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From: Steve Horne <horne AT diamond DOT astex DOT com>
Message-Id: <199904160246.WAA12179@diamond.astex.com>
Subject: help with serial ports
To: cygwin AT sourceware DOT cygnus DOT com
Date: Thu, 15 Apr 1999 22:46:59 -0400 (EDT)
Content-Type: text


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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