00.c

基于DA1302的电子实时数字钟,具有显示日期,时间,星期等功能.

#include<reg51.h>
#define uchar unsigned char 
uchar j,k,i,a,A1,A2,A3,A4,A5,A6,second,min,hour;
sbit key0=P1^0;
sbit key1=P1^3;
sbit key2=P1^6;
bit L=0;//长溢出标志位
uchar code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,
                        0x80,0x90};//编码0~9
uchar code select[]={0x01,0x02,0x04,0x08,0x10,0x20};//位选通
uchar time[3];
uchar con=0;
uchar con1=0;
uchar con2=0;
void delay(uchar i)//延时
{
  for(j=i;j>0;j--)
    for(k=125;k>0;k--);
}
void keyscan(void)//键盘扫描
{EA=0;
 
   if(!key0)
     { delay(10);
     while(!key0);
     con++;TR0=0;ET0=0;     
    }
    if(con>=3)
    con=0;TR0=1;ET0=1;
   	if(con!=0)
	 {if(!key1)
	  {delay(10);
	 while(!key1);
	 {time[con]++;
	  if(con==2)
      con1=24;else con1=60;
	  if(time[con]>con1)
	    {time[con]=0;}
      }
	 }
	 }
	  if(con!=0)
      {if(!key2)
	    {delay(10);
	   while(!key2);
	   {time[con]--;
	    if(con==2)
		con2=23;else con2=59;
		if(time[con]<0)
		{time[con]=con2;}
	   }
	  }
	 }
  EA=1;
}       
void display(uchar sh_c,uchar g_c,uchar sh_b,uchar g_b,uchar sh_a,uchar g_a)//显示部分
{  P0=table[sh_c];
   P3=select[0];
   delay(5);
   P3=0;
  
   P0=table[g_c];
   P3=select[1]; 
   delay(5);
   P3=0;
     
   P0=table[sh_b];
   P3=select[2];
   delay(5);
   P3=0;

   P0=table[g_b];
   P3=select[3];
   delay(5);
   P3=0;
   
   P0=table[sh_a];
   P3=select[4];
   delay(5);
   P3=0;

   P0=table[g_a];
   P3=select[5];
   delay(5);
   P3=0;
}

void main()
  {TMOD=0x01;TH0=0x03;TL0=0xb0;
   TR0=1;
   ET0=1;
   EA=1;
   time[0]=00;
   time[1]=00;
   time[2]=12;
   A1=time[0]/10;
   A2=time[0]%10;
   A3=time[1]/10;
   A4=time[1]%10;
   A5=time[2]/10;
   A6=time[2]%10;
   display(A1,A2,A3,A4,A5,A6);
   while(1)
       {keyscan();
	    if(L)
        {
		 L=0;
		 time[0]++;
          if(time[0]==60)
          {time[0]=0;time[1]++;
           {if(time[1]==60)
            { time[1]=0;time[2]++;
			 {if(time[2]==24)
			  time[2]=0;
			  }
			}
          }
		 }
		 }
         A1=time[0]/10;
         A2=time[0]%10;
         A3=time[1]/10;
         A4=time[1]%10;
		 A5=time[2]/10;
		 A6=time[2]%10;
         { display(A1,A2,A3,A4,A5,A6);};
         }

    }
 void t0(void) interrupt 1//1S延时
{ static uchar t;
  TF0=0;
  t++;
  if(t==11)
  {t=0;L=1;
  }
 }