC_IDR register (General-purpose 8-bit data register).
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156 */
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157 __STATIC_INLINE uint32_t LL_CRC_Read_IDR(CRC_TypeDef *CRCx)
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158 {
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159 return (uint32_t)(READ_REG(CRCx->IDR));
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160 }
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161
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162 /**
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163 * @brief Store data in the Independent Data(IDR) register.
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164 * @note This register can be used as a temporary storage location for one byte.
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165 * @rmtoll IDR IDR LL_CRC_Write_IDR
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166 * @param CRCx CRC Instance
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167 * @param InData value to be stored in CRC_IDR register (8-bit) between between Min_Data=0 and Max_Data=0xFF
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168 * @retval None
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169 */
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170 __STATIC_INLINE void LL_CRC_Write_IDR(CRC_TypeDef *CRCx, uint32_t InData)
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171 {
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172 *((uint8_t __IO *)(&CRCx->IDR)) = (uint8_t) InData;
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173 }
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174 /**
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175 * @}
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176 */
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177
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178 #if defined(USE_FULL_LL_DRIVER)
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179 /** @defgroup CRC_LL_EF_Init Initialization and de-initialization functions
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180 * @{
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181 */
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182
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183 ErrorStatus LL_CRC_DeInit(CRC_TypeDef *CRCx);
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184
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185 /**
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186 * @}
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187 */
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188 #endif /* USE_FULL_LL_DRIVER */
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189
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190 /**
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191 * @}
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192 */
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193
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194 /**
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195 * @}
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196 */
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197
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198 #endif /* defined(CRC) */
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199
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200 /**
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201 * @}
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202 */
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203
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204 #ifdef __cplusplus
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205 }
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206 #endif
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207
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208 #endif /* __STM32F4xx_LL_CRC_H */
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209
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210 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/