Hi Roland On Friday 09 March 2007 20:09, roland Tollenaar wrote: > now that we have discovered the delay on and Rx interrupt, can anyone > perhaps tell what the delay is on sending a can frame? Is that also of > the order of 200 microseconds?
If we assume a similar number of bytes need to be written to the dongle as were read during a receive, I would expect to see a 20% increase in speed. This being based on a write using six outb() calls and a read using eight inb() per byte of the CAN frame. - This only applies to parallel port dongles, and I would expect dedicated PCI cards to be considerably faster.. As a side note - I see Kvaser[1] (and Peak [2]) do a PCMCIA card and supply source code for a driver. Not cheap, but an alternative if you are tied to a laptop for development. Regards, Paul. [1] http://www.kvaser.com/prod/hardware/lapcan_i.htm [2] http://www.phytec.com/products/can/pc-can-interfaces/peakpccard.html _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
