I am in the process of moving from a vanilla COM
communication system to a USB virtual COM (using the ftdi chip and driver).

Whenever I attempt to use my standard Win32::SerialPort, it croaks in CommPort.pm at CreateFile.

From what I could find, the problem* seems to be the way the FileHandle is called in kernel32...

(from another forum discussing this driver):
"I know that all of the Win32 API dlls, such as
kernel32.dll, use the _stdcall convention. It is my
understanding that any non-C programs linking to a dll require the _stdcall parameter passing convention.

BTW, the difference betweeen the two calling conventions is that when using _cdecl, the calling program cleans up the stack after the call, but with _stdcall, the called (dll) program does the cleanup."

Bottom line, has anyone had such an issue before and can they share the code modifications on how they made it work?

--------------------------------------------------
The error I get when I run is from CommPort.pm, sub CreateFile and says:

The system cannot find the file specified.
can't open device: COM10

[download]
....

In reply to Perl->Win32::CommPort->COM ports->Kernel32->ftdi driver by gluphus

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