On Friday 28 January 2011 09:42:57 Daniel O'Connor wrote: > On 28/01/2011, at 18:28, Hans Petter Selasky wrote: > > For this kind of applications ISOCHRONOUS transfers should be used. Then > > you can have a double buffer guard in the range 1-56ms, regardless of > > the buffer size the hardware uses. > > Hmm, OK, I will have a look at changing it, although it is a bit of a pain > because you can't stall an ISO EP and I'm using stall to indicate an > error.
Hi, There are some hard limits in the libusb source code. Just search for 16K in decimal. In the kernel the limit is bigger and I guess you don't need to change anything there. > Is it possible to change the amount that is buffered? This is a specialised > application so a custom kernel is no problem. Even a hint in the right > direction would be greatly appreciated :) > > > You could also try an XHCI controller, because the BULK buffering is done > > differently there. > > OK thanks, I'll try that too. --HPS _______________________________________________ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
