1 .\" $NetBSD: onewire.4,v 1.2 2006/04/08 23:10:03 wiz Exp $
2 .\" $OpenBSD: onewire.4,v 1.2 2006/03/06 10:24:46 grange Exp $
4 .\" Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org>
6 .\" Permission to use, copy, modify, and distribute this software for any
7 .\" purpose with or without fee is hereby granted, provided that the above
8 .\" copyright notice and this permission notice appear in all copies.
10 .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
25 .Cd "onewire* at gpioow?"
27 .Cd "option ONEWIREVERBOSE"
29 1-Wire bus was originally developed by Dallas Semiconductor for connecting
31 It is commonly used for connecting devices such as electronic keys, EEPROMs,
32 temperature sensors, real-time clocks, security chips, etc.
36 driver provides a uniform programming interface layer between
37 1-Wire master controllers and various 1-Wire slave devices.
38 Each 1-Wire master controller attaches a
40 framework; several slave devices can then be attached to the
44 The driver supports plugging and unplugging slave devices on the fly.
46 .Bl -tag -width 10n -offset ind -compact
48 1-Wire bus bit-banging through GPIO pin
51 .Bl -tag -width 10n -offset ind -compact
53 .\"ID family type device
55 temperature family type device
62 driver first appeared in
71 .An Alexander Yurchenko Aq grange@openbsd.org
75 .An Jeff Rizzo Aq riz@NetBSD.org .