adc003.c

adc0809的模数转换程序

#include<absacc.h>
#include<reg51.h>

#define uchar unsigned char
#define uint  unsigned int

sbit P24=P2^4;
sbit EOC=P2^6;
sbit GW=P2^0; 
sbit SW=P2^1; 
sbit BW=P2^2; 
sbit QW=P2^3; 
sbit DOT=P1^7;
unsigned char getdata;
unsigned long temp;
uchar led_tab[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};
void display(int m )

{
   P1=led_tab[m];
  }

/*uchar data  led[4];
uint data  tvdata;    

uchar code  tv[]={0xfe,0xfd,0xfb,0xf7};
uchar code  a[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};
                     

void delay(void)                      //延时程序
{
  uint i;
  for(i=0;i<10;i++);
}


void ledxianshi(void)       //显示模块
{
  uchar k,i;
  led[0]=tvdata%10;
  led[1]=tvdata/10%10;
  led[2]=tvdata/100%10;
  led[3]=tvdata/1000;
		
  for(k=0;k<4;k++)
  { 
   P2=tv[k];
   i=led[k];
   P1=a[i];
   delay();
  }
} 
*/
void ST(bit i)
{
 P24=i;
 WR=i;
 

}
void OE(bit i)
{
 P24=i;
 RD=i;
 

}
void delay(unsigned int k)
{
while(k--);
}

void main()
{  
unsigned int num;


   

/*

ST(1);
OE(1);
TMOD=0x12;
TH0=0x216;
TL0=0x216;
TH1=(65536-4000)/256;
TL1=(65536-4000)%256;
TR1=1;
TR0=1;
ET0=1;
ET1=1;
EA=1;
ST(0);
ST(1);
//getdata=P0;


if(EOC==0)
{
OE(0);
getdata=P0;
OE(1);
temp=(getdata*2350);
temp=temp/128;
if(temp<2732)
{
temp=2732-temp;

}
else
{
temp=temp-2732;

}
}
*/

 EA = 1;                     //开总中断
 TMOD = 0x02;                //设定定时器T0工作方式  
 TH0=216;                    //利用T0中断产生CLK信号
 TL0=216;
 TR0=1;                      //启动定时器T0
 ET0=1;
 ST(1);
 OE(1); 
 ST(1);
 
 delay(10);
 ST(0);                    //启动AD转换
 delay(10);
 ST(1);
 while(EOC==0)
   ;
 OE(0);
 getdata=P0;
 OE(1);
 delay(100);

 temp=getdata*195;
 num=(unsigned int)temp/100;

 



   while(1)
        {
       
	  
	    
		GW=0;
        display(num%10);
        delay(100);
        GW=1;

		SW=0;
        display(num/10%10);
		DOT=1;
        delay(100);
        SW=1;
		

		


		BW=0;
        display(num/100);
        delay(100);
        BW=1;
		
	

        
        
   }
}