Can accessing gpio with sudo, still have Make sure program is run as root with sudo

Question

Can accessing gpio with sudo, still have Make sure program is run as root with sudo

amiceli opened this issue 9 years ago · 3 comments

amiceli commented 9 years ago

I'ml trying to use my DHT11 sensor.
When I simpletest.py file, like this

sudo python simpletest.py

I always have this error : Make sure program is run as root with sudo

Thank you for your help

Answer 1 · 2016-02-20T12:39:34.000Z

@amiceli :
Try this:
sudo simpletest.py

Does that work?

Answer 2 · 2016-02-22T18:34:38.000Z

No I've the same error.

Answer 3 · 2016-04-25T20:30:32.000Z

Are you using the latest Raspbian Jessie release? I can't repro the same issue with Jessie. The code tries to do memory mapped access to the Pi's GPIO registers and if that fails then it can throw an error like you see warning to run as root with sudo (the most common reason for memory mapped GPIO to fail). If you're using a different Linux distro perhaps the root user doesn't have access to memory mapped GPIO (which would be really odd). Try the latest Raspbian Jessie release, thanks!