, Volume 9, Issue 2, pp 67-99
Date: 14 Jul 2005

Embedded System Design Using Formal Model Refinement: An Approach Based on the Combined Use of UML and the B Language

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The approach proposed in this paper introduces a hardware/software co-design framework for developing complex embedded systems. The method relies on formal proof of system properties at every phase of the co-design cycle. The key concept is the combined use of UML and the B language for system modeling and design, and the seamless transition from UML specifications to system descriptions in B. The final system prototype emerges from correct-by-construction subsystems described in the B language; the hardware components are translated in VHDL/SystemC, while for the software components C/C++ is used. The outcome is a formally proven correct system implementation. The efficiency of the proposed method is exhibited through the design of a case study from the telecommunication domain.