1602电子时钟程序

#include<reg52.h> //52单片机头文件#define uchar unsigned char //宏定义#define uint unsigned intsbit rs=P1^0; //声明单片机P1口的第一位读写指令还是数据端sbit rw=P1^1; //声明单片机P1口的第二位读写数据端sbit lcden=P1^2; //声明单片机P1口的第三位液晶使能端sbit s1=P2^5; //声明单片机P2口的第六位按键控制端sbit s2=P2^6; //声明单片机P2口的第七位按键控制端sbit s3=P2^7; //声明单片机P2口的第八位按键控制端sbit s4=P2^0; //声明单片机P2口的第一位按键控制端sbit s5=P2^4; //声明单片机P2口的第五位按键控制端sbit a=P3^5; //声明单片机P3口的第六位按键控制端char count,shi,fen,miao,s1num,xp,s5num,date1; //定义有符号字符形变量char nian,tian,yue,nshi,nfen; //定义有符号字符形变量uchar code table[]=" 2000-01-01 Mon "; //定义日期时间数组uchar code table1[]=" 00:00:00";uchar code table2[]=" Alarm clock"; //定义日期时间数组uchar code table3[]=" 00:00";void delay(uint z){uint x,y;for(x=z;x>0;x--) //延时子函数for(y=110;y>0;y--);}void write_com(uchar com) //指令子函数{rs=0; //选择写指令lcden=0; //使能端初始为底P0=com; //将送到要写的指令数据线上delay(5); //延时待数据稳定lcden=1; //使能端给一个高脉冲把数据写入1602液晶delay(5); //延时lcden=0; //拉低使能端完成高脉冲}void write_date(uchar date) //数据子函数{rs=1; //选择写数据lcden=0;P0=date;delay(5);lcden=1;delay(5);lcden=0;}void init() //初始子函数{uchar num; //定义变量用来调用数组rw=0; //选择只写数据到液晶lcden=0; //初始使能端为低电平write_com(0x38); //设置16*2显示，5*7点阵，8位数据接口write_com(0x0c); //开显示，不显示光标write_com(0x06); //写一个字符指针自动加1write_com(0x01); //显示清零，数据指针清零write_com(0x80); //将数据指针定位到第一行第一个字处for(num=0;num<15;num++){write_date(table[num]); //写日期数组数据delay(20);}write_com(0x80+0x40); //选择将时间写到液晶第二行for(num=0;num<12;num++){write_date(table1[num]); //写时间数组数据delay(20);}write_com(0x80+16); //使用移屏操作for(num=0;num<13;num++){write_date(table2[num]); //写闹钟名称delay(20);}write_com(0x80+0x40+16); //选择移屏第二行for(num=0;num<10;num++){write_date(table3[num]); //写闹钟初始值delay(20);}TMOD=0x01; //选择定时器工作方式为方式1TH0=(65536-50000)/256; //装初值TL0=(65536-50000)%256;EA=1; //开总中断ET0=1; //选择定时器零TR0=1; //开定时器零}void write_sfm(uchar add,uchar date ) //子函数写时间日期到液晶上{uchar shi,ge; //定义变量用以分离十位和个位上的数字shi=date/10; //分离十位上的数字ge=date%10; // 分离个位上的数字write_com(0x80+0x40+add) ; //给出写的位置指令write_date(0x30+shi); //写十位上的数字write_date(0x30+ge); //写个位上的数字}void write_sfn(uchar add,uchar date) //子函数写时间日期到液晶上{uchar shi,ge; //定义变量用以分离十位和个位上的数字shi=date/10; //分离十位上的数字ge=date%10; // 分离个位上的数字write_com(0x80+add) ; //给出写的位置指令write_date(0x30+shi); //写十位上的数字write_date(0x30+ge); //写个位上的数字}void