NAME
tm121temp —
Texas Instruments TMP121 temperature
sensor
SYNOPSIS
tm121temp0 at spi? slave 0
DESCRIPTION
Thetm121temp 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
HISTORY
The tm121temp driver was written by
Garrett D'Amore and first appeared in
NetBSD 4.0.