32中断控制按键点亮LED

//设置PB11为下降沿触发，初始化中断模式
GPIO_InitTypeDef GPIO_InitStructure;

EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

//配置管脚时钟和复用时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO,ENABLE);


//配置GPIO口为上拉输入

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_10;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOB, &GPIO_InitStructure);

//配置GPIO口为外部中断模式
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource11);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource10);

//配置EXTI的中断模式
EXTI_InitStructure.EXTI_Line = EXTI_Line11;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);

EXTI_InitStructure.EXTI_Line = EXTI_Line10;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);

NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

//主函数

int main(void)
{
        NVIC_Configuration();
        Led_Init();
        EXTI_key_Init();

    while(1)
    {



    }
}

//中断函数
void EXTI15_10_IRQHandler(void)
{
    if(EXTI_GetFlagStatus(EXTI_Line10) == 1)
    {
        LED = 0;
        EXTI_ClearFlag(EXTI_Line10);
    }
    if(EXTI_GetFlagStatus(EXTI_Line11) == 1)
    {
        LED = 1;
        EXTI_ClearFlag(EXTI_Line11);
    }
}
效果图：