自己寫的電子表程序

該程序已經在實驗板上測試過,絕對正確
至于端口的設置可以改為自己實驗板相應的端口即可

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit rs=P2^6;     //1602設置
sbit lcde=P2^7;
sbit rw=P3^6;
sbit sw1=P3^2;//功能按鍵,按下使對應的秒,分,時處閃爍,以便對時
sbit sw2=P3^3;//對時時候,按下該鍵一次可以使秒,分,時自動加一
sbit sw3=P3^4;//對時時候,按下該鍵一次可以使秒,分,時自動減一
uchar code table[]="2008-10-27";
uchar code table1[]="10-55-00";
uchar num,t,num1;
uchar sec,min,hour,g,s;
void init();
void write_cmd(uchar cmd);
void write_date(uchar date);
void display(uchar add,uchar date);
void delay(uint z)//延時
{
    uint x,y;
    for(x=115;x>0;x--)
        for(y=z;y>0;y--);
}
void init()//初始化
{    sec=50;
    min=55;
    hour=10; 
    write_cmd(0x38);
    write_cmd(0x0C);
    write_cmd(0x06);
    write_cmd(0x80+3);
    for(num=0;num<10;num++)
    {
        write_date(table[num]);
        delay(1);
    }
    write_cmd(0x80+0x40+4);
    for(num=0;num<8;num++)
    {
        write_date(table1[num]);
        delay(1);
    }
    TMOD=0x01;
    TH0=(65536-46080)/256;
    TL0=(65536-46080)%256;
    EA=1;
    ET0=1;
    TR0=1;

}
void write_cmd(uchar cmd)//1602寫命令
{
    
    rs=0;
    rw=0;
    P0=cmd;
    lcde=0;
    delay(1);
    lcde=1;
    delay(1);
    lcde=0;
    delay(1);

}
void write_date(uchar date)//1602寫數據
{
    rs=1;
    rw=0;
    P0=date;
    lcde=0;
    delay(1);
    lcde=1;
    delay(1);
    lcde=0;
    delay(1);

}

void display(uchar add,uchar date)//1602顯示
{
    g=date%10;
    s=date/10;
    write_cmd(0x80+0x40+add);
    write_date(0x30+s);    
    write_date(0x30+g);    
    
}
void keyscan()//按鍵掃描
{
    if(sw1==0)
    {
        delay(5);
        if(sw1==0)
        {
            num1++;
             while(!sw1);
            if(num1==1)
            {
                TR0=0;
                write_cmd(0x80+0x40+11);
                write_cmd(0x0f);
            }
            if(num1==2)
            {
                write_cmd(0x80+0x40+8);
                write_cmd(0x0f);
            }
            if(num1==3)
            {
                write_cmd(0x80+0x40+5);
                write_cmd(0x0f);
            }
            if(num1==4)
            {
                num1=0;
                TR0=1;
                write_cmd(0x0c);
            }
        
        }

    }
    if(num1!=0)
    {
        if(sw2==0)
            {
                delay(5);
                if(sw2==0)
                {    while(!sw2);
                     if(num1==1)
                    {
                        sec++;
                        if(sec==60)
                        sec=0;
                        //write_cmd(0x80+0x40+10);
                        display(10,sec);
                    }
                    if(num1==2)
                    {
                        min++;
                        if(min==60)
                        min=0;
                        //write_cmd(0x80+0x40+10);
                        display(7,min);
                    }    
                    if(num1==3)
                    {
                        hour++;
                        if(hour==24)
                        hour=0;
                        //write_cmd(0x80+0x40+10);
                        display(4,hour);
                    }            
                }
            }
    }
    if(num1!=0)
    {
        if(sw3==0)
            {
                delay(5);
                if(sw3==0)
                {    while(!sw3);
                     if(num1==1)
                    {
                        sec--;
                        if(sec==-1)
                        sec=59;
                        //write_cmd(0x80+0x40+10);
                        display(10,sec);
                    }
                    if(num1==2)
                    {
                        min--;
                        if(min==-1)
                        min=59;
                        //write_cmd(0x80+0x40+10);
                        display(7,min);
                    }    
                    if(num1==3)
                    {
                        hour--;
                        if(hour==-1)
                        hour=23;
                        //write_cmd(0x80+0x40+10);
                        display(4,hour);
                    }            
                }
            }
    }
}  
void main()
{
    init();
    while(1)
    {    
        keyscan();
        if(t==20)
        {
             t=0;
            sec++;
            if(sec==60)
            {
                sec=0;
                min++;
                if(min==60)
                {
                     min=0;
                    hour++;
                    if(hour==24)
                    {
                        hour=0;
                    }
                     display(4,hour);
                }
                 display(7,min);
            }
        
          display(10,sec);
        }
                
    }
}
void timer0() interrupt 1
{
      TH0=(65536-46080)/256;
    TL0=(65536-46080)%256;
    t++;
}