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#include<reg51.h>
#include<intrins.h>
#include"lcd.h"
sbit Trig = P2^1;
sbit Echo = P2^0;
unsigned char PuZh[]=" Pechin Science ";
unsigned char code ASCII[15] = {'0','1','2','3','4','5','6','7','8','9','.','-','M'};
static unsigned char DisNum = 0; //顯示用指針
unsigned int time=0;
unsigned long S=0;
bit flag =0;
unsigned char disbuff[4] ={ 0,0,0,0,};
void Conut(void)
{
time=TH0*256+TL0;
TH0=0;
TL0=0;
S=(time*1.7)/100; //算出來是CM
if((S>=700)||flag==1) //超出測量范圍顯示“-”
{
flag=0;
DisplayOneChar(0, 1, ASCII[11]);
DisplayOneChar(1, 1, ASCII[10]); //顯示點(diǎn)
DisplayOneChar(2, 1, ASCII[11]);
DisplayOneChar(3, 1, ASCII[11]);
DisplayOneChar(4, 1, ASCII[12]); //顯示M
}
else
{
disbuff[0]=S%1000/100;
disbuff[1]=S%1000%100/10;
disbuff[2]=S%1000%10 %10;
DisplayOneChar(0, 1, ASCII[disbuff[0]]);
DisplayOneChar(1, 1, ASCII[10]); //顯示點(diǎn)
DisplayOneChar(2, 1, ASCII[disbuff[1]]);
DisplayOneChar(3, 1, ASCII[disbuff[2]]);
DisplayOneChar(4, 1, ASCII[12]); //顯示M
}
}
void zd0() interrupt 1 //T0中斷用來計(jì)數(shù)器溢出,超過測距范圍
{
flag=1; //中斷溢出標(biāo)志
}
void StartModule() //啟動模塊
{
Trig=1; //啟動一次模塊
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pro.zip
2019-6-12 22:20 上傳
點(diǎn)擊文件名下載附件
下載積分: 黑幣 -5
2.18 KB, 下載次數(shù): 20, 下載積分: 黑幣 -5
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