class LogicBoardDevice
{
 public:
  /// FIXME Can I have a constructor that would be called before concretes?
  /// Could use this to set up correct reference to UsbPorts.
  unsigned char query();
  /// Send the Message to the UsbPort.
  unsigned char send(Message);
  
 protected:
  /// The message used to query the device.  Should be set in constructors.
  Message& query_message;

 private:
  UsbPort& usb_port;
};