Prerequisites toolchain https://github.com/kendryte
Test of HW FFT with Kendryte K210 / Sipeed M1 dock
build cmake .. -DPROJ=fft_lcd -DTOOLCHAIN=/opt/kendryte-toolchain/bin && make
flash sudo python3 kflash.py -p /dev/ttyUSB0 fft_lcd.bin
Specs http://dl.sipeed.com/MAIX/HDK/
Demo https://www.youtube.com/watch?v=HvBVj-QgaB8