External source code integration request: Raspberry Pi Pico SDK

[coderkalyan]

Origin

Raspberry Pi Foundation - Pico SDK
https://github.com/raspberrypi/pico-sdk

Purpose

Register/struct definitions, runtime, and HAL for the Raspberry Pi RP2040 SoC and derivatives.

Mode of integration

I'd like to integrate this as a module (something like modules/hal/pico-sdk). I am not completely sure about the layout yet but I think I will copy just the register and struct definitions into a new repository, since the higher level HAL seems to have some dependencies I'd rather not have (C11 and newlib) and the runtime/other infrastructure in the original SDK is unecessary since zephyr implements a lot of it already.

Pull Request

TODO, coming soon. Will post when I have a draft ready.

Description

Long description that will help reviewers discuss suitability of the
component to solve the problem at hand (there may be a better options
available.) Will be used to implement peripheral APIs for the RP2 series MCUs. I have an unfinished port of zephyr to this SoC locally, will open a PR when it is ready.

What is its primary functionality? Official vendor HAL for RP2 series of MCUs.

What problem are you trying to solve? N/A

Why is this the right component to solve it Official vendor HAL - only option right now, also licensed under BSD 3 clause, and the codebase itself is quite clean and lightweight.

Dependencies

Original SDK requires C11 support and newlib libc, but I will select only the parts that are necessary to remove this dependency.

Revision

Master branch; or rather, a small section of it.

License

BSD-3-Clause

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