adding USB interface descriptor

[stm32]

Posted on May 26, 2013 at 19:53The original post was too long to process during our migration. Please click on the attachment to read the original post.

[tsuneo]

Posted on May 28, 2013 at 02:13

IAD (Interface Association Descriptor) should be applied to bind the interfaces on the original class, when it comes up in a composite device together with another interface(s).

By the USB spec, Audio may bind with other interfaces without IAD. But without IAD, Windows seem to allow limited classes of additional interfaces, such as HID. Tsuneo