做了一个按键程序,但是进不了中断,程序如下, 基本配置NVIC_InitStruct.NVIC_IRQChannel = EXTI2_TS_IRQn reemptionPriority = 0; SubPriority = 1;GPIO_Pin_2; GPIO_Mode_IN;GPIO_Speed_50MHz;GPIO_PuPd_UP; SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC, EXTI_PinSource2);EXTI_Line2;EXTI_Mode_Interrupt;EXTI_Trigger_Falling; EXTI_LineCmd = ENABLE;void EXTI2_TS_IRQHandler(void){ if(EXTI_GetITStatus(EXTI_Line2) != RESET) { Delay(2000); if(EXTI_GetITStatus(EXTI_Line2) != RESET) { EXTI_ClearITPendingBit(EXTI_Line2); LEDON; } }这是网友在FAQ栏目中的提问,欢迎大家去FAQ帮助解答:https://www.stmcu.org.cn/faq/index/detail/id-70529 |
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复用时钟没打开吧,代码里没看到