Corinna Vinschen <corinna-cygwin <at> cygwin.com> writes: > You should nevertheless use /dev/com4 or /dev/ttyS3. I might be wrong > but it still looks like you don't quite see what Brian was up to. > > Corinna >
Hmm...I think I see what you're getting at. I'm (obviously) not really all that knowledgeable of serial ports under Cygwin. I was quite shocked actually that I could just open "COM4" and write to it and it seemed to work OK.... ....so...If I open "COM4" from cygwin, cygwin thinks I'm really just opening some disk file..and probably all I can do is read/write..and perhaps even that might not be totally reliable. If I use /dev/com4 (or /dev/ttyS3), then the underlying software understands that I am actually opening a serial port, and all of the things like baud rate, parity, start, stop bits..etc..can all be configured correctly...and there is probably a lot more testing that goes into making sure /dev/com4 works properly. Thanks to Brian for bringing it up, and thanks to you for the clarification. I was missing the point that COM4 is NOT the right way to access serial port #4 under cygwin. It's easy enough to change... Todd -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/