The literature does not report a complete design methodology for WSN applications integrating all these aspects. The proposed methodology allows programmers to write WSN applications by using the system description language SystemC and the Abstract Middleware Environment (AME) framework for fast simulation. 1). AME behaves as an abstraction of the services provided by the actual platform, e.g., ZigBee profiles. The SystemC framework allows to model and simulate concurrent processing, synchronization, and communication. Finally, the implemented application is automatically mapped over an actual platform.