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超声波51程序

于 2022-02-21 发布 文件大小:2.18 kB
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代码说明:

51的超声波程序,改一下IO口就能用,超声波模块是HC-SR04,控制口发一个10US 以上的高电平,就可以在接收口等待高电平输出. 一有输出就可以开定时器计时,当此口变为低电平时就可以读定时器的值,此时就为此次测 距的时间,方可算出距离.如此不断的周期测,就可以达到你移动测量的值了。

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