def send(self, ser: BluetoothSerial) -> None:
ser.write(b'\x42')
def send(self, ser: BluetoothSerial) -> None:
dlen = len(self._data)
ser.write_command(SET_EXG_REGS_COMMAND, 'BBB', self._chip,
self._offset, dlen)
ser.write(self._data)
