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manual/dragon410c/dragon410c-user-led

Description

Test if user LED working on Dragonboard 410c.

Maintainer

  • amit.khare@linaro.org

OS

  • android
  • debian

Scope

  • functional

Devices

  • apq8016-sbc

Steps to reproduce

  • Boot the board successfuly.
  • The four user LEDs on board are apq8016-sbc:green:user0, apq8016-sbc:green:user1, apq8016-sbc:green:user2 and apq8016-sbc:green:user3.
  • To turn on specific LED, run "echo 1 > /sys/class/leds//brightness"
  • To turn off specific LED, run "echo 0 > /sys/class/leds//brightness"
  • Run "cat /sys/class/leds//trigger" to show all the triggers available for a particular LED.
  • To assign a trigger to any LED, run "echo trigger_name > /sys/class/leds//trigger"
  • {'example': 'to assign "heartbeat" trigger to apq8016-sbc:green:user3'}
  • run "echo heartbeat > /sys/class/leds/apq8016-sbc\:green\:user3/trigger"
  • To remove trigger for any LED, run "echo none > /sys/class/leds//trigger"