OrgApache/incubator-nuttx
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incubator-nuttx
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Apache NuttX is a mature, real-time embedded operating system (RTOS)
53,018 Commits 18 Branches 185 Tags 369 MiB
C 97.1%
Assembly 1.2%
CMake 0.6%
Makefile 0.5%
Python 0.3%
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hujun5 9a36b8b823 csection: We can save execution time by removing judgments. 
test:
We can use qemu for testing.

compiling
make distclean -j20; ./tools/configure.sh -l qemu-armv8a:nsh_smp ;make -j20
running
qemu-system-aarch64 -cpu cortex-a53 -smp 4 -nographic -machine virt,virtualization=on,gic-version=3 -net none -chardev stdio,id=con,mux=on -serial chardev:con -mon chardev=con,mode=readline -kernel ./nuttx

or
compiling
make distclean -j20; ./tools/configure.sh -l sabre-6quad:smp ;make -j20
running
qemu-system-arm  -semihosting -M sabrelite -m 1024 -smp 4 -kernel nuttx/nuttx -nographic

Signed-off-by: hujun5 <hujun5@xiaomi.com>
 		2024-05-09 13:45:02 +08:00
.github build(deps): bump github/super-linter from 5 to 6 2024-04-29 17:34:32 +08:00
Documentation esp32-devkitc/wamr_wasi_debug: fix image size in an example 2024-05-08 23:45:05 +08:00
arch arm/imx6: we use spin_lock_irqsave replace enter_critical_section to protect gpio init 2024-05-09 13:45:02 +08:00
audio Documentation: remove all migrated READMEs 2023-10-29 21:03:54 -03:00
binfmt all: Fix accessing uninitialized local variables 2024-04-04 11:51:54 +08:00
boards drivers/devicetree: Add a set of commonly used FDT utilities. 2024-05-09 01:37:11 +08:00
cmake cmake:bugfix __KERNEL__ should not be defined in libc,mm.. in FLAT mode 2024-05-02 16:03:09 +08:00
crypto sched: explicitly select the cpuload clock source configuration 2023-11-01 09:27:56 +08:00
drivers up_putc: int up_putc, enter_critical_section may be called 2024-05-09 13:45:02 +08:00
dummy build: add initial cmake build system 2023-07-08 13:50:48 +08:00
fs procfs/meminfo: fit line width in 80 chars 2024-04-24 16:33:32 +08:00
graphics video/vnc: add vnc_fb_register 2024-04-12 17:42:49 +08:00
include sched/sched: CONFIG_SCHED_RESUMESCHEDULER macro define error 2024-05-09 01:39:47 +08:00
libs libc/lib_bzero:Add bzero prototype. 2024-05-07 14:59:05 +02:00
mm mm/map: revise device mapping functions 2024-05-03 23:58:39 +08:00
net tcp: decouple TCP_NODELAY and NET_TCP_KEEPALIVE 2024-04-29 17:45:14 +08:00
openamp openamp/libmetal.cmake: sync with libmetal.defs 2024-03-28 16:07:49 +08:00
pass1 passl: Author Gregory Nutt: update licenses to Apache 2021-02-09 01:21:53 -08:00
sched csection: We can save execution time by removing judgments. 2024-05-09 13:45:02 +08:00
syscall build/cmake: add initial KERNEL mode support 2024-03-15 16:21:23 +08:00
tools Add basic support for locales in order to C++ streams to build and work for simple cases (POSIX / C locale). 2024-04-29 17:34:10 +08:00
video build: add initial cmake build system 2023-07-08 13:50:48 +08:00
wireless Remove the back slash from long literal string 2024-02-19 16:43:15 +01:00
.asf.yaml feat: add a GitHub action to lint the YAML files 2020-12-15 09:52:04 -06:00
.gitignore fs/vfat: Fix typo in the macro DIRSEC_BYTENDX 2024-02-03 12:46:08 -03:00
.yamllint feat: add a GitHub action to lint the YAML files 2020-12-15 09:52:04 -06:00
AUTHORS AUTHORS: add Tomek CEDRO to the list 2023-03-07 14:15:55 +01:00
CMakeLists.txt cmake:enhance set_source_files_properties for NuttX CMake module 2024-04-18 14:57:58 -03:00
CONTRIBUTING.md Remove the tail spaces from all files except Documentation 2023-02-26 13:24:24 -08:00
INVIOLABLES.md INVIOLABLES.md: Fix a simple alignment and change occurrences of Nuttx 2020-09-03 01:33:05 +08:00
Kconfig rpmsg/debug: add debug configs and macros 2024-02-15 19:53:55 -08:00
LICENSE RP2040: Implement board_uniqueid() 2024-03-17 10:00:25 -03:00
Makefile tools:fix some error use of shell command in Windows native build 2022-11-06 16:41:49 +08:00
NOTICE Remove the double blank line from source files 2022-02-20 20:10:14 +01:00
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.