Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
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wangjianyu3 929acd26e0 xtensa/esp32s3: fix esp32s3_cam uninit/stop_capture bugs
Fix several issues in the ESP32-S3 CAM driver:

- stop_capture: reset DMA channel, CAM module and AFIFO under
  spinlock to fully quiesce hardware before returning. Clear
  pending VSYNC interrupt to prevent stale ISR firing.

- uninit: reset CAM/AFIFO before releasing DMA to prevent
  in-flight transfers after channel detach. Use esp_teardown_irq
  with correct peripheral ID (ESP32S3_PERIPH_LCD_CAM) instead of
  irq_detach which corrupts the shared IRQ mapping table. Mask
  interrupts and clear pending flags under spinlock before
  detaching handler.

- uninit: preserve XCLK output so the sensor remains accessible
  via I2C for subsequent re-initialization.

- set_buf/uninit: track driver-allocated vs user-provided frame
  buffers with fb_allocated flag to prevent double-free when
  using V4L2 USERPTR mode.

Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
2026-04-10 10:47:07 +02:00
.github .github/build.yml: improve ntfc installation 2026-04-10 09:17:03 +08:00
arch xtensa/esp32s3: fix esp32s3_cam uninit/stop_capture bugs 2026-04-10 10:47:07 +02:00
audio include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
binfmt include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
boards boards/xtensa/esp32: Fix nvblk defconfig 2026-04-09 20:14:44 +08:00
cmake cmake: add olddefconfig target for CMake builds 2026-04-02 13:16:54 +08:00
crypto include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
Documentation Documentation/platforms/arm/tiva: add lm3s6965-ek board documentation 2026-04-07 14:51:10 +02:00
drivers video/gc0308: implement V4L2 horizontal flip control 2026-04-10 10:47:07 +02:00
dummy build: add initial cmake build system 2023-07-08 13:50:48 +08:00
fs fs: rpmsgfs_client: add init message to unlock semaphore 2026-04-09 14:07:06 +08:00
graphics include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
include style: fix checkpatch issues after debug.h move 2026-04-07 07:50:06 -03:00
libs include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
mm include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
net net/udp: fix conn_unlock not called outside conditional block 2026-04-09 03:04:15 +08:00
openamp openamp: Fix Make style 2026-03-23 18:16:46 -04:00
pass1 Makefile: Remove make depend files by make distclean 2026-02-16 16:27:57 +01:00
sched include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
syscall Makefile: Remove make depend files by make distclean 2026-02-16 16:27:57 +01:00
tools tools/ci: upgrade esptool on CI Dockerfile 2026-04-09 22:56:42 +08:00
video include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
wireless include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
.asf.yaml github: master branch protection tune. 2025-05-07 18:37:13 -05:00
.codespell-ignore-lines net/icmpv6: replace net_lock with conn_lock and conn_lock_dev 2025-12-29 09:42:18 +08:00
.codespellrc codespellrc: add ist to ignorelist 2025-10-14 17:42:01 +08:00
.editorconfig .editorconfig: fix character encoding property specification 2025-11-28 19:12:13 +08:00
.gitignore gitignore: add more vim swap files 2025-06-18 15:44:51 -04:00
.gitmessage docs/contributing: Add a commit message template 2025-06-03 17:33:24 +08:00
.pre-commit-config.yaml pre-commit: enable codespell checks 2025-05-05 12:34:39 +08:00
.yamllint feat: add a GitHub action to lint the YAML files 2020-12-15 09:52:04 -06:00
AUTHORS AUTHORS: add Donny Jiuzhu 2026-02-25 10:17:40 +01:00
CMakeLists.txt cmake: Enhance .config handling and comparison logic 2026-02-26 09:46:02 -03:00
CONTRIBUTING.md docs: Fix typos, formatting, and numbering in README.md and CONTRIBUTING.md. 2026-03-23 12:05:24 +01:00
INVIOLABLES.md
Kconfig tools/stackusage.py: use toolchain binaries instead of Python libraries 2026-03-17 11:26:44 -03:00
LICENSE style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
Makefile tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
NOTICE Remove the double blank line from source files 2022-02-20 20:10:14 +01:00
README.md docs: Fix typos, formatting, and numbering in README.md and CONTRIBUTING.md. 2026-03-23 12:05:24 +01:00
ReleaseNotes Documentation: move ReleaseNotes 2023-09-26 20:41:00 +08:00

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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.