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Manual Pages  — MAX44009

NAME

max44009 – driver for MAX44009 Ambient Light Sensor

CONTENTS

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 <Mt avg@FreeBSD.org>.

BUGS

The max44009 driver does not support illuminance thresholds and the corresponding interrupt.
MAX44009 (4) November 6, 2021
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