From owner-freebsd-usb@FreeBSD.ORG  Mon Dec 14 07:42:05 2009
Return-Path: <owner-freebsd-usb@FreeBSD.ORG>
Delivered-To: freebsd-usb@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 791E6106566B
	for <freebsd-usb@freebsd.org>; Mon, 14 Dec 2009 07:42:05 +0000 (UTC)
	(envelope-from ed@hoeg.nl)
Received: from palm.hoeg.nl (mx0.hoeg.nl [IPv6:2001:7b8:613:100::211])
	by mx1.freebsd.org (Postfix) with ESMTP id 1D7488FC21
	for <freebsd-usb@freebsd.org>; Mon, 14 Dec 2009 07:42:05 +0000 (UTC)
Received: by palm.hoeg.nl (Postfix, from userid 1000)
	id 3C3981CC5C; Mon, 14 Dec 2009 08:42:04 +0100 (CET)
Date: Mon, 14 Dec 2009 08:42:04 +0100
From: Ed Schouten <ed@80386.nl>
To: Trevor Blackwell <tlb@tlb.org>
Message-ID: <20091214074204.GW64905@hoeg.nl>
References: <43EC7D78-31E5-4B86-9316-002AE650727A@tlb.org>
	<200912111038.06875.hselasky@c2i.net>
	<C56E01C7-B772-43F9-B5E1-2DBB2F04D4AE@tlb.org>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature"; boundary="AOVdNAQjoPfa0oJU"
Content-Disposition: inline
In-Reply-To: <C56E01C7-B772-43F9-B5E1-2DBB2F04D4AE@tlb.org>
User-Agent: Mutt/1.5.20 (2009-06-14)
Cc: freebsd-usb@freebsd.org
Subject: Re: USB serial device naming
X-BeenThere: freebsd-usb@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: FreeBSD support for USB <freebsd-usb.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-usb>,
	<mailto:freebsd-usb-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-usb>
List-Post: <mailto:freebsd-usb@freebsd.org>
List-Help: <mailto:freebsd-usb-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-usb>,
	<mailto:freebsd-usb-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 14 Dec 2009 07:42:05 -0000


--AOVdNAQjoPfa0oJU
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

Hello Trevor,

* Trevor Blackwell <tlb@tlb.org> wrote:
> I can't seem to find a way to match USB serial ports & tty names. I
> have two serial USB devices, which I can distinguish easily from
> "usbconfig show_ifdrv"
>=20
> 	<snip>
>=20
> and they result in two ttys:
> 	/dev/cuaU0
> 	/dev/cuaU1

Be sure to keep in mind: the `real' TTY devices are ttyU0 and ttyU1. The
cua* devices are callout devices, which unlike the tty* devices don't
wait for a carrier detect signal during open().

My opinion is that the USB serial driver shouldn't use a bitmask to keep
track of which unit number are available, because we've got a nice KPI
for that:

	http://www.freebsd.org/cgi/man.cgi?query=3Dnew_unrhdr

Unfortunately I cannot answer your question. Hopefully Hans can. ;-)

Cheers,
--=20
 Ed Schouten <ed@80386.nl>
 WWW: http://80386.nl/

--AOVdNAQjoPfa0oJU
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (FreeBSD)

iEYEARECAAYFAksl7EwACgkQ52SDGA2eCwU/UwCdFBjvg00/N7vgWJA8hVsPR0On
0QIAn0s17C3ZhyZPJWtLXQDIjuV5TWr1
=QU0O
-----END PGP SIGNATURE-----

--AOVdNAQjoPfa0oJU--