52单片机驱动HC-SR04模块程序 -

标题: 52单片机驱动HC-SR04模块程序 [打印本页]

作者: zero1000 时间: 2018-10-14 12:48
标题: 52单片机驱动HC-SR04模块程序
#include<reg52.h>
#include <intrins.h>
#define uint unsigned int
#define uchar unsigned char
sbit rs=P3^5;          //1602??????/???????????
sbit rw=P3^6;          //1602???д??????
sbit en=P3^4;       //1602??????????
sbit trig=P2^5;    //????????????Trig
sbit echo=P3^2;    //????????????Echo
bit flag1;       //?????????λ//
uchar count;          //?ж???????
long int distance; //???????t???
unsigned char code table[ ]={"0123456789"}; //??????????????????
/*------------------------------------------------
               ???????
------------------------------------------------*/
void delay(uint n)
{
uint x,y;
for(x=n;x>0;x--)
for(y=110;y>0;y--);
}

/*------------------------------------------------
               ???????
------------------------------------------------*/
void delayt(uint x)
{
uchar j;
while(x-- > 0)
{

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