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help with serial ports
- To: cygwin@sourceware.cygnus.com
- Subject: help with serial ports
- From: Steve Horne <horne@diamond.astex.com>
- Date: Thu, 15 Apr 1999 22:46:59 -0400 (EDT)
I'm using Beta 20.1 from
ftp://go.cygnus.com/pub/sourceware.cygnus.com/cygwin/cygwin-b20/
running on w95. I'm trying to talk to the serial port
from what I hoped would be a simple C program.
I have been looking through the archives, FAQS & etc and
have not yet figured out how to access a serial port.
Neither open("COM1:"...) (or 2, with or without colon) or
open("/dev/com1"...)
seems to work. (The call returns failure.)
Also, "cat /dev/com1" from the bash shell
gives a file protection error of some sort.
(sorry, I'm not at work & don't have exact text)
I used version 19 successfully for another project (with no serial port I/O)
but it had the same problems as V 20. I had hoped upgrading would help,
but no luck.
If someone could send me a code fragment that has worked for
them I would be grateful.
Thanks,
Steve
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