Number of points for FFT computation on Alpha250

[gitul]

Hi Jean,

For the alpha250, I know it is possible to determine the number of points used (in the time domain) for the FFT computation as follows:

n_pts = driver.n_pts    # in time

However, is there a way to 'set' the number of points used? . For instance, instead of using 2^13 points (the default), I would like to use 2^15.

Thank you very much Raul

[jeanminet]

Hi Raul, The number of points used is hard wired in the FPGA. You need to recompile a FPGA bitstream to change it. Unfortunately, 2^13 points is the maximum FFT size that can fit on the programmable logic.

[gitul]

OK, thanks Jean. We can still work with 2^13 points. Raul