This directory contains libraries specifically targeting the RP2040 or possible future related devices. It is selected when
PICO_PLATFORM=rp2040 (the default) is specified for the build
hardware_ libraries exist for individual hardware components to provide a simple API
providing a thin abstraction hiding the details of accessing the hardware registers directly.
pico_ provides higher level functionality you might generally find in say an OS kernel, as well
as runtime support familiar to most C programmers.