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Gerard Marull-Paretas 11d782ce56 cmake: modules: add support for board extensions
Board extensions are board fragments that may be present in any board
root folder, under `${BOARD_ROOT}/extensions/${BOARD}`. The board
extension directory may contain Kconfig fragments and/or devicetree
overlays.  Board extensions are automatically loaded and applied on top
of board files, before anything else. There is no guarantee on which
order extensions are applied, in case multiple exist.

Board extensions may be useful in the context of Zephyr modules, such as
`example-application`. In some situations, certain hardware description
or choices can not be added in the upstream Zephyr context, but they do
in a downstream project, where custom bindings or driver classes can
also be created. This feature may also be useful in development phases,
when the board skeleton lives upstream, but other board features are not
yet present.

Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>
2023-08-21 16:28:22 +02:00
.github ci: Bump checkout action to latest version 2023-08-16 14:59:16 +02:00
arch arch: arm64: Refine v8R AArch64 MPU regions switch 2023-08-21 13:27:07 +02:00
boards boards: arm: nucleo_l152re: add support for spi 2023-08-21 16:08:51 +02:00
cmake cmake: modules: add support for board extensions 2023-08-21 16:28:22 +02:00
doc cmake: modules: add support for board extensions 2023-08-21 16:28:22 +02:00
drivers input: gpio_keys: drop struct gpio_keys_data 2023-08-21 16:08:42 +02:00
dts dts: arm: st: l1: add spi3 2023-08-21 16:08:51 +02:00
include/zephyr Bluetooth: controller: Fix HCI ISO header RFU bit masking 2023-08-21 15:11:48 +02:00
kernel kernel: banner: Allow for customising version 2023-08-21 10:09:46 +02:00
lib lib: crc: move from lib/os to lib/crc 2023-08-18 08:52:16 +03:00
misc
modules drivers: ieee802154_nrf5: energy_detected api change adjust 2023-08-20 19:31:21 +02:00
samples samples: posix: uname: Set to 1cpu as shell_thread is not SMP-safe 2023-08-21 13:27:07 +02:00
scripts twister: print dut name when testing on hardware 2023-08-18 10:14:34 +02:00
share sysbuild: Support BUILD_ONLY images 2023-08-08 12:35:21 +00:00
snippets snippets: support for EXTRA_DTC_OVERLAY_FILE and EXTRA_CONF_FILE 2023-05-25 13:31:53 +00:00
soc arch: arm64: Refine v8R AArch64 MPU regions switch 2023-08-21 13:27:07 +02:00
submanifests
subsys Bluetooth: controller: Prevent slot reservation update for JIT scheduler 2023-08-21 15:11:54 +02:00
tests tests: subsys: rtio: Set to 1cpu as it is not SMP-safe 2023-08-21 13:27:07 +02:00
.checkpatch.conf
.clang-format clang-format: flag *_SECTION_FOREACH as for loop 2023-05-26 11:04:54 -05:00
.codecov.yml yamllint: fix all yamllint comments errors 2023-01-04 01:16:45 +09:00
.editorconfig
.gitattributes
.gitignore scripts: ci: check_compliance: add a no-modules Kconfig check 2023-07-05 09:11:02 +02:00
.gitlint
.mailmap mailmap: sort alphabetically 2023-05-15 13:23:32 -04:00
.yamllint scripts: compliance: add support for YAMLLint 2023-01-04 17:29:23 +01:00
CMakeLists.txt kernel: banner: Allow for customising version 2023-08-21 10:09:46 +02:00
CODE_OF_CONDUCT.md
CODEOWNERS MAINTAINERS: Update renesas-rcar platforms 2023-08-17 15:15:31 +02:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr arch: arm: aarch32: introduce CONFIG_BUILD_ALIGN_LMA 2023-08-16 14:53:58 +02:00
LICENSE
MAINTAINERS.yml MAINTAINERS: set Fabian as LVGL maintainer 2023-08-21 10:09:57 +02:00
README.rst
VERSION release: bump main to v3.4.99 2023-06-16 13:29:34 -04:00
version.h.in kernel: banner: Allow for customising version 2023-08-21 10:09:46 +02:00
west.yml manifest: hal_nordic: update 802.15.4 Radio Driver 2023-08-20 19:31:21 +02:00
zephyr-env.cmd
zephyr-env.sh

