Apache NuttX is a mature, real-time embedded operating system (RTOS)
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Yanfeng Liu 3b9a346fe7 riscv/nsbi: unblock up_udelay
This fixes the always zero time in NuttSBI case as the `error` field
contains the correct timestamp. This in turn also fixes the block of
`up_udelay()` which further leads to boot failure of `canmv230:master`
config.

Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
2024-07-22 23:46:43 +08:00
.github tools/testbuild.sh: add option -N use CMake with Ninja 2024-07-18 13:40:20 +08:00
Documentation board/stm32f401rc-rs485: Add support to MAX7219 8x8 LED Matrix 2024-07-22 09:25:12 +08:00
arch riscv/nsbi: unblock up_udelay 2024-07-22 23:46:43 +08:00
audio Documentation: remove all migrated READMEs 2023-10-29 21:03:54 -03:00
binfmt Revert "sched: replace some global variables to macro" 2024-06-06 22:00:25 +08:00
boards board/stm32f401rc-rs485: Add support to MAX7219 8x8 LED Matrix 2024-07-22 09:25:12 +08:00
cmake cmake/boards: fix build break on custom board 2024-07-17 15:09:07 +08:00
crypto fix(Kconfig): spellcheck "randon" to "random" 2024-06-15 17:40:18 +08:00
drivers usbdev: delete unsigned comparison with 0 2024-07-22 23:44:18 +08:00
dummy
fs fs/mnemofs: Add master node and r/w methods 2024-07-16 09:06:51 +08:00
graphics video/vnc: add vnc_fb_register 2024-04-12 17:42:49 +08:00
include fix compile error 2024-07-19 09:54:21 +02:00
libs tricore/cmake: add support of cmake build for tricore 2024-07-18 13:40:49 +08:00
mm mm_ubsan: add dummy to bypass runtime actions 2024-07-10 20:09:39 +08:00
net net/pkt: correct PF_PACKET family sending errors 2024-07-14 13:20:14 -03:00
openamp libmetal/atomic: enable 64-bit atomic by toolchain builtin flags 2024-06-29 22:38:48 +08:00
pass1
sched sched: Improve Kconfig help of INIT_ENTRYPOINT 2024-07-21 19:53:27 -03:00
syscall sem_open: return error code, sem returned by parameter 2024-06-06 02:40:50 +08:00
tools tools/testbuild.sh: add option -N use CMake with Ninja 2024-07-18 13:40:20 +08:00
video
wireless Remove the back slash from long literal string 2024-02-19 16:43:15 +01:00
.asf.yaml
.gitignore riscv/k230: revise canmv230:pnsh 2024-07-13 07:21:22 -03:00
.yamllint
AUTHORS
CMakeLists.txt cmake/linker: replace --script= with -T to enhance compatibility 2024-07-18 13:40:49 +08:00
CONTRIBUTING.md
INVIOLABLES.md
Kconfig Fix Kconfig style 2024-07-12 06:37:59 +08:00
LICENSE libc/x86_64: port string functions from bionic 2024-07-02 23:59:18 +08:00
Makefile
NOTICE
README.md Gathering community recommendations 2023-10-28 13:55:56 +08:00
ReleaseNotes Documentation: move ReleaseNotes 2023-09-26 20:41:00 +08:00

README.md

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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.