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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/InputCapture/stm32f10x_it.c @ 0:c59513fd84fb
Initial commit of STM32 test code.
author | Daniel O'Connor <darius@dons.net.au> |
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date | Mon, 03 Oct 2011 21:19:15 +1030 |
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c59513fd84fb
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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>© 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****/ |