Apache NuttX is a mature, real-time embedded operating system (RTOS)
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David Sidrane 9175f3a9b6 s32k3xx:Serial refactor out tx dma semaphore
Fixes stuttering output.

  The use of the semaphore was causing blocking
  on non blocking callers. This ensured that
  the TX DAM would be restated, but when it
  was switched to trywait in 8362e314, it left
  data in the xmit queue unsent.

  This solution removes the semaphore and restart
  the DMA on completion if there is more data in
  the xmit queue to be sent.
2023-12-05 08:17:42 -08:00
.github build(deps): bump docker/build-push-action from 4 to 5 2023-09-18 13:33:40 +08:00
Documentation stm32f401rc-rs485: Add eeprom support 2023-12-04 00:34:14 -08:00
arch s32k3xx:Serial refactor out tx dma semaphore 2023-12-05 08:17:42 -08:00
audio Documentation: remove all migrated READMEs 2023-10-29 21:03:54 -03:00
binfmt sched/taskfiles: skip unnecessary file open/close operations to improve performance 2023-11-16 07:30:36 -08:00
boards Fix Kconfig style 2023-12-04 22:20:50 +08:00
cmake cmake:fix invalid configs when export defconfig and .config 2023-08-29 09:51:20 +08:00
crypto sched: explicitly select the cpuload clock source configuration 2023-11-01 09:27:56 +08:00
drivers Fix Kconfig style 2023-12-04 22:20:50 +08:00
dummy build: add initial cmake build system 2023-07-08 13:50:48 +08:00
fs fs/proc: Fix groupfd to get fd by group instead of current tcb 2023-12-04 21:37:28 -08:00
graphics poll: pollsetup should notify only one fd passd by caller 2023-11-21 09:07:17 +01:00
include fs/proc: Fix groupfd to get fd by group instead of current tcb 2023-12-04 21:37:28 -08:00
libs Fix -nan issue with f32 2023-12-01 18:49:46 -08:00
mm mm: Fix some typos 2023-11-24 09:57:10 -08:00
net poll: pollsetup should notify only one fd passd by caller 2023-11-21 09:07:17 +01:00
openamp openamp/libmetal: aligned io read/write when size=1,2,3,4 2023-11-17 09:42:52 +01:00
pass1
sched misc/rwlock:Implementing read/write locks. 2023-12-02 19:43:19 -08:00
syscall sched/semaphore: Move named semaphores to user space 2023-11-27 04:52:54 -08:00
tools ci_sim: the version of nodejs obtained by apt install is too low 2023-12-04 11:25:40 -08:00
video build: add initial cmake build system 2023-07-08 13:50:48 +08:00
wireless wireless/bluetooth: Add option to set the HCI TX thread affinity 2023-10-24 22:41:44 +08:00
.asf.yaml
.gitignore Documentation: port warnings_filter Sphinx extension from Zephyr 2023-11-28 09:18:29 -08:00
.yamllint
AUTHORS AUTHORS: add Tomek CEDRO to the list 2023-03-07 14:15:55 +01:00
CMakeLists.txt cmake: correct cmake rule file name 2023-10-21 11:00:27 +08:00
CONTRIBUTING.md Remove the tail spaces from all files except Documentation 2023-02-26 13:24:24 -08:00
INVIOLABLES.md
Kconfig debug/assert: decouple configuration of show file name feature 2023-10-20 02:22:48 +08:00
LICENSE seeed-xiao-rp2040: Add initial board support 2023-11-29 19:32:22 -08:00
Makefile
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

README.md

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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.