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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/IWDG/IWDG_Reset/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 IWDG/IWDG_Reset/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 peripherals
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9 * 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 IWDG_Reset
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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 extern __IO uint32_t TimingDelay;
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41 __IO uint16_t IC1ReadValue1 = 0, IC1ReadValue2 = 0;
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42 __IO uint16_t CaptureNumber = 0;
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43 __IO uint32_t Capture = 0;
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44 extern uint32_t LsiFreq;
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45
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46 /* Private function prototypes -----------------------------------------------*/
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47 /* Private functions ---------------------------------------------------------*/
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48
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49 /******************************************************************************/
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50 /* Cortex-M3 Processor Exceptions Handlers */
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51 /******************************************************************************/
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52
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53 /**
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54 * @brief This function handles NMI exception.
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55 * @param None
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56 * @retval None
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57 */
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58 void NMI_Handler(void)
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59 {
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60 }
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61
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62 /**
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63 * @brief This function handles Hard Fault exception.
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64 * @param None
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65 * @retval None
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66 */
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67 void HardFault_Handler(void)
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68 {
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69 /* Go to infinite loop when Hard Fault exception occurs */
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70 while (1)
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71 {}
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72 }
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73
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74 /**
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75 * @brief This function handles Memory Manage exception.
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76 * @param None
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77 * @retval None
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78 */
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79 void MemManage_Handler(void)
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80 {
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81 /* Go to infinite loop when Memory Manage exception occurs */
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82 while (1)
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83 {}
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84 }
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85
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86 /**
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87 * @brief This function handles Bus Fault exception.
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88 * @param None
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89 * @retval None
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90 */
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91 void BusFault_Handler(void)
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92 {
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93 /* Go to infinite loop when Bus Fault exception occurs */
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94 while (1)
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95 {}
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96 }
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97
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98 /**
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99 * @brief This function handles Usage Fault exception.
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100 * @param None
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101 * @retval None
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102 */
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103 void UsageFault_Handler(void)
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104 {
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105 /* Go to infinite loop when Usage Fault exception occurs */
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106 while (1)
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107 {}
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108 }
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109
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110 /**
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111 * @brief This function handles Debug Monitor exception.
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112 * @param None
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113 * @retval None
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114 */
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115 void DebugMon_Handler(void)
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116 {
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117 }
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118
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119 /**
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120 * @brief This function handles SVCall exception.
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121 * @param None
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122 * @retval None
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123 */
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124 void SVC_Handler(void)
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125 {
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126 }
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127
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128 /**
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129 * @brief This function handles PendSV_Handler exception.
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130 * @param None
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131 * @retval None
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132 */
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133 void PendSV_Handler(void)
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134 {
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135 }
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136
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137 /**
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138 * @brief This function handles SysTick Handler.
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139 * @param None
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140 * @retval None
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141 */
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142 void SysTick_Handler(void)
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143 {
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144 TimingDelay--;
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145 }
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146
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147 /******************************************************************************/
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148 /* STM32F10x Peripherals Interrupt Handlers */
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149 /******************************************************************************/
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150
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151 /**
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152 * @brief This function handles External lines 9 to 5 interrupt request.
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153 * @param None
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154 * @retval None
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155 */
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156 void EXTI9_5_IRQHandler(void)
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157 {
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158 if (EXTI_GetITStatus(KEY_BUTTON_EXTI_LINE) != RESET)
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159 {
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160 /* Clear the Key Button EXTI Line Pending Bit */
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161 EXTI_ClearITPendingBit(KEY_BUTTON_EXTI_LINE);
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162
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163 /* As the following address is invalid (not mapped), a Hardfault exception
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164 will be generated with an infinite loop and when the IWDG counter reaches 0
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165 the IWDG reset occurs */
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166 *(__IO uint32_t *) 0x000000FF = 0xFF;
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167 }
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168 }
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169
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170 /**
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171 * @brief This function handles TIM5 global interrupt request.
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172 * @param None
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173 * @retval None
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174 */
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175 void TIM5_IRQHandler(void)
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176 {
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177 if (TIM_GetITStatus(TIM5, TIM_IT_CC4) != RESET)
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178 {
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179 if(CaptureNumber == 0)
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180 {
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181 /* Get the Input Capture value */
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182 IC1ReadValue1 = TIM_GetCapture4(TIM5);
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183 }
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184 else if(CaptureNumber == 1)
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185 {
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186 /* Get the Input Capture value */
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187 IC1ReadValue2 = TIM_GetCapture4(TIM5);
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188
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189 /* Capture computation */
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190 if (IC1ReadValue2 > IC1ReadValue1)
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191 {
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192 Capture = (IC1ReadValue2 - IC1ReadValue1);
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193 }
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194 else
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195 {
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196 Capture = ((0xFFFF - IC1ReadValue1) + IC1ReadValue2);
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197 }
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198 /* Frequency computation */
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199 LsiFreq = (uint32_t) SystemCoreClock / Capture;
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200 LsiFreq *= 8;
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201 }
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202
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203 CaptureNumber++;
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204
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205 /* Clear TIM5 Capture compare interrupt pending bit */
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206 TIM_ClearITPendingBit(TIM5, TIM_IT_CC4);
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207 }
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208 }
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209
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210 /******************************************************************************/
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211 /* STM32F10x Peripherals Interrupt Handlers */
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212 /* Add here the Interrupt Handler for the used peripheral(s) (PPP), for the */
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213 /* available peripheral interrupt handler's name please refer to the startup */
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214 /* file (startup_stm32f10x_xx.s). */
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215 /******************************************************************************/
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216
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217 /**
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218 * @brief This function handles PPP interrupt request.
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219 * @param None
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220 * @retval None
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221 */
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222 /*void PPP_IRQHandler(void)
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223 {
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224 }*/
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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 /**
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230 * @}
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231 */
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232
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233 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/