jieshou.c

本人学习单片机一年多时间厚参加全国电子设计大赛的程序以及赛前练习的程序。

#include<reg51.h>

sbit P1_0=P1^0;
sbit P1_1=P1^1;
sbit P1_2=P1^2;
sbit P1_3=P1^3;

unsigned int yichu,x,gao,di,gaol,dil;
unsigned char th,tl,sudu;
unsigned char code zhankongbi[2][9]={{0xFC,0x18},{0xF8,0x30},{0xF4,0x48},{0xF0,0x60},{0xEC,0x78},{0xE8,0x90},{0xE4,0xA8},{0xE0,0xC0},{}}

void jieshou(void) interrupt 4
{if(RI==1)
 {RI=0;
  sudu=SBUF;
  }
} 

void timer0(void) interrupt 1
{yichu++;
 if(yichu==1)
 {yichu=0;
  x++;
  if(P1_3==0)
   P1_3=1;
  else
   P1_3=0;
  if(x%2==1)
  {th=gao/256;
   tl=gao%256;
	}
  else
  {th=di/256;
   tl=di%256;
	}
 }
 TH0=th;
 TL0=tl;
}

main()
{P1_0=0;
 P1_1=0;
 P1_2=0;
 P1_3=0;

 EA=1;
 ET0=1;
 TMOD=0x21;
 SCON=0x50;
 TH0=0xF4;    //2ms
 TL0=0x48;
 TR0=1;
 TH1=0xE8;
 TL1=0xE8;
 TR1=1;
 for(;;)
 {if(sudu>10)
  ;}
}