i wana display msg on lcd

[a]

i wana display msg on lcd interfaced with atmega 32. i want to use PB.0-rs, PB.1-rw, PB.2- en , and want to use data pins of same port i.e PB.4 TO PB.7. Here is my code…..cn ny 1 help me to solv out the prblm. wn i burn this code nthing is display on lcd.

 

 

//Program to Display string on LCD using AVR Microcontroller (ATmega16)

/*

LCD DATA port—-PORT B

signal port

---

PORT D

    rs

---

PD0

    rw

---

PD1

    en

---

PD2

*/

 

#include<mega32.h>

#include<delay.h>

 

#define LCD_DATA PORTB        //LCD data port

 

#define ctrl PORTB

#define en PORTB2        // enable signal

#define rw PORTB1        // read/write signal

#define rs PORTB0        // register select signal

 

void LCD_cmd(unsigned char cmd);

void init_LCD(void);

void LCD_write(unsigned char data);

void LCD_write_string(unsigned char *str) ;

 

 

void  main()

{

    DDRB=0xff;        

    PORTB=0xf0;        

    init_LCD();        // initialization of LCD

    delay_ms(50);        // delay of 50 mili seconds

    LCD_write_string(“sushilprajapati”);    // function to print string on LCD

    

}

 

void init_LCD(void)

{

    LCD_cmd(0x38);        // initialization of 16X2 LCD in 8bit mode

    delay_ms(1);

 

    LCD_cmd(0x01);        // clear LCD

    delay_ms(1);

 

    LCD_cmd(0x0E);        // cursor ON

    delay_ms(1);

 

    LCD_cmd(0x80);        // —8 go to first line and –0 is for 0th position

    delay_ms(1);

    return;

}

 

void LCD_cmd(unsigned char cmd)

{

    LCD_DATA=cmd;

    ctrl =(0<<rs)|(0<<rw)|(1<<en);    

    delay_ms(1);

    ctrl =(0<<rs)|(0<<rw)|(0<<en);    

    delay_ms(50);

    return;

}

 

void LCD_write(unsigned char data)

{

    LCD_DATA= data;

    ctrl = (1<<rs)|(0<<rw)|(1<<en);    

    delay_ms(1);

    ctrl = (1<<rs)|(0<<rw)|(0<<en);    

    delay_ms(50);                

    return ;

}

 

void LCD_write_string(unsigned char *str)    //store address value of the string in pointer *str

{

    int i=0;

    while(str!=’’)                // loop will go on till the NULL character in the string 

    {

        LCD_write(str);                // sending data on LCD byte by byte

        i++;

     }

    return;

}