8896242b9d
Reduce the downloads of esp-hal-3rdparty when using nxtmpdir to store esp-hal-3rdparty and speedup compilation after `make distclean`. Usage: ``` ~/nuttxspace/nuttx/make distclean ~/nuttxspace/nuttx/./tools/configure.sh -l -S esp32-devkitc:nsh ~/nuttxspace/nuttx/make flash -j 8 ESPTOOL_PORT=/dev/ttyUSB0 ~/nuttxspace/nuttx/picocom /dev/ttyUSB0 --baud 115200 ``` Result: ``` load:0x40080000,len:30516 entry 0x40082880 *** Booting NuttX *** dram: lma 0x00001020 vma 0x3ffb2020 len 0xe30 (3632) iram: lma 0x00001e58 vma 0x40080000 len 0x7734 (30516) padd: lma 0x00009598 vma 0x00000000 len 0x6a60 (27232) imap: lma 0x00010000 vma 0x400e0000 len 0x11e50 (73296) padd: lma 0x00021e58 vma 0x00000000 len 0xe1a0 (57760) dmap: lma 0x00030000 vma 0x3f410000 len 0x2d3c (11580) total segments stored 6 WARNING: NuttX supports ESP32 chip revision >= v3.0 (chip is v1.0). Ignoring this error and continuing because `ESP32_IGNORE_CHIP_REVISION_CHECK` is set... THIS MAY NOT WORK! DON'T USE THIS CHIP IN PRODUCTION! NuttShell (NSH) NuttX-12.8.0 nsh> uname -a NuttX 12.8.0 edf89ddedd-dirty Dec 22 2025 09:21:37 xtensa esp32-devkitc nsh> Terminating... ``` Any new `make distclean` and configure for a different espressif device no longer requires the downloading of modules or patching. Signed-off-by: Laczen JMS <laczenjms@gmail.com>
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.