#22 Logitech USB Optical Mouse Buffer Size

closed
nobody
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5
2004-12-25
2004-02-27
Anonymous
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Hello,

I have searched the online documentation and have yet
to find an explanation, I'd appreciate any help.

I have a USB optical mouse made by Logitech that I am
using with Windows XP. The mouse is functioning
perfectly. When I snoop the mouse, I am able to see
the correct initialization descriptors pass from device to
host.

However, after the initialization is over and the mouse is
actually sending its movement data, the Snooper says
that the mouse function driver is sending buffers of 0
length to the host. I know this cannot be possible as
the mouse is moving, and therefore sending some x/y
coordinate data.

Why does the Snooper say that these transfers are 0
length buffers?

I am hoping that understanding this transfer will be the
key to successfully writing a mouse function simulator
on an embedded pxa chip.

Thank you,

Colleen
colleen@tridsys.com

Discussion

  • Gene Wood
    Gene Wood
    2004-12-25

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    user_id=547273

    Colleen, wrong project. This is Snoopy not Snooper.

     
  • Gene Wood
    Gene Wood
    2004-12-25

    • status: open --> closed