$NetBSD: tm121temp.4,v 1.6 2007/12/02 19:09:16 wiz Exp $
Copyright (c) 2006 Garrett D'Amore
All rights reserved.
Written by Garrett D'Amore.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse
or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.Dd October 9, 2006 .Dt TM121TEMP 4 .Os .Sh NAME .Nm tm121temp .Nd Texas Instruments TMP121 temperature sensor .Sh SYNOPSIS .Cd "tm121temp0 at spi? slave 0" .Sh DESCRIPTION The .Nm driver provides support for the .Tn Texas Instruments (formerly .Tn Burr-Brown ) TMP121 temperature sensor with the .Xr envsys 4 API. These devices are connected to the host system with .Xr spi 4 or .Tn Microwire 4-wire serial busses. The .Nm is capable of measuring temperatures with a 2 degree accuracy over the frame from -40 to 125 Celsius. Temperatures are reported with a granularity of 625 microKelvins.
Copyright (c) 2006 Garrett D'Amore
All rights reserved.
Written by Garrett D'Amore.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse
or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.Dd October 9, 2006 .Dt TM121TEMP 4 .Os .Sh NAME .Nm tm121temp .Nd Texas Instruments TMP121 temperature sensor .Sh SYNOPSIS .Cd "tm121temp0 at spi? slave 0" .Sh DESCRIPTION The .Nm driver provides support for the .Tn Texas Instruments (formerly .Tn Burr-Brown ) TMP121 temperature sensor with the .Xr envsys 4 API. These devices are connected to the host system with .Xr spi 4 or .Tn Microwire 4-wire serial busses. The .Nm is capable of measuring temperatures with a 2 degree accuracy over the frame from -40 to 125 Celsius. Temperatures are reported with a granularity of 625 microKelvins.
p .Nm devices can transfer information at up to 10MHz, and support SPI mode 0.
p The device reports itself with .Xr envsys 4 using the generic device name. This name can be overridden, by specifying an alternate name in the device property .Dq envsys-description . .Sh SEE ALSO .Xr envsys 4 , .Xr spi 4 , .Xr envstat 8 .Sh HISTORY The .Nm driver was written by .An Garrett D'Amore and first appeared in .Nx 4.0 .
Indexes created Sun Sep 21 15:09:59 GMT 2025