液晶显示的时钟

液晶显示的时钟（初级版，不包括年月日）

#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int

sbit lcden = P2^6;//这几个端口要和硬件电路先联系  
sbit lcdrw = P2^5;
sbit lcdrs = P2^4;

sbit dula = P3^1;
sbit wela = P3^2;
sbit key1 = P3^5;
sbit key2 = P3^6;
sbit key3 = P3^7;

uchar code table[]="   2013-10-01";
uchar code table1[]="    23:59:53";
uchar miao,fen,shi;
uint num,key1num;

void delay(uint z)
{
    uint x,y;
    for(x= z;x>0;x--)
        for(y =110;y>0;y--);
}

void write_com(uchar com)//写命令函数
{
    lcdrs = 0;//使能端置0低脉冲写指令，高脉冲写数据   
    _nop_();//推迟一个机器周期  

    lcdrw = 0;//低电平往里面写数据
    P0= com;

    delay(5);
    lcden = 1;//使能端给一个高电平读走数据
    delay(5);
    lcden = 0;//使能端给一个低电平回位  

}

void write_date(uchar date)//写数据函数
{
    lcdrs = 1;//使能端置0低脉冲写指令，高脉冲写数据
    _nop_();//推迟一个机器周期

    lcdrw = 0;
    P0= date;

    delay(5);
    lcden = 1;
    delay(5);
    lcden = 0;

}

void init()
{
    dula = 0;
    wela = 0;//关闭数码管

    fen = 59;
    miao = 53;
    shi = 23;
    lcden = 0;
    write_com(0x38);//显示模式设置
    write_com(0x0c);//显示开关以及光标设置
    write_com(0x06);
    write_com(0x80);

    for(num=0;num<13; num++)
        {
        write_date(table[num]);
        delay(5);
        }

    write_com(0x80+0x40);//设置数据指针
    for(num=0;num<12; num++)
    {
        write_date(table1[num]);
        delay(5);
    }

    TMOD = 0x02;
    TH0 = 6;
    TL0 = 6;
    EA = 1;
    ET0 = 1;
    TR0 = 1;

    key1num = 0;

}

void write_sfm(uchar date,uchar addr)
{
    uchar gw,sw;
    gw = date%10;
    sw = date/10;
    write_com(0x80+0x40+addr);
    write_date(0x30+sw);
    write_date(0x30+gw);

}

void key_scan()
{
        P3 = 0xff;
        if(key1==0)
        {
            delay(5);
            if(key1 == 0)
            {    
            
                while(!key1);
                key1num++;
                if(key1num==1)
                {
                    TR0 = 0;
                    write_com(0x80+0x40+11);
                    write_com(0x0f);
                }
                if(key1num == 2)
                {
                    write_com(0x80+0x40+8);
                    write_com(0x0f);
                }
                if(key1num == 3)
                {
                    write_com(0x80+0x40+5);
                    write_com(0x0f);
                }
                if(key1num == 4)
                {
                    key1num=0;
                    TR0 = 1;
                    write_com(0x0c);
                }
            }
        }
        if(key2==0)
        {
            delay(5);
            if(key2==0)
            {
                while(!key2);
                if(key1num!=0)
                {
                    switch(key1num)
                    {
                        case 1:
                        {
                            miao++;
                            if(miao == 60)
                            {
                                miao = 0;
                            }
                        
                            write_sfm(miao,10);
                            write_com(0x80+0x40+11);
                            break;
                        }
                        case 2:
                        {
                            fen++;
                            if(fen == 60)
                            {
                                fen = 0;
                            }
                            write_sfm(fen,7);
                            write_com(0x80+0x40+8);
                            break;
                        }
                        case 3:
                        {
                            shi++;
                            if(shi == 24)
                            {
                                shi = 0;
                            }
                            write_sfm(shi,4);
                            write_com(0x80+0x40+5);
                            break;
                        }
            
                        }
                    }
             }
        }

        if(key3==0)
        {
            delay(5);
            if(key3==0)
            {
                while(!key3);
                if(key1num!=0)
                {
                    switch(key1num)
                    {
                        case 1:
                        {
                            miao--;
                            if(miao == 0)
                            {
                                miao = 60;
                            }
                        
