Author Topic: HID Composite vs. Multiple RepID's  (Read 10180 times)

tallman

  • Member
  • ***
  • Posts: 25
HID Composite vs. Multiple RepID's
« 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

Jan Axelson

  • Administrator
  • Frequent Contributor
  • *****
  • Posts: 3033
    • Lakeview Research
Re: HID Composite vs. Multiple RepID's
« Reply #1 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.

tallman

  • Member
  • ***
  • Posts: 25
Re: HID Composite vs. Multiple RepID's
« Reply #2 on: February 26, 2014, 10:16:16 am »
Thank you for this information. 
Brent