【优秀课设】51单片机LCD1602显示的温度控制系统设计 包括时间显示 校时 设置最值

1、将DS18B20温度传感器的温度读出来，并在LCD1602上显示出来。

2、在LCD上分别切换显示，软件设计时钟（时、分、秒），和当前温度值，和温度上下控制值。并可以通过按键进行修改设置，温度高于上限，或下线都由蜂鸣器发出报警声。

3、实现校时、校分、校秒功能。

/download/weixin_53403301/13724845

附件里附带所有程序、工程以及仿真图，仿真图为T-LCD2，程序工程为T-LCD，主程序是main.c

附件链接：/download/weixin_53403301/13724845

实验原理图：（用的protues仿真 C代码用keil编译器所写）

硬件实物图

[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-Zj6JwAx1-1622607997660)(https://img-/upload/20/18/1608303045_346176.jpg#pic_center)]

模式0为显示温度 时间 模式123分别为调个位、十位、十分位 按对应的按键就能实现调最高或最低 模式45显示最高、最低温度

570行主程序+100温度传感器+70行1602显示 实现单片机温度时间显示 精确到十分位 并且有校时、设置最值温度报警功能 精确到十分位

#include<reg52.h> //µ÷ÓÃ52µ¥Æ¬»ú¿â#include"1602.h" //µ÷ÓÃLCD1602¿â#include"ds18b20.h" //µ÷ÓÃds18b20ζȴ«¸ÐÆ÷#define uint unsigned int#define uchar unsigned charuchar hour,min,sec,count,hour1,hour2, //¶¨ÒåСʱ ·ÖÖÓ Ãë ¶ÔÓ¦µÄʮλ¸öλ ÒÔ¼° count¼ÆÊý sec1,sec2,min1,min2; sbit speaker=P2^1; //¶¨Òå·äÃùÆ÷sbit key1=P1^0; //×îµÍζÈÉèÖÃsbit key2=P1^1;//×î¸ßζÈÉèÖÃsbit key3=P1^2; //Á¬½ÓÇл»Ä£Ê½µÄ±¸Óÿª¹Ø P33ºÍP12¿Ú¶Ì½Ó ÓÃÓÚÇл»Ä£Ê½ºÍÍ˳ö±¨¾¯ÖжÏsbit keyh=P1^5; //Уʱsbit keym=P1^6; //У·Ösbit keys=P1^7; //УÃë//¶¨Òåʱ¼ä°´¼üuint tem; //¶¨Òå²É¼¯Î¶Èint htem,htem2,time,time2,x,y,z,dot,dot2,maxtem,mintem; //¶¨ÒåζÈʮλÊý¡¢¸öλÊý¡¢Ð¡Êý£¬ÒÔ¼°ÆäÈýÖÖģʽµÄ±ê¼ÇÖµint cnt1=1,cnt2=1,cnt3=1,cnt4=1,cnt5=1,cnt6=1,cnt7=1; //¶¨Òå¼ÆÊý±äÁ¿int i;uchar mode=0; //¶¨Òåģʽ±äÁ¿uchar code t3[]={" H/L=0/1:C"}; //ÏÔʾµ÷×îֵζȵÄʮλuchar code t4[]={"O/D: C"}; //ÏÔʾµ÷×îֵζȵĸöλ/СÊýλ×ÖÄ£uchar code table2[]={'0','1','2','3','4','5','6','7','8','9',':'}; //ÏÔʾʱ¼äµÄ×ÖÄ£uchar code t5[]={"Max . CD"}; //ÏÔʾ×î¸ßζȵÄ×ÖÄ£uchar code t6[]={"Min . CD"}; //ÏÔʾ×îµÍζȵÄ×ÖÄ£//ÑÓʱº¯Êývoid delay1(uint i){while(i--);}//ÏÔʾº¯Êý1 ³õʼÏÔʾvoid display(uint dat,uchar add){uchar bai,shi ,ge;bai=dat/100;shi=dat%100/10;ge=dat%10; writelcd_cmd(add);writelcd_dat(bai+0x30);writelcd_dat(shi+0x30);writelcd_cmd(add+3);writelcd_dat(ge+0x30);}void lcd_min() //¶¨Òå×îСζÈÏÔʾ{uchar l;writelcd_cmd(0x38); //³õʼ»¯ÆÁÄÇåÆÁ»delay(5);writelcd_cmd(0x38);delay(5);writelcd_cmd(0x38);writelcd_cmd(0x08);writelcd_cmd(0x01);writelcd_cmd(0x06);writelcd_cmd(0x0c);writelcd_cmd(0x80);writelcd_cmd(0xc0);for(l=0;l<16;l++) //ÒÀ´Î¶ÁÈ¡t6²¢ÏÔʾ{writelcd_dat(t6[l]);}display(mintem,0xca);delay1(5000000000); //ÑÓʱÏÔʾ}void lcd_max() //¶¨Òå×î´óζÈÏÔʾ{uchar