keyscan() //按键子函数{{s4=0; //让共同接口置零if(s1==0) //判断s1是否被按下{delay(5); //延时5ms去斗if(s1==0) //再次判断s1是否真被按下{s1num++; //设置变量判断s1被按下几次while(!s1); //松手检测if(s1num==1) //S1被第一次按下{TR0=0; //关定时器write_com(0x80+0x40+11); //确定指针位置在秒钟write_com(0x0f); //开显示显示光标光标闪烁}}if(s1num==2){write_com(0x80+0x40+8); //确定指针位置在分钟}if(s1num==3){write_com(0x80+0x40+5); //确定指针位置在时针}if(s1num==4){write_com(0x80+4); //确定指针位置在时针}if(s1num==5){write_com(0x80+7); //确定指针位置在时针}if(s1num==6){write_com(0x80+10); //确定指针位置在时针}if(s1num==7){write_com(0x80+14); //确定指针位置在时针}if(s1num==8){uchar num ;write_com(0x18) ;write_com(0x18) ;write_com(0x18) ;write_com(0x18) ;write_com(0x18) ;write_com(0x18) ;write_com(0x18) ; //移屏操作write_com(0x18) ;write_com(0x18) ;write_com(0x18) ; //整屏左移同时光标也跟着移动write_com(0x18) ;write_com(0x18) ;write_com(0x18) ;write_com(0x18) ;write_com(0x18) ;write_com(0x18) ;write_com(0x80+0x40+22); //确定指针位置在时针}if(s1num==9){write_com(0x80+0x40+25); //确定指针位置在时针}if(s1num==10){uchar n;while(n<24){n++; //移屏操作write_com(0x18);}s1num=0;n=0;write_com(0x0c); //结束光标显示表开始走TR0=1;}}}if(s1num!=0) //说明已S1被按下{if(s2==0) //判断S2是否被按下{delay(5); //判断S2是否真被按下if(s2==0); //判断S2是否真被按下{while(!s2); //松手检测if(s1num==1) //判断S1被按下一下{miao++; //秒自加一if(miao==60) //判断miao是否为60miao=0; //秒清零write_sfm(10,miao) ; //把秒数据写到指定位置write_com(0x80+0x40+11); //不让指针向后移}if(s1num==2) //判断S1被按下两下{fen++; //分自加一if(fen==60) //判断fen是否为60fen=0; //fen清零write_sfm(7,fen) ; //把fen数据写到指定位置write_com(0x80+0x40+8); //不让指针向后移}if(s1num==3) //判断S1被按下三下{shi++; //shi自加一if(shi==24) //判断shi是否为24shi=0; //shi清零write_sfm(4,shi) ; //把shi数据写到指定位置write_com(0x80+0x40+5); //不让指针向后移}if(s1num==4) //判断S1被按下四下{nian++; //nian自加一write_sfn(3,nian) ; //把年数据写到指定位置write_com(0x80+4); //不让指针向后移}if(s1num==5) //判断S1被按下五下{yue++; //yue自加一if(yue==13) //使月循环加yue=1;write_sfn(6,yue) ; //把月数据写到指定位置write_com(0x80+7); //不让指针向后移}if(s1num==6) //判断S1被按下六下{tian++; //tian自加一if(yue==1,3,5,7,8,10,12){if(tian==32)tian=1;}if(yue==2){if(tian==29)tian=1;}if(yue==4){if(tian==31) //解决不同的月有不同的天的问题tian=1;}if(yue==6){if(tian==31)tian=1;}if(yue==9){if(tian==31)tian=1;}if(yue==11){if(tian==31)tian=1;}write_sfn(9,tian) ; //把天数据写到指定位置write_com(0x80+10); //不让指针向后移}if(s1num==8) //判断S1被按下八下{nshi++; //闹钟的时自加一if(nshi==24)nshi=0;write_sfm(21,nshi) ;write_com(0x80+0x40+22);}if(s1num==9) //判断S1被按下九下{nfen++; //闹钟的分自加一if(nfen==60) //判断nfen是否为60nfen=0; //nfen清零write_sfm(24,nfen) ; //把nfen数据写到指定位置write_com(0x80+0x40+25); //不让指针向后移}}}if(s1num==7) //判断S1被按下七下{if(s5==0){delay(5);if(s5==0){s5num++;while(!s5);if(s5num==1){write_com(0x80+12);write_date(0x4D);write_com(0x80+13);write_date(0x6F); //写星期一write_com(0x80+14);write_date(0x6E);write_com(0x80+14);}if(s5num==2){write_com(0x80+12);