Embedded c program for micro controller

HI Plz help me how to write a program for ADC0808 with 89s52

#include<reg51.h>
#include<intrins.h>
#include<stdio.h>

sbit rs=P3^6;
sbit en=P3^7;

sbit eoc=P2^1;
sbit soc=P2^0;

sbit cha=P2^2;
sbit chb=P2^3;
sbit chc=P2^4;

void cmdwrt();
void delay();
void datawrt();
void asc();
void valconv();

unsigned char dis[6]={0x30,0x38,0x08,0x0c,0x06,0x80};
unsigned char a,b,c,d;

main()
{
int i;
for( i=0;i<6;i++)
{
a=dis;
cmdwrt();
delay();
}
//select channel
cha=0;
chb=0;
chc=0;
while(1)
{
a=0x80;
cmdwrt();
delay();

eoc=0x01;
soc=0x00;
delay();

soc=0x01;
delay();
soc=0x00;

while(eoc); //wait for conversion
delay();
a=P1;
asc(); //display
delay();
}
}

void asc()
{
d=a;
a=a>>4;
a=a & (0x0f);
valconv(); //conv to ascii
datawrt(); //disp on LCD

a=d;
a=a & (0x0f);
valconv();
datawrt();
}


void valconv()
{
if(a <= (0x09))
{
a=a+ (0x30);
}
else
{
a=a+ (0x37);
}
}


void cmdwrt()
{
rs=0;
P0=a;
en=1;
delay();
en=0;
}

void datawrt()
{
rs=1;
P0=a;
en=1;
delay();
en=0;
}

void delay()
{
int i;
for(i=0;i<1000;i++);
}

#include <reg51.h>
#include "io.h"


sbit READ = P3^2; /* Define these according to how you have connected the */
sbit WRITE = P3^3;/* RD, WR, and INTR pins */
sbit INTR = P3^4;


void main( void ) {

unsigned char adVal;
unsigned long volts;
InitIO();

READ = 1;
WRITE = 1;
INTR = 1;
ClearScreen();

while(1) {

/* Make a low-to-high transition on the WR input */

while( INTR == 1 ); /* wait until the INTR signal makes */
/* high-to-low transition indicating */
/* completion of conversion */


/* Read the voltage value from the port */
READ = 0;
adVal = P1;
READ = 1;

/* Compute the digital value of the volatge read */

/* Print the value of the voltage in decimal form */
}
}

if you are new then i recommend you to read and understand the complete book and try yourself.... asking for ready code will not help you

refer this for any information

**broken link removed**

Hi,

Better to know all the interfacing part of micro controller & learn about the C language after that try to implement.

Regards
Chanchal

santoshaxl said:

#include "io.h"

Click to expand...

header file is missing, so it might give compile time error

yes sir that was the mistake should be
#include<reg51.h>
#include<intrins.h>
#include<stdio.h>