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"