[Discuss-gnuradio] claiming rx interface error

[Ujala Qasim]

Hi!

I am writing an interface between C and Windows for USRP. For this i need two separate usb_dev_handle objects one for command interface (udh) and one for rx interface (bulk_udh) however, whenever I try to claim the rx interface by calling the usb_claim_interface function it results in an error, the error code is -22 saying "The parameter is invalid". What could be the possible problem? Please help.

Thanks