Instructions missing for accessing GPIO #273

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2019-11-29T19:17:15Z

cmgerdes commented

2019-11-29 19:17:15 +00:00

(Migrated from github.com)

I've ran into this issue twice. First when I first installed the plugin, then after when I had my sd card go bad and had to rebuild from scratch (this was a couple months ago).

It appears that you need to enable non-sudo access on the pi in order for the plugin to work. I can confirm at the very least I had to do this when Installed about 2 months ago from scratch.

Unfortunately, I didn't note down the exact steps I followed to fix this, but I believe what I did was this: https://raspberrypi.stackexchange.com/questions/40105/access-gpio-pins-without-root-no-access-to-dev-mem-try-running-as-root

So, I recommend adding the following step to the setup steps for the instructions:
sudo adduser pi gpio

You may also need to do this:

sudo chown root.gpio /dev/gpiomem
sudo chmod g+rw /dev/gpiomem

I plan on upgrading to a rpi 4 in the near future so I'll get a chance to confirm then that this is still an issue (I expect it will be) and exactly what needs to be done to fix it.

I've ran into this issue twice. First when I first installed the plugin, then after when I had my sd card go bad and had to rebuild from scratch (this was a couple months ago). It appears that you need to enable non-sudo access on the pi in order for the plugin to work. I can confirm at the very least I had to do this when Installed about 2 months ago from scratch. Unfortunately, I didn't note down the exact steps I followed to fix this, but I believe what I did was this: https://raspberrypi.stackexchange.com/questions/40105/access-gpio-pins-without-root-no-access-to-dev-mem-try-running-as-root So, I recommend adding the following step to the setup steps for the instructions: `sudo adduser pi gpio` You may also need to do this: ``` sudo chown root.gpio /dev/gpiomem sudo chmod g+rw /dev/gpiomem ``` I plan on upgrading to a rpi 4 in the near future so I'll get a chance to confirm then that this is still an issue (I expect it will be) and exactly what needs to be done to fix it.

vitormhenrique commented

2020-04-05 15:59:21 +01:00

(Migrated from github.com)

yeah, it really depends on how you install and get octoprint on your system, are you using octopi?

Thanks for coming back and documenting.

yeah, it really depends on how you install and get octoprint on your system, are you using octopi? Thanks for coming back and documenting.

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Reference: Gandalf/OctoPrint-Enclosure#273