Is there any documentation anywhere about communication between the STM32 and ICE40 or is the best way to look through the firmware code?
Ok I am working on newer versions of the firmware to enable wider communication between the STM32 and Ice40, which will also be easier to uunderstand and hook into. Do you have specific data you need to exchange, do you want the STM32 to be the master and Ice40 the slave ?
Also this might help
Thanks for the reply.
Well I was looking at getting USB audio going on the STM side and using the ICE for fft/ift/convolution etc.
So I'm looking at streaming audio data to and from the ICE.
Is the only connection via SPI then?
Any update or documentation on this?
Take a look at this thread there are some folks using the DSPI link which is the fastest way.