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21ic
7 年
C51中断中的使用 中断优先级 interrupt 和 using
单 片机中断响应可以分为以下几个步骤:1、停止主程序运行。当前指令执行完后立即终止现行程序的运行。2、保护断点。把程序计数器PC 的当前值压入堆栈,保存终止的地址(即断点地址),以便从中断服务程序返回时能继续执行该程序,3、寻找中断入口。
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