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            Construct and open a basic_serial_port.
          
basic_serial_port( asio::io_service & io_service, const char * device);
This constructor creates and opens a serial port for the specified device name.
                  The io_service
                  object that the serial port will use to dispatch handlers for any
                  asynchronous operations performed on the port.
                
The platform-specific device name for this serial port.