k;writelcd_cmd(0x38); //³õʼ»¯ÆÁÄ»ÇåÆÁdelay(5);writelcd_cmd(0x38);delay(5);writelcd_cmd(0x38);writelcd_cmd(0x08);writelcd_cmd(0x01);writelcd_cmd(0x06);writelcd_cmd(0x0c);writelcd_cmd(0x80);writelcd_cmd(0xc0);for(k=0;k<16;k++) //ÒÀ´Î¶ÁÈ¡t5²¢ÏÔʾ{writelcd_dat(t5[k]);}display(maxtem,0xca);delay1(5000000000);}void write_Char(unsigned char a,unsigned char b,unsigned char dat) //ÏÔʾʱ¼ä³ÌÐòĸ³ÌÐò ¶¨Î» {if (b == 0) {writelcd_cmd(0x80 + a); }else {writelcd_cmd(0xC0 + a); }writelcd_dat(dat); } void display4(uchar hour1,uchar hour2,uchar min1,uchar min2,uchar sec1,uchar sec2) //ÏÔʾʱ¼ä×Ó³ÌÐò È¡Öµ{write_Char(4,0,table2[hour1]); //ÏÔʾСʱwrite_Char(5,0,table2[hour2]); write_Char(6,0,table2[0x0a]); //ÏÔʾðºÅ write_Char(7,0,table2[min1]); //·ÖÖÓwrite_Char(8,0,table2[min2]); write_Char(9,0,table2[0x0a]); //ÏÔʾðºÅwrite_Char(10,0,table2[sec1]); //Ãëwrite_Char(11,0,table2[sec2]); } //ÏÔʾº¯Êý2 µ÷×îֵζȵÍʮλ ÔÚLCDÉÏÅÅÏÔʾvoid display2(uint dat,uchar add){uchar bai,shi ;bai=dat/100;shi=dat%100/10;//ge=dat%10; writelcd_cmd(add);writelcd_dat(shi+0x30);writelcd_dat(bai+0x30);writelcd_cmd(add+3);//writelcd_dat(ge+0x30);}//ÏÔʾº¯Êý3 µ÷×îֵζȵĸöλ/СÊý ÔÚLCDÏÂÅÅÏÔʾvoid display3(uint dat,uchar add){uchar ge;//bai=dat/100;//shi=dat%100/10;ge=dat%10; writelcd_cmd(add);//writelcd_dat(shi+0x30);//writelcd_dat(bai+0x30);//writelcd_cmd(add+3);writelcd_dat(ge+0x30);}//°´¼üɨÃ躯Êývoid keyscan(){uchar i,j; //¶¨Òåi/jwritelcd_cmd(0x80); //ÏÔʾº¯Êý±íʾÒÔ´ËÏÔʾt3×ÖÄ£ÀïÃæµÄ×Ö·û for(i=0;i<16;i++){writelcd_dat(t3[i]);}writelcd_cmd(0xc0);for(j=0;j<16;j++) //ÏÔʾº¯Êý±íʾÒÔ´ËÏÔʾt4×ÖÄ£ÀïÃæµÄ×Ö·û {writelcd_dat(t4[j]);}while(mode!=0) //µ±mode²»Îª0ʱ{display2(htem,0x8b); //ÏÔʾµ÷ʮλdisplay3(time,0xca); //ÏÔʾµ÷¸öλСÊýλwhile(mode!=0){switch(mode) //Çл»Ä£Ê½caseÓï¾äÑ­»· 5¸öģʽ 5¸öÑ­»· 6¸ö±äÁ¿ ³õʼģʽΪ0 Çл»ºó¶ÔÓ¦µØ·½µÄ¹â±êÉÁ˸{case 1:writelcd_cmd(0xc0+10);writelcd_cmd(0x0f);break; //µ÷¸öλcase 2:writelcd_cmd(0x80+11);writelcd_cmd(0x0f);break; //µ÷ʮλcase 3:writelcd_cmd(0xc0+10);writelcd_cmd(0x0f);break; //µ÷СÊýλ case 4:lcd_max();break; //ÏÔʾ×î´óÎÂ¶È case 5:lcd_min();break; //ÏÔʾ×îСζÈdefault:mode=0;break;}if(key2==0&&mode==1) //ģʽΪ1 key2Ϊ0ʱ µ÷×î¸ßλµÄ¸öλ{delay(50); //°´¼üÏû¶¶y=0;display3(y,0x80);writelcd_cmd(0xca+11); //max one ÔÚ×óÉϽÇÏÔʾ0 ±íʾµ÷×î¸ßζÈif(key2==0){delay(10); //Ê®¸öÑ­»· ¶ÔÓ¦0-9Êý×Öcnt1++; //¼ÆÊý+1while(key2==0);switch(cnt1%11) //°´¼üµ½10ÒÔºóÇåÁã{case 1:time=0;display3(time,0xca);writelcd_cmd(0xca+11);break; //ÔÚ0xcaµÄµØ·½ÏÔʾ¸öλֵ ¹â±êÉÁ˸case 2:time=1;display3(time,0xca);writelcd_cmd(0xca+11);break; case 