I grabbed the image for Ubuntu on Raspberry PI over here https://ubuntu.com/download/raspberry-pi loaded a L928N python program via a virtualenv as the ubuntu user and got an error. Did some digging and some testing turned out to be ubuntu group could not access
/dev/gpiomem which belongs to
So the option I was left with was to run my python program as root but virtualenv was not really isolating my programs then. It appeared
sudo was pulling everything from root's global python setup. Seeing as I run a couple project on the raspberry pi having them overlap can cause me nights of frustration trying to understand why something broke (when a dep updates for one project and not another).
So I made
gpio which ubuntu user is apart of. Viola python, pip, virtualenv and my project worked without
sudo in a controlled isolated virtualenv!
Now a couple days later login run the program and it fails. Turns out
/dev/gpiomem reverted back to
Questions I have are A) is there a better way to give ubuntu access to
/dev/gpiomem B) is there a way to ensure that the group stays the same (assuming A is no).