#include<reg52.h>

sfr MYDATA=0x90;		//p1 connected to D0-D7 of ADC0804
sfr outdata=0x80;		//p0 connected to D0-D7 of LCD pins

sbit INTR=P2^2;
sbit rd=P2^3;
sbit wr=P2^4;
sbit rs=P2^5;
sbit rw=P2^6;
sbit en=P2^7;



//Function Declaration//
void temperature(unsigned char value);
void MSDelay(unsigned int itime);
void lcdcmd(unsigned char value);
void lcddata(unsigned char value);

//Main Program//

void main(void)

{
unsigned char value;
 
TMOD=0x20;		// Mode 2 of timer1 is selected.
TH1=0xFD;		
SCON=0x50;
TR1=1;			

lcdcmd(0x38);
lcdcmd(0x0e);
lcdcmd(0x80);
lcdcmd(0x06);
lcdcmd(0x80);


lcddata('B');
lcddata('O');
lcddata('D');
lcddata('Y');
lcddata(' ');
lcddata('T');
lcddata('E');
lcddata('M');
lcddata('P');
lcddata('E');
lcddata('R');
lcddata('A');
lcddata('T');
lcddata('U');
lcddata('R');
lcddata('E');

lcdcmd(0xc0);

MYDATA=0xFF;		//make p1 an input
INTR=1;				//make INTR and input
rd=1;				//set RD high
wr=1;				//set WR high

while(1)
	
	{
	wr=0;			//send WR pulse
	wr=1;
	rd=0;			//send RD pulse
	value=MYDATA;	//read from ADC0848
	temperature(value);
	rd=1;
	}
}

//Subroutine Programs//


void lcdcmd(unsigned char value)
{
	outdata=value;
	rs=0;
	rw=0;
	en=1;
	MSDelay(1);
	en=0;
	return;
}

void lcddata(unsigned char value)

{

	outdata=value;
	rs=1;
	rw=0;
	en=1;
	MSDelay(1);
	en=0;
	return;

}

void temperature(unsigned char value)

{

unsigned char x,d1,d2,d3;
x=value/10;
d1=value%10;	//LSB
d2=x%10;
d3=x/10;		//MSB
value=d1;
lcdcmd(0xc8);
lcddata(d1);
value=d2;
lcdcmd(0xc9);
lcddata(d2);
value=d3;
lcdcmd(0xca);
lcddata(d3);
lcdcmd(0xcb);
lcddata('o');
lcddata('C');
return;
}

void MSDelay(unsigned int itime)

{
	unsigned int i,j;
	for(i=0;i<itime;i++)
	for(j=0;j<1275;j++);
 }