Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
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wangchengdong c025cd96b4 sched/sched: Improve sched make and cmake scripts
Improve sched make and cmake scripts to select sched_processtimer.c
  and sched_timerexpiration.c separatly for tickless and non-tickless mode

Signed-off-by: Chengdong Wang <wangchengdong@lixiang.com>
2026-01-14 16:59:39 -08:00
.github .github/build.yml: fix python venv installation 2026-01-13 03:10:37 +08:00
arch arch/arm/src/am335x: CMake build implemented for TI AM335x Sitara 2026-01-15 01:14:26 +08:00
audio fs/file: unify prefix about file_xxx api, like file_open, file_ioctl 2025-06-12 18:12:42 +08:00
binfmt sched: binfmt remove csection 2026-01-11 20:44:35 +08:00
boards boards/esp32c3-xiao: Fix ble configuration crash 2026-01-14 18:43:53 +01:00
cmake cmake(enhance):add target we can dump all CMake lib targets 2026-01-14 23:07:32 +08:00
crypto LICENSE: update NuttX-PublicDomain SPDX identifier 2025-12-26 19:46:12 +08:00
Documentation tools[feat]: add config check tool 2026-01-14 17:50:18 +01:00
drivers drivers/pci:x86_64 calculate bar size 2026-01-15 02:19:57 +08:00
dummy
fs fs/mtd/proxy:Replaced heap allocation of temporary device names 2026-01-14 09:25:08 +08:00
graphics sched/sleep: replace all Signal-based sleep implement to Scheduled sleep 2025-10-17 14:05:02 +08:00
include fsetpos: makes the fsetpos function comply with POSIX standard 2026-01-15 02:22:46 +08:00
libs fsetpos: makes the fsetpos function comply with POSIX standard 2026-01-15 02:22:46 +08:00
mm mm/iob:support iob queue concat to another iob queue 2026-01-01 17:03:29 +08:00
net ipfrag: use netdev_iob_replace_l2 to replace d_iob 2026-01-15 01:55:19 +08:00
openamp openamp/libmetal: change the libmetal mutex to rmutex to avoid carsh 2026-01-04 21:06:10 +08:00
pass1 Revert "build depend:Revert Make.dep intermediate ddc file" 2024-09-15 19:29:47 +08:00
sched sched/sched: Improve sched make and cmake scripts 2026-01-14 16:59:39 -08:00
syscall syscall/adjtime: fix minior issue about adjtime and add clock_adjtime to syscall 2025-12-30 10:22:09 -03:00
tools tools[feat]: add config check tool 2026-01-14 17:50:18 +01:00
video Revert "build depend:Revert Make.dep intermediate ddc file" 2024-09-15 19:29:47 +08:00
wireless net/wireless: fix compile warning 2025-12-25 18:05:33 +08:00
.asf.yaml github: master branch protection tune. 2025-05-07 18:37:13 -05:00
.codespell-ignore-lines net/icmpv6: replace net_lock with conn_lock and conn_lock_dev 2025-12-29 09:42:18 +08:00
.codespellrc codespellrc: add ist to ignorelist 2025-10-14 17:42:01 +08:00
.editorconfig .editorconfig: fix character encoding property specification 2025-11-28 19:12:13 +08:00
.gitignore gitignore: add more vim swap files 2025-06-18 15:44:51 -04:00
.gitmessage docs/contributing: Add a commit message template 2025-06-03 17:33:24 +08:00
.pre-commit-config.yaml pre-commit: enable codespell checks 2025-05-05 12:34:39 +08:00
.yamllint
AUTHORS AUTHORS: add Michal Lenc 2025-12-03 08:46:33 -03:00
CMakeLists.txt ghs: move the -fmacro-prefix-map compile option to compiler specific 2026-01-13 21:20:21 +08:00
CONTRIBUTING.md style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
INVIOLABLES.md
Kconfig drivers/timers/ptp: support ptp clock driver model 2025-12-30 10:22:09 -03:00
LICENSE style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
Makefile tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
NOTICE
README.md Gathering community recommendations 2023-10-28 13:55:56 +08:00
ReleaseNotes

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Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).

For brevity, many parts of the documentation will refer to Apache NuttX as simply NuttX.

Getting Started

First time on NuttX? Read the Getting Started guide! If you don't have a board available, NuttX has its own simulator that you can run on terminal.

Documentation

You can find the current NuttX documentation on the Documentation Page.

Alternatively, you can build the documentation yourself by following the Documentation Build Instructions.

The old NuttX documentation is still available in the Apache wiki.

Supported Boards

NuttX supports a wide variety of platforms. See the full list on the Supported Platforms page.

Contributing

If you wish to contribute to the NuttX project, read the Contributing guidelines for information on Git usage, coding standard, workflow and the NuttX principles.

License

The code in this repository is under either the Apache 2 license, or a license compatible with the Apache 2 license. See the License Page for more information.