Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
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raul_chen 0d2993dd87 Documentation/net: document lower-half driver performance tuning
Add a "Performance tuning" section to the network driver guide covering the
knobs that matter most for throughput on Wi-Fi lower-half drivers whose MAC
runs on a companion core: RX quota as backpressure, keeping the RX thread
priority at or below the vendor packet-delivery task, and capping the TCP
window / send buffer (backed by the shared IOB pool) on lossy wireless paths.

Signed-off-by: raul_chen <raul_chen@realsil.com.cn>
2026-07-13 11:53:26 +02:00
.github arch/arm/src/stm32: unify pulse count driver into common/stm32 2026-07-12 09:35:51 +08:00
arch arch/arm/ameba: fix open-network Wi-Fi association 2026-07-13 11:53:26 +02:00
audio include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
binfmt fs/binfmt: Enforce POSIX execute permissions prior to binary load 2026-06-13 21:07:01 +08:00
boards arch/arm/ameba: tune WHC Wi-Fi TCP throughput on both boards 2026-07-13 11:53:26 +02:00
cmake cmake/romfs: invoke passwd helper scripts via POSIX shell 2026-07-09 22:41:11 +08:00
crypto crypto: add CRYPTO_CHACHA20_DJB variant (64-bit counter/nonce) 2026-07-11 17:58:55 -03:00
Documentation Documentation/net: document lower-half driver performance tuning 2026-07-13 11:53:26 +02:00
drivers drivers/timers, sched/clock: use file_get/file_put 2026-07-11 17:22:07 -04:00
dummy build: add initial cmake build system 2023-07-08 13:50:48 +08:00
fs fs/procfs: fix incorrect environ read for another task under CONFIG_ARCH_ADDRENV 2026-07-11 12:43:10 -03:00
graphics !include/fcntl.h: align open flags with Linux values 2026-06-30 13:43:44 +08:00
include crypto: add CRYPTO_CHACHA20_DJB variant (64-bit counter/nonce) 2026-07-11 17:58:55 -03:00
libs libs/libdsp: Add Matrix operations 2026-07-11 14:55:59 -03:00
mm mm/umm_heap: disable KASAN for user-space heap in kernel build 2026-07-03 07:51:11 +02:00
net !include/fcntl.h: align open flags with Linux values 2026-06-30 13:43:44 +08:00
openamp openamp: fix CMake dcache option 2026-05-10 15:03:24 +02:00
pass1 Makefile: Remove make depend files by make distclean 2026-02-16 16:27:57 +01:00
sched drivers/timers, sched/clock: use file_get/file_put 2026-07-11 17:22:07 -04:00
syscall syscall: fcntl param3 type to uintptr_t 2026-04-27 12:01:55 -03:00
tools ci/platforms/darwin.sh: fix genromfs installation 2026-07-12 22:21:24 +02:00
video video: ensure video library is non-empty 2026-05-08 19:51:39 +08:00
wireless include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
.asf.yaml github: master branch protection tune. 2025-05-07 18:37:13 -05:00
.codespell-ignore-lines !boards: Remove NSH_ARCHINIT and board_app_initialize 2026-05-02 18:36:46 +08:00
.codespellrc arch/sim: replace macOS C++ constructor runtime hack with post-link patch 2026-05-19 07:08:55 -03:00
.editorconfig .editorconfig: fix character encoding property specification 2025-11-28 19:12:13 +08:00
.gitignore git: Specify multiple build directories in .gitignore. 2026-05-20 03:06:58 +08:00
.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 Eren Terzioglu 2026-05-20 15:17:00 +08:00
CMakeLists.txt cmake/nuttx_toolchain.cmake: track preprocessed include deps 2026-06-04 17:22:43 +08:00
CONTRIBUTING.md contributing: Add requirement for 'Assisted-by' commit field 2026-07-12 09:42:28 +08:00
INVIOLABLES.md INVIOLABLES.md: Fix a simple alignment and change occurrences of Nuttx 2020-09-03 01:33:05 +08:00
Kconfig sched/misc/assert: Add CONFIG_SCHED_DUMP_TASKS and CONFIG_SCHED_DUMP_STACK 2026-06-09 08:04:54 -04:00
LICENSE libs/libdsp: Add Matrix operations 2026-07-11 14:55:59 -03:00
Makefile !boards: enforce secure ROMFS passwd and TEA key setup 2026-07-09 22:41:11 +08:00
NOTICE Remove the double blank line from source files 2022-02-20 20:10:14 +01:00
README.md ci/testing: Add MemBrowse Integration 2026-06-18 12:07:41 -03:00
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.