Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
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Marco Casaroli 7942d18fd5 sched/task: Do not log a missing or unloadable program as an exec error.
posix_spawn() and execve() logged every failed exec at error level.  A
shell normally tries a program first: NSH with CONFIG_NSH_FILE_APPS
spawns each command from PATH before its built-in command, and bash
runs a script itself when execve() returns ENOEXEC.  So every built-in
NSH command printed

  nxposix_spawn_exec: ERROR: exec failed: 2

although nothing was wrong.  The caller gets the error code and reports
it if it needs to.

Do not log ENOENT and ENOEXEC.  Other errors are logged as before.

Assisted-by: Claude Code:claude-opus-5-5
Signed-off-by: Marco Casaroli <marco.casaroli@gmail.com>
2026-10-09 19:52:55 +08:00
.github build(deps): bump docker/setup-buildx-action from 4.3.0 to 4.4.1 2026-09-21 16:28:50 +08:00
arch arch/xtensa/esp32s3: Make SPI CS, MOSI and MISO pins signed. 2026-10-09 18:29:04 +08:00
audio audio: Fix the build with CONFIG_AUDIO_MULTI_SESSION. 2026-10-08 15:52:09 -03:00
binfmt binfmt: copy argv and file actions once, bounded 2026-10-09 14:48:44 +08:00
boards boards/arm/stm32l4/nucleo-l432kc: Add support for external W25 SPI flash. 2026-10-09 18:29:41 +08:00
cmake cmake/nuttx_add_romfs.cmake: Improved process_all_directory_romfs function 2026-10-05 18:42:56 +08:00
crypto crypto: fix chacha constants under GCC 15. 2026-09-20 08:22:11 -03:00
Documentation Documentation/netutils: add comprehensive guide for webclient 2026-10-09 18:26:40 +08:00
drivers drivers/crypto/se05x: nxstyle in pnt_se05x_api.c 2026-10-09 18:30:34 +08:00
dummy
fs fs/v9fs: Set st_ino and d_ino from the qid path. 2026-10-09 06:12:58 -03:00
graphics graphics/nxterm: consume SGR escape sequences 2026-08-23 10:46:02 +08:00
include sensors: add ccs811 eCO2/TVOC driver 2026-10-09 18:27:21 +08:00
libs arch/arm64: Save d8-d15 in setjmp() and make jmp_buf hold them. 2026-10-09 06:11:29 -03:00
mm mm/iob: fix CONFIG_NET_TIMESTAMPING typo in iob_alloc 2026-09-19 16:36:47 -03:00
net net/netdev: add NETDEV_TX_STAMP and handle SIOCETHTOOL ETHTOOL_GET_TS_INFO 2026-09-28 12:53:24 -03:00
openamp cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
pass1 tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
sched sched/task: Do not log a missing or unloadable program as an exec error. 2026-10-09 19:52:55 +08:00
syscall fs: add chroot() syscall 2026-09-20 22:27:38 +08:00
tools tools/nxstyle: allow the NXP Plug&Trust names 2026-10-09 18:30:34 +08:00
video video/videomode: Fix EDID parsing and formatting of video mode dumps 2026-08-29 11:09:11 -03:00
wireless wireless/bluetooth: Validate Number Of Completed Packets event. 2026-09-25 10:35:51 +02:00
.asf.yaml github: master branch protection tune. 2025-05-07 18:37:13 -05:00
.codespell-ignore-lines arch/arm/ra8m1: Add GPT timer support 2026-10-01 23:12:10 +08:00
.codespellrc zbus: Add linker support and documentation for the zbus port 2026-09-21 08:40:14 -03:00
.editorconfig .editorconfig: fix character encoding property specification 2025-11-28 19:12:13 +08:00
.gitignore boards/risc-v/eic7700x: Adopt the common board layout. 2026-08-19 01:40:57 +08:00
.gitmessage docs/contributing: Add a commit message template 2025-06-03 17:33:24 +08:00
.mcp.json arch/risc-v/eic7700x: Describe and configure the pads. 2026-09-28 16:19:01 +08:00
.pre-commit-config.yaml
.yamllint
AUTHORS AUTHORS: add Jorge Guzman 2026-08-25 08:43:13 -04:00
CMakeLists.txt cmake: reconfigure when .config changes 2026-09-14 18:40:45 -03:00
CONTRIBUTING.md contributing: Add requirement for 'Assisted-by' commit field 2026-07-12 09:42:28 +08:00
INVIOLABLES.md
Kconfig arm/nrf54l: add Bluetooth SoftDevice Controller support 2026-10-02 15:37:12 -03:00
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
README.md docs: improve getting started guidance 2026-10-09 18:40:55 +08:00
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. For first-time contributors, building the simulator locally is a useful way to verify the development environment before submitting changes.

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.