#include <REGX51.H>
#include "type.h"
#include "config.h"

sbit ST=P3^0;       
sbit OE=P3^1;
sbit EOC=P3^2;
sbit CLK=P3^4;

#define AD_VALUE P0

uchar ad(void)
{
  P3_3 = 1;
  //P3_3 = ~P3_3;
  uchar Get_AD;
  ST=0;
  ST=1;
  ST=0;
  while(EOC == 0);
  OE=1;
  Get_AD=AD_VALUE;
  OE=0;
  return Get_AD;
}