.. note:: The present documentation is a recent addition to NuttX and was migrated from previous documentation content. For this reason, it is possible you may find broken links or formatting errors. You can help contribute fixes or improvements to this documentation by following these :doc:`instructions `. .. tip:: You can find the old documentation `here `_. =================== NuttX Documentation =================== NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 32-bit microcontroller environments, the primary governing standards in NuttX are Posix and ANSI standards. Additional standard APIs from Unix and other common RTOS’s (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()). Last Updated: |today| .. toctree:: :caption: Table of Contents :maxdepth: 2 Home introduction/index.rst introduction/inviolables.rst quickstart/index.rst components/index.rst applications/index.rst boards/index.rst reference/index.rst guides/index.rst releases/index.rst contributing/index.rst glossary.rst .. include:: substitutions.rst