HyperReal One: the implementation, the environment and an example

HyperReal One (HR1) is an experimental platform for hard real time (HRT) systems which has been developed in the context of the HyperReal project. It is focused on the experimentation of architectural abstractions related to configuration and timing or deeply embedded applications. HR1 introduces actors and connectors as basic components, plus a set of components (virtual clocks, plans, controller and configurator) supporting the configuration of the system and the planning of its activities at a programming in the large level. The control of the system behaviour is concentrated inside the controller, which relies on a time driven model. The paper describes the basic abstractions in term of abstract machines implemented as a hierarchy of C++ classes, and discusses an example highlighting how their use permits one to accommodate different user defined timing and control models in the same system.