#include <avr/io.h>
#include <util/delay.h>

void LCD_command(unsigned char command)
{
	PORTB = command;
	PORTG = 0x04;
	_delay_us(1);
	PORTG = 0x00;
	_delay_us(5);
}

void LCD_data(unsigned char data)
{
	PORTB = data;
	PORTG = 0x05;
	_delay_us(1);
	PORTG = 0x01;
	_delay_us(5);
}

void LCD_string(unsigned char command, unsigned char *string)
{
	LCD_command(command);
	while(*string != '\0')
	{
		LCD_data(*string);
		string++;
	}
}

void LCD_initialize(void)
{
	DDRB = 0xFF;
	DDRG = 0xFF;
	_delay_ms(20);
	LCD_command(0x38);
	LCD_command(0x08);
	LCD_command(0x01);
	_delay_ms(2);
	LCD_command(0x06);
	LCD_command(0x0E);
}

int main(void)
{
	LCD_initialize();
	
	while(1)
	{
		LCD_string(0x80,"ATmega128 Simul");
		LCD_string(0xC0,"* DICE of HSU *");
		_delay_ms(200);
	}
}