Am Dienstag, 11. August 2020 21:24:48 UTC+2 schrieb andrew...@gmail.com:
>
> Is python 3 not supported?
>

AFAIR I tested on python 2 and 3.

The message

(cannot open /dev/uio5)
>

is related to the uio_pruss driver. The interupt handler is either not 
present (command lsmod doesn't list uio_pruss, or command ls -l /dev/uio* 
has no output). Or you don't have write access to that file.

In any case you need to load the adapted uEnv.txt (uboot_overlay_pru 
modification). And it's also recommended to remove cape_universal=enable 
from the cmdline in order to get free pinmux access to all pins from user 
space.

Regards

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