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  ComDataPacket.StopString := #13#10;					

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program ModTest;
{$APPTYPE CONSOLE}

uses
  SysUtils,
  CPort,
  Windows,
  SyncObjs;

var
  ComPort: TComPort;
  Events: TComEvents;
  Answer, Data: string;
  Step: Integer;
  Event: TEvent;


function CtrlHandler(CtrlType: LongWord): Boolean;
begin
  Event.SetEvent;
  Result := True;
end;

begin
  Event := TEvent.Create(nil, True, False, '');
  SetConsoleCtrlHandler(@CtrlHandler, True);
  try
      ComPort.Port := 'COM1';
      ComPort.Events := [];
      ComPort.FlowControl.ControlDTR := dtrEnable;
      ComPort.FlowControl.ControlRTS := rtsEnable;
      ComPort.Open; // open port
      ComPort.WriteStr('AT'#13#10); // send test command
      Answer := '';
      Step := 0;
      repeat
        Events := [evRxChar];
        ComPort.WaitForEvent(Events, Event.Handle, 5000);  // wait for charachters
        if evRxChar in Events then
        begin
          ComPort.ReadStr(Data, ComPort.InputCount);
          Answer := Answer + Data;
          if Pos('OK', Answer) > 0 then
            Break;
        end;
        Inc(Step)
      until (Events = []) or (Step = 20);
    
    finally
      ComPort.Free;
    end;
  except
    on E: Exception do
      WriteLn('Error: ' + E.Message);
  end;
  Event.Free;
end.					

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unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    ComPort1: TComPort;
    ComDataPacket1: TComDataPacket;
    Edit1: TEdit;
    procedure ComDataPacket1Packet(Sender: TObject; const Str: String);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.ComDataPacket1Packet(Sender: TObject; const Str: String);
begin
 edit1.text:=str;
end;

end.