                            write_sfm(miao,10);
                            write_com(0x80+0x40+11);
                            break;
                        }
                        case 2:
                        {
                            fen--;
                            if(fen == -1)
                            {
                                fen = 59;
                            }
                            write_sfm(fen,7);
                            write_com(0x80+0x40+8);
                            break;
                        }
                        case 3:
                        {
                            shi--;
                            if(shi == -1)
                            {
                                shi = 23;
                            }
                            write_sfm(shi,4);
                            write_com(0x80+0x40+5);
                            break;
                        }
            
                    }
                }
             }
        }
}

void main()
{
    init();
    while(1)
    {
        key_scan();
    }
}

void T0_timer() interrupt 1
{
        num++;        
            if(num ==4000)
        {        
            num =0;
            miao++;
            
            if(miao==60)
            {
                miao = 0;
                fen++;
                if(fen == 60)
                {
                    fen = 0;
                    shi++;
                    if(shi == 24)
                    {
                        shi =0;
                    }
                    write_sfm(shi,4);
                }
                write_sfm(fen,7);
            }
            write_sfm(miao,10);
        }
}

液晶显示时钟（高级版,包括年月日还有星期）

#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int

sbit lcden = P2^6;//这几个端口要和硬件电路先联系  
sbit lcdrw = P2^5;
sbit lcdrs = P2^4;

sbit dula = P3^1;
sbit wela = P3^2;
sbit key1 = P3^5;
sbit key2 = P3^6;
sbit key3 = P3^7;

uchar code table[]="  2821-12-31Sun";
uchar code table1[]="    23:59:58";
uchar code table2[] ={"MonTueWedTurFriSatSun"};
uchar miao,fen,shi,day,month,xi;
uint year;
uint num,key1num;

void delay(uint z)
{
    uint x,y;
    for(x= z;x>0;x--)
        for(y =110;y>0;y--);
}

void write_com(uchar com)//写命令函数
{
    lcdrs = 0;//使能端置0低脉冲写指令，高脉冲写数据   
    _nop_();//推迟一个机器周期  

    lcdrw = 0;//低电平往里面写数据
    P0= com;

    delay(5);
    lcden = 1;//使能端给一个高电平读走数据
    delay(5);
    lcden = 0;//使能端给一个低电平回位  

}

void write_date(uchar date)//写数据函数
{
    lcdrs = 1;//使能端置0低脉冲写指令，高脉冲写数据
    _nop_();//推迟一个机器周期

    lcdrw = 0;
    P0= date;

    delay(5);
    lcden = 1;
    delay(5);
    lcden = 0;

}

void init()
{
    dula = 0;
    wela = 0;//关闭数码管

    fen = 59;
    miao = 58;
    shi = 23;
    lcden = 0;
    write_com(0x38);//显示模式设置
    write_com(0x0c);//显示开关以及光标设置
    write_com(0x06);
    write_com(0x80);

    for(num=0;num<15; num++)
        {
        write_date(table[num]);
        delay(5);
        }

    write_com(0x80+0x40);//设置数据指针
    for(num=0;num<12; num++)
    {
        write_date(table1[num]);
        delay(5);
    }

    TMOD = 0x02;
    TH0 = 6;
    TL0 = 6;
    EA = 1;
    ET0 = 1;
    TR0 = 1;

    key1num = 0;
    year =2821;
    month = 12;
    day=31;
    xi=6;


}

void write_sfm(uchar date,uchar addr)
{
    uchar gw,sw;
    gw = date%10;
    sw = date/10;
    write_com(0x80+0x40+addr);
    write_date(0x30+sw);
    write_date(0x30+gw);

}
void write_nyr(uchar date,uchar addr)
{
    uchar gw,sw;
    gw = date%10;
    sw = date/10;
    write_com(0x80+addr);
    write_com(0x0f);
    write_date(0x30+sw);
    write_date(0x30+gw);

