usb/158650: uplcom USB To COM Device doesn't transmit data, only receive

[Wayne Sierke]

The following reply was made to PR usb/158650; it has been noted by GNATS.

From: Wayne Sierke <ws at au.dyndns.ws>
To: Hans Petter Selasky <hselasky at c2i.net>
Cc: Renato Tambellini <rtsanch at gmail.com>, freebsd-gnats-submit at freebsd.org,
        freebsd-usb at freebsd.org
Subject: Re: usb/158650: uplcom USB To COM Device doesn't transmit data,
 only receive
Date: Fri, 08 Jul 2011 12:40:19 +0930

 On Wed, 2011-07-06 at 21:35 +0200, Hans Petter Selasky wrote:
 > I have an uplcom adapter here and I cannot reproduce except if I do the 
 > following:
 > 
 > cu -l /dev/cuaU0
 > 
 > Unplug uplcom. Then type something:
 > 
 > cu -l /dev/cuaU0
 > Connected
 > write: Device not configured
 > write: Device not configured
 > 
 > Then I need to "killall -KILL cu" to get back to normal.
 
 Just a note that in my experience it has always been sufficient in this
 circumstance (as far as I can recall) to simply exit normally from
 cu/tip; I don't recall ever having to KILL it. Typing the following has
 worked:
 
 <cr>~.
 
 i.e. carriage-return, tilde, then a period (or control-d) (assuming the
 default "~" escape character).
 
 I don't recall off-hand whether I've done this on 8.x, but certainly it
 has worked up to 7.4.
 
 
 Wayne