想用EXTI检测上升沿做触发信号,能够检测信号的最大频率为多少,是否就是I/O口的50MHz
如果想暂时关闭EXTI的中断,类似于 DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, DISABLE)这样怎样做, 如此是否可行? NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQChannel; NVIC_InitStructure.NVIC_IRQChannelCmd = DISABLE; NVIC_Init(&NVIC_InitStructure); |