3:time=2;display3(time,0xca);writelcd_cmd(0xca+11);break; case 4:time=3;display3(time,0xca);writelcd_cmd(0xca+11);break; case 5:time=4;display3(time,0xca);writelcd_cmd(0xca+11);break; case 6:time=5;display3(time,0xca);writelcd_cmd(0xca+11);break; case 7:time=6;display3(time,0xca);writelcd_cmd(0xca+11);break; case 8:time=7;display3(time,0xca);writelcd_cmd(0xca+11);break;case 9:time=8;display3(time,0xca);writelcd_cmd(0xca+11);break; case 10:time=9;display3(time,0xca);writelcd_cmd(0xca+11);break; default:break;}}}if(key1==0&&mode==1) //ÀàËÆ ×îµÍ¸öλ{delay(50);y=1;display3(y,0x80);writelcd_cmd(0xca+11); //min one ÔÚ×óÉϽÇÏÔʾ1 ±íʾµ÷×îµÍζÈif(key1==0){delay(10);cnt4++;while(key1==0);switch(cnt4%11){case 1:time2=0;display3(time2,0xca);writelcd_cmd(0xca+11);break; case 2:time2=1;display3(time2,0xca);writelcd_cmd(0xca+11);break; case 3:time2=2;display3(time2,0xca);writelcd_cmd(0xca+11);break; case 4:time2=3;display3(time2,0xca);writelcd_cmd(0xca+11);break; case 5:time2=4;display3(time2,0xca);writelcd_cmd(0xca+11);break; case 6:time2=5;display3(time2,0xca);writelcd_cmd(0xca+11);break; case 7:time2=6;display3(time2,0xca);writelcd_cmd(0xca+11);break; case 8:time2=7;display3(time2,0xca);writelcd_cmd(0xca+11);break; case 9:time2=8;display3(time2,0xca);writelcd_cmd(0xca+11);break; case 10:time2=9;display3(time2,0xca);writelcd_cmd(0xca+11);break; default:break;}}}if(key2==0&&mode==2) //×î¸ßʮλ{delay(10);x=00;display2(x,0x80);writelcd_cmd(0x80+11); //max ten ÔÚ×óÉϽÇÏÔʾ00 ±íʾµ÷×î¸ßif(key2==0){cnt2++;while(key2==0);switch(cnt2%11){case 1:htem=00;display2(htem,0x8b);writelcd_cmd(0x80+11);break; case 2:htem=10;display2(htem,0x8b);writelcd_cmd(0x80+11);break; case 3:htem=20;display2(htem,0x8b);writelcd_cmd(0x80+11);break; case 4:htem=30;display2(htem,0x8b);writelcd_cmd(0x80+11);break; case 5:htem=40;display2(htem,0x8b);writelcd_cmd(0x80+11);break; case 6:htem=50;display2(htem,0x8b);writelcd_cmd(0x80+11);break; case 7:htem=60;display2(htem,0x8b);writelcd_cmd(0x80+11);break; case 8:htem=70;display2(htem,0x8b);writelcd_cmd(0x80+11);break; case 9:htem=80;display2(htem,0x8b);writelcd_cmd(0x80+11);break; case 10:htem=90;display2(htem,0x8b);writelcd_cmd(0x80+11);break; default:break;}}}if(key1==0&&mode==2){delay(10);x=10;display2(x,0x80);writelcd_cmd(0x80+11); //min ten ÔÚ×óÉϽÇÏÔʾ10±íʾ µ÷×îµÍif(key1==0){cnt3++;while(key1==0);switch(cnt3%11){case 1:htem2=00;display2(htem2,0x8b);writelcd_cmd(0x80+11);break; case 