}
void write_nnn(uint date,uchar addr)//这里形式参数也要是uint型才能
{
    uchar gw,sw,bw,qw;
    gw = date%10;
    sw = date%100/10;
    bw = date%1000/100;
    qw = date/1000;

    write_com(0x80+addr);
    write_date(0x30+qw);
    write_date(0x30+bw);
    write_date(0x30+sw);
    write_date(0x30+gw);

}
void write_xqi(uchar date,uchar addr)
{

    uchar i,pchar[3];
    for(i=0;i<3;i++)
    pchar[i] = table2[3*date+i];
    
    write_com(0x80+addr);
    for(i=0;i<3;i++)
    {
    write_date(pchar[i]);
    }
}

void key_scan()
{
        P3 = 0xff;
        if(key1==0)
        {
            delay(5);
            if(key1 == 0)
            {    
            
                while(!key1);
                key1num++;
                if(key1num==1)
                {
                    TR0 = 0;
                    write_com(0x80+0x40+11);
                    write_com(0x0f);
                }
                if(key1num == 2)
                {
                    write_com(0x80+0x40+8);
                    write_com(0x0f);
                }
                if(key1num == 3)
                {
                    write_com(0x80+0x40+5);
                    write_com(0x0f);
                }
                if(key1num == 4)
                {
                    write_com(0x80+11);
                    write_com(0x0f);
                }
                if(key1num ==5)
                {
                    write_com(0x80+8);
                    write_com(0x0f);
                }
                if(key1num == 6)
                {
                    write_com(0x80+5);
                    write_com(0x0f);
                
                }
                if(key1num == 7)
                {
                    write_com(0x80+13);
                    write_com(0x0f);
                }
                if(key1num == 8)
                {
                    key1num =0;
                    write_com(0x0c);
                    TR0 = 1;
                }
            }
        }
        if(key2==0)
        {
            delay(5);
            if(key2==0)
            {
                while(!key2);
                if(key1num!=0)
                {
                    switch(key1num)
                    {
                        case 1:
                        {
                            miao++;
                            if(miao == 60)
                            {
                                miao = 0;
                            }
                        
                            write_sfm(miao,10);
                            write_com(0x80+0x40+11);
                            break;
                        }
                        case 2:
                        {
                            fen++;
                            if(fen == 60)
                            {
                                fen = 0;
                            }
                            write_sfm(fen,7);
                            write_com(0x80+0x40+8);
                            break;
                        }
                        case 3:
                        {
                            shi++;
                            if(shi == 24)
                            {
                                shi = 0;
                            }
                            write_sfm(shi,4);
                            write_com(0x80+0x40+5);
                            break;
                        }
                        case 4:
                        {    
                        
                            day++;
                            switch(month)
                            {
                                case 1:
                                case 3:
                                case 5:
                                case 7:
                                case 8:
                                case 10:
                                case 12:
                                {
                                if(day == 32)
                                    day =1;
                                }
                                    break;
                                case 4:
                                case 6:
                                case 9:
                                case 11:
                                {
                                    if(day == 31)
                                    day =1;
                                }
                                break;
                                case 2:
                                {
                                    if((year%4==0&&year%100!=0)||(year%400==0))//闰年
                                    {
                                        if(day ==30)
                                            day = 1;
                                    }
                                    else
                                     {
                                        if(day == 29)
                                            day = 1;
                                    }
                                    
                                }
                                break;

                            }
                        
                            write_nyr(day,10);
                            write_com(0x0f);
                            write_com(0x80+0x11);
                        
                        }
                        break;
                        case 5:
                        {
                            month ++;
                            if(month==13)
                                {
                                month =1;
                                }
                            write_com(0x0f);
                            write_nyr(month,7);
                            write_com(0x80+0x8);
                        }
                        break;
                        case 6:
                        {
                            year ++;
                            if(year==9999)
                                year = 1000;
                            write_com(0x0f);
                            write_nnn(year,2);
                            write_com(0x80+0x5);
                        }
                        break;
                        case 7:
                        {
                            xi ++;
                            if(xi == 7)
                                xi = 0;
                            write_xqi(xi,12);
                            write_com(0x0f);
                            write_com(0x80+0x13);
                        }
                        break;
                    
