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
NetBSD 4.0.