怎么无法发生外部中断

cl17726

我按照GPIO初始化,EXIT,然后NVIC,中断服务程序也写了.

[mw_shl_code=c,true]void EXTI0_1_IRQHandler(void) { if(EXTI_GetFlagStatus(EXTI_Line0) == SET) { GPIO_SetBits(GPIOB, GPIO_Pin_1); EXTI_ClearITPendingBit(EXTI_Line0); } } [/mw_shl_code]

然后还是不行,内部上拉,外部上拉也试过.

[mw_shl_code=c,true]#include "stm32f0xx.h" void EXIT_Test() { GPIO_InitTypeDef GPIO_InitStructure; EXTI_InitTypeDef EXTI_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); //PA0 作为外部中断引脚 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE); //PB1 作为指示引脚 RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);//外部中断时钟 //PB1 引脚 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(GPIOB, &GPIO_InitStructure); //PA0 引脚 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; GPIO_Init(GPIOA, &GPIO_InitStructure); //配置中断关联 SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, EXTI_PinSource0); //配置中断 EXTI_InitStructure.EXTI_Line = EXTI_Line0; 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 = EXTI0_1_IRQn; //这个在stm32f0xx.h里面找定义. NVIC_InitStructure.NVIC_IRQChannelPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } int main(void) { for(;;) { } } [/mw_shl_code]

这是最小实现代码,谁知道怎么破啊.

STM32VBT6

中断函数名都错了。line0单独一个通道。
==，你这不是f10系列。不知道名字错没。

STM32VBT6

蛋疼，你主函数都没调用EXIT_Test()函数，什么内容都没有。。。
别以为写在前面就可以不用调了，只是不用声明而已。