  ****************************************************/
 void setup() {
   initializeAmplifier();
+  trellis.begin(0x70);
+  trellis.clear();
+  trellis.writeDisplay();
 
   Serial.begin(14400);
   while (!Serial && millis() < nextIdleTick + 2000);

    if (state == PLAY_SELECTED) stopPlaying();
    nextTimeoutTick = 0; // no timeout during playing
    nextNfcTick = 0; // no nfc reading during playing
    enablePlayer(true);
    onStartFirstTrack(index);
    enableAmplifier(!headphone);

}

void enableAmplifier(boolean enable) {
  pinMode(AMPLIFIER_ENABLE_PIN, OUTPUT);
  digitalWrite(AMPLIFIER_ENABLE_PIN, enable);
}

void enableNfc(boolean enable) {
  pinMode(NFC_RESET_PIN, OUTPUT);
  if (enable) {
    Serial.println("Enable NFC");
    digitalWrite(NFC_RESET_PIN, HIGH);
    configNfc();
  } else {
    Serial.println("Disable NFC");
    digitalWrite(NFC_RESET_PIN, LOW);    
  }
}


