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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/EXTI/EXTI_Config/main.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 EXTI/EXTI_Config/main.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 program body
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8 ******************************************************************************
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9 * @attention
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10 *
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11 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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12 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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13 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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14 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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15 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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16 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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17 *
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18 * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
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19 ******************************************************************************
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20 */
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21
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22 /* Includes ------------------------------------------------------------------*/
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23 #include "stm32f10x.h"
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24 #include "stm32_eval.h"
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25
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26 /** @addtogroup STM32F10x_StdPeriph_Examples
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27 * @{
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28 */
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29
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30 /** @addtogroup EXTI_Config
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31 * @{
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32 */
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33
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34 /* Private typedef -----------------------------------------------------------*/
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35 /* Private define ------------------------------------------------------------*/
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36 /* Private macro -------------------------------------------------------------*/
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37 /* Private variables ---------------------------------------------------------*/
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38 EXTI_InitTypeDef EXTI_InitStructure;
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39 GPIO_InitTypeDef GPIO_InitStructure;
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40 NVIC_InitTypeDef NVIC_InitStructure;
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41
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42 /* Private function prototypes -----------------------------------------------*/
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43 void EXTI0_Config(void);
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44 void EXTI9_5_Config(void);
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45
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46 /* Private functions ---------------------------------------------------------*/
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47
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48 /**
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49 * @brief Main program.
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50 * @param None
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51 * @retval None
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52 */
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53 int main(void)
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54 {
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55 /*!< At this stage the microcontroller clock setting is already configured,
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56 this is done through SystemInit() function which is called from startup
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57 file (startup_stm32f10x_xx.s) before to branch to application main.
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58 To reconfigure the default setting of SystemInit() function, refer to
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59 system_stm32f10x.c file
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60 */
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61
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62 /* Initialize LED1 and Key Button mounted on STM3210X-EVAL board */
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63 STM_EVAL_LEDInit(LED1);
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64 STM_EVAL_LEDInit(LED2);
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65
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66 /* Configure PA.00 in interrupt mode */
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67 EXTI0_Config();
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68
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69 /* Configure PB.09 or PG.08 in interrupt mode */
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70 EXTI9_5_Config();
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71
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72 /* Generate software interrupt: simulate a falling edge applied on EXTI0 line */
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73 EXTI_GenerateSWInterrupt(EXTI_Line0);
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74
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75 while (1)
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76 {
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77 }
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78 }
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79
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80 /**
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81 * @brief Configure PA.00 in interrupt mode
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82 * @param None
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83 * @retval None
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84 */
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85 void EXTI0_Config(void)
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86 {
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87 /* Enable GPIOA clock */
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88 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
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89
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90 /* Configure PA.00 pin as input floating */
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91 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
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92 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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93 GPIO_Init(GPIOA, &GPIO_InitStructure);
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94
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95 /* Enable AFIO clock */
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96 RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
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97
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98 /* Connect EXTI0 Line to PA.00 pin */
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99 GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);
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100
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101 /* Configure EXTI0 line */
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102 EXTI_InitStructure.EXTI_Line = EXTI_Line0;
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103 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
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104 EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
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105 EXTI_InitStructure.EXTI_LineCmd = ENABLE;
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106 EXTI_Init(&EXTI_InitStructure);
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107
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108 /* Enable and set EXTI0 Interrupt to the lowest priority */
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109 NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
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110 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
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111 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
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112 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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113 NVIC_Init(&NVIC_InitStructure);
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114 }
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115
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116 /**
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117 * @brief Configure PB.09 or PG.08 in interrupt mode
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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 EXTI9_5_Config(void)
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122 {
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123 #if defined (STM32F10X_HD_VL) || defined (STM32F10X_HD) || defined (STM32F10X_XL)
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124 /* Enable GPIOG clock */
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125 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOG, ENABLE);
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126
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127 /* Configure PG.08 pin as input floating */
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128 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
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129 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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130 GPIO_Init(GPIOG, &GPIO_InitStructure);
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131
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132 /* Enable AFIO clock */
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133 RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
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134 /* Connect EXTI8 Line to PG.08 pin */
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135 GPIO_EXTILineConfig(GPIO_PortSourceGPIOG, GPIO_PinSource8);
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136
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137 /* Configure EXTI8 line */
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138 EXTI_InitStructure.EXTI_Line = EXTI_Line8;
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139 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
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140 EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
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141 EXTI_InitStructure.EXTI_LineCmd = ENABLE;
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142 EXTI_Init(&EXTI_InitStructure);
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143
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144 /* Enable and set EXTI9_5 Interrupt to the lowest priority */
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145 NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
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146 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
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147 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
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148 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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149
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150 NVIC_Init(&NVIC_InitStructure);
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151 #else
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152 /* Enable GPIOB clock */
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153 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
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154
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155 /* Configure PB.09 pin as input floating */
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156 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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157 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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158 GPIO_Init(GPIOB, &GPIO_InitStructure);
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159
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160 /* Enable AFIO clock */
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161 RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
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162 /* Connect EXTI9 Line to PB.09 pin */
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163 GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource9);
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164
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165 /* Configure EXTI9 line */
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166 EXTI_InitStructure.EXTI_Line = EXTI_Line9;
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167 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
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168 EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
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169 EXTI_InitStructure.EXTI_LineCmd = ENABLE;
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170 EXTI_Init(&EXTI_InitStructure);
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171
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172 /* Enable and set EXTI9_5 Interrupt to the lowest priority */
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173 NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;
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174 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
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175 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
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176 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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177
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178 NVIC_Init(&NVIC_InitStructure);
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179 #endif
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180 }
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181
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182 #ifdef USE_FULL_ASSERT
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183
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184 /**
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185 * @brief Reports the name of the source file and the source line number
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186 * where the assert_param error has occurred.
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187 * @param file: pointer to the source file name
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188 * @param line: assert_param error line source number
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189 * @retval None
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190 */
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191 void assert_failed(uint8_t* file, uint32_t line)
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192 {
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193 /* User can add his own implementation to report the file name and line number,
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194 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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195
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196 /* Infinite loop */
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197 while (1)
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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 #endif
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203
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204 /**
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205 * @}
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206 */
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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
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212 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/