[mw_shl_code=c,true]void EXTIX_Init(void) { NVIC_InitTypeDef NVIC_InitStructure; EXTI_InitTypeDef EXTI_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);// RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB,ENABLE); /* Configure the GPIO pin */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; // GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure); SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, EXTI_PinSource14);//PB14 EXTI_DeInit(); EXTI_InitStructure.EXTI_Line = EXTI_Line14; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; //????????·? EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x03; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } void EXTI15_10_IRQHandler(void) { if(EXTI_GetITStatus(EXTI_Line14)!=RESET) { TIM_Cmd(TIM2, ENABLE); EXTI_ClearITPendingBit(EXTI_Line14); } } [/mw_shl_code] 主函数执行上面的init，我把PB14脚飞线，分别短接3.3V 和 接地，在线调试发现没有进中断，什么情况