Patterns for Embedded Systems Design

embedded system, application pattern, reusability

This paper deals with embedded systems architecture components called as application patterns, and with their employment for design reuse. The first part of this contribution introduces the concepts of application patterns and relates them to the well-known object-oriented design abstractions. Employing application patterns that demonstrate the concrete examples of reusability, the kernel of this contribution presents two case studies, which are based on real design projects: petrol pumping station dispenser controller and multiple lift control system. To reuse an architectural component whose implementation usually consists both of software and hardware, it means to reuse its formal specification. The paper deals with behavioral specifications employing state or timed-state sequences and with their closed-form descriptions by finite-state or timed automata. The contribution focuses on identification, creation, and initial classification of reusable application patterns while retrieval, adaptation, and storage reuse tasks with case-based reasoning support are treated briefly at the conclusion as an introductory information about launching research.