#include <reg51.h>
#include <math.h>
#define uchar unsigned char
#define uint unsigned int
#define ON 0
#define OFF 1
sbit PWM=P3^5;
sbit MP=P3^4;
bit FLAG=0;
uchar code dispbit[6]={0x20,0x10,0x08,0x04,0x02,0x01};
 
uchar code seg[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};
					//0,1,2,3,4,5,6,7,8,9
uchar disbuf[6]={0,0,0,0,10,10};
uint temp[6];
uint discount=0;
uint timecount=0;//定時的次數
uint T0count=0;
uint hus=0;
uint k=60;
uint Vc;
uint Vs;
uint tm=3000;
uint x;
void t0_serv() interrupt 1
{ T0count++;
}
void t1_serv() interrupt 3
{ 
  PWM=1;
  TH1=(65536-tm)/256;
  TL1=(65536-tm)%256;
  hus++;
  if(hus==tm)
   { PWM=0;
     TH1=(25536+tm)/256;
     TL1=(25536+tm)%256;
   
   } 
  timecount++;
    if(timecount==250) 
    {  
	   //FLAG=1;
	   TR0=0;
	   hus=0;
	   timecount=0;
	   Vc=T0count*65536+TH0*256+TL0;
	   Vs=144;
	   if(abs(Vc-Vs)>5)
	    { tm=abs(k*(Vc-Vs));
		  T0count=0;
		  TR0=1;
		  TR1=1;
		  ET0=1;
		  ET1=1;
		  EA=1;
		}
	  FLAG=1;
	  TR0=0;
	  timecount=0;
	  }
	P0=dispbit[discount];	 
	P1=seg[disbuf[discount]];	 
	discount++;
	  if(discount==6)
	   { discount=0;
	   }
}	   
void main()
{  uint i;
   TMOD=0x15;
   TH0=0;
   TL0=0;
   TH1=(65536-tm)/256;
   TL1=(65536-tm)%256;
   TR0=1;
   TR1=1;
   ET0=1;
   ET1=1;
   EA=1;
   while(1)
  { if(FLAG==1)
   { FLAG=0;
	 x=T0count*65536+TH0*256+TL0;
	  for(i=0;i<6;i++)
	  {temp[i]=0;
	  }
	i=0;
	while(x/10)
	 { 
   	   temp[i]=x%10;
	   x=x/10;
	   i++;
	  }
	temp[i]=x;
	    for(i=0;i<6;i++)
	  {	
	    disbuf[i]=temp[i];
	   } 
	
	   timecount=0;
	   T0count=0;
	   TH0=0;
       TL0=0;
	   T0count=0;
	   TR0=1;
      
     }
   }
  
}