libftdi Archives

Subject: Win8 and Multiple interfaces

From: Steve Soloski <ssoloski@xxxxxxxxxxxxxx>
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Date: Fri, 30 May 2014 11:46:19 -0400
Hi all,

Once again, I'm stuck trying to open two interfaces under Win8 x64. I'm using WinUSB drivers, installed with libusbK-inf-wizard; I've tried installing the drivers as separate drivers for each interface and also as a single driver for the composite device and get the same error.

My code first opens Interface B to perform some control function on my device; then opens Interface A to grab an image stream. When trying to open the second interface, I get an "Access is denied" err. This same code works fine under Linux so it appears to be Window specific.

Does anyone have any pointers on how to get around this issue?

Thanks in advance for any help!

Steve


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