Improved documentation for interrupt handling

[blm768]

I've been working on a GD32vf103-based project that looks like it'll require some interrupt handlers. Unfortunately, the official documentation for the chip doesn't seem to have a lot of information (at least in the English-language documents I've found so far), and I haven't had much luck figuring things out from this HAL's docs, either.

If there's anyone who's willing to provide some initial guidance on how to use the existing interrupt-handling code in this crate, I'd be happy to help write docs and/or polish the API.

[khrs]

Hi,

Here you can find my original code i used to test ECLIC
https://gist.github.com/khrs/6978bbff8014d2251e636eac4e7db397

Here you can find a docs i used when implementing ECLIC
https://doc.nucleisys.com/nuclei_spec/isa/eclic.html#

[blm768]

Awesome; thanks! I'll take a look.