int controlChange = 176; // Control-Change auf MIDI Kanal 1

int potiWert[16];
int controllerWert[16];
int controllerWertAlt[16];
int potiPrint = 0;
int i = 0;

int bit1 = 0;
int bit2 = 0;
int bit3 = 0;
int bit4 = 0;

void setup() {
  //Select-Pins 4051s
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);

  Serial.begin(9600);
}

void loop() {
  bool dataChanged = false; // Flag to track if any data has changed

  for (i = 0; i <= 16; i++) {
    bit1 = bitRead(i, 0);
    bit2 = bitRead(i, 1);
    bit3 = bitRead(i, 2);
    bit4 = bitRead(i, 3);
    digitalWrite(2, bit1);
    digitalWrite(3, bit2);
    digitalWrite(4, bit3);
    digitalWrite(5, bit3);
    
    if (potisAbfragen(i, A0)) { // If potisAbfragen returns true, data has changed
      dataChanged = true;
      
    }
  }

  if (dataChanged) {
    //Serial.println("Poti: " + i + " - " + "Wert Changed:" + controllerWert);
    //sendeMIDI(176, (20+zaehler), controllerWert[zaehler]);
    Serial.println("data changed" + i );
    delay(2000);
  }
  delay(2200);
}


bool potisAbfragen(int zaehler, int analogPin) {
  potiWert[zaehler] = analogRead(A0);
  controllerWert[zaehler] = map(potiWert[zaehler], 0, 1023, 0, 127);

  if (controllerWert[zaehler] != controllerWertAlt[zaehler]) {
    //Serial.println(controllerWert[zaehler]);
    //Serial.println(potiWert[zaehler]);

    controllerWertAlt[zaehler] = controllerWert[zaehler];
  }

}

void sendeMIDI(int statusByte, int dataByte1, int dataByte2) {
  Serial.write(statusByte);
  Serial.write(dataByte1);
  Serial.write(dataByte2);
}