longan nano

Blink example using no external crate, the Peripherals Access Crate gd32vf103-pac, then using the Hardware Abstraction Layer gd32vf103xx-hal.

Requires rust nightly.

Check https://gitlab.com/jeancf/longan-nano-blink for the assembly version.

Simple project to explore programming for the Longan Nano (RISC-V) in assembly