Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
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raiden00pl 1a0032105d drivers/ioexpander/sx1509: implement the pin PWM operation
Implement ioe_setpwm for the SX1509 by mapping the duty cycle to the
LED driver ON intensity of the pin.

Assisted-by: Claude Code
Signed-off-by: raiden00pl <raiden00@railab.me>
2026-09-24 20:16:12 +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/risc-v/espressif: keep RTC backup data in DRAM without RTC memory 2026-09-24 09:54:28 +02:00
audio
binfmt libs/libc/elf, binfmt: Describe the GOT by base and size, not by index. 2026-09-08 16:31:16 -03:00
boards boards/thingy91: add rgb led support 2026-09-24 09:59:04 +02:00
cmake cmake: fix undefined function name in parse args error messages 2026-09-11 21:15:22 +08:00
crypto crypto: fix chacha constants under GCC 15. 2026-09-20 08:22:11 -03:00
Documentation drivers/ioexpander: add an optional pin PWM operation 2026-09-24 20:16:12 +08:00
drivers drivers/ioexpander/sx1509: implement the pin PWM operation 2026-09-24 20:16:12 +08:00
dummy
fs docs: document chroot jail root 2026-09-20 22:27:38 +08:00
graphics
include drivers/ioexpander: add an optional pin PWM operation 2026-09-24 20:16:12 +08:00
libs libc/stdio: allocate a buffer in getdelim() when *lineptr is NULL 2026-09-23 12:52:09 +08:00
mm mm/iob: fix CONFIG_NET_TIMESTAMPING typo in iob_alloc 2026-09-19 16:36:47 -03:00
net net/pkt: remove unused variable conn in append_timestamping 2026-09-19 18:32:45 -03:00
openamp
pass1
sched sched/module: Increase /proc/modules line buffer. 2026-09-22 13:27:42 +08:00
syscall fs: add chroot() syscall 2026-09-20 22:27:38 +08:00
tools riscv/erbium: Add standalone Minion emulator support. 2026-09-24 15:38:14 +08:00
video
wireless wireless/bluetooth: Reject GATT operations on unconnected peers. 2026-09-24 09:51:44 +02:00
.asf.yaml
.codespell-ignore-lines
.codespellrc zbus: Add linker support and documentation for the zbus port 2026-09-21 08:40:14 -03:00
.editorconfig
.gitignore
.gitmessage
.pre-commit-config.yaml
.yamllint
AUTHORS
CMakeLists.txt cmake: reconfigure when .config changes 2026-09-14 18:40:45 -03:00
CONTRIBUTING.md
INVIOLABLES.md
Kconfig
LICENSE
Makefile
NOTICE
README.md
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.