STM32外部中斷無法觸發

ID:500189 · 發表于 2019-9-1 10:59

以下是我外部中斷的函數我就想問為什么外部中斷無法觸發呢我直接都把引腳接3.3V了還是無法觸發我IO口PDin4和5配置的都是下拉 PBin12和13配置的是上拉。請問為什么觸發不成功啊。。求教求教
void EXTI0_IRQHandler(void)
{
delay_ms(10); //消抖
if(PDin(4)==1)
{
left();
}
EXTI_ClearITPendingBit(EXTI_Line0); //清除LINE0上的中斷標志位
}
//外部中斷2服務程序
void EXTI2_IRQHandler(void)
{
delay_ms(10); //消抖
if(PDin(5)==1)
{
right();
}
EXTI_ClearITPendingBit(EXTI_Line2);//清除LINE2上的中斷標志位
}
//外部中斷3服務程序
void EXTI3_IRQHandler(void)
{
delay_ms(10); //消抖
if(PBin(12)==0)
{
stop();
chuansongdai_work(1);
if(PBin(13)==0)
{
chuansongdai_work(3); //傳送帶停
}
}
EXTI_ClearITPendingBit(EXTI_Line3); //清除LINE3上的中斷標志位
}
//外部中斷4服務程序
void EXTI4_IRQHandler(void)
{
delay_ms(10); //消抖
EXTI_ClearITPendingBit(EXTI_Line4);//清除LINE4上的中斷標志位
}
//外部中斷初始化程序
//初始化PE2~4,PA0為中斷輸入.
void EXTIX_Init(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
//KEY_Init(); //按鍵對應的IO口初始化
hongwai_init();
huidu_init();
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);//使能SYSCFG時鐘
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, EXTI_PinSource12);//PE2 連接到中斷線2
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, EXTI_PinSource13);//PE3 連接到中斷線3
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOD, EXTI_PinSource5);//PE4 連接到中斷線4
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOD, EXTI_PinSource4);//PA0 連接到中斷線0
/* 配置EXTI_Line0 */
EXTI_InitStructure.EXTI_Line = EXTI_Line0 | EXTI_Line4;//LINE0
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;//中斷事件
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; //上升沿觸發
EXTI_InitStructure.EXTI_LineCmd = ENABLE;//使能LINE0
EXTI_Init(&EXTI_InitStructure);//配置
/* 配置EXTI_Line2,3,4 */
EXTI_InitStructure.EXTI_Line = EXTI_Line2 | EXTI_Line3;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;//中斷事件
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; //下降沿觸發
EXTI_InitStructure.EXTI_LineCmd = ENABLE;//中斷線使能
EXTI_Init(&EXTI_InitStructure);//配置
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;//外部中斷0
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00;//搶占優先級0
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;//子優先級2
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能外部中斷通道
NVIC_Init(&NVIC_InitStructure);//配置
NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn;//外部中斷2
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;//搶占優先級0
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;//子優先級2
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能外部中斷通道
NVIC_Init(&NVIC_InitStructure);//配置
NVIC_InitStructure.NVIC_IRQChannel = EXTI3_IRQn;//外部中斷3
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01;//搶占優先1
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;//子優先級2
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能外部中斷通道
NVIC_Init(&NVIC_InitStructure);//配置
NVIC_InitStructure.NVIC_IRQChannel = EXTI4_IRQn;//外部中斷4
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01;//搶占優先級1
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;//子優先級2
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能外部中斷通道
NVIC_Init(&NVIC_InitStructure);//配置
}