ad.c

STC单片机程序主要完成电压采集和AD过程

#include<reg51.h>
sfr ADC_CONTR =0xc5;
sfr ADC_DATA=0xc6;
sfr ADC_LOW2=0xbe;
sfr P1M0=0x91;
sfr P1M1=0x92;
sbit P1_1=P1^1;
sbit P2_7=P2^7;
sbit P2_2=P2^2;
sbit P2_6=P2^6;

int i=0,j=0,k=0,l=0,h=0,g=0;
int testbit;
int n;
int xbit,x;
int a[10]={0x03,0x9f,0x25,0x0d,0x99,0x49,0x41,0x1f,0x01,0x09};
int b[6]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb};


delay()
{int n;
	for(n=0;n<1200;n++)
;}

 


sendout(int c)
   {
testbit=0x1;
n=0;
for (;n<=7;n++)
	{if ((testbit&c)!=0)
	P2_2=1;
	else P2_2=0;
	P2_6=1;
	P2_6=0;
	
	testbit=testbit<<1;
	 	}   
 }             



 
 
 main()
 {int  N=0;
 ADC_CONTR=ADC_CONTR | 0x80;

 delay();

 P1M0=0x01;
 P1M1=0x01;

 ADC_CONTR=ADC_CONTR | 0x08;

 while((ADC_CONTR & 0x10)==0)
 ;

 ADC_CONTR=ADC_CONTR & 0x00;

 N=ADC_DATA;

ES=0;
TMOD=0x20;
SCON=0x50;
TH1=0xFB;
TL1=0xFB;

TR1=1;

SBUF=N;
while(TI==0)
;

 TI=0;




        l=N%10;
		k=(N/10)%10;
		j=(N/100)%10;
		i=(N/1000)%10;
		h=(N/10000)%10;
       

	
	xbit=b[0];
	sendout(xbit);
	x=a[l];
	sendout(x);
P2_7=0;
P2_7=1;
delay();


	xbit=b[1];
	sendout(xbit);
	x=a[k];
	sendout(x);
P2_7=0;
P2_7=1;
delay();


	xbit=b[2];
	sendout(xbit);
	x=a[j];
	sendout(x);
P2_7=0;
P2_7=1;
delay();


	xbit=b[3];
	sendout(xbit);
	x=a[i];
	sendout (x);
P2_7=0;		
P2_7=1;

delay();


xbit=b[4];
sendout(xbit);
x=a[g];
sendout(x);
P2_7=0;
P2_7=1;
delay();


xbit=b[5];
sendout(xbit);
x=a[h];
sendout(x);
P2_7=0;
P2_7=1;
delay();
	}