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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/CEC/DataExchangeInterrupt/stm32f10x_it.c @ 85:18b154c447bb

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Add note about 1-wire wiring
author Daniel O'Connor <darius@dons.net.au>
date Thu, 12 Mar 2015 23:22:11 +1030
parents c59513fd84fb
children
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1 /**
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2 ******************************************************************************
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3 * @file CEC/DataExchangeInterrupt/stm32f10x_it.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 Interrupt Service Routines.
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8 * This file provides template for all exceptions handler and
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9 * peripherals interrupt service routine.
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10 ******************************************************************************
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11 * @attention
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12 *
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13 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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14 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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15 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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16 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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17 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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18 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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19 *
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20 * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
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21 ******************************************************************************
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22 */
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23
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24 /* Includes ------------------------------------------------------------------*/
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25 #include "stm32f10x_it.h"
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26 #include "stm32_eval.h"
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27
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28 /** @addtogroup STM32F10x_StdPeriph_Examples
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29 * @{
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30 */
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31
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32 /** @addtogroup CEC_DataExchangeInterrupt
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33 * @{
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34 */
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35
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36 /* Private typedef -----------------------------------------------------------*/
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37 /* Private define ------------------------------------------------------------*/
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38 /* Private macro -------------------------------------------------------------*/
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39 /* Private variables ---------------------------------------------------------*/
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40 /* Receive buffer */
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41 uint8_t ReceiveBuffer[10];
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42 /* Transmit buffer */
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43 uint8_t TransmitBuffer[10] = {0xDF, 0x12, 0xD3, 0x56, 0x97,
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44 0xA1, 0xEC, 0x7B, 0x4F, 0x22};
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45 __IO uint8_t ReceivedFrame = 0;
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46 uint8_t send_inc = 0, rcv_inc = 0;
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47 uint8_t HeaderBlockValueToSend = 0;
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48 uint8_t InitiatorAddress = 0;
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49 uint8_t TransErrorCode = 0;
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50 uint8_t RecepErrorCode = 0;
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51 extern uint8_t ByteNumber;
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52
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53 /* Private function prototypes -----------------------------------------------*/
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54 /* Private functions ---------------------------------------------------------*/
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55
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56 /******************************************************************************/
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57 /* Cortex-M3 Processor Exceptions Handlers */
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58 /******************************************************************************/
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59
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60 /**
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61 * @brief This function handles NMI exception.
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62 * @param None
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63 * @retval None
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64 */
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65 void NMI_Handler(void)
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66 {
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67 }
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68
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69 /**
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70 * @brief This function handles Hard Fault exception.
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71 * @param None
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72 * @retval None
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73 */
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74 void HardFault_Handler(void)
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75 {
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76 /* Go to infinite loop when Hard Fault exception occurs */
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77 while (1)
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78 {
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79 }
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80 }
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81
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82 /**
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83 * @brief This function handles Memory Manage exception.
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84 * @param None
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85 * @retval None
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86 */
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87 void MemManage_Handler(void)
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88 {
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89 /* Go to infinite loop when Memory Manage exception occurs */
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90 while (1)
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91 {
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92 }
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93 }
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94
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95 /**
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96 * @brief This function handles Bus Fault exception.
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97 * @param None
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98 * @retval None
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99 */
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100 void BusFault_Handler(void)
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101 {
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102 /* Go to infinite loop when Bus Fault exception occurs */
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103 while (1)
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104 {
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105 }
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106 }
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107
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108 /**
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109 * @brief This function handles Usage Fault exception.
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110 * @param None
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111 * @retval None
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112 */
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113 void UsageFault_Handler(void)
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114 {
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115 /* Go to infinite loop when Usage Fault exception occurs */
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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 This function handles SVCall exception.
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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 SVC_Handler(void)
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127 {
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128 }
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129
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130 /**
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131 * @brief This function handles Debug Monitor exception.
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132 * @param None
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133 * @retval None
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134 */
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135 void DebugMon_Handler(void)
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136 {
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137 }
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138
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139 /**
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140 * @brief This function handles PendSVC exception.
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141 * @param None
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142 * @retval None
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143 */
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144 void PendSV_Handler(void)
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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 This function handles SysTick Handler.
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150 * @param None
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151 * @retval None
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152 */
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153 void SysTick_Handler(void)
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154 {
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155 }
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156
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157 /**
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158 * @brief This function handles EXTI Lines 9 to 5 interrupts requests.
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159 * @param None
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160 * @retval None
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161 */
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162 void EXTI9_5_IRQHandler(void)
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163 {
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164 /* Generate rising edge on Key button to detect when we push key button to initiate
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165 transmission */
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166 if(EXTI_GetITStatus(KEY_BUTTON_EXTI_LINE) != RESET)
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167 {
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168 /* Turn on LED3 */
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169 STM_EVAL_LEDOn(LED3);
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170
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171 /* Build the Header block to send */
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172 HeaderBlockValueToSend = (((MY_DEVICE_ADDRESS & 0xF) << 4) | (FOLLOWER & 0xF));
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173
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174 /* Write single Data in the TX Buffer to Transmit through the CEC peripheral */
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175 CEC_SendDataByte(HeaderBlockValueToSend);
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176
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177 /* Initiate Message Transmission */
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178 CEC_StartOfMessage();
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179
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180 /* Clear Key Button EXTI line pending bit */
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181 EXTI_ClearITPendingBit(KEY_BUTTON_EXTI_LINE);
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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 * @brief This function handles CEC global interrupt request.
