Jonathan Hui
202d5df96d
This commit implements CSL transmitter and receiver functionality in the Nexus simulation platform. It enables the necessary OpenThread configurations and provides the platform-level support for CSL. It also implements the otPlatRadioGetNow platform API to provide a high-resolution 64-bit microsecond time base, which is required for accurate CSL timing and synchronization. Changes: - Added GetNowMicro64() to Nexus::Core to expose the raw 64-bit microsecond timer. - Implemented otPlatRadioGetNow() in nexus_radio.cpp. - Enabled OPENTHREAD_CONFIG_MAC_CSL_RECEIVER_ENABLE and OPENTHREAD_CONFIG_MAC_CSL_TRANSMITTER_ENABLE in Nexus config. - Added otRadioContext to Nexus::Radio to track CSL parameters and manage security material for radio operations. - Implemented otPlatRadioEnableCsl, otPlatRadioResetCsl, otPlatRadioUpdateCslSampleTime, and otPlatRadioGetCslAccuracy. - Implemented otPlatRadioSetMacKey, otPlatRadioSetMacFrameCounter, and otPlatRadioSetAlternateShortAddress to keep radio context synchronized with OpenThread stack. - Updated otPlatRadioSetExtendedAddress and otPlatRadioEnableCsl to use AsCoreType for better readability and project conventions. - Moved Radio member initializations to the initializer list in its constructor. - Refactored radio SFD processing: moved otMacFrameProcessTxSfd and UpdateFcs from otPlatRadioTransmit (radio platform) to Core::ProcessRadio (simulation engine), ensuring CSL IEs and security headers are updated exactly when transmission starts. - Enhanced Nexus::Core::ProcessRadio to support generating Enhanced ACKs with CSL IEs for 802.15.4-2015 frames. - Updated Nexus and fuzz build systems to include necessary Nexus platform and utils headers/utilities.
What is OpenThread?
OpenThread released by Google is... 
...an open-source implementation of the Thread networking protocol. Google Nest has released OpenThread to make the technology used in Nest products more broadly available to developers to accelerate the development of products for the connected home.
...OS and platform agnostic, with a narrow platform abstraction layer and a small memory footprint, making it highly portable. It supports both system-on-chip (SoC) and network co-processor (NCP) designs.
...a Thread Certified Component, implementing all features defined in the Thread 1.4.0 specification, including all Thread networking layers (IPv6, 6LoWPAN, IEEE 802.15.4 with MAC security, Mesh Link Establishment, Mesh Routing) and device roles, as well as Border Router support.
More information about Thread can be found at threadgroup.org. Thread is a registered trademark of the Thread Group, Inc.
Who supports OpenThread?
Getting started
All end-user documentation and guides are located at openthread.io. If you're looking to do things like...
- Learn more about OpenThread features and enhancements
- Use OpenThread in your products
- Learn how to build and configure a Thread network
- Port OpenThread to a new platform
- Build an application on top of OpenThread
- Certify a product using OpenThread
...then openthread.io is the place for you.
Note: For users in China, end-user documentation is available at openthread.google.cn.
If you're interested in contributing to OpenThread, read on.
Contributing
We would love for you to contribute to OpenThread and help make it even better than it is today! See our Contributing Guidelines for more information.
Contributors are required to abide by our Code of Conduct and Coding Conventions and Style Guide.
License
OpenThread is released under the BSD 3-Clause license. See the LICENSE file for more information.
Please only use the OpenThread name and marks when accurately referencing this software distribution. Do not use the marks in a way that suggests you are endorsed by or otherwise affiliated with Nest, Google, or The Thread Group.
Need help?
OpenThread support is available on GitHub:
- Bugs and feature requests — submit to the Issue Tracker
- Community Discussion - ask questions, share ideas, and engage with other community members