   displayMessage(message);
 }
 
-void updateBleCharacteristics() {
-  BlePopulationCharacteristic.setValue(population);
-  BleOpenCharacteristic.setValue((unsigned char) isDoorOpen);
-  // BleOrientationCharacteristic.setValue((unsigned char) enterFromLeftToRight);
-}
-
 void incrementPopulation() {
   population++;
   updatePopulation();

void closeDoor() { // only close the door if it wasn't already closed.
  if (isDoorOpen) {
    isDoorOpen = false;
    printlnIfDebug("Door closed");
  }
}

// Update population
void updatePopulation() {
  lcd.setCursor(12, 0);
  lcd.print("    ");
  lcd.setCursor(12, 0);

      printInfoIfDebug(doorAngle, ping_1, ping_2);
    }

    // CURRENT CONTROL SCHEME: left and right buttons make the entering direction in the orientation specified by the button.
    // select buttons always toggles the orientation.
    uint8_t buttons = lcd.readButtons();
