Could you try the following and let me know the output?
sudo xc3sprog -j -c sysfsgpio_creator
Since you have a MATRIX Creator, the command to check your FPGA connection is a bit different than the one you tried above. If your FPGA can be detected, we can go from there into diagnosing why it’s not working when running example code.
Maybe this needs a new thread so I dont get emails.
By the way… this was never resolved for me… i returned the device in June… and STILL havent received a refund. Newark is horrible to deal with, and Matrix did not return my emails. Caution.
To confirm, do you have a MATRIX Creator or MATRIX Voice?
Can you send me the output of
sudo xc3sprog -j -c sysfsgpio_creator
Additionally, since it seems you have the MATRIX kernel modules installed, can you send me the output of arecord -l and let me know if recording audio with the following command works?