Re^5: Calling a function form an external DLL with Inline::C on windows

I hope I won't run into any further issues with timing, serial comms, windows dark magic, etc.

Of course there are further issues.

Win32::SerialPort uses Win32::CommPort which uses Win32::API to export some functions from the Windows API. And it seems that Win32::API doesn't like to work together with Inline::C - at least serial communication doesn't work with the solution derived in the posts above. I get a deluge of error messages, like

Use of uninitialized value in subroutine entry at C:/Perl/site/lib/Win
+32API/CommPort.pm line 213.
Use of uninitialized value in subroutine entry at C:/Perl/site/lib/Win
+32API/CommPort.pm line 247.
Second Read attempted before First is done at measure.pl line 402
Use of uninitialized value $got in numeric ne (!=) at C:/Perl/site/lib
+/Win32/SerialPort.pm line 1216.
Use of uninitialized value in subroutine entry at C:/Perl/site/lib/Win
+32API/CommPort.pm line 213.
Use of uninitialized value in subroutine entry at C:/Perl/site/lib/Win
+32API/CommPort.pm line 247.
Second Read attempted before First is done at measure.pl line 402
Use of uninitialized value $got in numeric ne (!=) at C:/Perl/site/lib
+/Win32/SerialPort.pm line 1216.
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Re^6: Calling a function form an external DLL with Inline::C on windows by proceng (Scribe) on Aug 09, 2010 at 17:00 UTC
Win32::SerialPort uses Win32::CommPort which uses Win32::API to export some functions from the Windows API. Where does Win32::SerialPort enter into the equation? The original question specifies that the communication is via TCP/IP, not serial. If there is something I missed...	[reply]
Re^7: Calling a function form an external DLL with Inline::C on windows by kikuchiyo (Hermit) on Aug 12, 2010 at 08:57 UTC
Sorry for replying so late, I wasn't following the thread anymore. Win32::SerialPort comes in because there are other components of my application beside the data readout that uses TCP/IP: one of these components uses serial communication to drive a positioning system. But I was mistaken about the purported incompatibility between Inline::C and Win32::SerialPort, they work together just fine. It was I who introduced a subtle bug in my program that caused those error messages. Sorry for the confusion.	[reply]
Re^8: Calling a function form an external DLL with Inline::C on windows by Anonymous Monk on Feb 13, 2015 at 22:11 UTC
Care to elaborate on the bug you introduced? I am having that same issue trying to move a code base back to windows after a few years away from it.	[reply]