How would I use this FFT for my 20khz sampled audio signal?

Created by: Magmanat

I am using windows, but i use windows subsystem for linux (WSL) to make the fft program and also to generate my FFT's

I am using a BASYS3 board with 100MHz clock, I want my FFT to be able to bin the audio signal of 20Khz sampling to around a 20Hz frequency resolution Is it possible to get some guidance to use this?

./fftgen -f 1024 -n 12 -m 6 -p 20 -k 5000

these are the current commands i use to generate my FT as i believe that to have 20Hz binning resolution it is 20Khz / 1024 which gives me 20Hz bins.

my pmod mic 3 outputs 12 bit data and i have an oled screen that has 64 pixels in height hence i put the output in 6 bits to be able to map my output to the oled screen

-p 20 as i saw that BASYS3 has DSP elements and hence this is more efficient

-k 5000 as i am currently using my 100Mhz clock while pushing in the 20khz samples

is this the correct implementation? or am i doing something wrongly