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ebaauw / homebridge-rpi

Homebridge plugin for Raspberry Pi.
Apache License 2.0
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PWR LED on RPI 3B+ #171

Closed yuvalyitz closed 9 months ago

yuvalyitz commented 10 months ago

Hi thanks for the package!

I'm trying to use it to control GPIO attached lights. I noticed that you've added a function to control the RPI power LED, for some reason, the brightness in my case is controlled through /sys/class/leds/led1/brightness. I revised getState and /opt/pigpio/access accordingly but it seems to still try and change to /sys/class/leds/PWR/brightness which is non-existing in my case, I suspect it since the Homebridge logs give me:

[1/13/2024, 6:52:52 AM] [rpi] rpi Power LED: On: warning: set: FO (104): no permission to access file (-137)

although I made /sys/class/leds/led1/brightness free to edit.

Do you think I can change another line to get it to control my power led?

ebaauw commented 10 months ago

You’re on an old version of Raspberry Pi OS. They changed the file to control the LED, see https://github.com/ebaauw/homebridge-rpi/issues/157.

The access file just configures which files pigpiod is allowed to access. The file being accessed is specified by the pigpio client (or in this case Homebridge RPi). See the commit to the above-mentioned issue for all the places you’d need to make the change.