NuttX explained

NuttX
Logo Size:	64px
Logo Caption:	NuttX logo
Developer:	Apache Software Foundation
Source Model:	Open source
Supported Platforms:	ARM, AVR, AVR32, HCS12, LM32, MIPS, RISC-V, OpenRISC, SuperH, Xtensa, x86, x86-64, Z80
Family:	POSIX
Latest Release Version:	12.7.0
Latest Release Date:	^[1]
Marketing Target:	Embedded systems
Programmed In:	C, C++, assembly
Working State:	Current
Kernel Type:	Real-time microkernel
License:	Apache License 2.0

NuttX is a free and open-source real-time operating system (RTOS) with an emphasis on technical standards compliance and on having a small footprint. It is scalable from 8-bit to 64-bit microcontroller environments.^[2] The main governing standards in NuttX are from the Portable Operating System Interface (POSIX) and the American National Standards Institute (ANSI). Further standard application programming interfaces (APIs) from Unix and other common RTOSes (such as VxWorks) are adopted for functions unavailable under these standards, or inappropriate for deeply embedded environments, such as the fork system call.

NuttX was initially released in 2007 under the permissive BSD license.^[3] In December 2019, it began incubation at the Apache Software Foundation.^[4] Changing its license from BSD to Apache License and graduated to a top-level project in November 2022.^[5]

Projects using NuttX

• PX4 autopilot drones.^[6]
• Pixhawk an advanced, User-Friendly Autopilot.
• OsmocomBB uses NuttX to develop an operating system for cell phones.
• Haltian's Thingsee IoT gateway devices use the ThingseeOS operating system, which is based on NuttX.
• Motorola Moto Z.
• Sony is using NuttX in their audio processors.
• Sony is using NuttX in the Spresense development board.^[7]
• Samsung TizenRT based on NuttX RTOS.^[8]
• Xiaomi Vela, an IoT software platform based on NuttX.^{[9] [10]}

Notes and References

1. Web site: Apache NuttX-12.7.0. October 30, 2024.
2. Web site: About Apache NuttX . nuttx.apache.org . June 23, 2023.
3. Web site: NuttX Project at SourceForge. October 18, 2023.
4. Web site: Apache NuttX (Incubating) . incubator.apache.org . April 29, 2021.
5. Web site: The Apache Software Foundation Announces Apache® NuttX™ as a Top-Level Project . news.apache.org . June 23, 2023.
6. Web site: Autopilot PX4. May 3, 2013.
7. Web site: Spresense combines multi-core and power efficiency. September 5, 2019.
8. https://github.com/Samsung/TizenRT TizenRT repo
9. Web site: Xiaomi Unveils Xiaomi HyperOS, a Human-centric Operating System Designed and Tailored to Connect Personal Devices, Cars, and Smart Home Products in a Smart Ecosystem . December 12, 2023.
10. Web site: Xiaomi Vela IoT Platform is Being Open-Sourced Based on NuttX Real-time OS . December 12, 2023.