Book Image

The Complete Edition - Software Engineering for Real-Time Systems

By : Jim Cooling
Book Image

The Complete Edition - Software Engineering for Real-Time Systems

By: Jim Cooling

Overview of this book

From air traffic control systems to network multimedia systems, real-time systems are everywhere. The correctness of the real-time system depends on the physical instant and the logical results of the computations. This book provides an elaborate introduction to software engineering for real-time systems, including a range of activities and methods required to produce a great real-time system. The book kicks off by describing real-time systems, their applications, and their impact on software design. You will learn the concepts of software and program design, as well as the different types of programming, software errors, and software life cycles, and how a multitasking structure benefits a system design. Moving ahead, you will learn why diagrams and diagramming plays a critical role in the software development process. You will practice documenting code-related work using Unified Modeling Language (UML), and analyze and test source code in both host and target systems to understand why performance is a key design-driver in applications. Next, you will develop a design strategy to overcome critical and fault-tolerant systems, and learn the importance of documentation in system design. By the end of this book, you will have sound knowledge and skills for developing real-time embedded systems.
Table of Contents (16 chapters)
Preface
15
Glossary of terms

8.4 Choosing a High-Level Language for Embedded Systems

8.4.1 Basic Requirements

Before choosing a high-level programming language, four fundamental questions need to be answered:

  • Which language features do we really need (essential requirements)?
  • Which language features are needed to produce high-quality software (primary requirements)?
  • Which language features would be really useful (secondary requirements and performance assessment)?
  • Which language features would be nice to have (flavor of the month (take your pick))?

(a) Essential Features

Essential features are those needed for the development of application software for loading onto a "bare-bones" embedded machine. A minimal set of requirements includes:

  • Assembly language and machine code interfacing
  • Absolute addressing
  • Access to and control of hardware
  • Interrupt handling
  • Bit manipulation
  • Processor (or environment) specific extensions to the core language
  • ...