I thought I might share with you what I found recently with the Teensy project. I will most likely invest into this little guy soon...
Teensy Audio Library, high quality sound processing in Arduino sketches on Teensy 3.1
![\"image\"](\"https://ec.yimg.com/ec?url=http%3A%2F%2Fwww.pjrc.com%2Fteensy%2Ftd_libs_Audio_gui.png&t=1572482069&sig=ye4f4cJnC6eXM6w7BMaIBA--~E\") | ||||
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They have developed a very nice setup you may want to check into.. helps most the hard work is already done.
Here someone built a nice little synth with it.
Teensy Polyphonic Synth
![\"image\"](\"https://ec.yimg.com/ec?url=https%3A%2F%2Fi.ytimg.com%2Fvi%2FKbcNqarBTsI%2Fmaxresdefault.jpg&t=1572482069&sig=2z6OzhJL9g16O.ctU6zBYw--~E\") | ||||
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The teensy is not a STM32. Think it is a Cortex M4
as for the STM32, did you ever run across this board?
ST STM32VL-Discovery ARM Development Tool; Value Line USB Demo Board Kit MCU USA | eBay
![\"image\"](\"https://ec.yimg.com/ec?url=http%3A%2F%2Fi.ebayimg.com%2Fimages%2Fi%2F162011402303-0-1%2Fs-l1000.jpg&t=1572482069&sig=0b1aUidYNmTyEdax2iIQ0Q--~E\") | ||||
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evidently it has a debug feature built into it.. not sure but I'm guessing it will allow you to peek inside it and run code line by line to see what it is or is not doing..
/Blaine