基于51 超声波测距 避障小车

#include<reg52.h> #include <intrins.h> #define uint unsigned int #define uchar unsigned char sbit trig=P1^2; //超声波测距模块Trig sbit echo=P1^1; //超声波测距模块Echo sbit trig2=P1^3; //超声波测距模块2Trig sbit echo2=P1^4; //超声波测距模块2Echo sbit in1=P2^1; sbit in2=P2^2; sbit in3=P2^3; sbit in4=P2^4; bit flag1; //触发信号标志位// uint M,K,L,S; sfr WDT_CONTR=0xe1; uchar num; uchar count; //中断累加变量 long int distance; //测量所得距离 long int distance2