Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
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Xiang Xiao 55e752ada8 Documentation/debugging: add stackusage tool documentation
Add RST documentation for the stackusage.py static stack analysis tool,
covering usage, command-line options, output format, and markers.

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2026-03-17 11:26:44 -03:00
.github build(deps): bump docker/build-push-action from 6 to 7 2026-03-09 08:55:41 +01:00
arch arch/xtensa/esp32s3: add CAM DVP imgdata driver 2026-03-16 17:26:27 -03:00
audio Makefile: Remove make depend files by make distclean 2026-02-16 16:27:57 +01:00
binfmt Makefile: Remove make depend files by make distclean 2026-02-16 16:27:57 +01:00
boards boards/lckfb-szpi-esp32s3: add gc0308 minimal defconfig 2026-03-16 17:26:27 -03:00
cmake libc: add support for C23 stdbit.h with bit manipulation macros 2026-03-02 09:09:40 -03:00
crypto Makefile: Remove make depend files by make distclean 2026-02-16 16:27:57 +01:00
Documentation Documentation/debugging: add stackusage tool documentation 2026-03-17 11:26:44 -03:00
drivers drivers/video: add GC0308 VGA CMOS image sensor driver 2026-03-16 17:26:27 -03:00
dummy build: add initial cmake build system 2023-07-08 13:50:48 +08:00
fs fs/mnemofs: Add portable bit primitives and cleanup hash functions 2026-03-11 15:07:43 -03:00
graphics Makefile: Remove make depend files by make distclean 2026-02-16 16:27:57 +01:00
include drivers/video: add GC0308 VGA CMOS image sensor driver 2026-03-16 17:26:27 -03:00
libs libs/libc: add configurable skip count for mutex backtrace addresses 2026-02-27 19:54:37 +08:00
mm mm: Fix Kconfig style 2026-03-12 09:08:18 +08:00
net netdev/netdev_ioctl: log in hex mode for ioctl cmd 2026-03-03 15:58:03 -03:00
openamp openamp: add patch for VIRTIO_RPMSG_F_BUFADDR buffer address support 2026-03-05 12:39:13 +08:00
pass1 Makefile: Remove make depend files by make distclean 2026-02-16 16:27:57 +01:00
sched sched/critmon: Fix CPU load stats incorrect when using SCHED_CPULOAD_CRITMONITOR 2026-03-03 11:54:20 -05:00
syscall Makefile: Remove make depend files by make distclean 2026-02-16 16:27:57 +01:00
tools tools/stackusage.py: use toolchain binaries instead of Python libraries 2026-03-17 11:26:44 -03:00
video Makefile: Remove make depend files by make distclean 2026-02-16 16:27:57 +01:00
wireless drivers/net: remove nxsig_notification when signal support is disabled 2026-02-26 20:03:05 +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 feat: add a GitHub action to lint the YAML files 2020-12-15 09:52:04 -06:00
AUTHORS AUTHORS: add Donny Jiuzhu 2026-02-25 10:17:40 +01:00
CMakeLists.txt cmake: Enhance .config handling and comparison logic 2026-02-26 09:46:02 -03:00
CONTRIBUTING.md doc: Contributing Guide updates. 2026-02-19 12:11:14 -05:00
INVIOLABLES.md INVIOLABLES.md: Fix a simple alignment and change occurrences of Nuttx 2020-09-03 01:33:05 +08:00
Kconfig tools/stackusage.py: use toolchain binaries instead of Python libraries 2026-03-17 11:26:44 -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 Remove the double blank line from source files 2022-02-20 20:10:14 +01:00
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

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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.