.\"	$OpenBSD: uthum.4,v 1.5 2010/04/19 06:32:53 jmc Exp $
.\"
.\" Copyright (c) 2009 Yojiro UO <yuo@nui.org>
.\"
.\" 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: April 19 2010 $
.Dt UTHUM 4
.Os
.Sh NAME
.Nm uthum
.Nd TEMPer USB temperature and humidity sensor
.Sh SYNOPSIS
.Cd "uthum* at uhidev?"
.Sh DESCRIPTION
The
.Nm
driver provides support for pcsensors TEMPer devices.
The following devices are supported by the
.Nm
driver:
.Bl -column "TEMPerNTCXXX" "Sensors" -offset indent
.It Em "Device" Ta Em "Sensors"
.It Li "TEMPerHUM" Ta "1 Temperature and 1 Humidity"
.It Li "TEMPer" Ta "1 Temperature (internal)"
.It Li "TEMPer1" Ta "1 Temperature (external)"
.It Li "TEMPer2" Ta "2 Temperature (internal/external)"
.It Li "TEMPerNTC" Ta "2 Temperature (internal/external)"
.El
.Pp
The sensor possesses a collection of sensor values which are
made available through the
.Xr sysctl 8
interface.
The humidity data unit is "%RH" (relative humidity) and the
temperature data unit is "degC".
.Sh SEE ALSO
.Xr intro 4 ,
.Xr uhidev 4 ,
.Xr sensorsd 8 ,
.Xr sysctl 8
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Yojiro UO Aq yuo@nui.org .
.Sh BUGS
There is not enough support for the external temperature sensor
of the TEMPerNTC.
Currently the
.Nm
driver supports about 0 degC to 120 degC for the sensor.