A Component-based Approach to Embedded Software Design

Heterogeneous models have been alternative solution to problems involving more than one application domain. Over the last decade, models of computation have been investigated, offering new possibilities of use in several aplications. This paper presents the Extended Dataflow model, an extension of the original dataflow model, with support to event handling. In Extended Dataflow a model specification using XML has been developed and it is presented along with its model syntax. We discuss its operational semantics which aims at avoiding ambiguities and inconsistency. In addition, the reuse of third party components within the model is illustrated through the case study of a digital filtering system.