STM32外部中斷無法觸發(fā)

ID:500189 · 發(fā)表于 2019-9-1 10:59

以下是我外部中斷的函數(shù) 我就想問為什么外部中斷無法觸發(fā)呢我直接都把引腳接3.3V了還是無法觸發(fā) 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(fā)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(biāo)志位
}
//外部中斷2服務(wù)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(biāo)志位
}
//外部中斷3服務(wù)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(biāo)志位
}
//外部中斷4服務(wù)程序
void EXTI4_IRQHandler(void)
{
delay_ms(10); //消抖
EXTI_ClearITPendingBit(EXTI_Line4);//清除LINE4上的中斷標(biāo)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(yīng)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(fā)
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(fā)
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(yōu)先級0
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;//子優(yōu)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(yōu)先級0
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;//子優(yōu)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(yōu)先1
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;//子優(yōu)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(yōu)先級1
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;//子優(yōu)先級2
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能外部中斷通道
NVIC_Init(&NVIC_InitStructure);//配置
}