Tom Jewell wrote:
I couldn't understand why in fact RES was being requested.
It's the only way to check if it is supported.
bLength13
bDescriptorType36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 5
On 03/23/2015 12:37 AM, Clemens Ladisch wrote:
Tom Jewell wrote:
I'm trying to debug some code that implements a feature unit in an
(incoming) USB device, based on an AT32UC3B1256 controller. The feature
unit contains only a volume control, for which the host requests and I
provide values for
Tom Jewell wrote:
I'm trying to debug some code that implements a feature unit in an
(incoming) USB device, based on an AT32UC3B1256 controller. The feature
unit contains only a volume control, for which the host requests and I
provide values for MAX, MIN, CUR, and RES. The host then tries
