w.zip_12864LCD_51单片机_超声波_Ｃ５１

#include<reg52.h> #include<intrins.h> #include <stdio.h> #define uchar unsigned char #define unit unsigned int sbit RS=P3^4; //3.4 sbit RW=P3^3; //3.3 sbit E=P3^2; //3.2 //sbit RS=P1^2; //3.4 //sbit RW=P1^1; //3.3 //sbit E=P1^0; //3.2 sbit trig1 = P2^3; sbit echo1 = P2^2; sbit trig2 = P2^1; sbit echo2 = P2^0; float dis = 0; unit dist,t1,t2; int t3=10; uchar a1[]="声源定位系统"; uchar a2[]="X:"; uchar a3[]="Y:"; uchar a4[]="坐标:"; uchar s2[8]; uchar s3[8]; uchar s4[8]; uchar upset(uchar dat) //用12345678代表dat的各个位 { dat=(dat>>4)|(dat<<4); //dat变成56781234 dat=((dat&0xcc)>>2)|((dat&0x33)<<2);//dat=78563412 dat=((dat&0xaa)>>1)|((dat&0x55)<<1);//dat=87654321 return dat; } uchar RollBack(uchar n) { int i,buf; for(i=0;i<8;i++) { buf=(n<<i)&0x80; buf>>=(8-i); } return buf; } void delay(int t) { int i,j; for(i=0;i<t;i++) for(j=0;j<114;j++); } void wcmd(uchar cmd) //写命令 { cmd=upset(cmd); RS=0; RW=0; E=0; _nop_(); P1=cmd; delay(5); E=1; delay(5); E=0; } void wdate(uchar date) //写数据 { date=upset(date); RS=1; RW=0; E=0; P1=date; delay(5); E=1; delay(5); E=0; } void wplace(uchar x,uchar y) //设定显示位置 { uchar place; if(x==0) x=0x80; if(x==1) x=0x90; if(x==2) x=0x88; if(x==3) x=0x98; place=x+y; wcmd(place); } void lcd_init() //初始化 { wcmd(0x30); delay(5); wcmd(0x0C); delay(5); wcmd(0x01); delay(5); wcmd(0x06); delay(5); } void dat_init() //显示标题和大、中、小、三个字 { int i; wplace(0,1); i=0 ; while(a1[i]!='\0') { wdate(a1[i]); i++; } wplace(1,0); i=0 ; while(a2[i]!='\0') { wdate(a2[i]); i++; } wplace(2,0); i=0 ; while(a3[i]!='\0') { wdate(a3[i]); i++; } wplace(3,0); i=0 ; while(a4[i]!='\0') { wdate(a4[i]); i++; } } void Data() { int i; wplace(1,4); i=0 ; while(s2[i]!='\0') { wdate(s2[i]); i++; } wplace(2,4); i=0 ; while(s3[i]!='\0') { wdate(s3[i]); i++; } wplace(3,4); i=0 ; // while(s4[i]!='\0') for(i=0;i<5;i++) { wdate(s4[i]); } } void delay_20us() { uchar bt ; for(bt = 0;bt<10;bt++); } void TIM1init(void)//定时器1初始化 { TMOD=0x10;//定时器1工作方式1，TH1是重装值，TL1是初值 TH1=0x00; //重载值 溢出一次约50us TL1=0x00; //初始化值 } void test1() { TH1 = 0x00; TL1 = 0x00; trig1 = 1; delay_20us(); trig1 = 0; // EX1 = 1; while(!echo1); TR1 = 1; //定时器1启动 while(echo1); TR1 = 0; //定时器1关闭 dis=TH1 * 256 + TL1; t1=dis*344/2/10000; // EX1 = 0; } void test2() { TH1 = 0x00; TL1 = 0x00; trig2 = 1; delay_20us(); trig2 = 0; // EX1 = 1; while(!echo2); TR1 = 1; while(echo2); TR1 = 0; dis=TH1 * 256 + TL1; t2=dis*344/2/10000; } void main(void) { lcd_init(); //液晶屏初始化 delay(1); dat_init(); TIM1init(); while(1) { test1(); test2(); // sprintf(s2,"%d",t1); //int类型的L1变为char类型的S2 // sprintf(s3,"%d",t2); // sprintf(s4,"%d",t3); s2[0]=t1%100/10+0x30; s2[1]=t1%10+0x30; // s3[2]=t2/100+0x30; s3[0]=t2%100/10+0x30; s3[1]=t2%10+0x30; s4[0]=s2[0]; s4[1]=s2[1]; s4[2]=','; s4[3]=s3[0]; s4[4]=s3[1]; Data(); } }