ARDUINO /// LCD_Smiley

#include <LiquidCrystal.h>
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

int x = 7;
int y = 0;

byte ocitaj_taster()
{
 int tmp = analogRead(0); //stanje tastera se ocitava preko
 //analognog ulaza 0
 if (tmp > 850 && tmp < 650) //SELECT
 return 1;
 if (tmp > 450 && tmp < 650) //LEFT
 return 2;
 if (tmp > 50 && tmp <250) //UP
 return 3;
 if (tmp > 250 && tmp < 450) //DOWN
 return 4;
 if (tmp < 50) //RIGHT
 return 5;
 return 0; //nije pritisnut nijedan od tastera
}


void setup() {

  lcd.begin(16,2);

}

void loop() {
  int key = ocitaj_taster();
delay(100);

  switch(key){
    case 2:
      if( x > 0 && x <= 13) {
          x--;
        }
    break;

    case 3:
      if( y == 1) {
          y--;
        }
    break;

    case 4:
      if( y == 0) {
          y++;
        }
    break;

    case 5:
      if( x >= 0 && x < 13) {
          x++;
        }
    break;
  }
    lcd.clear();
    lcd.setCursor(x,y);
    lcd.print("^_^");
}