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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/USART/Interrupt/main.c @ 48:2f336d212c74
Ignore more emacs crap.
author | Daniel O'Connor <darius@dons.net.au> |
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date | Wed, 03 Apr 2013 23:33:47 +1030 |
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1 /** |
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2 ****************************************************************************** |
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3 * @file USART/Interrupt/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_Interrupt |
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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 typedef enum { FAILED = 0, PASSED = !FAILED} TestStatus; |
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36 |
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37 /* Private define ------------------------------------------------------------*/ |
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38 #define TxBufferSize1 (countof(TxBuffer1) - 1) |
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39 #define TxBufferSize2 (countof(TxBuffer2) - 1) |
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40 #define RxBufferSize1 TxBufferSize2 |
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41 #define RxBufferSize2 TxBufferSize1 |
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42 |
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43 /* Private macro -------------------------------------------------------------*/ |
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44 #define countof(a) (sizeof(a) / sizeof(*(a))) |
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45 |
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46 /* Private variables ---------------------------------------------------------*/ |
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47 USART_InitTypeDef USART_InitStructure; |
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48 uint8_t TxBuffer1[] = "USART Interrupt Example: USARTy -> USARTz using Interrupt"; |
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49 uint8_t TxBuffer2[] = "USART Interrupt Example: USARTz -> USARTy using Interrupt"; |
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50 uint8_t RxBuffer1[RxBufferSize1]; |
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51 uint8_t RxBuffer2[RxBufferSize2]; |
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52 __IO uint8_t TxCounter1 = 0x00; |
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53 __IO uint8_t TxCounter2 = 0x00; |
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54 __IO uint8_t RxCounter1 = 0x00; |
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55 __IO uint8_t RxCounter2 = 0x00; |
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56 uint8_t NbrOfDataToTransfer1 = TxBufferSize1; |
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57 uint8_t NbrOfDataToTransfer2 = TxBufferSize2; |
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58 uint8_t NbrOfDataToRead1 = RxBufferSize1; |
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59 uint8_t NbrOfDataToRead2 = RxBufferSize2; |
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60 __IO TestStatus TransferStatus1 = FAILED; |
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61 __IO TestStatus TransferStatus2 = FAILED; |
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62 |
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63 /* Private function prototypes -----------------------------------------------*/ |
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64 void RCC_Configuration(void); |
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65 void GPIO_Configuration(void); |
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66 void NVIC_Configuration(void); |
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67 TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength); |
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68 |
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69 /* Private functions ---------------------------------------------------------*/ |
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70 |
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71 /** |
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72 * @brief Main program |
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73 * @param None |
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74 * @retval None |
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75 */ |
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76 int main(void) |
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77 { |
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78 /*!< At this stage the microcontroller clock setting is already configured, |
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79 this is done through SystemInit() function which is called from startup |
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80 file (startup_stm32f10x_xx.s) before to branch to application main. |
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81 To reconfigure the default setting of SystemInit() function, refer to |
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82 system_stm32f10x.c file |
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83 */ |
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84 |
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85 /* System Clocks Configuration */ |
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86 RCC_Configuration(); |
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87 |
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88 /* NVIC configuration */ |
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89 NVIC_Configuration(); |
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90 |
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91 /* Configure the GPIO ports */ |
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92 GPIO_Configuration(); |
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93 |
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94 /* USARTy and USARTz configuration ------------------------------------------------------*/ |
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95 /* USARTy and USARTz configured as follow: |
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96 - BaudRate = 9600 baud |
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97 - Word Length = 8 Bits |
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98 - One Stop Bit |
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99 - No parity |
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100 - Hardware flow control disabled (RTS and CTS signals) |
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101 - Receive and transmit enabled |
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102 */ |
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103 USART_InitStructure.USART_BaudRate = 9600; |
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104 USART_InitStructure.USART_WordLength = USART_WordLength_8b; |
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105 USART_InitStructure.USART_StopBits = USART_StopBits_1; |
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106 USART_InitStructure.USART_Parity = USART_Parity_No; |
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107 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; |
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108 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; |
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109 |
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110 /* Configure USARTy */ |
