2007/3/9, roland Tollenaar <[EMAIL PROTECTED]>:
> > One way to reduce the time spent servicing IO instructions would be to switch > to a PCI based parport card (not sure if it would be compatable with the > driver & dongle).. Or alternatively use a PCI CANbus card. Developing from a laptop using PCI cards is a bit uncomfortable. Hence the choice for the parport. Also what improvement could I expect? Latencies of 100 micro seconds are still not that fantastic.
Strangely I have used CAN like this in a vxWorks environment where I was never aware of CAN disrupting RT behavior this badly.
I am only "listening" the conversation for learning a bit about xenomai usage and I am no CAN expert, but I think your implicit comparison is not fair. You seem to compare CAN usage under VxWorks on hardware which may be far away from your laptop + parallel port CAN I/F with Xenomai don't you ? By the way I understand that your conclusion may be that using Parport CAN I/F on Xenomai Laptop does not fit your need. -- Erk _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
