Mercurial > public > ostc4
annotate Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_crc.c @ 181:331882a89421 Cleanup_Compass_Wireless
Removed not suppoted wireless feature
The code contains parts of a wireless sensor feature which is not supported by the OSTC4 hardware.
author | ideenmodellierer |
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date | Wed, 13 Mar 2019 21:51:25 +0100 |
parents | c78bcbd5deda |
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rev | line source |
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1 /** |
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2 ****************************************************************************** |
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3 * @file stm32f4xx_hal_crc.c |
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4 * @author MCD Application Team |
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5 * @brief CRC HAL module driver. |
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6 * This file provides firmware functions to manage the following |
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7 * functionalities of the Cyclic Redundancy Check (CRC) peripheral: |
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8 * + Initialization and de-initialization functions |
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9 * + Peripheral Control functions |
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10 * + Peripheral State functions |
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11 * |
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12 @verbatim |
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13 ============================================================================== |
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14 ##### How to use this driver ##### |
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15 ============================================================================== |
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16 [..] |
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17 The CRC HAL driver can be used as follows: |
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18 |
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19 (#) Enable CRC AHB clock using __HAL_RCC_CRC_CLK_ENABLE(); |
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20 |
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21 (#) Use HAL_CRC_Accumulate() function to compute the CRC value of |
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22 a 32-bit data buffer using combination of the previous CRC value |
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23 and the new one. |
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24 |
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25 (#) Use HAL_CRC_Calculate() function to compute the CRC Value of |
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26 a new 32-bit data buffer. This function resets the CRC computation |
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27 unit before starting the computation to avoid getting wrong CRC values. |
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28 |
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29 @endverbatim |
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30 ****************************************************************************** |
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31 * @attention |
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32 * |
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33 * <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2> |
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34 * |
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35 * Redistribution and use in source and binary forms, with or without modification, |
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36 * are permitted provided that the following conditions are met: |
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37 * 1. Redistributions of source code must retain the above copyright notice, |
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38 * this list of conditions and the following disclaimer. |
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39 * 2. Redistributions in binary form must reproduce the above copyright notice, |
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40 * this list of conditions and the following disclaimer in the documentation |
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41 * and/or other materials provided with the distribution. |
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42 * 3. Neither the name of STMicroelectronics nor the names of its contributors |
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43 * may be used to endorse or promote products derived from this software |
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44 * without specific prior written permission. |
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45 * |
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46 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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47 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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49 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
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50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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52 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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53 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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54 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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55 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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56 * |
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57 ****************************************************************************** |
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58 */ |
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59 |
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60 /* Includes ------------------------------------------------------------------*/ |
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61 #include "stm32f4xx_hal.h" |
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62 |
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63 /** @addtogroup STM32F4xx_HAL_Driver |
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64 * @{ |
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65 */ |
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66 |
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67 /** @addtogroup CRC |
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68 * @{ |
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69 */ |
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70 |
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71 #ifdef HAL_CRC_MODULE_ENABLED |
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72 |
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73 /* Private typedef -----------------------------------------------------------*/ |
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74 /* Private define ------------------------------------------------------------*/ |
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75 /* Private macro -------------------------------------------------------------*/ |
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76 /* Private variables ---------------------------------------------------------*/ |
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77 /* Private function prototypes -----------------------------------------------*/ |
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78 /* Private functions ---------------------------------------------------------*/ |
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79 /* Exported functions --------------------------------------------------------*/ |
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80 |
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81 /** @addtogroup CRC_Exported_Functions |
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82 * @{ |
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83 */ |
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84 |
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85 /** @addtogroup CRC_Exported_Functions_Group1 |
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86 * @brief Initialization and de-initialization functions |
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87 * |
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88 @verbatim |
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89 ============================================================================== |
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90 ##### Initialization and de-initialization functions ##### |
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91 ============================================================================== |
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92 [..] This section provides functions allowing to: |
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93 (+) Initialize the CRC according to the specified parameters |
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94 in the CRC_InitTypeDef and create the associated handle |
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95 (+) DeInitialize the CRC peripheral |
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96 (+) Initialize the CRC MSP |
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97 (+) DeInitialize CRC MSP |
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98 |
