LCD Not working

[kite]

 

Hi ,

 

I am new to PIC and have been trying  the Circuit diagram of LCD interfacing with PIC 18F4550 of the engineering garage website but in my  lcd all i see  is just black boxes . please help !!!

 

 

 

#include<p18f4550.h>

#include<Delays.h>

#pragma config FOSC =INTOSC_EC

#pragma WDT = OFF

//LCD Control pins

#define rs LATAbits.LATA0

#define rw LATAbits.LATA1

#define en LATAbits.LATA2

 

//LCD Data pins

#define lcdport LATB

 

void lcd_ini(void);

void lcdcmd(unsigned char n);

void lcddata(unsigned char n);

unsigned int i=0;

 

void main(void)

{

TRISA=0; // Configure Port A as output port

LATA=0;

TRISB=0; // Configure Port B as output port

LATB=0;

lcd_ini(); // LCD initialization

lcddata(‘E’); // Print ‘E’

Delay10KTCYx(200);

lcdcmd(0x85); // Position 1st Line, 6th Column

lcddata(‘G’); // Print ‘G’

 

}

void lcd_ini()

{

lcdcmd(0x38); // Configure the LCD in 8-bit mode, 2 line and 5×7 font

Delay10KTCYx(0.31 );

lcdcmd(0x0C); // Display On and Cursor Off

Delay10KTCYx(0.31 );

lcdcmd(0x01); // Clear display screen

Delay10KTCYx(0.31 );

lcdcmd(0x06); // Increment cursor

Delay10KTCYx(0.31 );

lcdcmd(0x80); // Set cursor position to 1st line, 1st column

Delay10KTCYx(0.31 );

}

 

void lcdcmd(unsigned char cmdout)

{

lcdport=cmdout; //Send command to lcdport=PORTB

rs=0;

rw=0;

en=1;

Delay10KTCYx(2);

en=0;

}

 

void lcddata(unsigned char dataout)

{

lcdport=dataout; //Send data to lcdport=PORTB

rs=1;

rw=0;

en=1;

Delay10KTCYx(2);

en=0;

}

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