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manual/hikey/hikey-user-led

Description

Test if user LED working on Hikey board.

Maintainer

OS

  • android
  • debian

Scope

  • functional

Devices

  • hi6220-hikey

Steps to reproduce

  • Boot the board successfuly.
  • There are four user LEDs on board user_led1, user_led2, user_led3 and user_led4.
  • 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 user_led3, run "echo heartbeat > /sys/class/leds/user_led3/trigger"'}
  • To remove trigger for any LED, run "echo none > /sys/class/leds//trigger"