I am having all sorts of problems trying to build a snap.
I’m trying to install my snap on an ubuntu server 19.10 running on RPi4 because I ran into issues supporting ALSA in the Raspian OS. I’m now getting different permission errors when running in a different OS.
The application uses several third party libraries. One such library is NeoPixel from Adafruit. The python library is getting an access denied error when trying to open
/proc/device-tree/compatible. They also try to open the
/proc/device-tree/model and gpio pins.
Is there some sort of document that explains which plug/slot provides which access?
How do I install the pi widget that provides the GPIO pins?
I can’t find any documentation describing how to install one. I tried
snap install pi with no success.