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ArcRT - Version: 1 Architectural Design of Real-Time Software 3 days course Description This course examines the activities of high-level design of real-time and embedded systems software that's to be developed using a real-time operating system (RTOS). The class begins with a quick examination of some fundamental issues in real-time multitasking embedded application software design and development, and briefly reviews several modern techniques for real-time and embedded software requirements specification. It then quickly focuses on how to structure a software system that must execute within strict deadline and resource limits. Emphasis is placed on multitasking and timing behaviors, rather than object orientation. The class continues with a detailed examination of intertask communication and synchronization options including mutexes of several varieties. The next major subject area of the class is the evaluation of timing performance and quality of a real-time or embedded software design. The final (optional) subject of this class is the design of highly-available and safety-critical embedded systems, from an integrated software-hardware system-level perspective. This course is not a general course about software design theory, but rather it is highly focused on the design of deeply-embedded, time-constrained, resource-constrained multitasking software that will run under the control of a modern RTOS. Intended audience This course is intended for practicing real-time and embedded systems software system architects, project managers and technical consultants who have responsibility for designing, structuring and implementing the software for real-time and embedded computer systems using an RTOS. Prerequisites Course participants are expected to have thorough familiarity with at least one RTOS Objectives The participant will gain the skills necessary to do high-level design of software for real-time and embedded computer systems using a real-time operating system. This is a very practical, results-oriented course that will provide knowledge and skills that can be applied immediately. Topics Definitions / Real-Time Requirements Embedded / Real-Time Systems: Definitions and Issues Requirements Analysis: Context Diagram and Usage Scenarios Quick Overview of Entity-Relationship Diagrams, State Transition Diagrams and Statecharts What You Get in an RTOS, and What You Don't Get Identifying Tasks and Objects High-Level Software Architecture: Concurrency The Gomaa Guidelines for Decomposition into Tasks Exercise: Heart Rhythm Monitor - Design Partitioning Object Orientation for Embedded/Real-Time Software? 13 Methods for Intertask Communication The Correctness Killers: Deadlock, Lockout, Starvation Software Architecture: Intertask Data Communication Software Architecture: Intertask Synchronization Fine-Tuning of Intertask Communication Mutexes: Priority Inheritance and Priority Ceiling Modeling of Message Queues Exercise: Queuing Calculations for Medical Device A Plethora of Design Examples Standard Circuits" for Real-Time and Multitasking Software Design Design Patterns for Embedded Software Extended Example: Aircraft Fly-by-Wire Evaluating the Quality of a Multitasking Software Design Evaluating Real-Time and Multitasking Software Designs Performance Analysis: Individual Scenarios Performance Analysis: Task Scheduling Theory and Calculations Exercise: Medical System Performance Calculations

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