大家来看看这个程序

只看该作者 · 2011-9-29 16:31

#include<AT89X51.H>
unsigned char  code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00};
unsigned char  code dispbitcode[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char  dispbuf[]={10,10,10,10,0,0,0,0};
unsigned  int  temp ;
unsigned  char i;
unsigned char dispcount=0;
unsigned char getdata;
sbit ST=P3^0;
sbit OE=P3^1;
sbit EOC=P3^2;
sbit CLK=P3^3;
void  main(void)
{


  ST=0;
  OE=0;
  ET0=1;
  ET1=1;
  EA=1;
  TMOD=0x12;
  TH0=216;
  TL0=216;
  TH1=(65535-4000)/256;
  TL1=(65535-4000)%256;
  TR0=1;
  TR1=1;

  ST=1;

  ST=0;
  while(1)
  {
if(EOC==1)
{

OE=1;
getdata=P0;
  OE=0;
temp=getdata*235;
temp=temp/128;
i=0;
dispbuf[0]=0;
dispbuf[1]=0;
  dispbuf[2]=0;
  dispbuf[3]=10;
  dispbuf[4]=10;
  dispbuf[5]=10;
dispbuf[6]=10;
  dispbuf[7]=10;
  while(temp/10)
  {
dispbuf[i]=temp%10;
temp=temp/10;
i++;
  }
  dispbuf[i]=temp;


   ST=1;

   ST=0;
}
}
}
  void t0(void) interrupt 1 using 0
{
  CLK=~CLK;
}

   void t1(void) interrupt 3 using 0
  {
TH1=(65535-4000)/256;
  TL1=(65535-4000)%256;
  P1=dispcode[dispbuf[dispcount]];
  P2=dispbitcode[dispcount];
  if(dispcount==1)
  {
P1=P1|0x80;
  }
  dispcount++;
  if(dispcount==8)
  {
  dispcount==0 ;
  }
  }
  数码管显示0000没有显示电压值，还望高手指点一下``