Abstraction Layered Architecture: Writing Maintainable Embedded Code

摘要

The brisk pace of the growth in embedded technology depends largely on how fast we can write and maintain software contained within embedded devices. Every enterprise seeks to improve its productivity through maintainability. While many avenues for improvement exist, highly maintainable code bases that can stay that way over a long time are rare. This article proposes a reference software architecture for embedded systems aimed at improving long-term maintainability. This reference architecture, called the Abstraction Layered Architecture (ALA), is built on the existing body of knowledge in software architecture and more than two decades of experience in designing embedded software at Tru-Test Group, New Zealand. ALA can be used for almost any object-oriented software project, and strongly supports domain-specific abstractions such as those found in most embedded software.