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What: /sys/class/leds/<led>/device/brightness
Date: July 2020
KernelVersion: 5.9
Contact: Marek Behún <kabel@kernel.org>
Description: (RW) On the front panel of the Turris Omnia router there is also
a button which can be used to control the intensity of all the
LEDs at once, so that if they are too bright, user can dim them.
The microcontroller cycles between 8 levels of this global
brightness (from 100% to 0%), but this setting can have any
integer value between 0 and 100. It is therefore convenient to be
able to change this setting from software.
Format: %i
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