stm32 迷你版外部中断问题

nelg · 发表于 2015-6-4 15:48:53

[mw_shl_code=c,true]#include "stm32f10x.h" #include "stm32f10x_exti.h" #include "misc.h" void setclock(void); void setio(void); void setterrupt(void); void NVIC_Configuration(void); int main(void) { setio(); setterrupt(); setclock(); NVIC_Configuration(); while(1); } void setclock(void) //?????±?? { SystemInit(); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); } void setio(void) //????IO?? { GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Pin=GPIO_Pin_8; GPIO_InitStructure.GPIO_Speed=GPIO_Speed_10MHz; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP; GPIO_Init(GPIOA,&GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin=GPIO_Pin_5; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IPU; GPIO_Init(GPIOC,&GPIO_InitStructure); } void setterrupt(void) //???????? { EXTI_InitTypeDef EXTI_InitStructure; EXTI_ClearITPendingBit(EXTI_Line5); GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource5); EXTI_InitStructure.EXTI_Line = EXTI_Line5; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); } void NVIC_Configuration(void) //?????????è?? { NVIC_InitTypeDef NVIC_InitStructure; NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } void EXTI9_5_IRQHandler(void) //???????ò { if(EXTI_GetITStatus(EXTI_Line5)==1) { EXTI_ClearITPendingBit(EXTI_Line5); if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_8)==1) { GPIO_ResetBits(GPIOA,GPIO_Pin_8); } else { GPIO_SetBits(GPIOA,GPIO_Pin_8); } } } [/mw_shl_code]

为什么中断不能正常工作？还是我其他文件的设置有问题？附件是整个外部中断的工程，大神帮帮我吧