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99 @endverbatim |
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100 * @{ |
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101 */ |
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102 |
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103 /** |
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104 * @brief Initializes the CRC according to the specified |
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105 * parameters in the CRC_InitTypeDef and creates the associated handle. |
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106 * @param hcrc pointer to a CRC_HandleTypeDef structure that contains |
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107 * the configuration information for CRC |
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108 * @retval HAL status |
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109 */ |
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110 HAL_StatusTypeDef HAL_CRC_Init(CRC_HandleTypeDef *hcrc) |
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111 { |
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112 /* Check the CRC handle allocation */ |
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113 if(hcrc == NULL) |
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114 { |
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115 return HAL_ERROR; |
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116 } |
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117 |
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118 /* Check the parameters */ |
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119 assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance)); |
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120 |
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121 if(hcrc->State == HAL_CRC_STATE_RESET) |
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122 { |
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123 /* Allocate lock resource and initialize it */ |
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124 hcrc->Lock = HAL_UNLOCKED; |
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125 /* Init the low level hardware */ |
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126 HAL_CRC_MspInit(hcrc); |
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127 } |
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128 |
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129 /* Change CRC peripheral state */ |
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130 hcrc->State = HAL_CRC_STATE_BUSY; |
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131 |
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132 /* Change CRC peripheral state */ |
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133 hcrc->State = HAL_CRC_STATE_READY; |
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134 |
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135 /* Return function status */ |
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136 return HAL_OK; |
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137 } |
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138 |
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139 /** |
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140 * @brief DeInitializes the CRC peripheral. |
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141 * @param hcrc pointer to a CRC_HandleTypeDef structure that contains |
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142 * the configuration information for CRC |
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143 * @retval HAL status |
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144 */ |
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145 HAL_StatusTypeDef HAL_CRC_DeInit(CRC_HandleTypeDef *hcrc) |
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146 { |
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147 /* Check the CRC handle allocation */ |
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148 if(hcrc == NULL) |
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149 { |
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150 return HAL_ERROR; |
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151 } |
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152 |
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153 /* Check the parameters */ |
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154 assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance)); |
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155 |
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156 /* Change CRC peripheral state */ |
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157 hcrc->State = HAL_CRC_STATE_BUSY; |
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158 |
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159 /* DeInit the low level hardware */ |
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160 HAL_CRC_MspDeInit(hcrc); |
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161 |
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162 /* Change CRC peripheral state */ |
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163 hcrc->State = HAL_CRC_STATE_RESET; |
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164 |
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165 /* Release Lock */ |
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166 __HAL_UNLOCK(hcrc); |
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167 |
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168 /* Return function status */ |
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169 return HAL_OK; |
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170 } |
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171 |
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172 /** |
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173 * @brief Initializes the CRC MSP. |
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174 * @param hcrc pointer to a CRC_HandleTypeDef structure that contains |
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175 * the configuration information for CRC |
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176 * @retval None |
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177 */ |
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178 __weak void HAL_CRC_MspInit(CRC_HandleTypeDef *hcrc) |
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179 { |
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180 /* Prevent unused argument(s) compilation warning */ |
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181 UNUSED(hcrc); |
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182 /* NOTE : This function Should not be modified, when the callback is needed, |
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183 the HAL_CRC_MspInit could be implemented in the user file |
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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 * @brief DeInitializes the CRC MSP. |
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189 * @param hcrc pointer to a CRC_HandleTypeDef structure that contains |
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190 * the configuration information for CRC |
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191 * @retval None |
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192 */ |
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193 __weak void HAL_CRC_MspDeInit(CRC_HandleTypeDef *hcrc) |
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194 { |
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195 /* Prevent unused argument(s) compilation warning */ |
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196 UNUSED(hcrc); |
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197 /* NOTE : This function Should not be modified, when the callback is needed, |
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198 the HAL_CRC_MspDeInit could be implemented in the user file |
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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 */ |
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205 |
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206 /** @addtogroup CRC_Exported_Functions_Group2 |
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207 * @brief Peripheral Control functions |
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208 * |
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209 @verbatim |
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210 ============================================================================== |
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211 ##### Peripheral Control functions ##### |
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212 ============================================================================== |
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213 [..] This section provides functions allowing to: |
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214 (+) Compute the 32-bit CRC value of 32-bit data buffer, |
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215 using combination of the previous CRC value and the new one. |
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216 (+) Compute the 32-bit CRC value of 32-bit data buffer, |
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217 independently of the previous CRC value. |
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218 |
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219 @endverbatim |
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220 * @{ |
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221 */ |
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222 |
