main.c

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#include <reg51.h>
#define uchar unsigned char
#define schar  unsigned char
#define uint  unsigned int
sbit P3_5= P1^1;
sbit P1_2= P1^2;//定义信号引脚 
    char DATA_7SEG [11]={0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90,0XFF,};//0~9
  uchar hour=0,min=0,sec=0;
  uchar deda=0;
  schar t_hour=8;
  schar t_min=30;
  bit d_05s=0;
  uchar set=0;
  uchar m=0;
  uchar syh,sym;
  void delay(uint k);
  void conv();
  void p_out();
  void dirve (schar hm1,uchar hm2);
  void tdata1(schar hm3);
  void tdata2(schar hm4);
  void conv()
      {
	   if (deda<=100)d_05s=1;
	   else d_05s=0;
	   if (deda>=201){sec++;deda=0;}
	   if (sec==60){min++;sec=0;}
       if (min==60){hour++;min=0;}
	   if (hour==24){hour=0;}	  	  
	  }
         

	  void delay (uint k)
	  {
	   uint i,j;
	   for(i=0;i<k;i++){
	                    for(j=0;j<121;j++){;}}
	  	           	  }


       void drive(schar hm1,uchar hm2) 
       {
          if(hm1/10>=1)
          {tdata1(hm1); P1=0xef;delay(1);}
          if(d_05s==1)
            {SBUF=DATA_7SEG[hm1%10]&0x7F;
            
            while(TI==0);
            TI=0;
            P1=0xdf;delay(1);}

			else
			{tdata2(hm1);P1=0xdf;delay(1);}
             tdata1(hm2);P1=0xbf;delay(1);
			 tdata2(hm2);P1=0x7f;delay(1);}

             void dispsy()
			 {
			 if(min<=t_min)
			    {
				 sym=t_min-min;
				 syh=t_hour-hour;
				}
			 else {sym=(60-min+t_min);syh=t_hour-hour-1;}
			 drive(syh,sym);
			 
			 }



void time()
{ 
    conv();
	if(sec%5<=2)
	{
	 P3_5=1;drive(hour,min);
	}
	else {
	      P3_5=0;dispsy();
	     }
   P_out();
   }




   void init_timer()
   {
    TMOD=0x01;
	TH0=-(5221/256);
	TL0=-(5221%256);
    IE=0x82;
	TR0=1;
     }
 

	 void scan_key()
	 {
	  delay(1);
	  if(P1_2==0)set++;
	  if(set>=2)set=0;
	  while(P1_2==0);
	  }
	  void zd(void) interrupt 1
     { TH0=-(5221/256);
	   TL0=_(5221%256);
	   deda++;
	  }

	     void time1_adj()
		 {
		  if(P1_1==0)delay(1);
		  if(P1_1==0)t_hour--;
		  if(t_hour<0)t_hour=23;
          for(m=0;m<100;m++)
		  {
		  drive(t_hour,t_min);
		  
		  }
		  if(P1_0==0)delay(1);
		  if(P1_0==0)t_min=t_min-1;
		  if(t_min<=0)t_min=60;
		  for(m=0;m<100;m++)
		     {
			  drive(t_hour,t_min);
			 }		 
		 
		 }
		    void tdata1(schar hm3)
			 {
			  SUB=DATA_7SEG[hm3/10];
			  while(TI==0);
			  TI=0;	 
			 }
			void tdata2(schar hm4)
			 {
			  SUB=DATA_7SEG[hm4%10];
			  while(TI==0);
			  TI=0;	 
			 }




			 ///////
			 void P_out()
			 {
			  if (hour>=t_hour&&min>=t_min)
			  {TR0=0;EA=0;P3_7=0;
			   dirve(t_hour,t_min);
			  }
			  else P3_7=1;
			 
			 }
			 //////////////////////
			 void main()
			 {
			  init_timer();
			  while(1)
			  {
			   if(P1_2==0)scan_key();
			   switch(set)
			   {case 0:time();break;
			    case 1:time1_adj();break;
				default:break;
			   }
			  
			  
			  }
			 
			 
			 }