#C 程序是用来做数字电压表的哪位大神帮着找找错误吧谢啦

只看该作者 · 2013-5-26 12:14

#include "reg51.h"
#include "intrins.h"
#define ad_con    P2
#define addata    P0
#define Disdata    P1
#define uchar unsigned char
#define unit unsigned int
sbit    ALE=P2^3;
sbit    START=P2^4;
sbit    OE=P2^5;
sbit    EOC=P3^7;
uchar code dis_7[11]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77};
char code  scan_con[4]={0xFE,0xFD,0xFB,0xF7};
char data  ad_data[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
char data  dis[5]={0x00,0x00,0x00,0x00,0x00};
//
delay1ms(unit t)
{
unit i,j;
for(i=0;i<t;i++)
for(j=0;j<120;j++)
;
}
//
scan()
{
uchar k,n;
unit h;
dis[3]=0x00;
for(n=0;n<8;n++)
{
dis[2]=ad_data[n]/100;
dis[4]=ad_data[n]%100;
dis[1]=dis[4]/10;
dis[0]=dis[4]%10;
for(h=0;h<500;h++)
{
  for(k=0;k<4;k++)
  {
Disdata=dis_7[dis[k]];P3=scan_con[k];delay1ms(1);P3=0xFF;
}
  }
  dis[3]++;
}
}
//
test()
{
char m;
char s=0x00;
ad_con=s;
for(m=0;m<8;m++)
{
  ALE=1;_nop_();_nop_();ALE=0;
  START=1;_nop_();_nop_();START=0;
  _nop_();_nop_();_nop_();_nop_();
  while(EOC==0);
  OE=1;ad_data[m]=addata;OE=0;s++;ad_con=s;
}
ad_con=0x00;
}
//
main()
{
P0=0xFF;
P2=0x00;
P1=0xFF;
P3=0xFF;
while(1)
{
  scan();
  test();
}
}