Reference TSerialPort

  TSerialPort = class
  public
    { Create a serial port given a device path such as /dev/ttyUSB0 }
    constructor Create(const Device: string);
    { Close the port and destroy the object }
    destructor Destroy; override;
    { Open the port using its current options }
    function Open: Boolean; overload;
    { Open the port and apply options }
    function Open(const Options: TSerialPortOptions): Boolean; overload;
    { Close the port }
    procedure Close;
    { Read available data as a string }
    function Read: string;
    { Read up to BufferSize bytes returning the number of bytes read }
    function ReadBinary(var Buffer; BufferSize: Integer): Integer;
    { Write a string to the port }
    procedure Write(const S: string);
    { Write a block of memory to the port }
    procedure WriteBinary(var Buffer; BufferSize: Integer);
    { Send an XOn character to resume transmission }
    procedure XOn;
    { Send an XOff character to pause transmission }
    procedure XOff;
    { Opened is true while the port is open }
    property Opened: Boolean read GetOpened;
    { The device path of the port }
    property Device: string read FDevice;
  end;