基于单片机的带有日历功能的数字时钟

基于单片机的带有日历功能的数字时钟

功能：

1.年、月、日，以及24小时制时间显示，均可调

2.自动判断是否闰年以及闰月，理论上至2100年

//去年写的，感觉以后要经常打理自己的博客，与众多Coder分享交流，所以现在才拿出来，多多包含

#include<reg51.h>#define uint unsigned int #define uchar unsigned char#define LCD1602_DATAPINS P0

uchar code table[]=" 2016-01-01 SUN";uchar code table1[]="    23:59:54";uchar count=0;uchar shi=23,fen=59,miao=54,nian=16,yue=1,ri=1;uchar k1_num=0;//k1/k2/k3按下的次数

//按键sbit k1=P1^1;//功能键sbit k2=P1^2;//加sbit k3=P1^3;//减

<pre name="code" class="cpp">void Delay1us(uint a);void LCD1602_WriteCom(uchar com);/*LCD1602写入8位命令子函数*/void LCD1602_WriteData(uchar dat); /*LCD1602写入8位数据子函数*/void LCD1602_Init();/*LCD1602初始化子程序*/  void Delay1us(uint a){uint b,c;for(c=a;c>0;c--)for(b=110;b>0;b--);}void LCD1602_WriteCom(uchar com)  //写入命令{LCD1602_E=0;LCD1602_RS=0;LCD1602_RW=0;LCD1602_DATAPINS=com;Delay1us(10);LCD1602_E=1;Delay1us(10);LCD1602_E=0;}   void LCD1602_WriteData(uchar dat)//写入数据{LCD1602_E=0;LCD1602_RS=1;LCD1602_RW=0;LCD1602_DATAPINS=dat;Delay1us(10);LCD1602_E=1;Delay1us(10);LCD1602_E=0;}void LCD1602_Init() //LCD初始化子程序{uint num; LCD1602_WriteCom(0x38);  //开显示LCD1602_WriteCom(0x0c);  //开显示不显示光标LCD1602_WriteCom(0x06);  //写一个指针加1LCD1602_WriteCom(0x01);  //清屏LCD1602_WriteCom(0x80);  //设置数据指针起点for (num=0;num<15;num++){  LCD1602_WriteData(table[num]);  Delay1us(10);}LCD1602_WriteCom(0x80+0x40);for (num=0;num<11;num++){  LCD1602_WriteData(table1[num]);  Delay1us(10);}TMOD=0X01;TH0=(65536-50000)/256;TL0=(65536-50000)%256;EA=1;//总中断ET0=1;TR0=1;}void LCD1602_WriteSFM(uchar add,uchar dat){  uchar shi,ge;  shi=dat/10;  ge=dat%10;  LCD1602_WriteCom(0x80+0x40+add);  LCD1602_WriteData(0x30+shi);//根据字符手册，写十位  LCD1602_WriteData(0x30+ge);//根据字符手册，写个位}void LCD1602_WriteNYR(uchar add,uchar dat){  uchar shi,ge;  shi=dat/10;  ge=dat%10;  LCD1602_WriteCom(0x80+add);  LCD1602_WriteData(0x30+shi);//根据字符手册，写十位  LCD1602_WriteData(0x30+ge);//根据字符手册，写个位}void keyscan(){//k1键指令if(k1==0){Delay1us(10);if(k1==0){k1_num++;while(!k1);if(k1_num==1){TR0=0;LCD1602_WriteCom(0x80+0x40+11);LCD1602_WriteCom(0x0f);}}if(k1_num==2){LCD1602_WriteCom(0x80+0x40+8);}if(k1_num==3){LCD1602_WriteCom(0x80+0x40+5);}if(k1_num==4)//跳转到日{LCD1602_WriteCom(0x80+10);}if(k1_num==5)//跳转到月{LCD1602_WriteCom(0x80+7);}if(k1_num==6)//跳转到年{LCD1602_WriteCom(0x80+4);}if(k1_num==7){k1_num=0;LCD1602_WriteCom(0x0c);if (yue==4||yue==6||yue==9||yue==11)  //防止调时间出现某月的日期超过最大值{if (ri>30)ri=30;LCD1602_WriteNYR(9,ri);}else if (yue==1||yue==3||yue==5||yue==7||yue==8||yue==10||yue==12){  if (ri>31)ri=31;LCD1602_WriteNYR(9,ri);}else if (yue==2){if (nian%4==0){if (ri>29)ri=29;}else {if (ri>28)ri=28;}LCD1602_WriteNYR(9,ri);}TR0=1;}}if(k1_num!