HidD_SetNumInputBuffers() is a great way to be sure that no USB HID IN
transactions are lost.

Are there any known limits to the number or overall size of the HID IN
buffers that I can set?

I have been able to use 500 40byte buffers without a problem in XP. And over
1200 in WinME.

Are the rules documented somewhere?

Thanks,
Jim

Re: HidD_SetNumInputBuffers by Kumar

Kumar
Wed Aug 06 17:51:21 CDT 2003

The max size of hidclass ring buffer in w2k/xp/ws2k3 is 512. This
information will be added to the DDK docs.

kumar
---
This posting is provided "AS IS" with no warranties, and confers no rights.

"Jim Walsh" <DrJimWalshREM@OVEcomcast.net> wrote in message
news:u8tW$5tWDHA.1280@tk2msftngp13.phx.gbl...
> HidD_SetNumInputBuffers() is a great way to be sure that no USB HID IN
> transactions are lost.
>
> Are there any known limits to the number or overall size of the HID IN
> buffers that I can set?
>
> I have been able to use 500 40byte buffers without a problem in XP. And
over
> 1200 in WinME.
>
> Are the rules documented somewhere?
>
> Thanks,
> Jim
>
>



Re: HidD_SetNumInputBuffers by Kumar

Kumar
Fri Aug 08 20:39:43 CDT 2003

Yes, it is the number of buffers.

kumar
======
This posting is provided "AS IS" with no warranties, and confers no rights.


"Jim Walsh" <DrJimWalshREM@OVEcomcast.net> wrote in message
news:OZm5NwaXDHA.2284@TK2MSFTNGP10.phx.gbl...
> Kumar,
>
> Thanks for your reply.
>
> I am assuming that is 512 buffers, not 512 bytes. Is that right?
>
> Jim
>
> "Kumar Rajeev [MS]" <kumar@online.microsoft.com> wrote in message
> news:3f31866e$1@news.microsoft.com...
> > The max size of hidclass ring buffer in w2k/xp/ws2k3 is 512. This
> > information will be added to the DDK docs.
> >
> > kumar
> > ---
> > This posting is provided "AS IS" with no warranties, and confers no
> rights.
> >
> > "Jim Walsh" <DrJimWalshREM@OVEcomcast.net> wrote in message
> > news:u8tW$5tWDHA.1280@tk2msftngp13.phx.gbl...
> > > HidD_SetNumInputBuffers() is a great way to be sure that no USB HID IN
> > > transactions are lost.
> > >
> > > Are there any known limits to the number or overall size of the HID IN
> > > buffers that I can set?
> > >
> > > I have been able to use 500 40byte buffers without a problem in XP.
And
> > over
> > > 1200 in WinME.
> > >
> > > Are the rules documented somewhere?
> > >
> > > Thanks,
> > > Jim
> > >
> > >
> >
> >
>
>