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From: Gavin Brewer on 9 May 2007 09:08
Hi Guys,

I have attempted to perform a USB Bulk read transfer over an EZ-USB FX2
development board. Vendor requests work fine, but using the
usb_bulk_read() functions returns the following error message:

"usb_submit_async: submitting request failed, win error: The parameter
is incorrect"

So far, we have established that the problem is on the peripheral (8051
FX2) side, and *not* on the host side.

Could anyone give me some advice as how to modify my firmware code, or
at least help me find out what is going on?

Thank you,
Gavin Brewer
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