message: Tympan: assume BLE is default.  Turn off regular printing to BT serial.
diff: @@ -272,6 +272,7 @@ class TympanBase : public AudioControlAIC3206, public Print
  //USB_Serial->begin(USB_speed); //Not needed for Teensy?
  delay(50);
  beginBluetoothSerial(BT_speed);
  + setEchoAllPrintToBT(false); //by default, do NOT send print() to the BT serial (it used to be the opposite)
  }
  int USB_dtr() { return USB_Serial->dtr(); }
  @@ -386,7 +387,7 @@ class TympanBase : public AudioControlAIC3206, public Print
  int BT_uint8_buff_ind = 0;
  int BT_uint8_buff_end = 0;
  uint8_t BT_uint8_buff[BT_uint8_buff_len];
  - bool echoAllPrintToBT = true;
  + bool echoAllPrintToBT = false; //by default, do not echo print() to the BT serial
  virtual size_t write_BC127_V7_command_mode(const uint8_t *buffer, size_t size);
  virtual void read_BC127_V7_command_mode(void);
  