NAME
tm121temp
- Texas Instruments TMP121 temperature sensor
SYNOPSIS
tm121temp0 at spi? slave 0
DESCRIPTION
The
tm121temp
driver provides support for the
Texas Instruments
(formerly
Burr-Brown)
TMP121 temperature sensor
with the
envsys(4)
API.
These devices are connected to the host system with
spi(4)
or
Microwire
4-wire serial busses.
The
tm121temp
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.
tm121temp
devices can transfer information at up to 10MHz, and support
SPI mode 0.
The device reports itself with
envsys(4)
using the generic device name.
This name can be overridden, by specifying an alternate name in the device
property
``envsys-description''.
SEE ALSO
envsys(4),
spi(4),
envstat(8)
HISTORY
The
tm121temp
driver was written by
Garrett D'Amore
and first appeared in
NetBSD4.0.