German defense company Rheinmetall has open-sourced its Battlesuite connected weapon system protocol. The onboardapi interface library and middleware is designed for seamless communication between sensor systems and software components. It provides a standardized data model that ensures interoperability across complex hardware and software environments.

Built on the ddkit software development kit, this library utilizes the Data Distribution Service (DDS) standard by the Object Management Group (OMG). This data-centric publish-subscribe architecture guarantees reliable, low-latency data exchange for high-demand applications. By leveraging DDS XTypes and XCDR2 encoding, this library ensures full backward compatibility, allowing different versions of your software to coexist and communicate seamlessly.

While the core library is provided in C++, the API supports multi-language integration via wrappers for Java, C# / .NET, and Python. Getting started, concepts, examples, configuration, interfaces, changelog, and licenses are provided. Interface descriptions: EPL v2.0. Runtime libraries: EULA-RME-SDK-1.0.