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LEDs are typically accessed through the Linux LED subsystem API.

All LEDs can be used as you wish and they are just named except the "Power" LED.

(For MX-4, refer to mx4-leds.)

Set LED⚓︎

echo heartbeat > /sys/class/leds/red:gps/trigger
# On
echo 1 >  /sys/class/leds/mx4-wifi/brightness
echo 1 >  /sys/class/leds/mx4-wifi-red/brightness
# Off
echo 0 >  /sys/class/leds/mx4-wifi/brightness
echo 0 >  /sys/class/leds/mx4-wifi-red/brightness

Platform specific⚓︎