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1. 在中断处理程序中,CPU是否处于active mode?
当CPU响应中断,执行中断处理程序时,CPU就处于苏醒模式或则叫激活模式。
2. 我们的应用中采用了RTOS,中断将数据交给任务处理。如何保证中断程序退出后保持active mode?
中断程序最后,可以再执行一条sleep指令,CPU就会再进入sleep状态。如果没有sleep指令,CPU退出后,本身会处于active mode