Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.
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Keith Packard 57c2a3598c drivers/flash: Fix #if condition for is_area_readable for mcux 4 weeks ago
.github Revert "ci: exclude rust temporarily [REVERT ME]" 1 month ago
arch arch/x86: Support picolibc with zefi 4 weeks ago
boards boards: qemu_rx: remove zephyr-gnu toolchain 4 weeks ago
cmake cmake: Support both toolchain directory layouts 4 weeks ago
doc linker_script: Remove all SUBALIGN usage for iterable sections 4 weeks ago
drivers drivers/flash: Fix #if condition for is_area_readable for mcux 4 weeks ago
dts dts: esp32c2: esp8684: Add GDMA support 4 weeks ago
include/zephyr arch/rx: Add missing linker script fragments 4 weeks ago
kernel kernel: Guard SYS_CLOCK_HW_CYCLES_PER_SEC to avoid spurious empty macro 1 month ago
lib posix: Use 'char' for posix_condattr bitfields 4 weeks ago
misc license: Remove non-copyrightable license 4 months ago
modules modules/hal_rpi_pico: Switch boot_stage2 to picolibc 4 weeks ago
samples samples/zbus: Increase dyn_channel stack sizes 4 weeks ago
scripts scripts/logging: Add RX config detection 4 weeks ago
share sysbuild: Import image devicetrees 2 months ago
snippets drivers: video: sw_generator: convert to use the devicetree 1 month ago
soc soc/esp32c6: Discard .note.GNU-stack sections while linking 4 weeks ago
submanifests modules: optional: rust: Fixes for CI 1 month ago
subsys fs/ext2: Missing error check in ext2_inode_remove_blocks 4 weeks ago
tests tests/nrf: Use memcpy instead of strncpy to avoid gcc warnings 4 weeks ago
.checkpatch.conf checkpatch: Adapt the braces check to Zephyr 6 months ago
.clang-format clang-format: add new line at EOF. 3 months ago
.codechecker.yml tests: Add a CodeChecker config file 10 months ago
.codecov.yml yamllint: fix all yamllint comments errors 3 years ago
.editorconfig editorconfig: Improve verbosity 3 years ago
.gitattributes
.gitignore scripts: ci: add vermin (min python version check) 1 month ago
.gitlint gitlint: Fix dependabot exception 3 months ago
.mailmap mailmap: remove duplicate emails and normalize mapping entries 6 months ago
.ruff-excludes.toml scripts: logging: dictionary: log_parser: Fix linter issues 4 weeks ago
.ruff.toml scripts: Update and lock ruff 7 months ago
.yamllint scripts: compliance: add support for YAMLLint 3 years ago
CMakeLists.txt cmake: Delay computation of linker paths until needed 4 weeks ago
CODEOWNERS ci: add empty CODEOWNERS file 3 months ago
CODE_OF_CONDUCT.md coc: Update Code of Conduct to latest Contributor Covenant 2 years ago
CONTRIBUTING.rst
Kconfig
Kconfig.constants kconfig: Add variables for integer constants 12 months ago
Kconfig.zephyr Use SPEED_OPTIMIZATIONS on riscv for GCC 14.3 4 weeks ago
LICENSE
MAINTAINERS.yml MAINTAINERS: Add maintainer for ITE EC platform and drivers 4 weeks ago
README.rst doc: remove more occurances of Nios II 2 months ago
SDK_VERSION ci: use new docker image v0.28.0.20250523 2 months ago
VERSION VERSION: bump to 4.1.99 4 months ago
version.h.in version.h.in: fix cmake comment 1 month ago
west.yml west: Add mbedtls fix for gcc 14.3 4 weeks ago
zephyr-env.cmd
zephyr-env.sh

README.rst

.. 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`_
| 🛡<span class="escaped-code-point" data-escaped="[U+FE0F]"><span class="char">️</span></span> `Security Advisories Repository`_
| ⚠<span class="escaped-code-point" data-escaped="[U+FE0F]"><span class="char">️</span></span> 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