C++ in the World of Embedded Systems - Vladimir Vishnevskii - CppCon 2022
In this presentation, Vladimir Vishnevskii explores the role of C++ in embedded systems. He discusses the characteristics of embedded systems, their development processes, relevant programming languages, and the specific challenges presented when integrating C++ with embedded hardware. The talk aims to bridge the gap between software engineering and embedded engineering through knowledge exchange.
Introduction to Embedded Systems
Embedded systems are specialized computing systems that operate as part of larger systems, often found in modern devices like automobiles or smart appliances. These systems may have limited resources, real-time processing requirements, and critical safety standards.
Characteristics of Embedded Systems
Embedded systems can be grouped based on resource limitations, real-time processing, safety and mission-critical requirements, and general functionality. Developers must navigate challenges such as limited memory, processing power, and the trade-offs that come with these constraints.
C++ is suitable for embedded development due to its low-level access capabilities, performance, and the presence of extensive libraries. However, attention must be paid to compiler support and limited access to C++ standard libraries on many embedded platforms.
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Memory Management and Resource Constraints
Effective memory management is crucial for embedded systems. C++ developers must consider the overhead of dynamic memory allocation and strive for deterministic behavior in real-time applications, which may involve avoiding heap allocation and exceptions.
Testing and Code Quality
Code quality before deployment is paramount in embedded systems to ensure reliability. Developers are encouraged to use practices such as test-driven development to maximize productivity and reduce errors.
Leveraging C++ Features
Vishnevskii discusses how C++ features such as templates, polymorphism, and standard libraries can aid in creating robust embedded applications. He also mentions niche C++ frameworks developed specifically for embedded environments that help developers navigate platform constraints.
Best Practices and Conclusion
The presentation concludes with an emphasis on best practices for C++ development in the embedded domain, highlighting the relevance of existing C++ methodologies and the value of communication and knowledge transfer between software and hardware engineering communities.