//Program to Display

[Sajjad]

 

//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<avr/io.h>

#include<util/delay.h>

 

#define LCD_DATA PORTB //LCD data port

 

#define ctrl PORTD

#define en PD2 // enable signal

#define rw PD1 // read/write signal

#define rs PD0 // register select signal

 

void LCD_cmd(unsigned char cmd);

void init_LCD(void);

void LCD_write(unsigned char data);

 

int main()

{

DDRB=0xff;

DDRD=0x07;

init_LCD(); // initialization of LCD

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

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

return 0;

}

 

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;

}

THIS IS THE CODE i am using. 
i have used the control pins and data pins according to code…