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Date:	Fri, 6 Apr 2001 14:38:31 -0700
From:	Enoch Wu <enochw AT scn DOT org>
To:	cygwin AT sources DOT redhat DOT com
Subject:	Re: serial communications
Message-ID:	<20010406143831.A3993313@MELON>
Reply-To:	Enoch Wu <enochw AT scn DOT org>
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In-Reply-To:	<Pine.4.10.10104061219090.859-100000@lab3-7.eng.utah.edu>; from bergstro@eng.utah.edu on Fri, Apr 06, 2001 at 12:22:36PM -0600
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Hi,,

On Fri, Apr 06, 2001 at 12:22:36PM -0600, James Bergstrom wrote:
> I am very new at using cygwin.  I just need to know how to do IO through a
> serial port.  I have a driver written in C for Unix to control a device
> through the serial port, and now we are going to use it on a win98 machine
> using cygwin.  Perhaps there is an example somewhere of writing bits to a
> serial port?

Perhaps there is. Can you really send bits at a time? I don't think so. The PC serial port is byte oriented. You can send a byte with some bits masked off. The serial port uses start and stop bits to synchronize. 

I'd be curious to know what devices can receive bits less than an 8 bit byte.

EW
> 
> Thank you very much,
> I have been struggling with this for hours now.
> 
> James Bergstrom
> University of Utah
> El En / Cp Sc / Cp En 
> 
> 
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