Regarding UsbBuildInterruptOrBulkTransferRequest().

Hi,

We are writting a camera driver for USB 2.0 device. Basically our camera
has one BULK pin which has maximumsize as 512 bytes. If we make the
UsbBuildInterruptOrBulkTransferRequest() call with transfer size as 512,
it seems to be working. But if we tried to use our actual frame size (ie,
320 * 240), the system crashes. Is it possible to use more than 512 bytes
in this UsbBuildInterruptOrBulkTransferRequest call ?

Any suggestion or observations are most welcome.

Thanks in Advance,

Ravindran Ramaraj,
Bangalore,
India.

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you should specify SHORT_TRANSFER_OK in teh URB. what is the callstack for
the crash?

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"ravip" <ajravi2000@nospam.yahoo.com> wrote in message
news:f0b14918fa45ffa562872f8b0b708265@localhost.ta lkaboutsoftware.com...
> Hi,
>
> We are writting a camera driver for USB 2.0 device. Basically our camera
> has one BULK pin which has maximumsize as 512 bytes. If we make the
> UsbBuildInterruptOrBulkTransferRequest() call with transfer size as 512,
> it seems to be working. But if we tried to use our actual frame size (ie,
> 320 * 240), the system crashes. Is it possible to use more than 512 bytes
> in this UsbBuildInterruptOrBulkTransferRequest call ?
>
> Any suggestion or observations are most welcome.
>
> Thanks in Advance,
>
> Ravindran Ramaraj,
> Bangalore,
> India.
>
> --
> Message posted using
> http://www.talkaboutsoftware.com/gro...ce_driver.dev/
> More information at http://www.talkaboutsoftware.com/faq.html
>
>