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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/InputCapture/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 TIM/InputCapture/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
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27 /** @addtogroup STM32F10x_StdPeriph_Examples
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28 * @{
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29 */
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30
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31 /** @addtogroup TIM_Input_Capture
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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 /* Private define ------------------------------------------------------------*/
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37 /* Private macro -------------------------------------------------------------*/
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38 /* Private variables ---------------------------------------------------------*/
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39 __IO uint16_t IC3ReadValue1 = 0, IC3ReadValue2 = 0;
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40 __IO uint16_t CaptureNumber = 0;
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41 __IO uint32_t Capture = 0;
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42 __IO uint32_t TIM3Freq = 0;
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43
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44 /* Private function prototypes -----------------------------------------------*/
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45 /* Private functions ---------------------------------------------------------*/
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46
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47 /******************************************************************************/
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48 /* Cortex-M3 Processor Exceptions Handlers */
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49 /******************************************************************************/
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50
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51 /**
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52 * @brief This function handles NMI exception.
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53 * @param None
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54 * @retval None
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55 */
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56 void NMI_Handler(void)
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57 {
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58 }
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59
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60 /**
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61 * @brief This function handles Hard Fault 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 HardFault_Handler(void)
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66 {
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67 /* Go to infinite loop when Hard Fault exception occurs */
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68 while (1)
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69 {}
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70 }
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71
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72 /**
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73 * @brief This function handles Memory Manage exception.
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74 * @param None
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75 * @retval None
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76 */
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77 void MemManage_Handler(void)
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78 {
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79 /* Go to infinite loop when Memory Manage exception occurs */
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80 while (1)
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81 {}
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82 }
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83
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84 /**
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85 * @brief This function handles Bus Fault exception.
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86 * @param None
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87 * @retval None
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88 */
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89 void BusFault_Handler(void)
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90 {
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91 /* Go to infinite loop when Bus Fault exception occurs */
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92 while (1)
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93 {}
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94 }
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95
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96 /**
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97 * @brief This function handles Usage Fault exception.
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98 * @param None
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99 * @retval None
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100 */
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101 void UsageFault_Handler(void)
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102 {
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103 /* Go to infinite loop when Usage Fault exception occurs */
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104 while (1)
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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 Debug Monitor 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 DebugMon_Handler(void)
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114 {}
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115
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116 /**
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117 * @brief This function handles SVCall exception.
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118 * @param None
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119 * @retval None
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120 */
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121 void SVC_Handler(void)
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122 {}
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123
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124 /**
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125 * @brief This function handles PendSV_Handler exception.
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126 * @param None
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127 * @retval None
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128 */
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129 void PendSV_Handler(void)
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130 {}
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131
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132 /**
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133 * @brief This function handles SysTick Handler.
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134 * @param None
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135 * @retval None
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136 */
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137 void SysTick_Handler(void)
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138 {}
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139
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140 /******************************************************************************/
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141 /* STM32F10x Peripherals Interrupt Handlers */
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142 /******************************************************************************/
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143 /**
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144 * @brief This function handles TIM3 global interrupt request.
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145 * @param None
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146 * @retval None
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147 */
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148 void TIM3_IRQHandler(void)
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149 {
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150 if(TIM_GetITStatus(TIM3, TIM_IT_CC2) == SET)
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151 {
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152 /* Clear TIM3 Capture compare interrupt pending bit */
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153 TIM_ClearITPendingBit(TIM3, TIM_IT_CC2);
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154 if(CaptureNumber == 0)
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155 {
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156 /* Get the Input Capture value */
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157 IC3ReadValue1 = TIM_GetCapture2(TIM3);
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158 CaptureNumber = 1;
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159 }
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160 else if(CaptureNumber == 1)
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161 {
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162 /* Get the Input Capture value */
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163 IC3ReadValue2 = TIM_GetCapture2(TIM3);
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164
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165 /* Capture computation */
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166 if (IC3ReadValue2 > IC3ReadValue1)
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167 {
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168 Capture = (IC3ReadValue2 - IC3ReadValue1);
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169 }
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170 else
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171 {
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172 Capture = ((0xFFFF - IC3ReadValue1) + IC3ReadValue2);
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173 }
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174 /* Frequency computation */
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175 TIM3Freq = (uint32_t) SystemCoreClock / Capture;
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176 CaptureNumber = 0;
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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 /******************************************************************************/
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182 /* STM32F10x Peripherals Interrupt Handlers */
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183 /* Add here the Interrupt Handler for the used peripheral(s) (PPP), for the */
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184 /* available peripheral interrupt handler's name please refer to the startup */
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185 /* file (startup_stm32f10x_xx.s). */
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186 /******************************************************************************/
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187
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188 /**
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189 * @brief This function handles PPP interrupt request.
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190 * @param None
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191 * @retval None
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192 */
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193 /*void PPP_IRQHandler(void)
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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 /**
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202 * @}
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203 */
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204
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205 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/