write_date(0x54);write_com(0x80+13); //写星期二write_date(0x75);write_com(0x80+14);write_date(0x65);write_com(0x80+14);}if(s5num==3){write_com(0x80+12);write_date(0x57);write_com(0x80+13);write_date(0x65); //写星期三write_com(0x80+14);write_date(0x64);write_com(0x80+14);}if(s5num==4){write_com(0x80+12);write_date(0x54);write_com(0x80+13);write_date(0x68); //写星期四write_com(0x80+14);write_date(0x75);write_com(0x80+14);}if(s5num==5){write_com(0x80+12);write_date(0x46);write_com(0x80+13);write_date(0x72); //写星期五write_com(0x80+14);write_date(0x69);write_com(0x80+14);}if(s5num==6){write_com(0x80+12);write_date(0x53);write_com(0x80+13);write_date(0x61); //写星期六write_com(0x80+14);write_date(0x74);write_com(0x80+14);}if(s5num==7){write_com(0x80+12);write_date(0x53);write_com(0x80+13);write_date(0x75); //写星期日write_com(0x80+14);write_date(0x6E);write_com(0x80+14);}if(s5num==7){s5num=0;}}}}if(s3==0) //判断S3是否被按下{delay(5); //判断S3是否真被按下if(s3==0) //判断S3是否真被按下{while(!s3); //松手检测if(s1num==1) //判断S1被按下一下{miao--; //秒自减一if(miao==-1) //当秒等于-1时miao=59; //把秒赋值为59write_sfm(10,miao); //把秒数据写到指定位置write_com(0x80+0x40+11); //不让指针向后移}if(s1num==2) //判断S1被按下两下{fen--; //分自减一if(fen==-1) //当分等于-1时fen=59; //把分赋值为59write_sfm(7,fen); //把分数据写到指定位置write_com(0x80+0x40+8); //不让指针向后移}if(s1num==3) //判断S1被按下三下{shi--; //时自减一if(shi==-1) //当时等于-1时shi=23; //把时赋值为59write_sfm(4,shi); //把时数据写到指定位置write_com(0x80+0x40+5); //不让指针向后移}if(s1num==4) //判断S1被按下四下{nian--; //年自减一if(nian==-1){nian=0; //不让年少于2000}write_sfn(3,nian); //把时数据写到指定位置write_com(0x80+4); //不让指针向后移}if(s1num==5) //判断S1被按下五下{yue--; //月自减一if(yue==-1) //当月等于-1时yue=12; //把月赋值为12if(yue==0)yue=12; //解决月第一次减不正确的问题write_sfn(6,yue); //把时数据写到指定位置write_com(0x80+7); //不让指针向后移}if(s1num==6) //判断S1被按下六下{tian--; //天自减一if(yue==2){if(tian==-1)tian=28;if(tian==0)tian=28;}if(yue==4){if(tian==-1)tian=30;if(tian==0) // 解决不同的月有不同的天的问题tian=30;}if(yue==6){if(tian==-1)tian=30;if(tian==0)tian=30;}if(yue==9){if(tian==-1)tian=30;if(tian==0)tian=30;}if(yue==11){if(tian==-1)tian=30;if(tian==0)tian=30;}if(yue==1,3,5,7,8,10,12){if(tian==-1)tian=31;if(tian==0)tian=31;}write_sfn(9,tian); //把时数据写到指定位置write_com(0x80+10); //不让指针向后移}if(s1num==8) //判断S1被按下八下{nshi--; //闹钟的时自减一if(nshi==-1)nshi=23;write_sfm(21,nshi) ; //把nshi数据写到指定位置write_com(0x80+0x40+22); //不让指针向后移}if(s1num==9) //判断S1被按下九下{nfen--; //闹钟的分自加一if(nfen==-1) //判断nfen是否为-1nfen=59; //nfen为59write_sfm(24,nfen) ; //把nfen数据写到指定位置write_com(0x80+0x40+25); //不让指针向后移}}}}}void