Waveform selection and other CC messages.

[souravlal]

Hi marcel license,
How can I select different waveforms in this ESP32 basic Synth, is it using buttons? Or knobs? I made an Arduino based midi HAT for this ESP32 basic Synth, which sits on top of the ESP32 Audio Kit. I have looked your midi messages on z config file and tried to send the exact same midi massages but it seems like only 3-4 knobs while rotated seems to have some effect on the audio output others not, all the knobs sends messages successfully I have checked it with midi monitor.
The thing I want to know is how to change and select waveforms, what are the options I have for creating interesting sounds? Is buttons are used to send one time CC messages or toggle CC messages?