Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
Find a file
Ricard Rosson 65970a3339 boards/rp23xx: add missing rp23xx_st7735.c LCD board glue
The rp23xx common board sources reference rp23xx_st7735.c from both
Make.defs and CMakeLists.txt under CONFIG_LCD_ST7735, but the file was
never added.  Enabling CONFIG_LCD_ST7735 on any rp23xx board therefore
fails the build on the missing source.

Add the file, modelled on the existing RP2040 sibling
boards/arm/rp2040/common/src/rp2040_st7735.c and retargeted to
rp23xx/SPI1.  It implements board_lcd_initialize(), board_lcd_getdev()
and board_lcd_uninitialize(): bring up SPI1, claim the D/C (shared with
the unused SPI1 RX pad, per the rp23xx common convention), RST and BL
pads as GPIO, pulse the panel reset and bind the ST7735 driver.

Validated on silicon on a Waveshare RP2350-LCD-0.96 (RP2350A + ST7735S
160x80 IPS): the panel powers up and displays correctly, painted at boot
with no console interaction.  Build-tested raspberrypi-pico-2:nsh with
CONFIG_LCD_ST7735=y (compiles and links).

Assisted-by: Claude (Anthropic Claude Code)
Signed-off-by: Ricard Rosson <ricard@groundbits.com>
2026-07-28 10:16:12 +08:00
.github build(deps): bump actions/setup-python from 6 to 7 2026-07-27 13:34:36 -04:00
arch arch/x86_64: do not wrap the HPET oneshot on a deadline that has passed. 2026-07-27 18:24:47 -03:00
audio drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-07-13 12:08:01 +02:00
binfmt elf:use elf symbol to parse attribute 2026-07-15 12:24:44 -03:00
boards boards/rp23xx: add missing rp23xx_st7735.c LCD board glue 2026-07-28 10:16:12 +08:00
cmake cmake: Omit default priority ELF symbol. 2026-07-27 14:30:42 +08:00
crypto crypto: add CRYPTO_AES_CTR_SSH variant (128-bit big-endian counter) 2026-07-16 15:42:10 +08:00
Documentation docs/boards/raspberrypi-4b: Document updated NXDoom config 2026-07-28 02:46:42 +08:00
drivers drivers/sensors: add LIS3DSH accelerometer uORB driver 2026-07-25 14:45:40 +02:00
dummy build: add initial cmake build system 2023-07-08 13:50:48 +08:00
fs fs/vfs: Add ioctldir for volume ioctls via the mountpoint directory. 2026-07-25 07:28:22 -03:00
graphics drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
include stm32h7/dac: add DMA stream mode with ioctl-driven double-buffering 2026-07-26 14:26:47 -03:00
libs libc/time: Fix POSIX timezone string parsing. 2026-07-25 19:54:18 +08:00
mm arch/mips: Add basic support for MIPS Creator CI20 board 2026-07-15 08:02:55 -03:00
net arch/sim: Add AF_LOCAL support to host usrsock 2026-07-23 15:34:02 +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 sched/addrenv: do not dereference a NULL address environment 2026-07-28 10:14:44 +08:00
syscall syscall: fcntl param3 type to uintptr_t 2026-04-27 12:01:55 -03:00
tools tools/nxstyle: add a script to check a whole tree at once 2026-07-28 02:43:24 +08:00
video video: fix EDID standard timing decode 2026-07-17 15:00:50 -03:00
wireless drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-07-15 15:27:28 +08:00
.asf.yaml github: master branch protection tune. 2025-05-07 18:37:13 -05:00
.codespell-ignore-lines arch/arm: Reserve r10 via ARCHCFLAGS and hoist the PIC module flags. 2026-07-24 23:09:08 +08:00
.codespellrc arch/arm/rp23xx: Add hardware TRNG driver for /dev/random. 2026-07-25 15:06:56 +08:00
.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: Do not link an executable to detect the compiler. 2026-07-25 22:52:39 +08:00
CONTRIBUTING.md contributing: Add requirement for 'Assisted-by' commit field 2026-07-12 09:42:28 +08:00
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 libs/libdsp: Add Matrix operations 2026-07-11 14:55:59 -03:00
Makefile !boards: enforce secure ROMFS passwd and TEA key setup 2026-07-09 22:41:11 +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

POSIX Badge License Issues Tracking Badge Contributors GitHub Build Badge Documentation Badge MemBrowse

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.