main() //主函数{init(); //初始化函数while(1){keyscan(); //控制按键}}void timer0() interrupt 1 //中断子函数{TH0=(65536-50000)/256; //重装初值TL0=(65536-50000)%256;count++; //用以计时的变量if(count==20) //判断中断时间是否为一秒{count=0; //为一秒count清零重新计时miao++; //秒加一if(miao==60) //判断miao是否为60{miao=0; //为60miao清零fen++; //fen加一if(fen==60) //判断fen是否为60{fen=0; //为60fen清零shi++; //时加一if(shi==24) //判断shi是否为24{shi=0; //为24shi清零tian++; //天自加一s5num++;if(s5num==1){write_com(0x80+12);write_date(0x4D);write_com(0x80+13);write_date(0x6F); //写星期一write_com(0x80+14);write_date(0x6E);write_com(0x80+14);}if(s5num==2){write_com(0x80+12);write_date(0x54);write_com(0x80+13);write_date(0x75); //写星期二write_com(0x80+14);write_date(0x65);write_com(0x80+14);}if(s5num==3){write_com(0x80+12);write_com(0x80+13);write_date(0x65); //写星期三write_com(0x80+14);write_date(0x64);write_com(0x80+14);}if(s5num==4){write_com(0x80+12);write_date(0x54);write_com(0x80+13);write_date(0x68); //写星期四write_com(0x80+14);write_date(0x75);write_com(0x80+14);}if(s5num==5){write_com(0x80+12);write_date(0x46);write_com(0x80+13);write_date(0x72); //写星期五write_com(0x80+14);write_date(0x69);write_com(0x80+14);}if(s5num==6){write_com(0x80+12);write_date(0x53);write_com(0x80+13);write_date(0x61); //写星期六write_com(0x80+14);write_date(0x74);write_com(0x80+14);}if(s5num==7){write_com(0x80+12);write_com(0x80+13);write_date(0x75); //写星期日write_com(0x80+14);write_date(0x6E);write_com(0x80+14);}if(s5num==7){s5num=1;}if(yue==1,3,5,7,8,10,12){if(tian==32)tian=1;}if(yue==4){if(tian==31) //解决天循环问题tian=1;}if(yue==6){if(tian==31)tian=1;}if(yue==9){if(tian==31)tian=1;}if(yue==11){if(tian==31)tian=1;}if(yue==2){if(tian==29)tian=1;}write_sfn(9,tian); //写天到指定位置if(tian==1){yue++;if(yue==13) //月循环{yue=1;}if(yue==1)nian++;write_sfn(3,nian); //写年到指定位置}write_sfn(6,yue); //写月到指定位置}write_sfm(4,shi); //写小时到指定位置}write_sfm(7,fen); //写分钟到指定位置if(shi==nshi&&fen==nfen){uchar n,s;while(n<60){n++;if(s5==0){ //控制闹钟delay(5);if(s5==0){while(!s5);s++;}}if(s!=1){s=0;a=0; delay(50);a=1; delay(50);a=0; delay(50);a=1; delay(50);a=0; delay(50);a=1; delay(50);a=0; delay(50);a=1; delay(50); //蜂鸣器的响与断a=0; delay(50);a=1; delay(50);a=0; delay(50);a=1; delay(50);a=0; delay(50);a=1; delay(50);a=0; delay(50);a=1; delay(50);a=0; delay(50);a=1; delay(50);a=0; delay(50);a=1; delay(50);}}if(n==60){fen++;if(fen==60){fen=0; shi++;} write_sfm(4,shi); //闹钟响一分钟分自加一}write_sfm(7,fen); //写分钟到指定位置n=0;s=0;}}}write_sfm(10,miao); //写秒钟到指定位置}。