2:htem2=10;display2(htem2,0x8b);writelcd_cmd(0x80+11);break; case 3:htem2=20;display2(htem2,0x8b);writelcd_cmd(0x80+11);break; case 4:htem2=30;display2(htem2,0x8b);writelcd_cmd(0x80+11);break; case 5:htem2=40;display2(htem2,0x8b);writelcd_cmd(0x80+11);break; case 6:htem2=50;display2(htem2,0x8b);writelcd_cmd(0x80+11);break; case 7:htem2=60;display2(htem2,0x8b);writelcd_cmd(0x80+11);break; case 8:htem2=70;display2(htem2,0x8b);writelcd_cmd(0x80+11);break; case 9:htem2=80;display2(htem2,0x8b);writelcd_cmd(0x80+11);break; case 10:htem2=90;display2(htem2,0x8b);writelcd_cmd(0x80+11);break; default:break;}}}if(key2==0&&mode==3) //×î¸ßСÊý{delay(50);z=00;display2(z,0x80);writelcd_cmd(0xca+11); //max dotif(key2==0){delay(10);cnt5++;while(key2==0);switch(cnt5%11){case 1:dot=0;display3(dot,0xca);writelcd_cmd(0xca+11);break; case 2:dot=1;display3(dot,0xca);writelcd_cmd(0xca+11);break;case 3:dot=2;display3(dot,0xca);writelcd_cmd(0xca+11);break; case 4:dot=3;display3(dot,0xca);writelcd_cmd(0xca+11);break;case 5:dot=4;display3(dot,0xca);writelcd_cmd(0xca+11);break;case 6:dot=5;display3(dot,0xca);writelcd_cmd(0xca+11);break; case 7:dot=6;display3(dot,0xca);writelcd_cmd(0xca+11);break;case 8:dot=7;display3(dot,0xca);writelcd_cmd(0xca+11);break; case 9:dot=8;display3(dot,0xca);writelcd_cmd(0xca+11);break;case 10:dot=9;display3(dot,0xca);writelcd_cmd(0xca+11);break; default:break;}}}if(key1==0&&mode==3) //×îµÍСÊý{delay(50);z=10;display2(z,0x80);writelcd_cmd(0xca+11); //min dotif(key1==0){delay(10);cnt6++;while(key1==0);switch(cnt6%11){case 1:dot2=0;display3(dot2,0xca);writelcd_cmd(0xca+11);break; case 2:dot2=1;display3(dot2,0xca);writelcd_cmd(0xca+11);break; case 3:dot2=2;display3(dot2,0xca);writelcd_cmd(0xca+11);break;case 4:dot2=3;display3(dot2,0xca);writelcd_cmd(0xca+11);break;case 5:dot2=4;display3(dot2,0xca);writelcd_cmd(0xca+11);break; case 6:dot2=5;display3(dot2,0xca);writelcd_cmd(0xca+11);break;case 7:dot2=6;display3(dot2,0xca);writelcd_cmd(0xca+11);break;case 8:dot2=7;display3(dot2,0xca);writelcd_cmd(0xca+11);break; case 9:dot2=8;display3(dot2,0xca);writelcd_cmd(0xca+11);break;case 10:dot2=9;display3(dot2,0xca);writelcd_cmd(0xca+11);break; default:break;}}}if(mode==4) //ģʽ4 ÏÔʾ×î´óζÈ{maxtem=htem*10+time*10+dot;lcd_max();}if(mode==5) //×îµÍζÈ{mintem=htem2*10+time2*10+dot2;lcd_min(); }}}lcd_init(); //ģʽΪ0ʱִÐÐLCD³õʼ»¯º¯Êý}//Öжϳõʼ»¯º¯Êývoid