Zephyr for the SAMD21 and CH32V series
  • C 75.8%
  • Max 16.5%
  • Python 3.9%
  • CMake 2.3%
  • Shell 0.5%
  • Other 0.9%
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Repository files (latest commit first)
Filename Latest commit message Latest commit date
Maureen Helm 2da2114960 release: Zephyr 4.4.1-rc1
Set version to v4.4.1-rc1.

Signed-off-by: Maureen Helm <maureen.helm@analog.com>
2026-06-03 10:39:23 -05:00
.github ci: workflows: doc-build: disable pa11y check temporarily 2026-06-02 17:14:17 -05:00
arch arm64: mmu: Address clang -Wunused-function warnings 2026-05-29 15:36:19 -05:00
boards boards nrf54lm20bsim: Change storage partition size to 512KiB 2026-05-29 15:36:36 -05:00
cmake cmake: Handle multiple shield when running menuconfig, etc targets 2026-04-24 10:19:45 -05:00
doc doc: migration: 4.4: add hint on how to set Kconfig values for NUM_IRQS 2026-05-19 15:10:32 -05:00
drivers drivers: bluetooth: esp32: align controller knobs with zephyr 2026-06-03 08:27:25 -05:00
dts dts: nxp: mcxw23: Fix faults caused by unaligned access on shared memory 2026-05-26 16:15:37 -05:00
include/zephyr linker: fix mapped-partition ROM_SIZE for non-XIP boot modes 2026-05-26 16:14:02 -05:00
kernel kernel: fix name of scheduler/wait queue: Dumb -> Simple 2026-04-13 11:09:25 -05:00
lib posix: mqueue: fix integer overflow in mq_open() buffer allocation 2026-05-27 10:31:48 -05:00
LICENSES LICENSES: Add note to README file 2025-11-13 17:34:51 +02:00
misc license: Remove non-copyrightable license 2025-02-26 22:04:51 +00:00
modules modules: mbedtls: add some other legacy include file for MCUboot 2026-04-14 13:36:18 -05:00
samples samples: espressif: spiram_test: add ESP32-S3 test entries 2026-05-01 16:19:54 -05:00
scripts arch: arm64: coredump: add FP and SP registers for correct GDB backtraces 2026-04-22 10:33:41 -05:00
share sysbuild: cmake: Use supplied image for variant source image 2026-03-16 19:06:50 -05:00
snippets snippets: wifi-credentials: Fix the heading 2026-04-14 10:38:40 -05:00
soc soc: esp32: pm: Register module LOG 2026-06-02 17:14:06 -05:00
submanifests modules: tflite-micro: update to latest main 2026-03-18 11:02:22 +09:00
subsys fs: ext2: validate directory entry structure before traversal 2026-06-03 08:27:04 -05:00
tests tests zbus proxy_agent ipc_backend: Exclude nrf5340bsim//cpunet 2026-05-27 10:31:19 -05:00
.checkpatch.conf checkpatch: ignore COMPARISON_TO_NULL 2025-11-07 08:24:21 -05:00
.clang-format drivers: i3c: use safe list iteration when detaching devices 2026-03-02 11:03:38 +01:00
.codechecker.yml tests: Add a CodeChecker config file 2024-09-12 10:04:05 +02:00
.codecov.yml yamllint: fix all yamllint comments errors 2023-01-04 01:16:45 +09:00
.editorconfig editorconfig: Trailing spaces are meaningful in patches 2025-10-21 14:14:57 +03:00
.gitattributes gitattributes: consider SVG files generated 2021-10-14 12:42:44 -04:00
.gitignore scripts: ci: add compliance check for device MMIO API usage 2026-04-03 14:51:27 -05:00
.gitlint gitlint: adapt configuration to deal with migration warnings 2025-07-22 19:31:06 -04:00
.mailmap mailmap: remove duplicate emails and normalize mapping entries 2025-01-09 14:14:10 +01:00
.ruff-excludes.toml twister: write unit tests to increase code coverage 2026-03-27 20:19:21 -04:00
.ruff.toml doc: build: ci: twister: Zephyr now requires Python 3.12 or higher 2026-02-26 21:25:03 +00:00
.yamllint scripts: compliance: add support for YAMLLint 2023-01-04 17:29:23 +01:00
CMakeLists.txt toolchain: add support for verilog memory hex dump output 2026-03-21 00:49:20 +00:00
CODE_OF_CONDUCT.md code of conduct: change the title from the template 2025-12-10 15:45:56 +00:00
CODEOWNERS ci: add empty CODEOWNERS file 2025-03-27 09:50:45 +01:00
CONTRIBUTING.rst doc: Fixed a link in CONTRIBUTING.rst 2019-02-28 12:46:04 -08:00
Kconfig kconfig: Clean up header comments and make them consistent 2019-11-04 17:31:27 -05:00
Kconfig.constants kconfig: Add variables for integer constants 2024-07-27 20:49:15 +03:00
Kconfig.zephyr kconfig: Fix Kconfigs wrongly appearing with mapped bindings 2026-04-07 11:35:15 -05:00
LICENSE add top level Apache 2.0 license file 2016-02-05 20:24:37 -05:00
MAINTAINERS.yml MAINTAINERS: merge Release and Release Notes areas 2026-04-14 13:19:09 -05:00
README.rst doc: remove more occurances of Nios II 2025-05-15 20:01:05 -04:00
REUSE.toml REUSE.toml: Default annotate json files 2025-12-20 09:16:24 +01:00
SDK_VERSION SDK_VERSION: Use Zephyr SDK 1.0.1 2026-03-30 18:06:16 -05:00
VERSION release: Zephyr 4.4.1-rc1 2026-06-03 10:39:23 -05:00
version.h.in version: add extraversion in version.h 2026-04-01 09:12:15 -05:00
west.yml drivers: bluetooth: esp32: align controller knobs with zephyr 2026-06-03 08:27:25 -05:00
zephyr-env.cmd scripts: remove west from scripts/ 2019-01-29 10:15:01 +01:00
zephyr-env.sh zephyr-env.sh: Use $XDG_CONFIG_HOME/zephry/zephyrrc if present 2025-06-25 15:33:06 -10:00

