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Periodic threads on aJ-100

December 2004

Abstract

At Vitus Bering Denmark we want to use the aJ-100 Java processor as a real-time processor for industrial purposes. To meet the condition of real-time, the aJile API has a class PeriodicThread together with a class PianoRoll.

However, the documentation of these classes is inadequate thus we have described and tested the conditions which must be satisfied for using the piano roll and the periodic threads.

Because there are many conditions that must hold when initializing the piano roll and the periodic threads, we have implemented a class CheckCylicSetup to check these setup conditions. This class uses the Rate Monotonic scheme to setup the periodic threads.


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