Hello  I'm trying to take an FFT on the FPGA after getting sampled data comes from XADC , but i couldn't get any results !  Here i figured out that the problem might be from the XADC's data , i tried to fix it but so far still no results .  In my design i'm inserting an analog input signal to VP/VN pins on XADC header , then i'm trying to get some data comes out from the 1MSPS XADC .  When i plot the output data it looks as it sampled correctly , but when i try to take its FF