NAME
hythygtemp —
Driver for IST-AG HYT-221/271/939
sensor chip via I2C bus
SYNOPSIS
hythygtemp* at iic? addr 0x28
DESCRIPTION
Thehythygtemp driver provides measurements from the
HYT-221/271/939 humidity/temperature sensors via the
envsys(4) framework. The hythygtemp
addr argument selects the address at the
iic(4)
bus. The sampling interval can be changed through the
sysctl(8) node hw.hythygtemp0.interval.
The sensor chips can be reconfigured to respond to other addresses than the default value of 0x28 by external utilities, like for example the pkgsrc/sysutils/hytctl package.
SYSCTL VARIABLES
The following sysctl(3) variables are provided:
- hw.hythygtemp0.interval
- Defines the sensor's sampling interval in seconds. It defaults to 50 seconds.
SEE ALSO
HISTORY
The hythygtemp driver first appeared in
NetBSD 7.0.
AUTHORS
The hythygtemp driver was written by
Frank Kardel
<kardel@NetBSD.org>
and Frank Wille ⟨phx@NetBSD.org⟩.