Re: Fwd: Raw hid gadget

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On Tue, 10 Jan 2017, Greg KH wrote:

> On Mon, Jan 09, 2017 at 10:24:42PM +0200, Rogan Dawes wrote:
> > Sigh! This got bounced because of HTML parts.
> > 
> > Another question that arises, though:
> > 
> > What sort of performance can I expect writing to and reading from a
> > RAW HID gadget, configured using that descriptor?
> > 
> > My understanding is that I should be able to get 64kBps, based on a
> > 64-byte packet, and a 1000 packet per second limit.
> 
> Where do you get that per-second limit?
> 
> It's up to the host to pull from the device that fast, perhaps it's not
> really doing that?  Using usbmon should show you what is going on here
> exactly.

Or, if you're using a Windows host, a USB sniffer program.  (Does 
Wireshark on Windows work with USB traffic?)

Alan Stern

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