Resources seem to include both micro and macro.
Riffing off of Max's post, I'll post that micro resources are tied to the action economy.
Movement
Action (anything that is a non-resource attack, like a bow show, cantrip, showve, dagger thrust)
Bonus Action
Reaction
Interaction- where the tools, caltrops, flaming oil, holy water, and such can come into play.

Macro resources seem to begin with long rest spells and abilities.

I dont' know where short rest spells and abilities fit, but I think macro.

HP as a resource: macro, micro, not sure, and I think that AC and HP are inextricably related for assessment purposes.

Just spit balling here.