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111 USART_Init(USARTy, &USART_InitStructure); |
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112 /* Configure USARTz */ |
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113 USART_Init(USARTz, &USART_InitStructure); |
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114 |
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115 /* Enable USARTy Receive and Transmit interrupts */ |
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116 USART_ITConfig(USARTy, USART_IT_RXNE, ENABLE); |
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117 USART_ITConfig(USARTy, USART_IT_TXE, ENABLE); |
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118 |
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119 /* Enable USARTz Receive and Transmit interrupts */ |
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120 USART_ITConfig(USARTz, USART_IT_RXNE, ENABLE); |
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121 USART_ITConfig(USARTz, USART_IT_TXE, ENABLE); |
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122 |
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123 /* Enable the USARTy */ |
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124 USART_Cmd(USARTy, ENABLE); |
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125 /* Enable the USARTz */ |
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126 USART_Cmd(USARTz, ENABLE); |
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127 |
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128 /* Wait until end of transmission from USARTy to USARTz */ |
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129 while(RxCounter2 < RxBufferSize2) |
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130 { |
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131 } |
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132 |
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133 /* Wait until end of transmission from USARTz to USARTy */ |
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134 while(RxCounter1 < RxBufferSize1) |
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135 { |
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136 } |
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137 |
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138 /* Check the received data with the send ones */ |
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139 TransferStatus1 = Buffercmp(TxBuffer2, RxBuffer1, RxBufferSize1); |
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140 /* TransferStatus1 = PASSED, if the data transmitted from USARTz and |
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141 received by USARTy are the same */ |
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142 /* TransferStatus1 = FAILED, if the data transmitted from USARTz and |
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143 received by USARTy are different */ |
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144 TransferStatus2 = Buffercmp(TxBuffer1, RxBuffer2, RxBufferSize2); |
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145 /* TransferStatus2 = PASSED, if the data transmitted from USARTy and |
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146 received by USARTz are the same */ |
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147 /* TransferStatus2 = FAILED, if the data transmitted from USARTy and |
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148 received by USARTz are different */ |
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149 |
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150 while (1) |
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151 { |
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152 } |
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153 } |
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154 |
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155 /** |
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156 * @brief Configures the different system clocks. |
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157 * @param None |
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158 * @retval None |
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159 */ |
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160 void RCC_Configuration(void) |
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161 { |
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162 /* Enable GPIO clock */ |
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163 RCC_APB2PeriphClockCmd(USARTy_GPIO_CLK | USARTz_GPIO_CLK | RCC_APB2Periph_AFIO, ENABLE); |
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164 |
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165 #ifndef USE_STM3210C_EVAL |
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166 /* Enable USARTy Clock */ |
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167 RCC_APB2PeriphClockCmd(USARTy_CLK, ENABLE); |
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168 #else |
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169 /* Enable USARTy Clock */ |
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170 RCC_APB1PeriphClockCmd(USARTy_CLK, ENABLE); |
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171 #endif |
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172 /* Enable USARTz Clock */ |
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173 RCC_APB1PeriphClockCmd(USARTz_CLK, ENABLE); |
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174 } |
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175 |
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176 /** |
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177 * @brief Configures the different GPIO ports. |
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178 * @param None |
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179 * @retval None |
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180 */ |
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181 void GPIO_Configuration(void) |
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182 { |
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183 GPIO_InitTypeDef GPIO_InitStructure; |
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184 |
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185 #ifdef USE_STM3210C_EVAL |
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186 /* Enable the USART3 Pins Software Remapping */ |
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187 GPIO_PinRemapConfig(GPIO_PartialRemap_USART3, ENABLE); |
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188 |
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189 /* Enable the USART2 Pins Software Remapping */ |
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190 GPIO_PinRemapConfig(GPIO_Remap_USART2, ENABLE); |
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191 #elif defined USE_STM3210B_EVAL || defined USE_STM32100B_EVAL |
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192 /* Enable the USART2 Pins Software Remapping */ |
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193 GPIO_PinRemapConfig(GPIO_Remap_USART2, ENABLE); |
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194 #endif |
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195 |
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196 /* Configure USARTy Rx as input floating */ |
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197 GPIO_InitStructure.GPIO_Pin = USARTy_RxPin; |
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198 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; |
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199 GPIO_Init(USARTy_GPIO, &GPIO_InitStructure); |
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200 |
