.\"	$OpenBSD: owctr.4,v 1.2 2010/07/06 23:10:25 jmc Exp $
.\"
.\" Copyright (c) 2010 John L. Scarfone <john@scarfone.net>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: July 6 2010 $
.Dt OWCTR 4
.Os
.Sh NAME
.Nm owctr
.Nd 1-Wire counter device
.Sh SYNOPSIS
.Cd "owctr* at onewire?"
.Sh DESCRIPTION
The
.Nm
driver provides support for the externally triggered counters on the
DS2423 chip.
The supported chip contains a 4096-bit SRAM and four 32-bit counters.
The two externally triggered counters are accessible by the
.Xr sysctl 8
interface.
.Pp
The following chips are supported by the driver:
.Pp
.Bl -bullet -compact -offset indent
.It
Maxim/Dallas DS2423
.El
.Sh SEE ALSO
.Xr intro 4 ,
.Xr onewire 4 ,
.Xr owsbm 4 ,
.Xr owtemp 4 ,
.Xr sysctl 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 4.8 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An John L. Scarfone Aq john@scarfone.net .