Embedded Software Design and Patterns with C

• Embedded Software Design - Introduction
  • Definition of software design
  • Integration in the development process
  • The role of a software designer
• Object Orientation in C
  • Classes and objects
  • Relations: dependency, association, aggregation, composition, inheritance
  • Interfaces and virtual functions
  • Practical exercise: You design and implement classes and objects with different relations, execute them on an embedded target and test them. Each exercise will be part of the set-up of a measurement device application.
• Select Design Principles Implemented in C
  • DRY, KISS, avoid premature optimization
  • SLA, SRP, dependency inversion
  • Principle of least surprise
  • Open/closed principle, Law of Demeter, YAGNI
  • Source code conventions, MISRA
• Select Design Patterns
  • Software architecture patterns: layer, blackboard, pipes and filters, client server, model view controller (MVC), microkernel
  • Software design patterns: builder/manager, facade, strategy
  • Hardware access patterns: HW proxy, HW adapter, mediator, observer, debouncing, interrupt, polling
  • Safety and reliability, one's complement, CRC, smart data, channel, protected single channel, multi-channel (dual, triple), sanity check, monitor-actuator
  • Practical exercise: You use some of the above-mentioned patterns in the measurement device application
• State Machines
  • Design
  • Implementation variants: switch-case, table, state pattern
  • Practical exercise: You design and implement the object-oriented state machine in the measurement device application
• Operating System
  • Overview of mechanisms: task management, scheduler, synchronization, communication, resource management, time management, interrupt management, memory management
  • Practical example: Applying the mechanisms in the measurement device application
• Callback Structures
  • Communication between architecture elements
  • Design rules
  • Synchronous, asynchronous
  • Callback structure procedural and object-oriented
  • Callback structure with and without operating system
  • Variation options
  • High-quality software architecture with callback structures
  • Practical exercise: You design and implement an object-oriented callback structure in the measurement device application
• Hardware Driver Concepts and Interrupts
  • Architecture guidelines
  • Software layer patterns
  • Practical examples of software layer architectures
  • Object-oriented driver concepts
  • Interrupt handling
  • Practical tips: Standards and sources for driver concepts
  • Practical exercise: You design and implement a driver and the related driver access in the measurement device application
• Select Refactorings in C
  • Preconditions for successful refactoring
  • Small steps, big steps
  • Smells
  • Refactoring patterns
• Practical exercise
  • For the underlying practical exercise (measurement device application), you will use the Arm Keil MDK (microcontroller development kit) with real hardware based on an Arm Cortex-M3 microcontroller.
• MicroConsult Plus
  • All participants have the following options to further use their exercises and the solutions from this workshop:
  • You take a copy of your exercises and the solutions developed by MicroConsult with you on aYou e-mail the files to your account, or
  • You get access to file download on request.
  • You get all examples for C and UML models in electronic format and can easily adjust them to your development environment.
  • You moreover get a tool and software component overview for developing embedded software.
  • You get helpful notation overviews for UML (Unified Modeling Language) in A3 format.

Lernziele

• You get to know the programming principles and design patterns that are essential for embedded software development. You learn how to program them in C and use them in your projects.
• You learn all about object-oriented programming and implementation, including state machines in C, and get familiar with the mechanisms of an embedded/real-time operating system.
• This way, you can implement hardware drivers, interrupt concepts and callback structures in C.

Zielgruppe

• The training Embedded Software Design and Patterns with C addresses programmers, software developers, software designers and software architects using C for embedded software applications

Voraussetzungen

• Knowledge of C programming is required; a basic knowledge of microcontrollers is of advantage.