原创 ADC0832模数转换proteus仿真程序

https://static.assets-stash.eet-china.com/album/old-resources/2009/5/14/3233c19b-f256-48a5-aff2-c5bda5bd06ed.rar#include <reg51.h>

sbit CLK = P1^0;
sbit DI = P1^1;
sbit DO = P1^3;
sbit CS = P1^2;

unsigned int adval;
code unsigned char tab[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,
                               0x82,0xf8,0x80,0x90,0xff}; //共阳数码管段码

void delay1ms()
{
 unsigned char i;
 for(i=124;i>0;i--);  //延时124*8+10=1002us
}

void LED_display(int date)  //显示4位数
{
 P2=0x01;     //P1.0=0，选通第一位
 P0=tab[date/1000];  //取出千位，查表，输出
 delay1ms();
 P0=0xff;        //消隐

 P2=0x02;     //P1.1=0,选通第二位
 P0=tab[date%1000/100];
 delay1ms();
 P0=0xff;       //消隐

 P2=0x04;     //P1.3=0,选通第三位
 P0=tab[date%100/10];
 delay1ms();
 P0=0xff;         //消隐

 P2=0x08;     //P1.3=0,选通第四位
 P0=tab[date%10];
 delay1ms();
 P0=0xff;       //消隐
}

unsigned int ad ()
{
  unsigned char i;
  CS="0";
  CLK="0";
  CLK="1";
  DI="1";

  CLK="0";
  CLK="1";
  DI="1";

  CLK="0";
  CLK="1";
  DI="0";

  CLK="1";
  CLK="0";

  for (i=0;i<16;i++)
   {
      CLK="1";
      CLK="0";
      if (DO)
         adval= (adval >>1)| 0x80;
      else
         adval=(adval>>1)|0x00;
   }
 
   CS="1";
   return (adval);

}
void main ()
{
  while (1)
    {
     ad ();
     LED_display(adval) ;

    }
}