Tang Nano RGB LED Example

This is a simple example for Sipeed Tang Nano FPGA board. It changes the color of onboard RGB LED periodically.

Sipeed Tang Nano FPGA Board Powered by GW1N-1 FPGA
https://www.seeedstudio.com/Sipeed-Tang-Nano-FPGA-board-powered-by-GW1N-1-FPGA-p-4304.html