pneves.bib

@inproceedings{FONSECA_ICC_2000,
  author = {Fonseca, J. A. and Martins, E. and Almeida, L. and Pedreiras, P. and Neves, P.},
  title = {Flexible Time-Triggered Protocol for CAN: new scheduling and dispatching solutions},
  booktitle = {7th International CAN Conference (ICC'2000) Proceedings},
  year = {2000},
  editor = {},
  volume = {},
  series = {},
  pages = {},
  address = {New Orleans, USA},
  month = {June},
  organization = {},
  publisher = {},
  doi = {},
  issn = {},
  isbn = {},
  keywords = {CAN, FTT-CAN},
  note = {},
  key = {},
  abstract = {One of the possibilities to build robust communication systems with respect to their temporal behaviour is to use autonomous control based on the time-triggered paradigm. The FTT-CAN - flexible time-triggered protocol, relies on centralised scheduling but makes use of the CAN native distributed arbitration to reduce communication overhead. There, a planning scheduler is used within a master node to reduce the scheduling run-time overhead. On-line changes to the communication requirements can then be made under guaranteed timeliness. In addition FTT-CAN also allows an efficient combination of both time-triggered and event-triggered traffic with temporal isolation. In this paper, recent evolutions of the initial protocol definition concerning transmission of synchronous and asynchronous messages are presented. These consist in a time division of the elementary transmission window which optimises the available bandwidth for asynchronous messages, keeping the timeliness of synchronous messages without jeopardising their transmission jitter. A novel solution for the planning scheduler is also presented. It consists in an FPGA-based coprocessor which implements the planning scheduler technique without imposing overhead to the arbiter CPU. With it, it is possible to reduce strongly the plan duration thus allowing on-line admission demanded by system elements and, also, to extend the protocol application to high-speed networks}
}