unused RPi GPIO pins get reset about arduinoonpc-fastled-gfx-ledmatrix HOT 5 OPEN

Hi, glad that this lib is of interest to you.
Damn, that is perplexing, I'm honestly not sure why this is happening, nothing in my glue code touches GPIOs, and arduinoonpc wasn't even written for rPi, so it doesn't touch any GPIOs either.
My guess is that it has to be the rpi-rgb-panel lib, and that you have it configured in a way that it uses multiple channels. That library uses every single GPIO on 3 channels, so this is likely an initialization difference and it's blindly sending signals to other GPIOs you aren't using for panels

from arduinoonpc-fastled-gfx-ledmatrix.

Thanks for the quick reply 👍
Okay, and where is that lib?

from arduinoonpc-fastled-gfx-ledmatrix.

how do you initialize the matrix, using neomatrix_config? Please show me that code and/or confirm how many channels in parallel you init

from arduinoonpc-fastled-gfx-ledmatrix.

Yes, that's what I'm using to initialize. Here's my neomatrix_config.h file and the specific line setting the parallel number to 2:
https://github.com/PHimmel/matrix_control/blob/56e10096c305a0ddff4fd8bb00716739c8bac216/neomatrix_config.h#L1045

from arduinoonpc-fastled-gfx-ledmatrix.

Ok, try

1. Add #pragma message "hello" to that block, to make sure it is being selected by ifdef
2. set parallel to 1

from arduinoonpc-fastled-gfx-ledmatrix.