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From: Darwin on 9 Mar 2010 11:05
Certainly I would suspect the hub before Windows 7. But also the Tracker you have may also be misleading since this is power state related.
I would use a CATC USBTracer it has 2 recording channels so you can record syncronised before and after the hub and isnt susceptable to mis-recording data when entering/leaving power states like the Ellisys. Thsi way you can isolate if it is the hub or the Tracer is the real problem



Alexander Grigoriev wrote:

Are you capturing data before or after the hub?
09-Mar-10

Are you capturing data before or after the hub? The hub could be of
store-and-forward type for OUT transactions, and corrupt the data in the
buffer.

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From: Slavo Tomascik on 9 Mar 2010 15:18
Obiously tracker is connected before hub, but capture was made also after hub
with the same results. I think, it's not Ellisys missrecording or HUB
problem. Also this error exact explain of the device behavior - device
receive wrong command, therefore readed device status (interrupt transfer)
never reach requested value.
This happen only when two or more devices communicate at the same time.
So, as you can seen in pictures (sent before), crc of USB packet is OK -
change of data must happen before they are send.

Thanks,
Slavo.

"Darwin" wrote:

> Certainly I would suspect the hub before Windows 7. But also the Tracker you have may also be misleading since this is power state related.
> I would use a CATC USBTracer it has 2 recording channels so you can record syncronised before and after the hub and isnt susceptable to mis-recording data when entering/leaving power states like the Ellisys. Thsi way you can isolate if it is the hub or the Tracer is the real problem
>
>
>
> Alexander Grigoriev wrote:
>
> Are you capturing data before or after the hub?
> 09-Mar-10
>
> Are you capturing data before or after the hub? The hub could be of
> store-and-forward type for OUT transactions, and corrupt the data in the
> buffer.
>
> Previous Posts In This Thread:
>
>
> Submitted via EggHeadCafe - Software Developer Portal of Choice
> What's New for Developers in SharePoint 2010 Object Model?
> http://www.eggheadcafe.com/tutorials/aspnet/84e8403e-a25c-49b7-a0d8-3e2773fa29b5/whats-new-for-developers.aspx
> .
>
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