#define LED_OBEN_PIN 5
#define LED_UNTEN_PIN 6
#define TASTER_AUF_PIN 2
#define TASTER_ZU_PIN 3
int rolloZustand = 0;

void LED_an(int pin) {
    digitalWrite(pin, HIGH);
}

void LED_aus(int pin) {
    digitalWrite(pin, LOW);
}

void setup() {
    pinMode(LED_OBEN_PIN, OUTPUT);
    pinMode(LED_UNTEN_PIN, OUTPUT);
    pinMode(TASTER_AUF_PIN, INPUT);
    pinMode(TASTER_ZU_PIN, INPUT);
}

void rolloSteuerung() {
    switch (rolloZustand) {
        case 0:
            LED_an(LED_OBEN_PIN);
            LED_aus(LED_UNTEN_PIN);
            break;
        case 1:
            LED_aus(LED_OBEN_PIN);
            break;
        case 2:
            LED_aus(LED_UNTEN_PIN);
            break;
        case 3:
            LED_aus(LED_OBEN_PIN);
            LED_an(LED_UNTEN_PIN);
            break;
        case 4:
            LED_aus(LED_OBEN_PIN);
            LED_aus(LED_UNTEN_PIN);
            break;
        default:
            break;
    }
}

void loop() {
    rolloSteuerung();
    delay(100); 
}