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#include<reg52.h>
#include <intrins.h>
#include "LCD1602.h"
#include "STCEEPROM.h"
sbit RX1 = P3^4;
sbit RX2 = P3^5;
sbit RX3 = P3^6;
sbit TX = P3^7;
sbit LED = P2^1;
sbit SPEAK = P2^0;
sbit KEY1 = P1^3;
sbit KEY2 = P1^4;
sbit KEY3 = P1^5;
unsigned int time=0;
unsigned int timer=0;
unsigned int S=0,S1=0,S2=0,S3=0;
unsigned int SET_H=100,SET_L=10;
bit flag =0;
unsigned char Table[3]={0};
unsigned char KEY_flag=0;
//延時(shí)函數(shù)
void Delay_ms(int jj)
{
int ii;
while(jj--)
for(ii=0;ii<116;ii++);
}
void Conut(void)
{
time=TH0*256+TL0;
TH0=0;
TL0=0;
S=(time*1.87)/100; //算出來(lái)是CM
if((S>=700)||flag==1) //超出測(cè)量范圍顯示“-”
{
flag=0;
}
}
void main(void)
{
LCD1602_init();//液晶初始化
//////////////////////0123456789ABCDEF
LCD1602_Disp_ZF(0x80," : : ",16);
//0123456789ABCDEF
LCD1602_Disp_ZF(0x80+0X40,"Set H: L: ",16);
TMOD=0x11; //設(shè)T0為方式1，GATE=1；
TH0=0;
TL0=0;
TH1=0xf8; //2MS定時(shí)
TL1=0x30;
ET0=1; //允許T0中斷
ET1=1; //允許T1中斷
TR1=1; //開(kāi)啟定時(shí)器
EA=1; //開(kāi)啟總中斷
EA=0;
SET_H = ISP_READ(0x2c00)*256+ISP_READ(0x2c01);
SET_L = ISP_READ(0x2c02)*256+ISP_READ(0x2c03);
EA=1;
while(1)
{
while(!RX1); //當(dāng)RX為零時(shí)等待
TR0=1; //開(kāi)啟計(jì)數(shù)
while(RX1); //當(dāng)RX為1計(jì)數(shù)并等待
TR0=0; //關(guān)閉計(jì)數(shù)
Conut();
S1=S;
Delay_ms(10);
/////////////////////////////
while(!RX2); //當(dāng)RX為零時(shí)等待
TR0=1; //開(kāi)啟計(jì)數(shù)
while(RX2); //當(dāng)RX為1計(jì)數(shù)并等待
TR0=0; //關(guān)閉計(jì)數(shù)
Conut();
S2=S;
Delay_ms(10);
/////////////////////////////
while(!RX3); //當(dāng)RX為零時(shí)等待
TR0=1; //開(kāi)啟計(jì)數(shù)
while(RX3); //當(dāng)RX為1計(jì)數(shù)并等待
TR0=0; //關(guān)閉計(jì)數(shù)
Conut();
S3=S;
Delay_ms(10);
/////////////////////////////////////
Table[0]= S1/100+0X30;
Table[1]= S1%100/10+0X30;
Table[2]= S1%10+0X30;
LCD1602_Disp_ZF(0x80,Table,3);
Table[0]= S2/100+0X30;
Table[1]= S2%100/10+0X30;
Table[2]= S2%10+0X30;
LCD1602_Disp_ZF(0x86,Table,3);
Table[0]= S3/100+0X30;
Table[1]= S3%100/10+0X30;
Table[2]= S3%10+0X30;
LCD1602_Disp_ZF(0x8C,Table,3);
/////////////////////////////////
if((S1>SET_H||S1<SET_L)||(S2>SET_H||S2<SET_L)||(S3>SET_H||S3<SET_L))
P2 = 0X00;
else
P2 = 0XFF;
if(!KEY1)
{
Delay_ms(10);
if(!KEY1)
{
KEY_flag++;
ISP_ERASE(0x2c00); //注意：字節(jié)編程時(shí)必須要先要擦除整個(gè)扇區(qū)
ISP_PROGRAM(0x2c00, SET_H/256);
ISP_PROGRAM(0x2c01, SET_H);
ISP_PROGRAM(0x2c02, SET_L/256);
ISP_PROGRAM(0x2c03, SET_L);
}
while(!KEY1);
}
if(!KEY2)
{
Delay_ms(10);
if(!KEY2)
{
if(KEY_flag%2==0)SET_H++;
if(KEY_flag%2==1)SET_L++;
}
}
if(!KEY3)
{
Delay_ms(10);
if(!KEY3)
{
if(KEY_flag%2==0)SET_H--;
if(KEY_flag%2==1)SET_L--;
}
}
Table[0]= SET_H/100+0X30;
Table[1]= SET_H%100/10+0X30;
Table[2]= SET_H%10+0X30;
LCD1602_Disp_ZF(0x86+0x40,Table,3);
Table[0]= SET_L/100+0X30;
Table[1]= SET_L%100/10+0X30;
Table[2]= SET_L%10+0X30;
LCD1602_Disp_ZF(0x8C+0x40,Table,3);
}
}
/********************************************************/
void zd0() interrupt 1 //T0中斷用來(lái)計(jì)數(shù)器溢出,超過(guò)測(cè)距范圍
{
flag=1; //中斷溢出標(biāo)志
}
/********************************************************/
void zd3() interrupt 3
{
TH1=0xf8;
TL1=0x30;
timer++;
if(timer>=100)
{
timer=0;
TX=1; //200MS 啟動(dòng)一次模塊
_nop_(); _nop_(); _nop_();
_nop_(); _nop_(); _nop_();
_nop_(); _nop_(); _nop_();
_nop_(); _nop_(); _nop_();
_nop_(); _nop_(); _nop_();
_nop_(); _nop_();_nop_();
_nop_(); _nop_(); _nop_();
TX=0;
}
}

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