2019-12-14

51单片机超声波HC-SR04测距程序 List item #include “reg52.h” typedef unsigned char u8; typedef unsigned int u16; sbit Echo=P3^2;//回波 sbit Trig=P1^1;//回波使能 sbit led=P1^0;//测试led sbit LSA=P2^2; sbit LSB=P2^3; //138

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