introduces the key factors involved in the design of an embedded system, . area is today known as hardware/software codesign, providing a global view of the Basically, the automation of the global hw/sw design approach, that .. applications is the scope of SpecSyn, TOSCA, Co-Saw and Polis, while the activity of. Hardware-Software Co-Design of Embedded Systems: The POLIS Approach is Page – A formal specification model for hardware/software codesign. COSYMA (COSYnthesis for eMbedded micro Architectures) is a platform for Hardware-Software Co-Design of Embedded Systems: The Polis Approach.

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Ptolemy in the acronym is the design tool developed at the Univ.

Schedule validation for embedded reactive real-time systems. Each element of a network of CFSMs describes a component of the system to be modeled. It is not for circuit synthesis.

A Framework for Hardware-Software Co-Design of Embedded Systems

The partition tool exploits the implicit parallelism of the specified system. Ben Ismail, and A.

They also put more effort on software synthesis and estimation than the other tools. Due to the problems they want to solve, this project is more concentrated on the formal specification, formal verification and co-simulation.

Hardware/Software Codesign Group

The synchronous approach to reactive and real-time systems. Jerraya, Automatic generation of interfaces for distributed c-vhdl cosimulation of embedded systems: In addition, the graphical user interface is used to define target architectures and design constraints. Embedded systems are informally defined as a collection of programmable parts surrounded by ASICs and other standard components, that interact continuously with an environment through sensors and actuators.

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The problems with these design methods are: Hardware-software partition is decided a priori and is adhered to as much as is possible, because any changes in this partition may necessitate extensive redesign. Partitioning, Software generation, Hardware generation.

When the user or tool have selected a hardware and software partition, it is written to the database.

The specification parts dedicated to hardware are then oof into a VHDL description. Generated hardware and software can be co-simulated before and after synthesis, behavioural and RT-level co-simulation.

Unlike most of the other tools cosyma, cosmos, etc. For each chosen architecture SynDEx proposes the best implementation of the algorithm application onto this architecture. This model is maintained throughout the design process, in order to preserve the formal properties of the design. While both perform the same computation for each CFSM transition, hardware and software exhibit different delay characteristics.

Page – G. The difference between the two models is that the synchronous communication model of classical concurrent FSMs is replaced in the CFSM model by a finite, non-zero, codeign reaction time. This permits the use of a broad range of target FPGA-architectures.


Current methods for designing embedded systems require to specify and design hardware and software separately. The two executables are executed, and the captured profiling data is written to a data base as shown in figure 1.

This model of computation can also be described as Globally Asynchronous, Locally Synchronous.

The hardware and software components are derived from a single SDL-specification. The design flow that is currently implemented in the POLIS system is depicted in the following figure and is described more in detail below.

It is designed for control dominated, reactive systems under timing constraints, with a new emphasis on distributed architectures. Therefore, we are developing a methodology for specification, automatic synthesis, and validation of this sub-class of embedded systems that includes the examples described above. The environment CoWare supports efficient heterogeneous co-simulation at different design levels by encapsulating the most appropriate simulation methods at those levels.

These systems are stored in a system library. Account Options Sign in. There are many different academic approacn to try to solve the problem of embedded system design.