#include <avr/io.h>
#define F_CPU 3686400UL    

#include "myavr_lcd.h"     
#include <util/delay.h>
#include <avr/pgmspace.h>
#include <string.h>
#include <stdio.h>

#define Tweiter  !(PINB & (1<<PB5))
#define Tok !(PINB & (1<<PB4))

void display (int number)
{
	switch (number)
	{
	  case 0:
	  	lcd_clrscr();
		lcd_puts("Hauptmenue      ");  
    	lcd_gotoxy(0,1);    
    	lcd_puts("1. ICT          ");
		break;

	  case 1:
	  	lcd_clrscr();
    	lcd_puts("1. ICT          ");
    	lcd_gotoxy(0,1);    
    	lcd_puts("AND             ");
		break;


	  case 2:
	  	lcd_clrscr();
    	lcd_puts("1. ICT          ");
    	lcd_gotoxy(0,1);    
    	lcd_puts("OR              ");
		break;


	  case 3:
	  	lcd_clrscr();
    	lcd_puts("1. ICT          ");
    	lcd_gotoxy(0,1);    
    	lcd_puts("NOT             ");
		break;


	  case 4:
	  	lcd_clrscr();
    	lcd_puts("1. ICT          ");
    	lcd_gotoxy(0,1);    
    	lcd_puts("NOR             ");
		break;


	  case 5:
	  	lcd_clrscr();
    	lcd_puts("1. ICT          ");
    	lcd_gotoxy(0,1);    
    	lcd_puts("NAND            ");
		break;


	  case 6:
	  	lcd_clrscr();
		lcd_puts("Hauptmenue      ");  
    	lcd_gotoxy(0,1);    
    	lcd_puts("2. UniDIB       ");
		break;


	  case 7:
	  	lcd_clrscr();
    	lcd_puts("2. UniDIB       ");
    	lcd_gotoxy(0,1);    
    	lcd_puts("AND             ");
		break;


	  case 8:
	  	lcd_clrscr();
    	lcd_puts("2. UniDIB       ");
    	lcd_gotoxy(0,1);    
    	lcd_puts("OR              ");
		break;


	  case 9:
	  	lcd_clrscr();
    	lcd_puts("2. UniDIB       ");
    	lcd_gotoxy(0,1);    
    	lcd_puts("NOT             ");
		break;


	  case 10:
	  	lcd_clrscr();
    	lcd_puts("2. UniDIB       ");
    	lcd_gotoxy(0,1);    
    	lcd_puts("NOR             ");
		break;


	  case 11:
	  	lcd_clrscr();
    	lcd_puts("2. UniDIB       ");
    	lcd_gotoxy(0,1);    
    	lcd_puts("NAND            ");
		break;

	}
	    
}

int main()
{

	int menue = 0;
	int submenue = 0;

  	lcd_init(LCD_DISP_ON);    
  	
	PORTB |=0b00010000;

	while(1)
    {
		switch(menue)
		{
			case 0:
				lcd_puts("UniDIB          ");
				lcd_gotoxy(7,1);
				lcd_puts("und ICT         "); 
				menue = 1;
		
			case 1:
	   			if(Tweiter)
				{
					_delay_ms(50);
					_delay_ms(50);
					while(Tweiter);
				
					display (0);
					menue = 2;
				}
				break;
				
  			case 2:
				if(Tweiter)
				{
					_delay_ms(50);
					_delay_ms(50);
					while(Tweiter);
	
					display (6);
					menue = 1;
				}
				break;
		}

	}
    
	return 0;
}