init(){lcd_init(); //lcd³õʼ»¯speaker=1; //·äÃùÆ÷¿ÚĬÈϸߵçƽmode=0; //ģʽĬÈÏ0htem=80; //×î¸ßζÈĬÈÏ80time=0;htem2=10; //×îµÍζÈĬÈÏ10time2=0;dot=0;dot2=0;EA=1;//×ÜÖжϿªÆôEX1=1;//ÍⲿÖжÏ1ÔÊÐíET1=1;//¶¨Ê±Æ÷1ÔÊÐíTMOD=0X01;//¶¨Ê±ÖжÏ1£¬Ä£Ê½1IT1=1;//ÖжÏ1 ϽµÑØ´¥·¢TH1=0Xee;//¶¨Ê±ÖжÏ1 0.5usTL1=0X00;TR1=0; //¶¨Ê±ÖжÏ1ĬÈϹرÕcount=0; //ʱ¼ä¼ÆÊýĬÈÏΪ0hour=00; //Сʱ00min=00; //·ÖÖÓ00sec=00; //Ãë00TH0=(65536-50000)/256; //ÄÚ²¿ÖжÏT0³õʼ»¯TL0=(65536-50000)%256; TR0=1; //ÄÚ²¿ÖжÏT0¿ªÆôET0=1; }//Ö÷º¯Êývoid main(){P1=0xe7;//³õʼP1¿Ú£¬P14£¬P13ΪµÍµçƽ ʹS1 S5 S9 S14 S15 S16±äΪ½ÓµØµÄÆÕͨ¿ª¹Ø S9ÓëP33¶Ì½Ó ÓÃÓÚÇл»Ä£Ê½ºÍÍ˳ö±¨¾¯ÖжÏinit(); //Öжϳõʼ»¯while(1){if(mode!=0) //µ±Ä£Ê½²»Îª0{keyscan();} //Ö´Ðа´¼üɨÃè ÒÔ¼°µ÷ζȵijÌÐòelse if(mode==0) //ģʽΪ0ʱ{delay(100);tmpchange(); //ÔÚds18b20È¡Êý¾Ýtem=tmp(); //ζÈÖµ»ñÈ¡ ΪÕûÊý ÇÒСÊýλʵ¼ÊÉÏÊǸöλ Èç35.5ÉãÊ϶ȶÔÓ¦µÄÖµÊÇ355if(keyh==0) //µ±S14±ÕºÏʱ ʵÏÖСʱ¼ÓÒ» {delay(5); if(keyh==0) {if(hour!=23) hour++; //hour=23ºóÇåÁãelse hour=0; } while(!keyh); //¼ì²âËÉÊÖ } if(keym==0) //ʵÏÖ·ÖÖÓ¼ÓÒ» {delay(5); if(keym==0) {if(min!=59) //59ºóÇåÁã{min++; } else {min=0; } } while(!keym); //ËÉÊÖ¼ì²â } if(keys==0) //ʵÏÖÃë¼ÓÒ» {delay(5); if(keys==0) {if(sec!=59) //59ºóÇåÁã{sec++; } else {sec=0; } } while(!keys); } hour1=hour/10; //Сʱʮλhour2=hour%10; //Сʱ¸öλmin1=min/10; //·ÖÖÓʮλmin2=min%10; //·ÖÖÓ¸öλsec1=sec/10; //Ãëʮλsec2=sec%10; //Ãë¸öλmaxtem=htem*10+time*10+dot;mintem=htem2*10+time2*10+dot2;if(tem>=maxtem)//¸ßÓÚ×î¸ß{TR1=1;//T1ÖжϿªÆô}else if(tem<=mintem)//µÍÓÚ×îµÍ{TR1=1;//T1ÖжϿªÆô}else//´¦ÓÚÖмä{TR1=0;//T1ÖжϹرÕ//±¨¾¯µÆÃð}delay(10);display(tem,0xca); //Ò»Ö±ÏÔʾζÈdisplay4(hour1,hour2,min1,min2,sec1,sec2); //Ò»Ö±ÏÔʾʱÖÓ delay(100);}}}//ÍⲿÖжϷþÎñº¯Êývoid exter()interrupt 2 //ÍⲿÖжÏ2{delay(50); //°´¼üÏû¶¶if(P3^3==0) //Á¬½ÓP12ºÍP33µÄ¿ª¹ØS9±ÕºÏdelay(50); //Ïû¶¶mode++; //ģʽ+1mode=mode%7 ; //ÿ°´4´ÎºóÖÃÁãdelay(50);}//¶¨Ê±ÖжϷþÎñº¯Êývoid timer0()interrupt 3 //¶¨Ê±ÖжÏT1{TH1=0Xee; //ÖØ×°ÔØTL1=0X00;speaker=~speaker; //·äÃùÆ÷²»¶ÏÈ¡·´delay1(1); //·äÃùÆ÷±¨¾¯ÆµÂÊÑÓʱTR1=1; //¶¨Ê±ÖжÏ1Ò»Ö±¿ªÆôif(key3==0) //µ±±ÕºÏ¿ª¹ØS9ʱ P12ºÍP33ΪµÍµçƽ ¹Ø±ÕÖжÏT1 ²¢ÇÒÇл»µ½µ÷×îֵζȵÄģʽ1TR1=0;}void count0() interrupt 1 //T0ÖÐ¶Ï Ê±¼ä¼Æʱ³ÌÐò{TH0=(65536-50000)/256; //ÖØгõʼ»¯T0TL0=(65536-50000)%256; count++; //count+1if(count==20) //ÿ20´Î»úÆ÷Ñ­»·ÊµÏÖÃë½ø1{count=0; sec++; if(sec==60) //Ãëµ½60ʱÇåÁã{sec=0; min++; //·Ö+1if(min==60) //·Öµ½60ʱÇåÁã{min=0; hour++; //Сʱ+1if(hour==24) //Сʱµ½24ʱÇåÁã{hour=0; } } } } }

