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1 /**
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2 ******************************************************************************
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3 * @file stm32f4xx_hal_flash_ramfunc.c
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4 * @author MCD Application Team
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5 * @brief FLASH RAMFUNC module driver.
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6 * This file provides a FLASH firmware functions which should be
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7 * executed from internal SRAM
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8 * + Stop/Start the flash interface while System Run
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9 * + Enable/Disable the flash sleep while System Run
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10 @verbatim
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11 ==============================================================================
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12 ##### APIs executed from Internal RAM #####
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13 ==============================================================================
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14 [..]
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15 *** ARM Compiler ***
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16 --------------------
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17 [..] RAM functions are defined using the toolchain options.
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18 Functions that are be executed in RAM should reside in a separate
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19 source module. Using the 'Options for File' dialog you can simply change
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20 the 'Code / Const' area of a module to a memory space in physical RAM.
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21 Available memory areas are declared in the 'Target' tab of the
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22 Options for Target' dialog.
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23
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24 *** ICCARM Compiler ***
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25 -----------------------
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26 [..] RAM functions are defined using a specific toolchain keyword "__ramfunc".
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27
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28 *** GNU Compiler ***
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29 --------------------
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30 [..] RAM functions are defined using a specific toolchain attribute
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31 "__attribute__((section(".RamFunc")))".
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32
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33 @endverbatim
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34 ******************************************************************************
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35 * @attention
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36 *
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37 * <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
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38 *
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39 * Redistribution and use in source and binary forms, with or without modification,
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40 * are permitted provided that the following conditions are met:
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41 * 1. Redistributions of source code must retain the above copyright notice,
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42 * this list of conditions and the following disclaimer.
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43 * 2. Redistributions in binary form must reproduce the above copyright notice,
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44 * this list of conditions and the following disclaimer in the documentation
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45 * and/or other materials provided with the distribution.
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46 * 3. Neither the name of STMicroelectronics nor the names of its contributors
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47 * may be used to endorse or promote products derived from this software
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48 * without specific prior written permission.
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49 *
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50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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51 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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53 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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56 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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57 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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58 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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60 *
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61 ******************************************************************************
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62 */
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63
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64 /* Includes ------------------------------------------------------------------*/
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65 #include "stm32f4xx_hal.h"
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66
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67 /** @addtogroup STM32F4xx_HAL_Driver
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68 * @{
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69 */
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70
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71 /** @defgroup FLASH_RAMFUNC FLASH RAMFUNC
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72 * @brief FLASH functions executed from RAM
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73 * @{
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74 */
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75 #ifdef HAL_FLASH_MODULE_ENABLED
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76 #if defined(STM32F410Tx) || defined(STM32F410Cx) || defined(STM32F410Rx) || defined(STM32F411xE) || defined(STM32F446xx) || defined(STM32F412Zx) || defined(STM32F412Vx) || \
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77 defined(STM32F412Rx) || defined(STM32F412Cx)
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78
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79 /* Private typedef -----------------------------------------------------------*/
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80 /* Private define ------------------------------------------------------------*/
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81 /* Private macro -------------------------------------------------------------*/
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82 /* Private variables ---------------------------------------------------------*/
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83 /* Private function prototypes -----------------------------------------------*/
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84 /* Exported functions --------------------------------------------------------*/
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85 /** @defgroup FLASH_RAMFUNC_Exported_Functions FLASH RAMFUNC Exported Functions
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86 * @{
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87 */
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88
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89 /** @defgroup FLASH_RAMFUNC_Exported_Functions_Group1 Peripheral features functions executed from internal RAM
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90 * @brief Peripheral Extended features functions
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91 *
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92 @verbatim
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93
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94 ===============================================================================
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95 ##### ramfunc functions #####
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96 ===============================================================================
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97 [..]
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98 This subsection provides a set of functions that should be executed from RAM
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99 transfers.
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100
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101 @endverbatim
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102 * @{
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103 */
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104
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105 /**
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106 * @brief Stop the flash interface while System Run
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107 * @note This mode is only available for STM32F41xxx/STM32F446xx devices.
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108 * @note This mode couldn't be set while executing with the flash itself.
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109 * It should be done with specific routine executed from RAM.
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110 * @retval HAL status
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111 */
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112 __RAM_FUNC HAL_StatusTypeDef HAL_FLASHEx_StopFlashInterfaceClk(void)
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113 {
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114 /* Enable Power ctrl clock */
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115 __HAL_RCC_PWR_CLK_ENABLE();
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116 /* Stop the flash interface while System Run */
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117 SET_BIT(PWR->CR, PWR_CR_FISSR);
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118
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119 return HAL_OK;
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120 }
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121
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122 /**
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123 * @brief Start the flash interface while System Run
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124 * @note This mode is only available for STM32F411xx/STM32F446xx devices.
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125 * @note This mode couldn't be set while executing with the flash itself.
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126 * It should be done with specific routine executed from RAM.
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127 * @retval HAL status
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128 */
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129 __RAM_FUNC HAL_StatusTypeDef HAL_FLASHEx_StartFlashInterfaceClk(void)
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130 {
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131 /* Enable Power ctrl clock */
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132 __HAL_RCC_PWR_CLK_ENABLE();
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133 /* Start the flash interface while System Run */
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134 CLEAR_BIT(PWR->CR, PWR_CR_FISSR);
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135
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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 Enable the flash sleep while System Run
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141 * @note This mode is only available for STM32F41xxx/STM32F446xx devices.
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142 * @note This mode could n't be set while executing with the flash itself.
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143 * It should be done with specific routine executed from RAM.
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144 * @retval HAL status
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145 */
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146 __RAM_FUNC HAL_StatusTypeDef HAL_FLASHEx_EnableFlashSleepMode(void)
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147 {
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148 /* Enable Power ctrl clock */
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149 __HAL_RCC_PWR_CLK_ENABLE();
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150 /* Enable the flash sleep while System Run */
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151 SET_BIT(PWR->CR, PWR_CR_FMSSR);
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152
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153 return HAL_OK;
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154 }
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155
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156 /**
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157 * @brief Disable the flash sleep while System Run
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158 * @note This mode is only available for STM32F41xxx/STM32F446xx devices.
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159 * @note This mode couldn't be set while executing with the flash itself.
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160 * It should be done with specific routine executed from RAM.
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161 * @retval HAL status
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162 */
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163 __RAM_FUNC HAL_StatusTypeDef HAL_FLASHEx_DisableFlashSleepMode(void)
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164 {
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165 /* Enable Power ctrl clock */
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166 __HAL_RCC_PWR_CLK_ENABLE();
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167 /* Disable the flash sleep while System Run */
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168 CLEAR_BIT(PWR->CR, PWR_CR_FMSSR);
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169
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170 return HAL_OK;
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171 }
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172
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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 * @}
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179 */
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180
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181 #endif /* STM32F410xx || STM32F411xE || STM32F446xx || STM32F412Zx || STM32F412Vx || STM32F412Rx || STM32F412Cx */
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182 #endif /* HAL_FLASH_MODULE_ENABLED */
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183 /**
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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 * @}
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189 */
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190
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191 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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