[Libusb-win32-devel] Cannot retrieve configuration descriptor

[Winge M. <mic...@fr...>]

I still face the same problem which I have mention in the email with the =
subject " Problem with libusb driver version 0.1.12.1" to the =
lib...@li... email list.
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I installed my device driver (*.inf) and test my driver with TestLibUsb. =
TestLibUsb displays idVendor and idProduct. That means to me that the =
device is working since driver has access to the device descriptor. The =
problem is that the driver cannot retrieve the configuration of my =
device.
During debugging my application I found out that "config" pointer in =
"struct usb_device" is 0.
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I changed my window application so that I try to get the configuration =
with the libusb API "usb_get_descriptor" and it works. I get the =
configuration interface and endpoint descriptors.
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What could be the reason why libusb driver assign 0 to the "config" =
pointer in "struct usb_device"?
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Thank you for your help!
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Micha
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Best regards/Mit freundlichen Gr=FCssen

Michael Winge

MSG EMEA General Applications

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