Re: Q : how to write USB driver under Windows ?

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Use isochronous USB traffic in your device, and you will be realtime.

--
Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
maxim@xxxxxxxxxxxxxxxx
http://www.storagecraft.com

<5.d@xxxxxxx> wrote in message
news:1130784873.491576.53690@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Robert Marquardt wrote:
> > 5.d@xxxxxxx wrote:
> >
> > > Hi all,
> > >
> > > I'm going to develop an electronic card with analog inputs,
> > > its data will be A/N converted and sent in real time
> > > to a PC running under Windows XP.
> >
> > This means you lost before you even started.
> > Please tell more about "real time".
>
> Well, this is not realtime, like for instance data
> transfer to a PC from a video analog source.
> The analog source comes from sensors thru (a bit of)
> electronic adaptation (impedance, amplification, A/N)
> No problem about buffering on the "device" itself the
> numeric data flow coming from the A/D converters if needed.
> No question here about real time, bitrate, or electronics.
>
> The point is, I need a *good* *professional* source
> of information about how to write a device driver
> to control an USB port on a PC running Windows.
>
> I hope I made it clear this time,
> sorry for the misunderstanding.
>


.



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