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187 * @param None
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188 * @retval None
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189 */
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190 void CEC_IRQHandler(void)
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191 {
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192 /* Turn on LED4 */
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193 STM_EVAL_LEDOn(LED4);
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194 /********************** Reception *********************************************/
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195 /* Check if a reception error occurred */
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196 if (CEC_GetFlagStatus(CEC_FLAG_RERR))
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197 {
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198 /* Set receive status bit (Error) */
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199 RecepErrorCode = CEC->ESR;
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200 CEC_ClearFlag(CEC_FLAG_RERR | CEC_FLAG_RSOM | CEC_FLAG_REOM | CEC_FLAG_RBTF);
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201 }
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202 else if (CEC_GetFlagStatus(CEC_FLAG_RBTF))
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203 {
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204 /* Check if the byte received is the last one of the message */
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205 if (CEC_GetFlagStatus(CEC_FLAG_REOM))
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206 {
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207 ReceiveBuffer[rcv_inc] = CEC_ReceiveDataByte();
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208 rcv_inc++;
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209 ReceivedFrame = 1;
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210 }
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211 /* Check if the byte received is a Header */
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212 else if (CEC_GetFlagStatus(CEC_FLAG_RSOM))
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213 {
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214
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215 InitiatorAddress = ((CEC_ReceiveDataByte() >> 4) & 0x0F);
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216 rcv_inc = 0;
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217 }
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218 /* Receive each byte except header in the reception buffer */
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219 else
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220 {
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221 ReceiveBuffer[rcv_inc] = CEC_ReceiveDataByte();
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222 rcv_inc++;
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223 }
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224 /* Clear all reception flags */
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225 CEC_ClearFlag(CEC_FLAG_RSOM | CEC_FLAG_REOM | CEC_FLAG_RBTF);
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226 }
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227
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228 /********************** Transmission ******************************************/
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229 /* Check if a transmission error occurred */
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230 if (CEC_GetFlagStatus(CEC_FLAG_TERR))
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231 {
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232 TransErrorCode = CEC->ESR;
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233 CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_TERR);
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234
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235 }
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236 /* Check if end of message bit is set in the data to be transmitted */
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237 else if (CEC_GetFlagStatus(CEC_FLAG_TEOM))
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238 {
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239 CEC_ClearFlag(CEC_FLAG_TBTRF | CEC_FLAG_RBTF);
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240 CEC_EndOfMessageCmd(DISABLE);
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241 }
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242 /* Check if data byte has been sent */
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243 else if (CEC_GetFlagStatus(CEC_FLAG_TBTRF))
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244 {
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245 /* Set EOM bit if the byte to be transmitted is the last one of the Transmit Buffer */
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246 if (send_inc == (ByteNumber - 1))
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247 {
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248 CEC_SendDataByte(TransmitBuffer[send_inc]);
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249 send_inc++;
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250 CEC_ClearFlag(CEC_FLAG_TBTRF);
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diff changeset
251 CEC_EndOfMessageCmd(ENABLE);
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diff changeset
252 }
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Daniel O'Connor <darius@dons.net.au>
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diff changeset
253 else
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diff changeset
254 {
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diff changeset
255 /* Put the byte in the TX Buffer */
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diff changeset
256 CEC_SendDataByte(TransmitBuffer[send_inc]);
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diff changeset
257 send_inc++;
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258 CEC_ClearFlag(CEC_FLAG_TBTRF);
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diff changeset
259 }
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parents:
diff changeset
260 }
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
261 }
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262
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263 /******************************************************************************/
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diff changeset
264 /* STM32F10x Peripherals Interrupt Handlers */
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265 /* Add here the Interrupt Handler for the used peripheral(s) (PPP), for the */
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diff changeset
266 /* available peripheral interrupt handler's name please refer to the startup */
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267 /* file (startup_stm32f10x_xx.s). */
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268 /******************************************************************************/
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269
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diff changeset
270 /**
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diff changeset
271 * @brief This function handles PPP interrupt request.
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diff changeset
272 * @param None
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diff changeset
273 * @retval None
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diff changeset
274 */
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275 /*void PPP_IRQHandler(void)
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276 {
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diff changeset
277 }*/
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diff changeset
278
c59513fd84fb Initial commit of STM32 test code.
Daniel O'Connor <darius@dons.net.au>
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diff changeset
279 /**
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diff changeset
280 * @}
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diff changeset
281 */
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diff changeset
282
c59513fd84fb Initial commit of STM32 test code.
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
283 /**
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diff changeset
284 * @}
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diff changeset
285 */
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diff changeset
286
c59513fd84fb Initial commit of STM32 test code.
Daniel O'Connor <darius@dons.net.au>
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diff changeset
287 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/