Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
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Jorge Guzman 2e7910fef6 boards/stm32h7/linum-stm32h753bi: enable USB FS host, add lvglterm_kbda
Enable the OTG FS host on the Linum board so an external USB HID keyboard
can be used: configure the USB VBUS, power-switch and over-current GPIOs
at board bring-up (the power switch on PI12 is active low) and start the
USB host from stm32_bringup() through stm32_usbhost_initialize().

Add the lvglterm_kbda configuration - the LVGL terminal driven by a USB
HID keyboard on /dev/kbda - with the microSD card enabled alongside the
USB host.  They coexist once CONFIG_MMCSD_MMCSUPPORT is left disabled, so
an SD card is not probed as an MMC device.

Also switch esp32s3-m5-cardputer:lvglterm to the renamed matrix-keyboard
input option (EXAMPLES_LVGLTERM_INPUT_KBD_MATRIX) to match the reworked
lvglterm example Kconfig.

Update the documentation accordingly: the LVGL Terminal example page for
the three-way input choice (touch, matrix, USB HID) with cursor-key
scrolling and per-variant configuration plus a photo of the USB variant
running on the Linum, the lvglterm_kbda entry on the Linum board page,
and the matrix-keyboard variant name on the M5Stack Cardputer board page.

Signed-off-by: Jorge Guzman <jorge.gzm@gmail.com>
2026-07-08 14:08:16 -04:00
.github .github: SECURITY.md update. 2026-07-08 09:52:09 +08:00
arch arch/riscv: reject overlapping leaf PTE in riscv_fillpage 2026-07-08 10:19:04 -03:00
audio include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
binfmt fs/binfmt: Enforce POSIX execute permissions prior to binary load 2026-06-13 21:07:01 +08:00
boards boards/stm32h7/linum-stm32h753bi: enable USB FS host, add lvglterm_kbda 2026-07-08 14:08:16 -04:00
cmake boards/arm/qemu: Fix KASAN global sections placement in linker script 2026-07-03 07:51:11 +02:00
crypto crypto: Support SHA2_224_HMAC 2026-07-04 14:15:17 +08:00
Documentation boards/stm32h7/linum-stm32h753bi: enable USB FS host, add lvglterm_kbda 2026-07-08 14:08:16 -04:00
drivers drivers: 1wire: Fix DS2XXX device type bounds 2026-07-06 08:19:49 +02:00
dummy
fs fs/partition: bound TXTABLE partition names 2026-07-06 07:51:46 +02:00
graphics !include/fcntl.h: align open flags with Linux values 2026-06-30 13:43:44 +08:00
include drivers/audio/i2s: Fix unsigned integers in function signatures 2026-07-05 15:06:04 +08:00
libs libc/stream: Check lowout bounds before access 2026-07-06 09:02:22 +02:00
mm mm/umm_heap: disable KASAN for user-space heap in kernel build 2026-07-03 07:51:11 +02:00
net !include/fcntl.h: align open flags with Linux values 2026-06-30 13:43:44 +08:00
openamp openamp: fix CMake dcache option 2026-05-10 15:03:24 +02:00
pass1 Makefile: Remove make depend files by make distclean 2026-02-16 16:27:57 +01:00
sched !include/fcntl.h: align open flags with Linux values 2026-06-30 13:43:44 +08:00
syscall syscall: fcntl param3 type to uintptr_t 2026-04-27 12:01:55 -03:00
tools build(deps): bump pillow from 11.0.0 to 12.2.0 in /tools/pynuttx 2026-07-07 14:50:49 +08:00
video video: ensure video library is non-empty 2026-05-08 19:51:39 +08:00
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 !boards: Remove NSH_ARCHINIT and board_app_initialize 2026-05-02 18:36:46 +08:00
.codespellrc arch/sim: replace macOS C++ constructor runtime hack with post-link patch 2026-05-19 07:08:55 -03:00
.editorconfig .editorconfig: fix character encoding property specification 2025-11-28 19:12:13 +08:00
.gitignore git: Specify multiple build directories in .gitignore. 2026-05-20 03:06:58 +08:00
.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
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 docs: Fix typos, formatting, and numbering in README.md and CONTRIBUTING.md. 2026-03-23 12:05:24 +01:00
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 !arch/stm32: move stm32l1 and finalize the directory split 2026-06-24 14:54:44 -03:00
Makefile tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
NOTICE
README.md ci/testing: Add MemBrowse Integration 2026-06-18 12:07:41 -03:00
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.