Hi Philipp, Thank you for the comprehensive overview.
> A couple of observations: > > (a) I find many PTDS have to be resubmitted many times before they get > handled by the device even if they are finished submitting early in the > frame remaining cycle. Transfers start after subsequent SOF after the submission is finished. Therefore, it should make no difference whether you finish submission early or late in the frame. I remember that from my experiments with a logic analyzer on usb bus. I have also seen that the ptd's for control transfers have to be resubmitted repeatedly. Maybe this is normal. > (b) I found better results by only using the SOF interrupt for timing (still > handle the other ints, but only on a SOF). Could you please elaborate on what you mean by better results here. Olav ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