#include <reg52.h> //µ¼Èë52¿â#include"1602.h" //µ¼Èë1602¿â#define uchar unsigned char#define uint unsigned intsbit DS=P2^7; //¶¨ÒåÎÂ¶È½Ó¿Ú void dsreset() {uint i;DS=0;i=103;while(i>0)i--; //ÑÓʱ´óÔ¼480us~960usDS=1;i=4;while(i>0)i--; //ÑÓʱ´óÔ¼60us~240us}bit tmpreadbit() //18b20¶ÁһλÊý¾Ý{uint i;bit dat;DS=0;i++; //À­µÍ´óÔ¼1us×óÓÒDS=1;i++;i++;dat=DS; //¶Á»ØÊý¾Ýi=8;while(i>0)i--; //ÑÓʱ45ms×óÓÒreturn (dat);}uchar tmpread() //18b20¶ÁÒ»¸ö×Ö½Úº¯Êý{uchar i,j,dat;dat=0;for(i=1;i<=8;i++){j=tmpreadbit();dat=(j<<7)|(dat>>1); }return(dat);}void tmpwrite1() //Ïò18b20дÈë1{uint i;DS=0;i++;i++;//ÑÓʱ15us×óÓÒDS=1;i=8;while(i>0)i--;}void tmpwrite0() //Ïò18b20дÈë0{uint i;DS=0; i=8;while(i>0)i--; //ÑÓʱ60us×óÓÒDS=1;i++;i++;}void tmpwritebyte(uchar dat)//18b20дһ¸ö×Ö½Úº¯Êý {uchar j;bit testb;for(j=1;j<=8;j++){testb=dat&0x01;dat=dat>>1;if(testb){tmpwrite1();}else{tmpwrite0(); }}}void tmpchange() //18b20ζÈת»»º¯Êý{//18b20Ö´ÐÐÐòÁУºdsreset();//1¡¢³õʼ»¯delay(1);//tmpwritebyte(0xcc); //2¡¢rom²Ù×÷Ö¸Áîtmpwritebyte(0x44); //3¡¢18b20¹¦ÄܲÙ×÷Ö¸Áî}uint tmp() //ζÈÈ¡Öµ tempֵΪÎÞ·ûºÅÕûÊý ¿ÉΪ¸ºÊý{uint temp;float tt;uchar a,b;dsreset();delay(1);tmpwritebyte(0xcc);tmpwritebyte(0xbe);a=tmpread();b=tmpread();temp=b;temp<<=8; temp=temp|a;tt=temp*0.0625;temp=tt*10+0.5; //¼Ó0.5ËÄÉáÎåÈëreturn temp;}

