unit1.pas

一个简单的串口接收程序,波特率4800

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, SPComm;

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Memo2: TMemo;
    Button2: TButton;
    Comm1: TComm;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure FormShow(Sender: TObject);
    procedure Comm1ReceiveData(Sender: TObject; Buffer: Pointer;
      BufferLength: Word);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;


implementation

{$R *.dfm}

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
   comm1.StopComm;
end;

procedure TForm1.FormShow(Sender: TObject);
begin
   comm1.StartComm;
end;

procedure TForm1.Comm1ReceiveData(Sender: TObject; Buffer: Pointer;
  BufferLength: Word);
  var
  viewstring:string;
  rbuf:array[0..1] of byte;

begin
viewstring:='';
move(buffer^,rbuf,2);
viewstring:=inttostr(rbuf[0]);
viewstring:=viewstring+'    '+inttostr(rbuf[1]);
memo1.lines.add(viewstring);
end;

procedure TForm1.Button2Click(Sender: TObject);
var
   x:integer;
begin
x:=strtoint(memo2.text);
form1.comm1.writecommdata(@x,1);

end;

end.