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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/BKP/Backup_Data/main.c @ 44:f1cc171b06b5

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Remove useless delay test. Add GPIO PE2 changes to make testing arbitary delays possible.
author Daniel O'Connor <darius@dons.net.au>
date Tue, 02 Apr 2013 10:54:20 +1030
parents c59513fd84fb
children
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1 /**
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2 ******************************************************************************
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3 * @file BKP/Backup_Data/main.c
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4 * @author MCD Application Team
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5 * @version V3.5.0
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6 * @date 08-April-2011
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7 * @brief Main program body.
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8 ******************************************************************************
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9 * @attention
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10 *
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11 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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12 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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13 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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14 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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15 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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16 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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17 *
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18 * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
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19 ******************************************************************************
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20 */
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21
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22 /* Includes ------------------------------------------------------------------*/
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23 #include "stm32f10x.h"
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24 #include "stm32_eval.h"
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25
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26 /** @addtogroup STM32F10x_StdPeriph_Examples
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27 * @{
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28 */
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29
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30 /** @addtogroup BKP_Backup_Data
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31 * @{
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32 */
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33
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34 /* Private typedef -----------------------------------------------------------*/
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35 /* Private define ------------------------------------------------------------*/
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36 #if defined USE_STM3210B_EVAL || defined USE_STM32100B_EVAL
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37 #define BKP_DR_NUMBER 10
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38 #else
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39 #define BKP_DR_NUMBER 42
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40 #endif /* USE_STM3210B_EVAL or USE_STM32100B_EVAL */
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41
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42 /* Private macro -------------------------------------------------------------*/
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43 /* Private variables ---------------------------------------------------------*/
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44 #if defined USE_STM3210B_EVAL || defined USE_STM32100B_EVAL
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45 uint16_t BKPDataReg[BKP_DR_NUMBER] =
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46 {
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47 BKP_DR1, BKP_DR2, BKP_DR3, BKP_DR4, BKP_DR5, BKP_DR6, BKP_DR7, BKP_DR8,
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48 BKP_DR9, BKP_DR10
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49 };
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50 #else
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51 uint16_t BKPDataReg[BKP_DR_NUMBER] =
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52 {
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53 BKP_DR1, BKP_DR2, BKP_DR3, BKP_DR4, BKP_DR5, BKP_DR6, BKP_DR7, BKP_DR8,
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54 BKP_DR9, BKP_DR10, BKP_DR11, BKP_DR12, BKP_DR13, BKP_DR14, BKP_DR15, BKP_DR16,
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55 BKP_DR17, BKP_DR18, BKP_DR19, BKP_DR20, BKP_DR21, BKP_DR22, BKP_DR23, BKP_DR24,
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56 BKP_DR25, BKP_DR26, BKP_DR27, BKP_DR28, BKP_DR29, BKP_DR30, BKP_DR31, BKP_DR32,
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57 BKP_DR33, BKP_DR34, BKP_DR35, BKP_DR36, BKP_DR37, BKP_DR38, BKP_DR39, BKP_DR40,
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58 BKP_DR41, BKP_DR42
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59 };
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60 #endif /* USE_STM3210B_EVAL or USE_STM32100B_EVAL */
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61
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62 /* Private function prototypes -----------------------------------------------*/
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63 void WriteToBackupReg(uint16_t FirstBackupData);
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64 uint8_t CheckBackupReg(uint16_t FirstBackupData);
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65
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66 /* Private functions ---------------------------------------------------------*/
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67
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68 /**
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69 * @brief Main program.
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70 * @param None
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71 * @retval None
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72 */
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73 int main(void)
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74 {
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75 /*!< At this stage the microcontroller clock setting is already configured,
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76 this is done through SystemInit() function which is called from startup
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77 file (startup_stm32f10x_xx.s) before to branch to application main.
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78 To reconfigure the default setting of SystemInit() function, refer to
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79 system_stm32f10x.c file
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80 */
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81
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82 /* Initialize Leds mounted on STM3210X-EVAL board */
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83 STM_EVAL_LEDInit(LED1);
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84 STM_EVAL_LEDInit(LED2);
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85 STM_EVAL_LEDInit(LED3);
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86 STM_EVAL_LEDInit(LED4);
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87
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88 /* Enable PWR and BKP clock */
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89 RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
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90
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91 /* Enable write access to Backup domain */
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92 PWR_BackupAccessCmd(ENABLE);
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93
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94 /* Clear Tamper pin Event(TE) pending flag */
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95 BKP_ClearFlag();
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96
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97 /* Check if the Power On Reset flag is set */
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98 if(RCC_GetFlagStatus(RCC_FLAG_PORRST) != RESET)
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99 {
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100 /* Clear reset flags */
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101 RCC_ClearFlag();
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102
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103 /* Turn on LED3 */
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104 STM_EVAL_LEDOn(LED3);
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105
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106 /* Check if Backup data registers are programmed */
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107 if(CheckBackupReg(0x3210) == 0x00)
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108 { /* Backup data registers values are correct */
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109
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110 /* Turn on LED1 */
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111 STM_EVAL_LEDOn(LED1);
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112 }
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113 else
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114 { /* Backup data registers values are not correct or they are not yet
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115 programmed (when the first time the program is executed) */
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116
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117 /* Write data to Backup data registers */
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118 WriteToBackupReg(0x3210);
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119
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120 /* Turn on LED2 */
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121 STM_EVAL_LEDOn(LED2);
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122 }
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123 }
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124
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125 /* Turn on LED4 */
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126 STM_EVAL_LEDOn(LED4);
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127
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128 while (1)
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129 {
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130 }
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131 }
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132
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133 /**
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134 * @brief Writes data Backup DRx registers.
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135 * @param FirstBackupData: data to be written to Backup data registers.
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136 * @retval None
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137 */
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138 void WriteToBackupReg(uint16_t FirstBackupData)
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139 {
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140 uint32_t index = 0;
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141
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142 for (index = 0; index < BKP_DR_NUMBER; index++)
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143 {
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144 BKP_WriteBackupRegister(BKPDataReg[index], FirstBackupData + (index * 0x5A));
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145 }
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146 }
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147
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148 /**
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149 * @brief Checks if the Backup DRx registers values are correct or not.
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150 * @param FirstBackupData: data to be compared with Backup data registers.
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151 * @retval
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152 * - 0: All Backup DRx registers values are correct
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153 * - Value different from 0: Number of the first Backup register
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154 * which value is not correct
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155 */
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156 uint8_t CheckBackupReg(uint16_t FirstBackupData)
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157 {
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158 uint32_t index = 0;
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159
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160 for (index = 0; index < BKP_DR_NUMBER; index++)
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161 {
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162 if (BKP_ReadBackupRegister(BKPDataReg[index]) != (FirstBackupData + (index * 0x5A)))
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163 {
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164 return (index + 1);
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165 }
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166 }
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167
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168 return 0;
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169 }
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170
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171 #ifdef USE_FULL_ASSERT
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172
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173 /**
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174 * @brief Reports the name of the source file and the source line number
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175 * where the assert_param error has occurred.
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176 * @param file: pointer to the source file name
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177 * @param line: assert_param error line source number
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178 * @retval None
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179 */
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180 void assert_failed(uint8_t* file, uint32_t line)
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181 {
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182 /* User can add his own implementation to report the file name and line number,
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183 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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184
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185 /* Infinite loop */
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186 while (1)
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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 #endif
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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 * @}
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199 */
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200
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201 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/