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hzeller / rpi-rgb-led-matrix

Controlling up to three chains of 64x64, 32x32, 16x32 or similar RGB LED displays using Raspberry Pi GPIO
GNU General Public License v2.0
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Using keyboard input for python and raspberry pi 4 #1583

Closed pbullion closed 1 year ago

pbullion commented 1 year ago

I'm trying to use the console to change the running variable by just simply hitting enter or something on the keyboard. i keep striking out importing the keyboard from python.

Any ideas? have people run into this before? i get the must be running as root error, even tho i am. Thanks!

Screenshot 2023-08-21 at 6 48 21 PM
Scattercatt commented 9 months ago

I have run into this issue as well. I'm writing my program in python, and it seems like instantiating the RGBMatrix object does something to screw up privileges. Whenever I comment out the line, the keyboard.read_key() runs fine with no error. If I have it not commented out, I get the error OP is getting.

hzeller commented 9 months ago

The privileges are dropped by default to not run as root afterwards. https://github.com/hzeller/rpi-rgb-led-matrix/blob/a3eea997a9254b83ab2de97ae80d83588f696387/include/led-matrix.h#L422-L426 So you can change that by setting a different runtime option (there is an analog in the Python API).

Setting back the privileges should not really be a problem as you only need to be root in the beginning when you set up everything.

Scattercatt commented 9 months ago

Ah perfect thank you!