This paper describes an agile development methodology which combines agile principles with organizational patterns and adapts them to build embedded real-time systems focusing on the system's constraints. The hardware/software partitioning and platform-based design are used in the proposed methodology to support the embedded system designer meet the system's constraints in an iterative and incremental way and to reduce substantially the design time and cost of the product. To discuss the strengths and weakness of this methodology, a case study involving a pulse oximeter is also presented.
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