Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
Find a file
wangchengdong 6c28a2b749 arm64/imx9: Replace spinlock/sched_lock with spin_lock_irqsave_nopreempt
Replace the spinlock/sched_lock pair in arm64/imx9 with
    spin_lock_irqsave_nopreempt() to improve code clarity and consistency.

Signed-off-by: Chengdong Wang wangchengdong@lixiang.com
2025-11-04 22:46:15 +08:00
.github build(deps): bump actions/download-artifact from 5 to 6 2025-10-27 19:47:03 +08:00
arch arm64/imx9: Replace spinlock/sched_lock with spin_lock_irqsave_nopreempt 2025-11-04 22:46:15 +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 binfmt: Add a configuration flag to store the module filename 2025-11-01 22:59:47 +08:00
boards arch: Enable event module for pcduino-a10 and smartl-c906 2025-11-04 21:43:59 +08:00
cmake cmake: correct nuttx_wildcard_sources cmake usage 2025-10-16 12:48:40 +08:00
crypto crypto/hmac: Fix typo in function implementation names 2025-08-13 23:11:02 +08:00
Documentation arch/risc-v/mpfs: Add MSS CAN driver. 2025-11-03 17:14:53 -03:00
drivers Documentation: Add description for early_syslog() 2025-10-31 08:29:17 -03:00
dummy
fs fs/fat: Ignore //... sequences in the file path 2025-10-23 08:44:12 -04:00
graphics sched/sleep: replace all Signal-based sleep implement to Scheduled sleep 2025-10-17 14:05:02 +08:00
include binfmt: Add a configuration flag to store the module filename 2025-11-01 22:59:47 +08:00
libs libs: remove not related comments from cmake files 2025-10-11 17:07:51 -04:00
mm mm/: remove reference to non-existent readme 2025-10-11 17:07:51 -04:00
net net/can/can_recvmsg.c: Cleanup can_readahead 2025-08-26 20:42:01 +08:00
openamp sched/clock: remove return value of clock_systime_timespec() 2025-10-10 23:15:27 +08:00
pass1 Revert "build depend:Revert Make.dep intermediate ddc file" 2024-09-15 19:29:47 +08:00
sched sched/event: Fix uninitialized need_switch flag issue in event_post() 2025-11-04 21:43:59 +08:00
syscall sched/gettid: Move thread ID to TLS 2025-04-08 22:53:10 +08:00
tools tools/nxgdb: Add gdb and statenames for TSTATE_WAIT_EVENT 2025-10-31 19:56:32 -03:00
video Revert "build depend:Revert Make.dep intermediate ddc file" 2024-09-15 19:29:47 +08:00
wireless sched/sleep: replace all Signal-based sleep implement to Scheduled sleep 2025-10-17 14:05:02 +08:00
.asf.yaml github: master branch protection tune. 2025-05-07 18:37:13 -05:00
.codespell-ignore-lines style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
.codespellrc codespellrc: add ist to ignorelist 2025-10-14 17:42:01 +08:00
.editorconfig .editorconfig: add .editorconfig file to help maintain coding style 2025-08-28 21:53:16 +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 Simone Falsetti 2025-07-15 15:12:44 -03:00
CMakeLists.txt nuttx/cmake: Remove redundant logic in CMake scripts 2025-10-20 10:08:28 +08:00
CONTRIBUTING.md style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
INVIOLABLES.md
Kconfig docs/config: Wrong term. 2025-10-23 16:46:31 +08:00
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 Documentation: move ReleaseNotes 2023-09-26 20:41:00 +08:00

POSIX Badge License Issues Tracking Badge Contributors GitHub Build Badge Documentation Badge

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.