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PM2模式和PM3模式唤醒事件的疑问

如题

1.PM2模式可以被定时器和外部中断唤醒,PM3模式只能被外部中断唤醒。请问这句话把唤醒事件都描述全了吗?

2.上一条中的外部中断具体指的是那种类型的中断。GPIO口硬中断?还是所有的中断源,这个时候DMA串口收到数据能不能唤醒?