INTERFACING LCD WITH ATMEGA16/32.....

LCD INTERFACING WITH ATmega16 by RAJ PRAJAPATI

THIS IS THE CODE WRITTEN BY ME FOR THE 8 BIT MODE FOR LCD INTERFACING...

/*HEADER FILE TO USE LCD IN 8 BIT MODE

  PORTA FOR DATA PINS OF LCD

                                                PA0=DB0

                                                PA1=DB1

                                                PA2=DB2

                                                PA3=DB3

                                                PA4=DB4

                                                PA5=DB5

                                                PA6=DB6

                                                PA7=DB7

                PORTB

                                                PB0=RS

                                                PB1=RW

                                                PB2=RN

  DESIGNED BY:-                RAJ PRAJAPATI (NAGPUR INSTITUTE OF TECHNOLOGY, NAGPUR)

*/

/*---------------------------------------------------------------------------------------------------*/

                                                                //HEADER FILES

#include<avr/io.h>

#include<util/delay.h>

#include<stdlib.h>

/*----------------MACROS--------------------*/

#define rs 0

#define rw 1

#define en 2

/*---------------PIN CONFIGURATION--------------------------------*/

//PORTA =DATA PIN

//PORTB.0=rs

//PORTB.1=rw

//PORTB.2=en

/*--------------FUNCTION PROTOTYPE--------------------------------*/

void lcd_init_raj();

void lcd_cmd_raj(unsigned char);

void lcd_data_raj(unsigned char);

void enable_raj();

void lcd_puts_raj(unsigned char *);

void lcd_clrscr_raj();

void lcd_gotoxy_raj(unsigned char,unsigned char);

void delay(unsigned int);

void lcd_shift_left_raj(unsigned int);

void lcd_shift_right_raj(unsigned int);

void lcd_value_raj(long double int);

void busy_raj(void);

#endif

/*--------------FUNCTION DEFINITIONS-----------------------------*/

void lcd_value_raj(long double int x)

{

                                                unsigned char buf[16];

                                                sprintf(buf,"%le",x);

                                                lcd_puts_raj(buf);

                                                delay(100);

}

void busy_raj(void)

{

                unsigned int bit,X;

                DDRA=0b01111111;

                X=PINB;

                PORTB&=~(1<<rs);

                PORTB|=(1<<rw);

                PORTB&=~(1<<en);

                delay(2);

                PORTB|=(1<<en);

                bit=0x80&X;

                while(bit==0x80);

                DDRA=0xff;

                DDRB=0xff;

               

}

void lcd_shift_left_raj(unsigned int i)

{

                for(int x=1;x<=i;x++)

                {             

                                lcd_cmd_raj(0x18);

                                delay(300);

                }

}

void lcd_shift_right_raj(unsigned int i)

{

                for(int x=1;x<=i;x++)

                {             

                                lcd_cmd_raj(0x1c);

                                delay(300);

                }

}

CONTACT FOR FULL CODE :.......