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