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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/USART/HyperTerminal_HwFlowControl/main.c @ 89:fc21fb5b171b default tip
Make error message more useful
author | Daniel O'Connor <darius@dons.net.au> |
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date | Fri, 13 Mar 2015 11:39:59 +1030 |
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1 /** |
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2 ****************************************************************************** |
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3 * @file USART/HyperTerminal_HwFlowControl/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 "platform_config.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 USART_HyperTerminal_HwFlowControl |
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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 #define TxBufferSize (countof(TxBuffer) - 1) |
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37 #define RxBufferSize 0xFF |
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38 |
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39 /* Private macro -------------------------------------------------------------*/ |
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40 #define countof(a) (sizeof(a) / sizeof(*(a))) |
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41 |
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42 /* Private variables ---------------------------------------------------------*/ |
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43 USART_InitTypeDef USART_InitStructure; |
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44 uint8_t TxBuffer[] = "\n\rUSART Hyperterminal Hardware Flow Control Example: USART - \ |
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45 Hyperterminal communication using hardware flow control\n\r"; |
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46 uint8_t RxBuffer[RxBufferSize]; |
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47 uint8_t NbrOfDataToTransfer = TxBufferSize; |
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48 uint8_t TxCounter = 0; |
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49 uint8_t RxCounter = 0; |
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50 |
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51 /* Private function prototypes -----------------------------------------------*/ |
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52 void RCC_Configuration(void); |
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53 void GPIO_Configuration(void); |
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54 |
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55 /* Private functions ---------------------------------------------------------*/ |
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56 |
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57 /** |
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58 * @brief Main program |
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59 * @param None |
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60 * @retval None |
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61 */ |
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62 int main(void) |
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63 { |
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64 /*!< At this stage the microcontroller clock setting is already configured, |
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65 this is done through SystemInit() function which is called from startup |
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66 file (startup_stm32f10x_xx.s) before to branch to application main. |
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67 To reconfigure the default setting of SystemInit() function, refer to |
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68 system_stm32f10x.c file |
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69 */ |
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70 |
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71 /* System Clocks Configuration */ |
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72 RCC_Configuration(); |
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73 |
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74 /* Configure the GPIO ports */ |
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75 GPIO_Configuration(); |
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76 |
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77 /* USART2 configuration ------------------------------------------------------*/ |
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78 /* USART2 configured as follow: |
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79 - BaudRate = 115200 baud |
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80 - Word Length = 8 Bits |
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81 - One Stop Bit |
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82 - No parity |
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83 - Hardware flow control enabled (RTS and CTS signals) |
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84 - Receive and transmit enabled |
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85 */ |
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86 USART_InitStructure.USART_BaudRate = 115200; |
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87 USART_InitStructure.USART_WordLength = USART_WordLength_8b; |
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88 USART_InitStructure.USART_StopBits = USART_StopBits_1; |
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89 USART_InitStructure.USART_Parity = USART_Parity_No ; |
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90 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_RTS_CTS; |
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91 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; |
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92 |
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93 USART_Init(USART2, &USART_InitStructure); |
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94 /* Enable the USART2 */ |
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95 USART_Cmd(USART2, ENABLE); |
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96 |
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97 /* Communication hyperterminal-USART2 using hardware flow control -------------*/ |
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98 /* Send a buffer from USART to hyperterminal */ |
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99 while(NbrOfDataToTransfer--) |
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100 { |
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101 USART_SendData(USART2, TxBuffer[TxCounter++]); |
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102 while(USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET); |
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103 } |
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104 |
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105 /* Receive a string (Max RxBufferSize bytes) from the Hyperterminal ended by '\r' (Enter key) */ |
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106 do |
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107 { |
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108 if((USART_GetFlagStatus(USART2, USART_FLAG_RXNE) != RESET)&&(RxCounter < RxBufferSize)) |
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109 { |
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110 RxBuffer[RxCounter] = USART_ReceiveData(USART2); |
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111 USART_SendData(USART2, RxBuffer[RxCounter++]); |
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112 } |
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113 |
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114 }while((RxBuffer[RxCounter - 1] != '\r')&&(RxCounter != RxBufferSize)); |
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115 |
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116 while (1) |
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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 * @brief Configures the different system clocks. |
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123 * @param None |
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124 * @retval None |
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125 */ |
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126 void RCC_Configuration(void) |
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127 { |
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128 /* Enable GPIOx and AFIO clocks */ |
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129 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOx | RCC_APB2Periph_AFIO, ENABLE); |
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130 |
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131 /* Enable USART2 clocks */ |
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132 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); |
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133 } |
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134 |
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135 /** |
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136 * @brief Configures the different GPIO ports. |
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137 * @param None |
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138 * @retval None |
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139 */ |
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140 void GPIO_Configuration(void) |
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141 { |
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142 GPIO_InitTypeDef GPIO_InitStructure; |
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143 |
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144 #if defined(USE_STM3210B_EVAL) || defined(USE_STM32100B_EVAL) |
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145 /* Enable the USART2 Pins Software Remapping */ |
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146 GPIO_PinRemapConfig(GPIO_Remap_USART2, ENABLE); |
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147 #endif |
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148 |
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149 /* Configure USART2 RTS and USART2 Tx as alternate function push-pull */ |
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150 GPIO_InitStructure.GPIO_Pin = GPIO_RTSPin | GPIO_TxPin; |
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151 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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152 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; |
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153 GPIO_Init(GPIOx, &GPIO_InitStructure); |
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154 |
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155 /* Configure USART2 CTS and USART2 Rx as input floating */ |
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156 GPIO_InitStructure.GPIO_Pin = GPIO_CTSPin | GPIO_RxPin; |
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157 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; |
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158 GPIO_Init(GPIOx, &GPIO_InitStructure); |
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159 } |
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160 |
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161 #ifdef USE_FULL_ASSERT |
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162 |
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163 /** |
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164 * @brief Reports the name of the source file and the source line number |
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165 * where the assert_param error has occurred. |
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166 * @param file: pointer to the source file name |
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167 * @param line: assert_param error line source number |
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168 * @retval None |
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169 */ |
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170 void assert_failed(uint8_t* file, uint32_t line) |
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171 { |
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172 /* User can add his own implementation to report the file name and line number, |
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173 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ |
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174 |
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175 /* Infinite loop */ |
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176 while (1) |
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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 |
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182 |
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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 2011 STMicroelectronics *****END OF FILE****/ |