programming for lcd display

inspiretechuniverse

i have written some code for transmitting text from at89c52 to lcd display. input to the microcontroller is from P3.0(RXD).

executed the program and tested with proteus simulator. i am able transmit the text. but after 16 letters, text is not displaying.
if we keep on giving input, it is giving the letters but some words are missing in between...
i am attaching the image. plz help me out....'

..

my code is

#include <REGX52.H>

//Program to interface RFID with 8051 microcontroller (AT89C51) #include<reg51.h>
unsigned int data_out,command=0x80,temp;
sfr lcd_data_pin=0x90; //P1 port
sbit rs=P2^0; //Register select
sbit rw=P2^1; //Read/Write
sbit en=P2^2; //Enable pin
unsigned char card_id[16];

void delay(unsigned int count) //Function to provide delay
{
int i,j;
for(i=0;i<count;i++)
for(j=0;j<1275;j++);
}

void lcd_command(unsigned char comm) //Lcd command funtion
{
lcd_data_pin=comm;
en=1;
rs=0;
rw=0;
delay(1);
en=0;
}

void lcd_data(unsigned char disp) //Lcd data function
{
lcd_data_pin=disp;
en=1;
rs=1;
rw=0;
delay(1);
en=0;
}

lcd_string(unsigned char *disp) //Function to send string
{
int x;
for(x=0;disp[x]!=0;x++)
{
lcd_data(disp[x]);
}
}
void lcd_ini() //Function to initialize the LCD
{
lcd_command(0x38);
delay(5);
lcd_command(0x0F);
delay(5);
lcd_command(0x80);
delay(5);
}

void recieve() //Function to recieve data serialy from RS232
{
unsigned char k;
for(k=0;k<16;k++)
{
while(RI==0);
card_id[k]=SBUF;
RI=0;
}
}

void main()
{
int i;
TMOD=0x20; //Enable Timer 1
TH1=0XFD;
SCON=0x50;
TR1=1; // Triggering Timer 1
lcd_ini();
//lcd_command(0x80); //Place cursor to second position of first line
delay(1);
while(1)
{

recieve();
for(i=0;i<32;i++)
{
lcd_data(card_id);
}
}
}

Mike Green

These forums provide support for products made or sold by Parallax, mostly the Propeller and Basic Stamp microcontrollers. We can't help you with your 8051 programming problems. Sorry.