misterbo the highest possible baud rate for Bela is 230400
Over UART? I have definitely done 4x time that ...
misterbo but it's not easy to set the STM32 chip to work as SPI slave
it should not be too hard in my - albeit limited - experience.
Another option is to use (abuse?) one of the audio data lines for this purpose (SAI or I2S). But then, does the isseu with the STM32 being a SPI slave persist even when using its SAI or I2S peripherals?