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <picture>
         <source media="(prefers-color-scheme: dark)" srcset="doc/_static/images/logo-readme-dark.svg">
         <source media="(prefers-color-scheme: light)" srcset="doc/_static/images/logo-readme-light.svg">
         <img src="doc/_static/images/logo-readme-light.svg">
       </picture>
     </p>
   </a>

   <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img src="https://bestpractices.coreinfrastructure.org/projects/74/badge"></a>
   <a href="https://scorecard.dev/viewer/?uri=github.com/zephyrproject-rtos/zephyr"><img src="https://api.securityscorecards.dev/projects/github.com/zephyrproject-rtos/zephyr/badge"></a>
   <a href="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml?query=branch%3Amain"><img src="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml/badge.svg?event=push"></a>


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, 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:

Getting Started
---------------

  | 📖 `Zephyr Documentation`_
  | 🚀 `Getting Started Guide`_
  | 🙋🏽 `Tips when asking for help`_
  | 💻 `Code samples`_

Code and Development
--------------------

  | 🌐 `Source Code Repository`_
  | 📦 `Releases`_
  | 🤝 `Contribution Guide`_

Community and Support
---------------------

  | 💬 `Discord Server`_ for real-time community discussions
  | 📧 `User mailing list (users@lists.zephyrproject.org)`_
  | 📧 `Developer mailing list (devel@lists.zephyrproject.org)`_
  | 📬 `Other project mailing lists`_
  | 📚 `Project Wiki`_

Issue Tracking and Security
---------------------------

  | 🐛 `GitHub Issues`_
  | 🔒 `Security documentation`_
  | 🛡️ `Security Advisories Repository`_
  | ⚠️ Report security vulnerabilities at vulnerabilities@zephyrproject.org

Additional Resources
--------------------
  | 🌐 `Zephyr Project Website`_
  | 📺 `Zephyr Tech Talks`_

.. _Zephyr Project Website: https://www.zephyrproject.org
.. _Discord Server: https://chat.zephyrproject.org
.. _supported boards: https://docs.zephyrproject.org/latest/boards/index.html
.. _Zephyr Documentation: https://docs.zephyrproject.org
.. _Introduction to Zephyr: https://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: https://docs.zephyrproject.org/latest/develop/getting_started/index.html
.. _Contribution Guide: https://docs.zephyrproject.org/latest/contribute/index.html
.. _Source Code Repository: https://github.com/zephyrproject-rtos/zephyr
.. _GitHub Issues: https://github.com/zephyrproject-rtos/zephyr/issues
.. _Releases: https://github.com/zephyrproject-rtos/zephyr/releases
.. _Project Wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _User mailing list (users@lists.zephyrproject.org): https://lists.zephyrproject.org/g/users
.. _Developer mailing list (devel@lists.zephyrproject.org): https://lists.zephyrproject.org/g/devel
.. _Other project mailing lists: https://lists.zephyrproject.org/g/main/subgroups
.. _Code samples: https://docs.zephyrproject.org/latest/samples/index.html
.. _Security documentation: https://docs.zephyrproject.org/latest/security/index.html
.. _Security Advisories Repository: https://github.com/zephyrproject-rtos/zephyr/security
.. _Tips when asking for help: https://docs.zephyrproject.org/latest/develop/getting_started/index.html#asking-for-help
.. _Zephyr Tech Talks: https://www.zephyrproject.org/tech-talks