1.\" $OpenBSD: owctr.4,v 1.3 2013/07/16 16:05:49 schwarze Exp $ 2.\" 3.\" Copyright (c) 2010 John L. Scarfone <john@scarfone.net> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: July 16 2013 $ 18.Dt OWCTR 4 19.Os 20.Sh NAME 21.Nm owctr 22.Nd 1-Wire counter device 23.Sh SYNOPSIS 24.Cd "owctr* at onewire?" 25.Sh DESCRIPTION 26The 27.Nm 28driver provides support for the externally triggered counters on the 29DS2423 chip. 30The supported chip contains a 4096-bit SRAM and four 32-bit counters. 31The two externally triggered counters are accessible by the 32.Xr sysctl 8 33interface. 34.Pp 35The following chips are supported by the driver: 36.Pp 37.Bl -bullet -compact -offset indent 38.It 39Maxim/Dallas DS2423 40.El 41.Sh SEE ALSO 42.Xr intro 4 , 43.Xr onewire 4 , 44.Xr owsbm 4 , 45.Xr owtemp 4 , 46.Xr sysctl 8 47.Sh HISTORY 48The 49.Nm 50driver first appeared in 51.Ox 4.8 . 52.Sh AUTHORS 53.An -nosplit 54The 55.Nm 56driver was written by 57.An John L. Scarfone Aq Mt john@scarfone.net . 58