PORTS Forum

Ports and Interfaces => USB => Topic started by: tallman on February 25, 2014, 07:23:21 pm

Title: HID Composite vs. Multiple RepID's
Post by: tallman on February 25, 2014, 07:23:21 pm

Hello,
I have a composite device with HID mouse, touch, generic, and WINUSB.  I can see WINUSB vs HID, but do I really need to have 3 separate devices for the HID stuff, or can I just use a different repid for them?  I realize there could be other gains by having composite, but just to help me understand, it seems like I don't need the overhead except for winusb vs hid.

Thanks.
Brent

Title: Re: HID Composite vs. Multiple RepID's
Post by: Jan Axelson on February 25, 2014, 08:52:00 pm

Yes, you can implement multiple HID functions with multiple Collections in the report descriptor. Be aware that the functions will all share the same IN and OUT (if used) endpoints.

Title: Re: HID Composite vs. Multiple RepID's
Post by: tallman on February 26, 2014, 10:16:16 am

Thank you for this information. 
Brent