FFT on PRU

Hi,

Is there any library for do FFT calculations on the PRU??

thanks

Hi,

Is there any library for do FFT calculations on the PRU??

If such exists or technically feasible :slight_smile:

It’s unlikely that you’ll find a complete solution running on PRUSS, since PRU assembler has very limited math capability (+, -, * and boolean operators). Division is not supported (except by factors of 2) and trigonometry is far beyond the scope.

But it should be possible to generate a hybrid solution with look-up tables, pre-computed on the host CPU and the PRU doing the simple math. I haven’t seen such a solution yet.

Happy coding, share your results!

BR