Which method should be preferred to switch on and off e.g. USR3-LED?

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1

Hello,

the USR3 LED can be switched on and off by either
# echo 1 > /sys/class/leds/beaglebone::usr3/brightness
or
# echo 1 > /sys/devices/platform/leds-gpio/leds/beaglebone::usr3/
brightness

As both procedures work I am wondering which one is "better" or should
be preferred or what is the difference?

Best regards,
Michael

2

They are the same interface, the first one is preferred since that doens't require you to know that LED 3 is internally using the leds-gpio driver.

regards,

Koen