Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
Find a file
liang.huang a5615419e7 arch/risc-v: dump backtrace when killing a task with SIGSEGV
When riscv_fault_handler() kills a user task with SIGSEGV, it previously
produced no stack trace, making the crash hard to diagnose.  Call
sched_dumpstack() on the killed task when SCHED_BACKTRACE is enabled.

Assisted-by: Claude Code:claude-sonnet-5
Signed-off-by: liang.huang <liang.huang@houmo.ai>
2026-07-26 17:10:20 +08:00
.github Documentation: PBKDF2 login docs, board Kconfig, and CI password 2026-07-21 20:19:14 +08:00
arch arch/risc-v: dump backtrace when killing a task with SIGSEGV 2026-07-26 17:10:20 +08:00
audio drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-07-13 12:08:01 +02:00
binfmt elf:use elf symbol to parse attribute 2026-07-15 12:24:44 -03:00
boards boards/stm32f746g-disco: add explicit CRYPTO/CODECS deps for dropbear defconfig 2026-07-21 17:17:46 -04:00
cmake !tools/mkpasswd: PBKDF2 host tool and ROMFS passwd build integration 2026-07-21 20:19:14 +08:00
crypto crypto: add CRYPTO_AES_CTR_SSH variant (128-bit big-endian counter) 2026-07-16 15:42:10 +08:00
Documentation Documentation: PBKDF2 login docs, board Kconfig, and CI password 2026-07-21 20:19:14 +08:00
drivers drivers/spi/ice40: fix operator precedence in final clock cycle count 2026-07-20 17:05:01 +08:00
dummy
fs drivers/eeprom: I2C EEPROM Read/Write Kernel Operations Cause a Device Crash 2026-07-20 10:02:21 +02:00
graphics drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
include lib/math32: Avoid __uint128_t casts for LDC ImportC 2026-07-21 17:11:03 -03:00
libs spawn: allow zero stacksize/priority to use binary loader defaults 2026-07-15 12:24:44 -03:00
mm arch/mips: Add basic support for MIPS Creator CI20 board 2026-07-15 08:02:55 -03:00
net fix(net/igmp): restore General Query handling broken by pointer compare 2026-07-15 08:46:23 +02:00
openamp openamp: fix CMake dcache option 2026-05-10 15:03:24 +02:00
pass1
sched sched/backtrace: fix cross-CPU buffer access under addrenv 2026-07-20 21:01:28 -03:00
syscall
tools build(deps): bump pillow from 12.2.0 to 12.3.0 in /tools/pynuttx 2026-07-22 11:35:43 +08:00
video video: fix EDID standard timing decode 2026-07-17 15:00:50 -03:00
wireless drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
.asf.yaml
.codespell-ignore-lines !boards: Remove NSH_ARCHINIT and board_app_initialize 2026-05-02 18:36:46 +08:00
.codespellrc risc-v/gd32vw55x: add GigaDevice GD32VW553 port (Wi-Fi 6) 2026-07-16 10:03:16 -03:00
.editorconfig
.gitignore git: Specify multiple build directories in .gitignore. 2026-05-20 03:06:58 +08:00
.gitmessage
.pre-commit-config.yaml
.yamllint
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
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
README.md ci/testing: Add MemBrowse Integration 2026-06-18 12:07:41 -03:00
ReleaseNotes

POSIX Badge License Issues Tracking Badge Contributors GitHub Build Badge Documentation Badge MemBrowse

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.