Real-time spacewire services in networked embedded systems

SpaceWire is a modern communication network, proposed for spacecraft and aircraft applications. SpaceWire supports packet transmission, time codes broadcasting and interrupts distributing. The aim of the work, presented in the paper, is to make these capabilities accessible for a wide range of networked Linux applications, running at Linux-based SpaceWire nodes. For this purpose several services were developed as Linux kernel modules with a standard user interface. Thus a lot of networking applications can start using SpaceWire without any change or with the very small changes. The paper shows the architecture of the Linux OS with SpaceWire services and the services themselves.