Hello!

Currently our device uses an old AT91 USB Framework version (~2006).

After having done some extensive tests on both ends of the cable, I found that the device does not seem to retry failed transmissions.

As stated in USB specification, non-acknowledged packets must be re-send by the sending device/host. I cannot find this functionality in USB framework.

Is it in code or probably in hardware?
Is the USB framework in softpack v1.5 the way to go?

Thank you for reading,
Paule