User Guide ========== Welcome to the Nexus Platform User Guide. This comprehensive guide covers everything you need to know to effectively use the Nexus embedded platform in your projects. .. contents:: Table of Contents :local: :depth: 2 Overview -------- The Nexus User Guide is organized into several sections, each covering a specific aspect of the platform: **Core Architecture** Understanding the fundamental design and structure of Nexus **Hardware Abstraction Layer (HAL)** Working with hardware peripherals through unified APIs **OS Abstraction Layer (OSAL)** Managing tasks, synchronization, and RTOS integration **Framework Components** Using high-level services like logging, shell, and configuration **Configuration System** Mastering Kconfig for compile-time configuration **Build System** Understanding CMake build configuration and customization **Platform Integration** IDE setup, debugging, and platform-specific features **Advanced Topics** Power management, security, performance optimization Who Should Read This Guide --------------------------- This guide is designed for: * **Embedded Software Engineers** - Building applications on Nexus * **System Architects** - Designing embedded systems with Nexus * **Firmware Developers** - Implementing device drivers and middleware * **Application Developers** - Creating user-facing embedded applications * **Technical Leads** - Evaluating Nexus for projects Prerequisites ------------- Before using this guide, you should have: * Basic understanding of C programming * Familiarity with embedded systems concepts * Knowledge of your target hardware platform * Development environment set up (see :doc:`../getting_started/environment_setup`) How to Use This Guide --------------------- **For Beginners** Start with :doc:`architecture` to understand the overall system, then proceed through :doc:`hal`, :doc:`osal`, and the framework components in order. **For Experienced Users** Jump directly to the section you need. Each chapter is self-contained with cross-references to related topics. **For Reference** Use the search function or index to find specific APIs, configuration options, or concepts. Guide Structure --------------- Core Platform ~~~~~~~~~~~~~ .. toctree:: :maxdepth: 2 architecture hal osal log shell config Configuration & Build ~~~~~~~~~~~~~~~~~~~~~ .. toctree:: :maxdepth: 2 kconfig kconfig_tutorial kconfig_peripherals kconfig_platforms kconfig_osal kconfig_tools build_system Development Tools ~~~~~~~~~~~~~~~~~ .. toctree:: :maxdepth: 2 ide_integration debugging testing profiling Advanced Topics ~~~~~~~~~~~~~~~ .. toctree:: :maxdepth: 2 power_management performance memory_management error_handling best_practices Platform Specific ~~~~~~~~~~~~~~~~~ .. toctree:: :maxdepth: 2 porting platform_differences vendor_integration Quick Reference --------------- Common Tasks ~~~~~~~~~~~~ .. * (Coming soon) .. * (Coming soon) .. * (Coming soon) .. * (Coming soon) .. * (Coming soon) .. * (Coming soon) API Quick Links ~~~~~~~~~~~~~~~ * :doc:`../api/hal` - HAL API Reference * :doc:`../api/osal` - OSAL API Reference * :doc:`../api/log` - Log Framework API * :doc:`../api/shell` - Shell Framework API * :doc:`../api/config` - Config Framework API Configuration Quick Links ~~~~~~~~~~~~~~~~~~~~~~~~~~ * :doc:`kconfig_peripherals` - Peripheral Configuration * :doc:`kconfig_platforms` - Platform Configuration * :doc:`kconfig_osal` - OSAL Configuration Getting Help ------------ If you need assistance: 1. **Search this documentation** - Use the search box in the sidebar 2. **Check the FAQ** - See :doc:`../getting_started/faq` 3. **Review examples** - See :doc:`../getting_started/examples_tour` 4. **Consult tutorials** - See :doc:`../tutorials/index` 5. **Ask the community** - Visit our `GitHub Discussions `_ 6. **Report issues** - File bugs on `GitHub Issues `_ Documentation Conventions ------------------------- Throughout this guide, we use the following conventions: **Code Blocks** .. code-block:: c /* C code examples look like this */ int main(void) { return 0; } **Configuration Examples** .. code-block:: kconfig # Kconfig examples look like this CONFIG_HAL_GPIO=y **Shell Commands** .. code-block:: bash # Shell commands look like this cmake -B build **Important Notes** .. note:: Notes provide additional information or tips. **Warnings** .. warning:: Warnings highlight potential issues or important considerations. **Tips** .. tip:: Tips offer helpful suggestions or best practices. **See Also** .. seealso:: Cross-references to related documentation. Next Steps ---------- Ready to dive in? Here are some suggested starting points: **New to Nexus?** Start with :doc:`architecture` to understand the platform design. **Ready to Code?** Jump to :doc:`hal` to learn about hardware peripherals. **Need to Configure?** Check out :doc:`kconfig` for the configuration system. **Building Applications?** See :doc:`../tutorials/first_application` for a step-by-step guide. **Porting to New Hardware?** Read :doc:`porting` for platform adaptation guidance. Related Documentation --------------------- * :doc:`../getting_started/index` - Getting Started Guide * :doc:`../tutorials/index` - Step-by-Step Tutorials * :doc:`../platform_guides/index` - Platform-Specific Guides * :doc:`../api/index` - Complete API Reference * :doc:`../development/index` - Development and Contributing Feedback -------- We continuously improve this documentation based on user feedback. If you find errors, have suggestions, or want to contribute: * Open an issue on `GitHub `_ * Submit a pull request with improvements * Join the discussion on `GitHub Discussions `_ Your feedback helps make Nexus better for everyone!