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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/CEC/DataExchangeInterrupt/main.c @ 44:f1cc171b06b5
Remove useless delay test. Add GPIO PE2 changes to make testing arbitary delays possible.
author | Daniel O'Connor <darius@dons.net.au> |
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date | Tue, 02 Apr 2013 10:54:20 +1030 |
parents | c59513fd84fb |
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1 /** |
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2 ****************************************************************************** |
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3 * @file CEC/DataExchangeInterrupt/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 CEC_DataExchangeInterrupt |
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31 * @{ |
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32 */ |
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33 |
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34 |
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35 /* Private typedef -----------------------------------------------------------*/ |
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36 typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus; |
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37 |
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38 /* Private define ------------------------------------------------------------*/ |
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39 /* Private macro -------------------------------------------------------------*/ |
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40 /* Private variables ---------------------------------------------------------*/ |
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41 CEC_InitTypeDef CEC_InitStructure; |
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42 |
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43 uint8_t ByteNumber = 10; |
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44 volatile TestStatus TransferStatus = FAILED; |
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45 extern uint8_t TransmitBuffer[10]; |
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46 extern uint8_t ReceiveBuffer[10]; |
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47 extern __IO uint8_t ReceivedFrame; |
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48 |
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49 /* Private function prototypes -----------------------------------------------*/ |
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50 void RCC_Configuration(void); |
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51 void NVIC_Configuration(void); |
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52 void GPIO_Configuration(void); |
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53 TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength); |
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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 /* RCC configuration */ |
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72 RCC_Configuration(); |
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73 |
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74 /* NVIC configuration */ |
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75 NVIC_Configuration(); |
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76 |
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77 /* GPIO configuration */ |
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78 GPIO_Configuration(); |
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79 |
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80 /* Configure the CEC peripheral */ |
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81 CEC_InitStructure.CEC_BitTimingMode = CEC_BitTimingStdMode; |
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82 CEC_InitStructure.CEC_BitPeriodMode = CEC_BitPeriodStdMode; |
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83 CEC_Init(&CEC_InitStructure); |
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84 |
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85 /* Set Prescaler value for APB1 clock PCLK1 = 24MHz */ |
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86 CEC_SetPrescaler(0x4AF); |
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87 |
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88 /* Set the CEC initiator address */ |
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89 CEC_OwnAddressConfig(MY_DEVICE_ADDRESS); |
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90 |
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91 /* Activate CEC interrupts associated to the set of RBTF,RERR, TBTF, TERR flags */ |
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92 CEC_ITConfig(ENABLE); |
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93 |
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94 /* Enable CEC */ |
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95 CEC_Cmd(ENABLE); |
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96 |
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97 /* If a frame has been received */ |
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98 while(ReceivedFrame == 0) |
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99 { |
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100 } |
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101 |
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102 /* Check the received data with the send ones */ |
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103 TransferStatus = Buffercmp(TransmitBuffer, ReceiveBuffer, ByteNumber); |
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104 /* TransferStatus = PASSED, if the data transmitted from CEC Device1 and |
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105 received by CEC Device2 are the same */ |
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106 /* TransferStatus = FAILED, if the data transmitted from CEC Device1 and |
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107 received by CEC Device2 are different */ |
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108 |
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109 if (TransferStatus == PASSED) |
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110 { |
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111 /* OK */ |
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112 /* Turn on LED1 */ |
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113 STM_EVAL_LEDOn(LED1); |
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114 } |
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115 else |
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116 { |
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117 /* KO */ |
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118 /* Turn on LED2 */ |
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119 STM_EVAL_LEDOn(LED2); |
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120 } |
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121 while(1) |
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122 { |
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123 } |
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124 } |
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125 |
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126 /** |
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127 * @brief Configures the different system clocks. |
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128 * @param None |
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129 * @retval None |
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130 */ |
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131 void RCC_Configuration(void) |
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132 { |
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133 /* Enable CEC clock */ |
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134 RCC_APB1PeriphClockCmd(RCC_APB1Periph_CEC, ENABLE); |
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135 |
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136 /* Initialize LEDs and Key Button available on STM32F100B-EVAL board ***/ |
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137 /* Configure LED1, LED2, LED3 and LED4 */ |
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138 STM_EVAL_LEDInit(LED1); |
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139 STM_EVAL_LEDInit(LED2); |
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140 STM_EVAL_LEDInit(LED3); |
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141 STM_EVAL_LEDInit(LED4); |
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142 |
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143 /* Configure the Key Push button and its associated EXTI Line */ |
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144 STM_EVAL_PBInit(Button_KEY, Mode_EXTI); |
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145 } |
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146 |
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147 /** |
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148 * @brief Configures the different NVIC interrupts. |
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149 * @param None |
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150 * @retval None |
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151 */ |
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152 void NVIC_Configuration(void) |
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153 { |
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154 NVIC_InitTypeDef NVIC_InitStructure; |
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155 |
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156 /* Configure two bits for preemption priority */ |
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157 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); |
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158 |
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159 /* Enable the CEC global Interrupt (with higher priority) */ |
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160 NVIC_InitStructure.NVIC_IRQChannel = CEC_IRQn; |
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161 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; |
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162 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; |
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163 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; |
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164 NVIC_Init(&NVIC_InitStructure); |
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165 } |
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166 |
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167 /** |
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168 * @brief Configures the different GPIO ports. |
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169 * @param None |
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170 * @retval None |
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171 */ |
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172 void GPIO_Configuration(void) |
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173 { |
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174 GPIO_InitTypeDef GPIO_InitStructure; |
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175 |
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176 /* Enable GPIOB clocks */ |
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177 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); |
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178 |
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179 /* Configure GPIOB Pin 8 (CEC line) as Output open drain */ |
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180 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; |
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181 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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182 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD; |
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183 GPIO_Init(GPIOB, &GPIO_InitStructure); |
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184 } |
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185 |
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186 /** |
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187 * @brief Compares two buffers. |
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188 * @param pBuffer1, pBuffer2: buffers to be compared. |
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189 * @param BufferLength: buffer's length |
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190 * @retval PASSED: pBuffer1 identical to pBuffer2 |
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191 * FAILED: pBuffer1 differs from pBuffer2 |
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192 */ |
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193 TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength) |
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194 { |
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195 while(BufferLength--) |
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196 { |
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197 if(*pBuffer1 != *pBuffer2) |
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198 { |
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199 return FAILED; |
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200 } |
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201 |
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202 pBuffer1++; |
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203 pBuffer2++; |
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204 } |
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205 |
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206 return PASSED; |
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207 } |
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208 |
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209 #ifdef USE_FULL_ASSERT |
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210 |
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211 /** |
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212 * @brief Reports the name of the source file and the source line number |
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213 * where the assert_param error has occurred. |
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214 * @param file: pointer to the source file name |
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215 * @param line: assert_param error line source number |
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216 * @retval None |
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217 */ |
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218 void assert_failed(uint8_t* file, uint32_t line) |
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219 { |
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220 /* User can add his own implementation to report the file name and line number, |
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221 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ |
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222 |
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223 /* Infinite loop */ |
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224 while (1) |
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225 { |
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226 } |
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227 } |
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228 |
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229 #endif |
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230 |
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231 /** |
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232 * @} |
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233 */ |
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234 |
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235 /** |
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236 * @} |
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237 */ |
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238 |
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239 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |