Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
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zhanghongyu 24ee7cba86 net_lock: add net_sem_timedwait2, passing in rmutex that needs to be break
two rmutexes can be passed in, and later the wait scenarios that require
break the conn and netdev locks will be replaced.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2026-01-01 07:35:12 -03:00
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arch xtensa/esp32s3: fix dcache flush error in up_flush_dcache 2026-01-01 07:26:25 -03:00
audio
binfmt
boards boards/xtensa/esp32s3: Add ostest defconfig 2026-01-01 17:03:20 +08:00
cmake
crypto
Documentation sched/task: fix Redundant memory allocation. 2026-01-01 07:25:04 -03:00
drivers drivers/i2c: add ioexpander-based lower-half implementation for I2C bit-bang 2026-01-01 17:08:47 +08:00
dummy
fs fs/file: add reference count protection for stack-allocated file structures 2026-01-01 17:06:17 +08:00
graphics
include net_lock: add net_sem_timedwait2, passing in rmutex that needs to be break 2026-01-01 07:35:12 -03:00
libs libc/syslograwstream: Use memrchr to locate the newline character 2026-01-01 17:03:50 +08:00
mm mm/iob:support iob queue concat to another iob queue 2026-01-01 17:03:29 +08:00
net net_lock: add net_sem_timedwait2, passing in rmutex that needs to be break 2026-01-01 07:35:12 -03:00
openamp
pass1
sched sched/task: fix Redundant memory allocation. 2026-01-01 07:25:04 -03:00
syscall
tools toos/scipts: add script to find symbol caller 2025-12-31 08:47:23 -03:00
video
wireless
.asf.yaml
.codespell-ignore-lines
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.editorconfig
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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.