AttributeError: 'rgbmatrix.core.RGBMatrix' object has no attribute 'options'
I know this is a noob question but I am new to Python and would appreciate your help very much.
I tried to re-create the whole RGBMatrix object using a workaround, but then I am getting this error:
Can't set realtime thread priority=99: Operation not permitted.
You are probably not running as root ?
This will seriously mess with color stability and flicker
of the matrix. Please run as `root` (e.g. by invoking this
program with `sudo`), or setting the capability on this
binary by calling
sudo setcap 'cap_sys_nice=eip' /usr/bin/python3.9
Yes, I am running as root and I did call the setcap, but this has had no effect.
Might be a bit late, but i just started my own project with this api a couple of days ago.
To answer your two questions:
At least the bindinds of python does not have any reference to the options after cython initialized the object. The only things you can change afterwards are “luminanceCorrection”, “pwmBits”, “brightness”, “height” and “width”. You can check out the doc here core.pyx
As also mention in his endless pages of explanation, the api does drop priviliges after initializing the hardware, so you cant recreate another instance of the RGBMatrix without an error. If you want to prevent that you can
(A) use the flag –led-no-drop-privs or
(B) change the value from options.drop_privileges = False
I didnt tested this so far, since i dont know a reason to change the matrix afterwards, but as of my understand this should be a workaround.
"You need to start programs as root as it needs to access some low-level hardware at initialization time. After that, it is typically not desirable to stay in this role, so the library then drops the privileges.
This flag allows to switch off this behavior, so that you stay root. Not recommended unless you have a specific reason for it (e.g. you need root to access other hardware or you do the privilege dropping yourself)."
