Programming microcontrollers is a different paradigm from microprocessor programming. The traditional way to program microcontrollers is to write the program in C or an assembly language, but modern embedded systems are more complex. The Priority-based Functional Reactive Programming (P-FRP) paradigm could make microcontroller programming better. P-FRP makes it possible to treat programs as functions (stateless) and amenable to proofs and type-safety. In this paper, we focus on the abort-and-restart event handler semantics of P-FRP, which is neither a concurrency control policy nor a true scheduling policy. Instead, it is a policy in which the most important task is scheduled first. This paper refines the response time analysis for the abort-and-restart model on single-core systems. *
Ada is found in most Avionics processing. It is often the hidden software that makes life safe in systems that fly most passenger/private aircrafts. In an effort to promote the use of Ada-2005 in more embedded systems, we will present a Distributed Stack Resource Policy(DSRP) suitable for synchronizing tasks executing on distributed systems, meaning the protocol relies only on message-passing between processors. Accordingly, we will present an empirical evaluation that tests the performance of the DSRP with the Distributed Priority Ceiling Protocol (DPCP) created by Rajkumar. To the best of our knowledge, no empirical distributed-based evaluation of the DPCP has ever been conducted prior to this. We will also discuss the efficacy of Ada and examine the resulting design issues and trade-offs, and the ability of the DSRP to manage multiple shared resources efficiently on distributed processors. ξ
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