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Date: Thu, 15 Feb 2007 23:27:30 -0500
From: "Larry Hall (Cygwin)" <reply-to-list-only-lh AT cygwin DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: Lost support for baud rate of 230400 after minor Cygwin upgrade
References: <45D4EC76 DOT 50404 AT avegasystems DOT com> <Pine DOT CYG DOT 4 DOT 58 DOT 0702151758130 DOT 1060 AT PC1163-8460-XP DOT flightsafety DOT com> <45D51CD5 DOT 9060500 AT avegasystems DOT com>
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David le Comte wrote:
> Brian Ford wrote:
>> On Fri, 16 Feb 2007, David le Comte wrote:
>>
>>  
>>> Note that using stty -F /dev/comX where X is the "Comm port number"
>>> still works, ie it can still set the baud rate to 230400 (or even
>>> 250000).
>>>     
>>
>> Sorry, but note also that if you are going to use Posix style termio
>> calls, you need to use the Posix device name (/dev/ttySx).
>>
>>   
> Are you sure Brian?  I am running Cygwin on WinXP, and using stty on 
> /dev/ttyX fails,
> whereas on /dev/comX  it works (where X is valid of course).
> 
> Similarly open("/dev/ttyX",O_RDWR) returns -1, but returns a valid file 
> ID with open("/dev/comX",O_RDWR).
> 
> My understanding is, that on a PC, psuedo-device files of the form 
> "/dev/ttyX" do not exist?


What gave you that idea?

$ ls /dev/tty1
/dev/tty1

But Brian suggested using /dev/ttySx (i.e. '/dev/ttyS0').  These
are supported.

$ ls /dev/ttyS0
/dev/ttyS0

See <http://cygwin.com/cygwin-ug-net/using-specialnames.html>

-- 
Larry Hall                              http://www.rfk.com
RFK Partners, Inc.                      (508) 893-9779 - RFK Office
216 Dalton Rd.                          (508) 893-9889 - FAX
Holliston, MA 01746

_____________________________________________________________________

A: Yes.
 > Q: Are you sure?
 >> A: Because it reverses the logical flow of conversation.
 >>> Q: Why is top posting annoying in email?

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