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201 /* Configure USARTz Rx as input floating */ |
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202 GPIO_InitStructure.GPIO_Pin = USARTz_RxPin; |
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203 GPIO_Init(USARTz_GPIO, &GPIO_InitStructure); |
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204 |
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205 /* Configure USARTy Tx as alternate function push-pull */ |
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206 GPIO_InitStructure.GPIO_Pin = USARTy_TxPin; |
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207 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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208 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; |
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209 GPIO_Init(USARTy_GPIO, &GPIO_InitStructure); |
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210 |
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211 /* Configure USARTz Tx as alternate function push-pull */ |
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212 GPIO_InitStructure.GPIO_Pin = USARTz_TxPin; |
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213 GPIO_Init(USARTz_GPIO, &GPIO_InitStructure); |
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214 } |
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215 |
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216 /** |
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217 * @brief Configures the nested vectored interrupt controller. |
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218 * @param None |
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219 * @retval None |
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220 */ |
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221 void NVIC_Configuration(void) |
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222 { |
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223 NVIC_InitTypeDef NVIC_InitStructure; |
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224 |
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225 /* Configure the NVIC Preemption Priority Bits */ |
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226 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); |
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227 |
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228 /* Enable the USARTy Interrupt */ |
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229 NVIC_InitStructure.NVIC_IRQChannel = USARTy_IRQn; |
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230 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; |
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231 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; |
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232 NVIC_Init(&NVIC_InitStructure); |
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233 |
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234 /* Enable the USARTz Interrupt */ |
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235 NVIC_InitStructure.NVIC_IRQChannel = USARTz_IRQn; |
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236 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; |
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237 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; |
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238 NVIC_Init(&NVIC_InitStructure); |
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239 } |
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240 |
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241 /** |
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242 * @brief Compares two buffers. |
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243 * @param pBuffer1, pBuffer2: buffers to be compared. |
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244 * @param BufferLength: buffer's length |
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245 * @retval PASSED: pBuffer1 identical to pBuffer2 |
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246 * FAILED: pBuffer1 differs from pBuffer2 |
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247 */ |
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248 TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength) |
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249 { |
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250 while(BufferLength--) |
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251 { |
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252 if(*pBuffer1 != *pBuffer2) |
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253 { |
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254 return FAILED; |
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255 } |
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256 |
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257 pBuffer1++; |
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258 pBuffer2++; |
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259 } |
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260 |
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261 return PASSED; |
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262 } |
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263 |
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264 #ifdef USE_FULL_ASSERT |
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265 |
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266 /** |
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267 * @brief Reports the name of the source file and the source line number |
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268 * where the assert_param error has occurred. |
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269 * @param file: pointer to the source file name |
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270 * @param line: assert_param error line source number |
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271 * @retval None |
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272 */ |
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273 void assert_failed(uint8_t* file, uint32_t line) |
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274 { |
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275 /* User can add his own implementation to report the file name and line number, |
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276 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ |
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277 |
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278 /* Infinite loop */ |
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279 while (1) |
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280 { |
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281 } |
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282 } |
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283 |
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284 #endif |
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285 |
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286 /** |
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287 * @} |
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288 */ |
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289 |
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290 /** |
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291 * @} |
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292 */ |
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293 |
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294 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |