那个中断已经被触发了,你要做的只有是清中断标志位:
EXTI_ClearITPendingBit(EXTI_Line14);
EXTI_ClearFlag(EXTI_Line14);
非要关的话,我觉得这样就关了
EXTI_InitStructure.EXTI_Line = EXTI_Line14;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = DISABLE; //ENABLE
EXTI_Init(&EXTI_InitStructure);
注意外部中断信号的响应速度,最好在退出时清中断,以免重复响应