                        }
                    }
             }
        }

        if(key3==0)
        {
            delay(5);
            if(key3==0)
            {
                while(!key3);
                if(key1num!=0)
                {
                    switch(key1num)
                    {
                        case 1:
                        {
                            miao--;
                            if(miao == 0)
                            {
                                miao = 60;
                            }
                        
                            write_sfm(miao,10);
                            write_com(0x80+0x40+11);
                            break;
                        }
                        case 2:
                        {
                            fen--;
                            if(fen == -1)
                            {
                                fen = 59;
                            }
                            write_sfm(fen,7);
                            write_com(0x80+0x40+8);
                            break;
                        }
                        case 3:
                        {
                            shi--;
                            if(shi == -1)
                            {
                                shi = 23;
                            }
                            write_sfm(shi,4);
                            write_com(0x80+0x40+5);
                            break;
                        }
                        case 4:
                        {
                            day--;
                            switch(month)
                            {
                                case 1:
                                case 3:
                                case 5:
                                case 7:
                                case 8:
                                case 10:
                                case 12:
                                {
                                if(day == 0)
                                    day =31;
                                }
                                    break;
                                case 4:
                                case 6:
                                case 9:
                                case 11:
                                {
                                    if(day == 0)
                                    day =30;
                                }
                                break;
                                case 2:
                                {
                                    if((year%4==0&&year%100!=0)||(year%400==0))//闰年
                                    {
                                        if(day ==0)
                                            day = 29;
                                    }
                                    else
                                     {
                                        if(day == 0)
                                            day = 28;
                                    }
                                    
                                }
                                break;

                            }
                            write_com(0x0f);
                            write_nyr(day,10);
                        
                            write_com(0x80+0x11);
                        
                        }
                        break;
                        case 5:
                        {
                            month --;
                            if(month==0)
                                {
                                month =12;
                                }
                            write_com(0x0f);
                            write_nyr(month,7);
                            write_com(0x80+0x8);
                        }
                        break;
                        case 6:
                        {
                            year --;
                            if(year==9999)
                                year = 1000;
                            write_com(0x0f);
                            write_nnn(year,2);
                            write_com(0x80+0x5);
                        }
                        break;
                        case 7:
                        {
                            //write_com(0x0f);
                            xi--;
                            if(xi == -1)
                                xi = 6;
                            write_xqi(xi,12);
                            //write_com(0x80+0x13);
                        }
                        break;
                    }
                }
             }
        }
}

void main()
{
    init();
    while(1)
    {
        key_scan();
    }
}

void T0_timer() interrupt 1
{
        num++;        
        if(num ==4000)
        {        
            num =0;
            miao++;
            if(miao==60)
            {
                miao = 0;
                fen++;
                if(fen == 60)
                {
                    fen = 0;
                    shi++;
                    if(shi == 24)
                    {
                        shi =0;
                        day++;
                        xi++;//xi 这个变量用来表示星期数
                        if(xi==7)
                        {
                            xi=0;
                        }
                        switch(month)
                        {
                            case 1:
                            case 3:
                            case 5:
                            case 7:
                            case 8:
                            case 10:
                            case 12:
                            if(day ==32)
                            {
                                day =1;
                                month ++;
                            
                                if(month ==13)
                                {
                                    month =1;
                                    year ++;
                                    write_nnn(year,2);
                                }
                                write_nyr(month,7);
                            }
                            break;
                            case 4:
                            case 6:
                            case 9:
                            case 11:
                            if(day ==31)
                                {
                                    day =1;
                                    month++;
                                    write_nyr(month,7);
                                }

                            break;
                            case 2:
                                if((year%4==0&&year%100!=0)||(year%400==0))//闰年
                                {
                                    if(day==30)
                                    {
                                        day=1;
                                        month++;
                                        write_nyr(month,7);
                                    }
                                }
                                else
                                {
                                    if(day==29)
                                    {
                                        day=1;
                                        month++;
                                        write_nyr(month,7);
                                    }
                                }
                                break;



                        }
                        write_nyr(day,10);
                        write_xqi(xi,12);
                    }
                    write_sfm(shi,4);
                }
                write_sfm(fen,7);
            }
            write_sfm(miao,10);
        }
}

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