MiniSTM32F103外部中断

洁霸霸

MiniSTM32F103外部中断实验中烧录程序后为什么key1键无法使用
void EXTIX_Init(void)
{
EXTI_InitTypeDef EXTI_InitStruct;
NVIC_InitTypeDef NVIC_InitStruct;

  KEY_Init();//初始化按键对应io口模式
RCC_APB2PeriphClockCmd( RCC_APB2Periph_AFIO, ENABLE);

// WKUP PA0
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource0);

EXTI_InitStruct.EXTI_Line=EXTI_Line0;
EXTI_InitStruct.EXTI_LineCmd=ENABLE;
EXTI_InitStruct.EXTI_Mode=EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_Trigger=EXTI_Trigger_Rising;
EXTI_Init(&EXTI_InitStruct);//初始化线上中断，设置触发提条件

NVIC_InitStruct.NVIC_IRQChannel=EXTI0_IRQn;
NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority=2;
NVIC_InitStruct.NVIC_IRQChannelSubPriority=3;
NVIC_Init(&NVIC_InitStruct);
// KEY0 PC5
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC,GPIO_PinSource5);

EXTI_InitStruct.EXTI_Line=EXTI_Line5;
EXTI_InitStruct.EXTI_LineCmd=ENABLE;
EXTI_InitStruct.EXTI_Mode=EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_Trigger=EXTI_Trigger_Falling;
EXTI_Init(&EXTI_InitStruct);//初始化线上中断，设置触发提条件

NVIC_InitStruct.NVIC_IRQChannel=EXTI9_5_IRQn;
NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority=2;
NVIC_InitStruct.NVIC_IRQChannelSubPriority=1;
NVIC_Init(&NVIC_InitStruct);
// KEY1 PA15
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource15);

EXTI_InitStruct.EXTI_Line=EXTI_Line15;
EXTI_InitStruct.EXTI_LineCmd=ENABLE;
EXTI_InitStruct.EXTI_Mode=EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_Trigger=EXTI_Trigger_Falling;
EXTI_Init(&EXTI_InitStruct);//初始化线上中断，设置触发提条件

NVIC_InitStruct.NVIC_IRQChannel=EXTI15_10_IRQn;
NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority=2;
NVIC_InitStruct.NVIC_IRQChannelSubPriority=1;
NVIC_Init(&NVIC_InitStruct);
}
void EXTI0_IRQHandler(void)//WKUP
{
  delay_ms(10);
if(WK_UP==1)
{
   LED0=~LED0;
   LED1=~LED1;
  
}
EXTI_ClearITPendingBit(EXTI_Line0);

}
void EXTI9_5_IRQHandler(void)//KEY0
{
  delay_ms(10);
if(KEY0==0)
{
   LED0=~LED0;
  
}
EXTI_ClearITPendingBit(EXTI_Line5);

}
void EXTI15_10_IRQHandler(void)//KEY1
{
  delay_ms(10);
if(KEY1==0)
{
   LED1=!LED1;
  
}
EXTI_ClearITPendingBit(EXTI_Line15);

}
求解！！烧录资料中的代码也不成功救命！

正点原子

你是不是外部接了什么设备哦？ KEY1所占的IO被你占了？