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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/NVIC/IRQ_Priority/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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1 /** |
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2 ****************************************************************************** |
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3 * @file NVIC/IRQ_Priority/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>© 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 IRQ_Priority |
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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 uint8_t PreemptionOccured; |
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41 extern uint8_t PreemptionPriorityValue; |
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42 |
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43 /* Private function prototypes -----------------------------------------------*/ |
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44 /* Private functions ---------------------------------------------------------*/ |
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45 |
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46 /******************************************************************************/ |
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47 /* Cortex-M3 Processor Exceptions Handlers */ |
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48 /******************************************************************************/ |
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49 |
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50 /** |
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51 * @brief This function handles NMI exception. |
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52 * @param None |
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53 * @retval None |
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54 */ |
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55 void NMI_Handler(void) |
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56 { |
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57 } |
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58 |
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59 /** |
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60 * @brief This function handles Hard Fault exception. |
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61 * @param None |
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62 * @retval None |
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63 */ |
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64 void HardFault_Handler(void) |
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65 { |
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66 /* Go to infinite loop when Hard Fault exception occurs */ |
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67 while (1) |
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68 { |
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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 /** |
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86 * @brief This function handles Bus Fault exception. |
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87 * @param None |
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88 * @retval None |
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89 */ |
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90 void BusFault_Handler(void) |
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91 { |
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92 /* Go to infinite loop when Bus Fault exception occurs */ |
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93 while (1) |
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94 { |
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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 /** |
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112 * @brief This function handles SVCall exception. |
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113 * @param None |
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114 * @retval None |
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115 */ |
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116 void SVC_Handler(void) |
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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 * @brief This function handles Debug Monitor exception. |
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122 * @param None |
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123 * @retval None |
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124 */ |
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125 void DebugMon_Handler(void) |
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126 { |
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127 } |
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128 |
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129 /** |
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130 * @brief This function handles PendSV_Handler exception. |
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131 * @param None |
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132 * @retval None |
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133 */ |
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134 void PendSV_Handler(void) |
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135 { |
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136 } |
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137 |
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138 /** |
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139 * @brief This function handles SysTick Handler. |
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140 * @param None |
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141 * @retval None |
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142 */ |
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143 void SysTick_Handler(void) |
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144 { |
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145 /* If the EXTI0 IRQ Handler was preempted by SysTick Handler */ |
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146 if(NVIC_GetActive(WAKEUP_BUTTON_EXTI_IRQn) != 0) |
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147 { |
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148 PreemptionOccured = 1; |
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149 } |
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150 } |
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151 |
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152 /******************************************************************************/ |
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153 /* STM32F10x Peripherals Interrupt Handlers */ |
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154 /******************************************************************************/ |
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155 |
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156 /** |
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157 * @brief This function handles External interrupt Line 0 request. |
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158 * @param None |
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159 * @retval None |
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160 */ |
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161 void EXTI0_IRQHandler(void) |
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162 { |
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163 /* Generate SysTick exception */ |
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164 SCB->ICSR |= 0x04000000; |
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165 |
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166 /* Clear WAKEUP_BUTTON_EXTI_LINE pending bit */ |
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167 EXTI_ClearITPendingBit(WAKEUP_BUTTON_EXTI_LINE); |
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168 } |
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169 |
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170 /** |
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171 * @brief This function handles External lines 9 to 5 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 EXTI9_5_IRQHandler(void) |
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176 { |
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177 NVIC_InitTypeDef NVIC_InitStructure; |
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178 |
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179 if(EXTI_GetITStatus(KEY_BUTTON_EXTI_LINE) != RESET) |
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180 { |
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181 PreemptionPriorityValue = !PreemptionPriorityValue; |
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182 PreemptionOccured = 0; |
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183 |
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184 /* Modify the WAKEUP_BUTTON_EXTI_IRQn Interrupt Preemption Priority */ |
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185 NVIC_InitStructure.NVIC_IRQChannel = WAKEUP_BUTTON_EXTI_IRQn; |
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186 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = PreemptionPriorityValue; |
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187 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; |
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188 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; |
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189 NVIC_Init(&NVIC_InitStructure); |
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190 |
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191 /* Configure the SysTick Handler Priority: Preemption priority and subpriority */ |
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192 NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(), !PreemptionPriorityValue, 0)); |
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193 |
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194 /* Clear KEY_BUTTON_EXTI_LINE pending bit */ |
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195 EXTI_ClearITPendingBit(KEY_BUTTON_EXTI_LINE); |
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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 /* STM32F10x Peripherals Interrupt Handlers */ |
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201 /* Add here the Interrupt Handler for the used peripheral(s) (PPP), for the */ |
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202 /* available peripheral interrupt handler's name please refer to the startup */ |
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203 /* file (startup_stm32f10x_xx.s). */ |
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204 /******************************************************************************/ |
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205 |
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206 /** |
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207 * @brief This function handles PPP interrupt request. |
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208 * @param None |
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209 * @retval None |
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210 */ |
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211 /*void PPP_IRQHandler(void) |
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212 { |
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213 }*/ |
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214 |
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215 /** |
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216 * @} |
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217 */ |
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218 |
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219 /** |
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220 * @} |
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221 */ |
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222 |
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223 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |