Because C++ is my language of choice and I did not find any other non-Python project doing this, I set out to get the LEDs on the 4mics_hat to work using C++ and without needing any additional dependencies or libraries (except the kernel headers). I put the result on GitHub (https://github.com/lowtraxx/respeaker_led_controller) for anyone that’s interested. I only have a RaspPi 3 B+ and the ReSpeaker 4mic_hat so I could not test on different configurations, but modifying it to work with others should be possible. This is my first foray into the world of RasPi development, so there may be a few rough edges. Comments and suggestions are always welcome. If you have something to add or fix, I always welcome push requests.
Hi there~
Thanks for the sharing and contribution.
Cheers.