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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/BKP/Backup_Data/main.c @ 0:c59513fd84fb
Initial commit of STM32 test code.
author | Daniel O'Connor <darius@dons.net.au> |
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date | Mon, 03 Oct 2011 21:19:15 +1030 |
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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>© 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****/ |