Hello,

A few years ago, I identified a bug in the HID implementation on the FCDP+:

http://www.funcubedongle.com/?page_id=1073#comment-72288

I'd like to work with Howard to fix this, as it causes lock-ups on both macOS and FreeBSD when using the FCDP+ and gqrx.

(Short summary: Reading a HID report endpoint should always return the most current report, even if that contains no data. This is why using HID as a general-purpose data transfer mechanism is A Bad Thing. Shame on Microsoft for encouraging people to use it that way.)

Thanks,

--- Zach N0ZGO