Real-Time Agility: The Harmony/ESW Method for Real-Time and Embedded Systems Development
Real-time and embedded systems face the same development challenges as traditional software: shrinking budgets and shorter timeframes. However, these systems can be even more difficult to successfully develop due to additional requirements for timeliness, safety, reliability, minimal resource use, and, in some cases, the need to support rigorous industry standards.
In Real-Time Agility, leading embedded-systems consultant Bruce Powel Douglass reveals how to leverage the best practices of agile development to address all these challenges. Bruce introduces the Harmony/ESW process: a proven, start-to-finish approach to software development that can reduce costs, save time, and eliminate potential defects.
Replete with examples, this book provides an ideal tutorial in agile methods for real-time and embedded-systems developers. It also serves as an invaluable “in the heat of battle” reference guide for developers working to advance projects, both large and small.
Coverage includes
- How Model-Driven Development (MDD) and agile methods work synergistically
- The Harmony/ESW process, including roles, workflows, tasks, and work products
- Phases in the Harmony/ESW microcycle and their implementation
- Initiating a real-time agile project, including the artifacts you may (or may not) need
- Agile analysis, including the iteration plan, clarifying requirements, and validation
- The three levels of agile design: architectural, mechanistic, and detailed
- Continuous integration strategies and end-of-the-microcycle validation testing
- How Harmony/ESW’s agile process self-optimizes by identifying and managing issues related to schedule, architecture, risks, workflows, and the process itself
Why Read This Book
You will learn how to adapt agile principles to the special constraints of real-time and embedded development using the Harmony/ESW method, with concrete guidance on balancing timeliness, safety, and iterative delivery. The book gives practical process patterns, modeling guidance, and organizational advice so you can reduce risk and deliver embedded software more predictably.
Who Will Benefit
Embedded software engineers, architects, and technical leads (and their managers) who must deliver firmware or RTOS-based systems under timing, safety, or regulatory constraints.
Level: Intermediate — Prerequisites: Practical experience with embedded software development or firmware projects; familiarity with basic real-time concepts (scheduling, deadlines) and a working knowledge of UML or software architecture is helpful.
Key Takeaways
- Apply agile and iterative practices to real-time and embedded projects without sacrificing timing or safety requirements.
- Define and use an architecture- and risk-driven Harmony/ESW process tailored to embedded constraints.
- Model requirements, interfaces, and designs effectively (using UML concepts) to improve communication and reduce integration risk.
- Design and partition systems to isolate real-time/safety-critical concerns and enable incremental delivery.
- Integrate verification, testing, and validation activities into iterative cycles to support safety and reliability goals.
- Measure progress and manage risk with metrics and milestones appropriate for embedded systems and certification contexts.
Topics Covered
- 1. The Challenge of Real-Time and Embedded Development
- 2. Agile Principles and Real-Time Constraints
- 3. Overview of the Harmony/ESW Method
- 4. Requirements, Use Cases, and Scenarios for Embedded Systems
- 5. Architecture, Partitioning, and Design Patterns
- 6. Modeling with UML for Real-Time Systems
- 7. Iterative Development, Planning, and Releases
- 8. Integration, Verification, and Test Strategies
- 9. Safety, Certification, and Regulatory Considerations
- 10. Configuration Management, Builds, and Automation
- 11. Scaling the Process Across Teams and Organizations
- 12. Case Studies and Practical Examples
- Appendices: Tools, Templates, and Checklists
Languages, Platforms & Tools
How It Compares
Covers similar process-grounded territory as Douglass's own Real-Time UML but focuses more on agile process and organizational adoption; for lower-level firmware and hardware interfacing guidance, pair it with hands-on titles like Making Embedded Systems by Elecia White.
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