This will just be a quick post to share my updated GD32 RISC-V pinout diagram. What makes this dev-board particularly interesting to me is the sheer number of GPIO pins and the fact that most of them are 5 volt tolerant which makes interfacing with older hardware really simple. The original pin-out diagram didn’t specify which pins were tolerant so I updated the diagram using the information in the datasheet for convenience.

Happy hacking!