fft_fpga_dit

代码说明：

Decimation-In-Time Fast Fourier Transform I"ve tried to make the implementation simple and well documented. I have not tried to make it efficient. dit.v - Contains main module. buffer.v - Contains a module for a single butterfly step. generate_twiddlefactors.py - Contains function to generate a verilog file with twiddlefactors. twiddlefactors_N.v.t - Template used to generate verilog file. dut_dit.v - A wrapper around the "dit" module to allow verification with MyHDL. qa_dit.py - A MyHDL test bench for verification. Requires MyHDL, iverilog and numpy to be installed. pyfft.py - Generates output of intermediate FFT stages. Useful for debugging.