Title :
Hyperperiod bus scheduling and optimizations for TDL components
Author :
Farcas, Emilia ; Pree, Wolfgang
Author_Institution :
Univ. of California, San Diego
Abstract :
The Timing Definition Language (TDL) provides a component model and a tool chain as a solution for building time-safe components that can be developed independently and integrated in a distributed platform without changing the observable behavior and the code of existing components. TDL is based on the logical execution time abstraction and supports the decomposition of hard realtime applications into modules that are executed logically in parallel. This paper presents the algorithms for automatic schedule generation of TDL communications over the hyperperiod. As modules may switch modes independently, we combine the messages from all modes in the schedule. Hence, we introduce several optimizations to save bandwidth and improve the schedule´s feasibility.
Keywords :
distributed processing; object-oriented programming; scheduling; specification languages; TDL communications; Timing Definition Language; automatic schedule generation; component model; hyperperiod bus scheduling; logical execution time abstraction; time-safe components; Automotive engineering; Bandwidth; Communication switching; Costs; Embedded software; Embedded system; Programming; Scheduling algorithm; Switches; Timing;
Conference_Titel :
Emerging Technologies and Factory Automation, 2007. ETFA. IEEE Conference on
Conference_Location :
Patras
Print_ISBN :
978-1-4244-0825-2
Electronic_ISBN :
978-1-4244-0826-9
DOI :
10.1109/EFTA.2007.4416926