Re: [Libusb-devel] Debugging, Try 2 :-)

[Peter S. <pe...@st...>]

TongKe Xue wrote:
> We have our own custom USB device. It only does async transfers
> (so we have to use 1.0 rather than 0.1)

This doesn't make much sense. Sync vs. async transfers is only
relevant on the host. The big difference between 0.1 and 1.0 in
what type of data can be transferred is that 0.1 doesn't do isoc
without a patch.

Async vs sync is about maximum attainable throughput. 1.0 has higher
performance, but no transfers on the bus are "async".

Nothing you do in your device, except an isoc pipe, requires 1.0.


//Peter