数据采集.c

采用C51单片机结合ADC0809模数转换器

#include<reg52.h>
#include<intrins.h>
#include <stdlib.h>
#include <absacc.h>
int code0[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xc6};
sbit p30=P3^0;sbit p31=P3^1;sbit p32=P3^2;sbit p33=P3^3;sbit p34=P3^4;sbit p35=P3^5;sbit p36=P3^6;sbit p37=P3^7;
void delay(int k)
{while(k--);}

void display(unsigned	char n1,n2,n3,n4)
{int i;for(i=5;i>0;i--)
{ P1=code0[0];
  P2=0x01;delay(5);P1=code0[n1];delay(500);
  P2=0x02;delay(5);P1=code0[n2];delay(500);
  P2=0x04;delay(5);P1=code0[n3];delay(500);
  P2=0x08;delay(5);P1=code0[n4];delay(500);
  P2=0;}}
main()
{unsigned	char	 n1=0,n2=0,n3=0,n4=0; 
int s=0;int count=0;P0=0xff;	 
for(;;)
{if(p33==0) count++;if(count==5)count=0;
if(count==1){P3=0;p37=1;delay(100);p37=0;p36=1;s=P0;n2=s/100;n3=s%100/10;n4=s%10;delay(100); delay(100);p33=1;}
if(count==2){P3=1;p37=1;delay(100);p37=0;p36=1;s=P0;n2=s/100;n3=s%100/10;n4=s%10;delay(100); delay(100);p33=1;}
if(count==3){P3=2;p37=1;delay(100);p37=0;p36=1;s=P0;n2=s/100;n3=s%100/10;n4=s%10;delay(100); delay(100);p33=1;}
if(count==4){P3=3;p37=1;delay(100);p37=0;p36=1;s=P0;n2=s/100;n3=s%100/10;n4=s%10;delay(100); delay(100);p33=1;}
display(n1,n2,n3,n4);}}