#include<reg52.h>#define uint unsigned int #define uchar unsigned charsbit rs=P3^0; //¶¨ÒåLCD½Ó¿Úsbit rw=P3^1;sbit en=P3^2;uchar code t1[]={"TX ZZN"}; //³õʼLCDÆÁÄ»ÉÏÐÐÏÔʾ °à¼¶ ÐÕÃûuchar code t2[]={"181105035 . CD"}; //ÏÂÐÐÏÔʾ ѧºÅ СÊýµã ÉãÊ϶ȼòдCDvoid delay(uint ms) //ÑÓʱ{uint i,j;for(i=ms;i>0;i--)for(j=110;j>0;j--);}void writelcd_cmd(uchar cmd)//Ïò1602Òº¾§ÏÔʾÆ÷ÀïдÈëÃüÁîµÄº¯Êý{en=0;rs=0;rw=0;delay(1);P0=cmd; //P0¿ÚÊä³öen=1;delay(1);en=0;}void writelcd_dat(uchar dat)//Ïò1602Òº¾§ÏÔʾÆ÷ÀïдÈëÊý¾ÝµÄº¯Êý{en=0;rs=1;rw=0;delay(1);P0=dat;en=1;delay(1);en=0;}void lcd_init() //³õʼ»¯1602Òº¾§ÏÔʾÆ÷µÄº¯Êý{uchar i,j;writelcd_cmd(0x38); //ÇåÆÁÏÔʾdelay(5);writelcd_cmd(0x38);delay(5);writelcd_cmd(0x38);writelcd_cmd(0x08);writelcd_cmd(0x01);writelcd_cmd(0x06);writelcd_cmd(0x0c);writelcd_cmd(0x80);for(i=0;i<16;i++){writelcd_dat(t1[i]); //ÿһλÒԴ˶ÁÈ¡×ÖÄ£t1²¢ÏÔʾ×Ö·û}writelcd_cmd(0xc0);for(j=0;j<16;j++) //ÒÀ´Î¶ÁÈ¡t2²¢ÏÔʾ{writelcd_dat(t2[j]);}}

具体的代码功能在附件程序里都有标注 代码就不放了 keil里面的标注会识别成特殊字符

【优秀课设】51单片机LCD1602显示的温度控制系统设计 包括时间显示 校时 设置最值温度报警功能