=0){//k2键指令if(k2==0){Delay1us(5);if(k2==0){while(!k2);if(k1_num==1){miao++;if(miao==60)miao=0;LCD1602_WriteSFM(10,miao);LCD1602_WriteCom(0x80+0x40+11);}if(k1_num==2) //分{fen++;if(fen==60)fen=0;LCD1602_WriteSFM(7,fen);LCD1602_WriteCom(0x80+0x40+8);}if(k1_num==3)//时{shi++;if(shi==24)shi=0;LCD1602_WriteSFM(4,shi);LCD1602_WriteCom(0x80+0x40+5);}if(k1_num==4)//日{ri++;if (yue==4||yue==6||yue==9||yue==11){if(ri==31)ri=1;}else if (yue==1||yue==3||yue==5||yue==7||yue==8||yue==10||yue==12){if (ri==32)ri=1;}else if (yue==2){if (nian%4==0)//闰年{if (ri==30)ri=1;}else {   if (ri==29)   ri=1;}}LCD1602_WriteNYR(9,ri);LCD1602_WriteCom(0x80+10); //光标前移一位}if(k1_num==5)//月{yue++;if(yue==13)yue=1;LCD1602_WriteNYR(6,yue);LCD1602_WriteCom(0x80+7); //光标前移一位}if(k1_num==6)//年{nian++;if(nian==100)nian=0;LCD1602_WriteNYR(3,nian);LCD1602_WriteCom(0x80+4); //光标前移一位}}}//k3键指令if(k3==0){Delay1us(10);if(k3==0){while(!k3);if(k1_num==1){miao--;if(miao==-1)miao=59;LCD1602_WriteSFM(10,miao);LCD1602_WriteCom(0x80+0x40+11);}if(k1_num==2){fen--;if(fen==-1)fen=59;LCD1602_WriteSFM(7,fen);LCD1602_WriteCom(0x80+0x40+8);}if(k1_num==3){shi--;if(shi==-1)shi=23;LCD1602_WriteSFM(4,shi);LCD1602_WriteCom(0x80+0x40+5);}if(k1_num==4)//日{ri--;if(ri==0)if (yue==4||yue==6||yue==9||yue==11)ri=30;else if (yue==1||yue==3||yue==5||yue==7||yue==8||yue==10||yue==12)ri=31;else if (yue==2)if (nian%4==0)ri=29;elseri=28;LCD1602_WriteNYR(9,ri);LCD1602_WriteCom(0x80+10); //光标前移一位}if(k1_num==5)//月{yue--;if(yue==0)yue=12;LCD1602_WriteNYR(6,yue);LCD1602_WriteCom(0x80+7); //光标前移一位}if(k1_num==6)//年{nian--;if(nian==-1)nian=99;LCD1602_WriteNYR(3,nian);LCD1602_WriteCom(0x80+4); //光标前移一位}}}}}void main(){LCD1602_Init();while (1){ keyscan () ;if (count==20)//满一秒{count=0;miao++;if (miao==60){miao=0;fen++;if (fen==60){fen=0;shi++;if (shi==24){shi=0;ri++;if (yue==4||yue==6||yue==9||yue==11){if (ri==31){ri=1;yue++;if (yue==13){yue=1;nian++;if (nian==100)nian=0;LCD1602_WriteNYR(3,nian);}LCD1602_WriteNYR(6,yue);}}else if (yue==1||yue==3||yue==5||yue==7||yue==8||yue==10||yue==12){if (ri==32){ri=1;yue++;if (yue==13){yue=1;nian++;if (nian==100)nian=0;LCD1602_WriteNYR(3,nian);}LCD1602_WriteNYR(6,yue);}}else if (yue==2){if (nian%4==0)//公元2000~2099之间的闰年{if (ri==30){ri=1;yue++;if (yue==13){yue=1;nian++;if (nian==100)nian=0;LCD1602_WriteNYR(3,nian);}LCD1602_WriteNYR(6,yue);}}else {if (ri==29){ri=1;yue++;if (yue==13){yue=1;nian++;if (nian==100)nian=0;LCD1602_WriteNYR(3,nian);}LCD1602_WriteNYR(6,yue);}}}LCD1602_WriteNYR(9,ri);}LCD1602_WriteSFM(4,shi);}LCD1602_WriteSFM(7,fen);}LCD1602_WriteSFM(10,miao);}}}void timer0() interrupt 1{  TH0=(65536-50000)/256;TL0=(65536-50000)%256;count++;}

PS:这编辑窗口有问题啊，提交好几次都转成HTML，啧啧啧···