[Lazarus] Usage of Serial in a testing program?

Bo Berglund bo.berglund at gmail.com
Sun Sep 23 10:01:45 CEST 2018

On Sun, 23 Sep 2018 08:39:52 +0200, Bo Berglund via Lazarus
<lazarus at lists.lazarus-ide.org> wrote:

>I have now come as far in my application as I can test the way the
>Serial unit opens and closes com ports.
>It turns out that on Windows there are two port name syntaxes:
>Ports 1..9:     COM1 to COM9 will work
>Ports 10..255:  Only \\.\COM10 to \\.\COM255 will work
>But one does not need to use different naming depending on the port
>number, the second syntax \\.\COMx works also for ports 1..9

Forgot to add a question regarding making this a cross-platform

If I add a check for the platform inside my program, how sghould it
look like to work on both Windows and Linux?

Something like this:

function TWiFiCommTester.ConnectSerial(Port: byte; Baud: integer):
  ComportName: string;
  Flags: TSerialFlags;
  FLastError := '';
  ComPortName:= '\\.\COM' + IntToStr(Port);
     //What goes here?
     ComPortName := ????
  FSerial := SerOpen(ComPortName);

Bo Berglund
Developer in Sweden

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