2006-04-09 03:10:03 +04:00
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.\" $NetBSD: onewire.4,v 1.2 2006/04/08 23:10:03 wiz Exp $
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2006-04-07 22:55:21 +04:00
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.\" $OpenBSD: onewire.4,v 1.2 2006/03/06 10:24:46 grange Exp $
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.\"
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.\" Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org>
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.\"
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.\" Permission to use, copy, modify, and distribute this software for any
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.\" purpose with or without fee is hereby granted, provided that the above
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.\" copyright notice and this permission notice appear in all copies.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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.\"
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.Dd April 4, 2006
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.Dt ONEWIRE 4
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.Os
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.Sh NAME
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.Nm onewire
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.Nd 1-Wire bus
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.Sh SYNOPSIS
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.Cd "onewire* at gpioow?"
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.Pp
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.Cd "option ONEWIREVERBOSE"
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.Sh DESCRIPTION
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1-Wire bus was originally developed by Dallas Semiconductor for connecting
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integrated circuits.
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It is commonly used for connecting devices such as electronic keys, EEPROMs,
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temperature sensors, real-time clocks, security chips, etc.
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.Pp
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The
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.Nm
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driver provides a uniform programming interface layer between
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1-Wire master controllers and various 1-Wire slave devices.
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Each 1-Wire master controller attaches a
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.Nm
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framework; several slave devices can then be attached to the
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.Nm
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bus.
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.Pp
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The driver supports plugging and unplugging slave devices on the fly.
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.Sh SUPPORTED MASTERS
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.Bl -tag -width 10n -offset ind -compact
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.It Xr gpioow 4
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1-Wire bus bit-banging through GPIO pin
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.El
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.Sh SUPPORTED SLAVES
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.Bl -tag -width 10n -offset ind -compact
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.It Xr owid 4
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ID family type device
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.It Xr owtemp 4
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temperature family type device
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.El
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.Sh SEE ALSO
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.Xr intro 4
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.Sh HISTORY
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The
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.Nm
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driver first appeared in
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.Ox 4.0
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and
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.Nx 4.0 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was written by
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.An Alexander Yurchenko Aq grange@openbsd.org
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and ported to
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.Nx
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by
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.An Jeff Rizzo Aq riz@NetBSD.org .
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