MAX44009(4)            FreeBSD Kernel Interfaces Manual            MAX44009(4)

NAME
     max44009 - driver for MAX44009 Ambient Light Sensor

SYNOPSIS
     To compile this driver into the kernel, place the following lines in your
     kernel configuration file:

           device max44009
           device iicbus

     Alternatively, to load the driver as a module at boot time, place the
     following line in loader.conf(5):

           max44009_load="YES"

DESCRIPTION
     The max44009 driver reports illuminance data from MAX44009 Ambient Light
     Sensor.

     The max44009 driver reports data via sysctl(8) entry in the device's node
     in the sysctl(8) tree:

     illuminance  The illuminance, in lux units.

     On an FDT(4) based system the following properties must be set:

     compatible  Must be set to "maxim,max44009".

     reg         The I2C address of max44009 which can be either 0x4a or 0x4b.

SEE ALSO
     fdt(4), iicbus(4), sysctl(8)

HISTORY
     The max44009 driver and this manual page was written by Andriy Gapon
     <avg@FreeBSD.org>.

BUGS
     The max44009 driver does not support illuminance thresholds and the
     corresponding interrupt.

FreeBSD 13.1-RELEASE-p6        November 6, 2021        FreeBSD 13.1-RELEASE-p6