Designing Embedded Systems with the SIGNAL Programming Language

Designing Embedded Systems with the SIGNAL Programming Language : Synchronous, Reactive Specification

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I am very pleased to play even a small part in the publication of this book on the SIGNAL language and its environment POLYCHRONY. I am sure it will be a s- ni?cant milestone in the development of the SIGNAL language, of synchronous computing in general, and of the data?ow approach to computation. In data?ow, the computation takes place in a producer-consumer network of - dependent processing stations. Data travels in streams and is transformed as these streams pass through the processing stations (often called ?lters). Data?ow is an attractive model for many reasons, not least because it corresponds to the way p- duction,transportation,andcommunicationare typicallyorganizedin the real world (outside cyberspace). I myself stumbled into data?ow almost against my will. In the mid-1970s, Ed Ashcroft and I set out to design a "super" structured programming language that, we hoped, would radically simplify proving assertions about programs. In the end, we decided that it had to be declarative. However, we also were determined that iterative algorithms could be expressed directly, without circumlocutions such as the use of a tail-recursive function. The language that resulted, which we named LUCID, was much less traditional then we would have liked. LUCID statements are equations in a kind of executable temporallogic thatspecifythe (time)sequencesof variablesinvolvedin aniteration.
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Product details

  • Hardback | 259 pages
  • 162.56 x 236.22 x 25.4mm | 566.99g
  • New York, NY, United States
  • English
  • 2010 ed.
  • 7 Tables, black and white; XXIII, 259 p.
  • 1441909400
  • 9781441909404

Back cover copy

This book is about synchronous programming for the design of, safety critical, embedded systems, such as automotive systems, avionics, nuclear power plants and telecommunication systems. The techniques presented promote the use of formal concepts, i.e. those having a mathematically sound basis. Such concepts enable non ambiguous and rigorous reasoning about the critical properties of addressed systems in order to ensure their reliability. The synchronous programming language, SIGNAL, is used to demonstrate the pragmatic design of embedded systems. This is an invaluable tutorial/reference for scientists, practitioners and students.

Presents the best pedagogical illustration of embedded system design with a synchronous dataflow programming language;

Offers a complete overview of a language and its associated analysis techniques for the design of multi-clocked embedded systems;

Describes a formal specification language that provides users with design and analysis tools to guarantee the reliability of safety-critical, embedded systems;

Enables "correct-by-construction" designs for modern embedded systems, built on distributed architectures.

Among synchronous programming paradigms, Polychrony stands out for its ability to specify dataflow relationally, its freedom from single clock driven semantics, and its clock calculus that allows one to infer when single clock driven sequential software implementation is implied by the specification, and when refinements are required for such implementation. The SIGNAL language embodies Polychrony. There has been a void in the literature for a good single source which researchers can refer to, for learning the SIGNAL language, its semantics, and its usage.

Abdoulaye Gamatie has successfully used the SIGNAL language and the Polychrony toolset to implement realistic designs in the past. I believe that his book on the SIGNAL language will certainly be a very valuable resource for anyone interested in learning the SIGNAL language and its multi-clock semantics, and how to use it to specify and implement embedded software in a refinement methodology supported by extensive theory and tools developed at INRIA, Rennes.

----- Sandeep Shukla, Virginia Polytechnic and State University
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Table of contents

Real-time and synchronous programming.- Generalities on Real-Time Programming.- Synchronous Programming: Overview.- Elementary concepts and notations of SIGNAL.- Basics: Signals and Relations.- Programming Units: Processes.- Extended Constructs.- Design in P: First Steps.- Formal properties of SIGNAL programs.- Formal Semantics.- Formal Model for Program Analysis.- Compilation of Programs.- Advanced design in SIGNAL.- Advanced Design Concepts.- GALS System Design.- Design Patterns.- A Synchronization Example Design with P.
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