[Mozzzg]

Люди, подскажите, плиз, как работать с COM-портом. Оооооочень надо, и чем быстрее, тем лучше. Заранее спасибо.

[ilang]

http://megalib.com/books/923/700069.htm

[Admin]

http://www.delphisources.ru/pages/so...bcom_port.html

[Mozzzg]

Всем огромное спасибо. Теперь осталось только разобраться. Думаю справлюсь.:d

[naumovmag]

Сначала открываем порт:

Код:

procedure TForm1.Button4Click(Sender: TObject);
begin
Button5.Enabled:=True;
Button4.Enabled:=False;
  Port := CreateFile(PChar(ComboBox1.Items[ComboBox1.ItemIndex]),GENERIC_READ+GENERIC_WRITE,0,nil,OPEN_EXISTING,
		      FILE_ATTRIBUTE_NORMAL,LongInt(0));
  SetupComm(Port,1024,1024);
  PurgeComm(Port,PURGE_TXABORT or PURGE_RXABORT or PURGE_TXCLEAR or PURGE_RXCLEAR);
  GetCommState(Port,PortDCB);
  PortDCB.BaudRate := StrToInt(BaudTrans.Items[BaudTrans.ItemIndex]);

  PortDCB.StopBits := 1;
  PortDCB.Flags:=4113;
  if ControlCTS.Checked then PortDCB.Flags:=PortDCB.Flags xor 4;
  SetCommState(Port,PortDCB);
  if AutoRTS.Checked then EscapeCommFunction(Port,CLRRTS);
  TimerReceive.Enabled:=True;
end;

Читаем из него:

Код:

procedure TForm1.TimerReceiveTimer(Sender: TObject);
var CountCharWait: word;
    TimeOut: byte;
    NumberWritten: cardinal;
    PhoneCommand: string;
  procedure ReadPort;
  var  inBuf: array [0..1024] of char;
       cbCharsRead,dwErrorCode: dword;
       i: integer;
    procedure HexDecReceive;
    var
    InBuf: array [0..1024] of byte;
      cbByteRead:dword;
      i: integer;
    begin
     if ReadFile(Port,InBuf,CountCharWait,cbByteRead,nil)
      then
        begin
        for i:=0 to cbByteRead-1 do
           if RadioButton1.Checked
             then CharsReceived.Caption:=CharsReceived.Caption+intToHex(inBuf[i],2)+' '
             else CharsReceived.Caption:=CharsReceived.Caption+intToStr(inBuf[i])+' ';
        end;

    end;
  begin
    inc(TimeOut);
    ClearCommError(Port,dwErrorCode,@PortStat);
    CountCharWait := PortStat.cbInQue;

    if CountCharWait > 0 then
      begin
       TimeOut:=0;
      if (RadioButton1.Checked) or (RadioButton2.Checked) then HexDecReceive else
        if ReadFile(Port,InBuf,CountCharWait,cbCharsRead,nil)
           then for i:=0 to cbCharsRead-1 do
                     CharsReceived.Caption:=CharsReceived.Caption+inBuf[i]
           else dwErrorCode := GetLastError;
      end;

   end;
begin
     ReadPort;
     if (TimeOut<>0)and (CharsReceived.Caption<>'') then
        begin

             if trim(CharsReceived.Caption) = 'RING' then begin   //Ждём вызова
             NumberWritten := 0;
             PhoneCommand:='ATA'+#13#10;
             WriteFile(Port, PChar(PhoneCommand)^, Length(PhoneCommand), NumberWritten, nil);
             end;

             if trim(CharsReceived.Caption) = 'send' then begin   //Ждём команду приёма файла
             Timer2.Enabled:=True;
             TimerReceive.Enabled:=False;
             exit;
             end;

             if triim(Char)

         MemoRx.Lines.Add(CharsReceived.Caption);
         if CheckBox1.Checked then
            begin
              Edit1.Text:=CharsReceived.Caption;
              if Radiobutton3.Checked
                  then TransmitClick(Sender)
                  else TxHexButtonClick(Sender);
              Edit1.Text:='';
            end;
         CharsReceived.Caption:='';

        end;
//     LedTrans.Brush.Color:=clNone;
     if TimeOut>10 then TimeOut:=0;

end;

Пишем в него:

Код:

procedure TForm1.TransmitClick(Sender: TObject);
var
PhoneCommand: string;
NumberWritten: cardinal;
begin
PhoneCommand := Edit1.Text + #13 + #10; 
  NumberWritten := 0;
  WriteFile(Port, PChar(PhoneCommand)^, Length(PhoneCommand), NumberWritten, nil);
end;