dsp.FFT does not work with HDL coder
2 views (last 30 days)
I have a code and a testbench code that I'm trying to convert to VHDL.
The code uses FFT. When I use canned FFT, I get "Function 'fft' not supported for fixed point conversion" at "Verify" step of Fixed Point Conversion".
When I instead use dsp.FFT it instead complains about ' "dsp.FFT" cannot be displayed ' at the Analyze step of fixed point converions.
I cannot use dsphdl.FFT since we don't have the license for that.
Can this be solved or do we need to buy dsphdl.FFT?
Incidentally, is there a real-to-complex FFT, taking N real points and returning N/2+1 complex ones like FFTW or np.fft.rfft in python? Using complex FFT on real data wastes resource by a factor of 2, but all the examples seem to be using that.