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <picture>
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   </a>

   <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img
   src="https://bestpractices.coreinfrastructure.org/projects/74/badge"></a>
   <a
   href="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml?query=branch%3Amain">
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The Zephyr Project is a scalable real-time operating system (RTOS) supporting
multiple hardware architectures, optimized for resource constrained devices,
and built with security in mind.

The Zephyr OS is based on a small-footprint kernel designed for use on
resource-constrained systems: from simple embedded environmental sensors and
LED wearables to sophisticated smart watches and IoT wireless gateways.

The Zephyr kernel supports multiple architectures, including ARM (Cortex-A,
Cortex-R, Cortex-M), Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V,
SPARC, MIPS, and a large number of `supported boards`_.

.. below included in doc/introduction/introduction.rst


Getting Started
***************

Welcome to Zephyr! See the `Introduction to Zephyr`_ for a high-level overview,
and the documentation's `Getting Started Guide`_ to start developing.

.. start_include_here

Community Support
*****************

Community support is provided via mailing lists and Discord; see the Resources
below for details.

.. _project-resources:

Resources
*********

Here's a quick summary of resources to help you find your way around:

* **Help**: `Asking for Help Tips`_
* **Documentation**: http://docs.zephyrproject.org (`Getting Started Guide`_)
* **Source Code**: https://github.com/zephyrproject-rtos/zephyr is the main
  repository; https://elixir.bootlin.com/zephyr/latest/source contains a
  searchable index
* **Releases**: https://github.com/zephyrproject-rtos/zephyr/releases
* **Samples and example code**: see `Sample and Demo Code Examples`_
* **Mailing Lists**: users@lists.zephyrproject.org and
  devel@lists.zephyrproject.org are the main user and developer mailing lists,
  respectively. You can join the developer's list and search its archives at
  `Zephyr Development mailing list`_. The other `Zephyr mailing list
  subgroups`_ have their own archives and sign-up pages.
* **Nightly CI Build Status**: https://lists.zephyrproject.org/g/builds
  The builds@lists.zephyrproject.org mailing list archives the CI nightly build results.
* **Chat**: Real-time chat happens in Zephyr's Discord Server. Use
  this `Discord Invite`_ to register.
* **Contributing**: see the `Contribution Guide`_
* **Wiki**: `Zephyr GitHub wiki`_
* **Issues**: https://github.com/zephyrproject-rtos/zephyr/issues
* **Security Issues**: Email vulnerabilities@zephyrproject.org to report
  security issues; also see our `Security`_ documentation. Security issues are
  tracked separately at https://zephyrprojectsec.atlassian.net.
* **Zephyr Project Website**: https://zephyrproject.org

.. _Discord Invite: https://chat.zephyrproject.org
.. _supported boards: http://docs.zephyrproject.org/latest/boards/index.html
.. _Zephyr Documentation: http://docs.zephyrproject.org
.. _Introduction to Zephyr: http://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: http://docs.zephyrproject.org/latest/develop/getting_started/index.html
.. _Contribution Guide: http://docs.zephyrproject.org/latest/contribute/index.html
.. _Zephyr GitHub wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _Zephyr Development mailing list: https://lists.zephyrproject.org/g/devel
.. _Zephyr mailing list subgroups: https://lists.zephyrproject.org/g/main/subgroups
.. _Sample and Demo Code Examples: http://docs.zephyrproject.org/latest/samples/index.html
.. _Security: http://docs.zephyrproject.org/latest/security/index.html
.. _Asking for Help Tips: https://docs.zephyrproject.org/latest/develop/getting_started/index.html#asking-for-help