I'm biased because I helped write part of it (and @balbi.sh has continued adding even more info!), but I think the `embassy-mcxa`'s DEVGUIDE is probably one of ... (opens in new tab)

I'm biased because I helped write part of it (and @balbi.sh has continued adding even more info!), but I think the `embassy-mcxa`'s DEVGUIDE is probably one of the better references now for "how embassy HALs work and how to write a good one", if that's what you're in to.