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223 /** |
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224 * @brief Computes the 32-bit CRC of 32-bit data buffer using combination |
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225 * of the previous CRC value and the new one. |
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226 * @param hcrc pointer to a CRC_HandleTypeDef structure that contains |
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227 * the configuration information for CRC |
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228 * @param pBuffer pointer to the buffer containing the data to be computed |
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229 * @param BufferLength length of the buffer to be computed |
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230 * @retval 32-bit CRC |
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231 */ |
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232 uint32_t HAL_CRC_Accumulate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength) |
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233 { |
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234 uint32_t index = 0U; |
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235 |
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236 /* Process Locked */ |
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237 __HAL_LOCK(hcrc); |
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238 |
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239 /* Change CRC peripheral state */ |
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240 hcrc->State = HAL_CRC_STATE_BUSY; |
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241 |
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242 /* Enter Data to the CRC calculator */ |
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243 for(index = 0U; index < BufferLength; index++) |
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244 { |
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245 hcrc->Instance->DR = pBuffer[index]; |
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246 } |
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247 |
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248 /* Change CRC peripheral state */ |
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249 hcrc->State = HAL_CRC_STATE_READY; |
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250 |
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251 /* Process Unlocked */ |
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252 __HAL_UNLOCK(hcrc); |
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253 |
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254 /* Return the CRC computed value */ |
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255 return hcrc->Instance->DR; |
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256 } |
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257 |
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258 /** |
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259 * @brief Computes the 32-bit CRC of 32-bit data buffer independently |
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260 * of the previous CRC value. |
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261 * @param hcrc pointer to a CRC_HandleTypeDef structure that contains |
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262 * the configuration information for CRC |
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263 * @param pBuffer Pointer to the buffer containing the data to be computed |
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264 * @param BufferLength Length of the buffer to be computed |
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265 * @retval 32-bit CRC |
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266 */ |
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267 uint32_t HAL_CRC_Calculate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength) |
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268 { |
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269 uint32_t index = 0U; |
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270 |
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271 /* Process Locked */ |
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272 __HAL_LOCK(hcrc); |
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273 |
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274 /* Change CRC peripheral state */ |
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275 hcrc->State = HAL_CRC_STATE_BUSY; |
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276 |
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277 /* Reset CRC Calculation Unit */ |
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278 __HAL_CRC_DR_RESET(hcrc); |
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279 |
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280 /* Enter Data to the CRC calculator */ |
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281 for(index = 0U; index < BufferLength; index++) |
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282 { |
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283 hcrc->Instance->DR = pBuffer[index]; |
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284 } |
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285 |
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286 /* Change CRC peripheral state */ |
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287 hcrc->State = HAL_CRC_STATE_READY; |
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288 |
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289 /* Process Unlocked */ |
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290 __HAL_UNLOCK(hcrc); |
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291 |
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292 /* Return the CRC computed value */ |
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293 return hcrc->Instance->DR; |
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294 } |
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295 |
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296 /** |
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297 * @} |
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298 */ |
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299 |
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300 |
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301 /** @addtogroup CRC_Exported_Functions_Group3 |
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302 * @brief Peripheral State functions |
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303 * |
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304 @verbatim |
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305 ============================================================================== |
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306 ##### Peripheral State functions ##### |
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307 ============================================================================== |
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308 [..] |
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309 This subsection permits to get in run-time the status of the peripheral |
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310 and the data flow. |
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311 |
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312 @endverbatim |
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313 * @{ |
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314 */ |
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315 |
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316 /** |
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317 * @brief Returns the CRC state. |
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318 * @param hcrc pointer to a CRC_HandleTypeDef structure that contains |
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319 * the configuration information for CRC |
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320 * @retval HAL state |
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321 */ |
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322 HAL_CRC_StateTypeDef HAL_CRC_GetState(CRC_HandleTypeDef *hcrc) |
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323 { |
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324 return hcrc->State; |
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325 } |
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326 |
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327 /** |
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328 * @} |
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329 */ |
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330 |
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331 /** |
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332 * @} |
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333 */ |
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334 |
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335 #endif /* HAL_CRC_MODULE_ENABLED */ |
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336 /** |
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337 * @} |
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338 */ |
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339 |
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340 /** |
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341 * @} |
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342 */ |
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343 |
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344 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |