Arduino - Joystick LED #2

void setup() {
  pinMode(2, INPUT_PULLUP); // Switch

  for(int i=0; i < 5; i++) {
    pinMode(i+3, OUTPUT);
  }
}

int ispis(int x) { // postavljanje svjetla na diodama 0-5
  for(int i=0; i < 6; i++) {
    digitalWrite(i+3, 0);
    if(i==x)
      digitalWrite(i+3, 1);

  }
}

//////////////
// global vars
int led = 0;
//////////////

void loop() {
  int x, z;
  x = analogRead(A0);                         // 0...1023
  z = digitalRead(2);                         // 0-off, 1-on

  if(x < 499)       led--;
  else if(x > 530)  led++;

  if(led > 5)
    led = 0;
  else if(led < 0)
    led = 5;

  if(z == 0)
    led++;

  ispis(led);
  delay(150);
}