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The paper addresses the design-space exploration of network alternatives for complex distributed systems of embedded devices, e.g., for smart power grid or telecommunication services. While past research mainly provided efficient programming abstractions and HW/SW simulation tools, this work introduces the network perspective in the verification of different design solutions (e.g., different task...
The structure and the functionalities of a device driver are strongly influenced by the target platform architecture, as well as by the device communication protocol. This makes the generation of device drivers designed for complex embedded platforms a very time consuming and error prone activity. Validation becomes then a nodal point in the design flow. The aim of this paper is to present a co-simulation...
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...
The extreme heterogeneity of networked embedded platforms makes both design and reuse of applications really hard. These facts decrease portability. A middleware is the software layer that allows to abstract the actual characteristics of each embedded platform. Using a middleware decreases the difficulty in designing applications, but programming for different middle wares is still a barrier to portability...
This paper presents an accurate and scalable implementation of an energy-aware simulator for wireless sensor networks (WSN's). Scalability and accuracy have been achieved through an energy-aware instrumentation of the Instruction Set Simulator of node's microcontroller and a functional SystemC TLM model of the radio module implementing the IEEE 802.15.4 protocol. The framework allows to execute actual...
This work focuses on the HW/SW co-simulation of complex systems consisting of several independent CPUpsilas (multi-CPU systems) such as multi-processor system-on-chip (MPSoC) and wireless sensor networks. The verification of such systems requires the efficient evaluation of hardware-software interactions in several processing units. We present a HW/SW co-simulation framework consisting of a timing-accurate...
In this paper the Angel Gateway is described in terms of architecture and provided functionalities, along with the design of the middleware as the core module implementing the main features of the gateway itself. The gateway, being it a fixed or a mobile one, is a key element in the Angel platform that stands between the WSN and the public network infrastructure. The role of the gateway is to enable...
The development of complex applications based on a large and heterogeneous set of networked embedded systems (NES) requires the availability of tools and methodologies for their simulation. In the past, a considerable research effort has been done to create specific tools for each design domain - software, hardware and network- but many issues have still to be addressed for their combined use in complex...
In the development of application software for networked embedded systems a significant step to improve interoperability and reuse consisted in relying on a service layer providing an abstract interface through a well-defined programming paradigm (e.g., object-oriented, tuplespace or database). During application development this layer can provide a simulation model of the actual platform while during...
The paper focuses on the design of networked embedded systems which cooperate to provide complex distributed applications. A milestone in the effort of simplifying the implementation of such applications has been the introduction of a service layer, named middleware, which abstracts from the peculiarities of the operating system and HW components. However, the presence of the middleware has not been...
This paper addresses the embedded design issues of the EPCglobal Architecture aiming at providing RFID-based solutions. Some problems related to its porting on the embedded systems field have been analyzed. These problems concern the role of the operating system adopted by the embedded system, the SW architecture implementation (Single-Thread or Multi-Thread) to satisfy the EPCglobal Architecture...
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