Wade Fife
524ac02aaf
The max FFT size was 4096, but we don't currently have any devices that can do that without modification. This is because, currently, the FFT size must be the same as the packet size, and the largest packet size supported by most devices is about 8000 bytes, or 2000 sc16 samples. Therefore, the largest FFT size supported without modifying other code is 1024 samples. This change frees up about 21% of the LUTs and 36% of the BRAM used by axi_fft and makes the software block controller and the IP agree on the maximum FFT size. Original-commit: 4f387c8ff0571deedc86dc459e94e555b9768282