kongsu2051.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<AT892051.H>
#define LLL 3.666667     /*每次脉冲小车移动的距离*/

unsigned int yichucishu=0,i;
unsigned char sudu=0;

void delay(void);

void jiance(void) interrupt 0
{
double shijian,linshi;
unsigned int yichu;
 yichu=yichucishu;
 TR0=0;
 TH0=0xF4;
 TL0=0x48;
 TR0=1;
 if(yichucishu>0)
  {shijian=yichucishu*3;
   linshi=LLL*1000/shijian;
	sudu=linshi;
	yichucishu=0;
	}
}

void timer0(void) interrupt 1
{TH0=0xF4;
 TL0=0x48;
 yichucishu++;
} 

main()
{
EA=1;

TMOD=0x21;
SCON=0x50;
TH1=0xE8;
TL1=0xE8;

EX0=1;
PX0=1;
IT0=1;

ET0=1;
//TH0=0xE0;        /*TH0=0xE0;TL0=0x18;   1110 0000 11000 定时3ms*/         
//TL0=0x18;        /* 定时3ms   晶振4MHz */
TH0=0xF4;
TL0=0x48;

TR1=1;
for(;;)
 {if(sudu!=0)
  {SBUF=sudu;
   while(!TI);
   TI=0;
   for(i=0;i<50;i++)
    delay();
   }
  }
}

void delay()
{unsigned int i,j;
 for(i=0;i<10;i++)
  for(j=0;j<120;j++)
  ;
}