Re: [Bluez-users] Epox Barton keyboard: HID create error 53

[Matthias Thomae <bluez@thomae-privat.de>]

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Hi Marcel,

Marcel Holtmann wrote:
>>Hmm, I had a look at the USB "Device Class Definiton for HID" document, 
>>and at net/bluetooth/hidp/hid.[h,c], but I think I will need much more 
>>time to understand how to analyse a HID Report Descriptor.
>>
>>Do you know of any tools to faciliate analysing/generating Report 
>>Descriptors?
> 
> look at the links on my HID page.

I did, attached is how far I got in decoding the descriptor, using the 
HID Specifications and the Descriptor Tool.
There are some values (marked with '?') which I can't find in 
Hut1_11.pdf, but the basic structure should be there.

Next I would have a closer look at the hid parser, but I'm not sure when 
I get to do this...

Regards.
Matthias

[-- Attachment #2: barton.txt --]
[-- Type: text/plain, Size: 3014 bytes --]

USAGE_PAGE (Generic Desktop)			05 01
USAGE (Keyboard)				09 06
COLLECTION (Application)			A1 01 
  USAGE_PAGE (Keyboard)				05 07
  REPORT_ID (1)					85 01 
  USAGE_MINIMUM (Keyboard LeftControl)		19 E0
  USAGE_MAXIMUM (Keyboard Right GUI)		29 E7
  LOGICAL_MINIMUM (0)				15 00 
  LOGICAL_MAXIMUM (1)				25 01 
  REPORT_SIZE (1)				75 01 
  REPORT_COUNT (8)				95 08 
  INPUT (Data,Var,Abs)				81 02 
  REPORT_SIZE (8)				75 08 
  REPORT_COUNT (1)				95 01 
  INPUT (Cnst,Ary,Abs)				81 01 
  USAGE_PAGE (Keyboard)				05 07
  USAGE_MINIMUM (Reserved (no event indicated))	19 00
  USAGE_MAXIMUM (?)				2A 00 FF
  LOGICAL_MINIMUM (0)				15 00 
  LOGICAL_MAXIMUM (65280)			26 00 FF
  REPORT_SIZE (8)				75 08 
  REPORT_COUNT (6)				95 06 
  INPUT (Data,Ary,Abs)				81 00 
  USAGE_PAGE (LEDs)				05 08
  REPORT_ID (1)					85 01 
  USAGE_MINIMUM (Num Lock)			19 01
  USAGE_MAXIMUM (Kana)				29 05
  REPORT_SIZE (1)				75 01 
  REPORT_COUNT (5)				95 05 
  OUTPUT (Data,Var,Abs)				91 02 
  REPORT_SIZE (3)				75 03 
  REPORT_COUNT (1)				95 01 
  OUTPUT (Cnst,Ary,Abs)				91 01 
END_COLLECTION					C0
USAGE_PAGE (Consumer Devices)			05 0C
USAGE (Consumer Control)			09 01
COLLECTION (Application)			A1 01 
  REPORT_ID (2)					85 02 
  USAGE_PAGE (Consumer Devices)			05 0C
  LOGICAL_MINIMUM (0)				15 00 
  LOGICAL_MAXIMUM (1)				25 01 
  REPORT_SIZE (1)				75 01 
  REPORT_COUNT (18)				95 12 
  USAGE (Stop)					09 B7
  USAGE (Play/Pause)				09 CD
  USAGE (Scan Next Track)			09 B5
  USAGE (Scan Previous Track)			09 B6
  USAGE (AL Consumer Control Configuration)	0A 83 01
  USAGE (Volume Down)				09 EA
  USAGE (Volume Up)				09 E9
  USAGE (Mute)					09 E2
  USAGE (AC Bookmarks )				0A 2A 02
  USAGE (AL Email Reader)			0A 8A 01
  USAGE (AC Home )				0A 23 02
  USAGE (AL Local Machine Browser )		0A 94 01
  USAGE (AL Calculator)				0A 92 01
  USAGE (AC Refresh )				0A 27 02
  USAGE (AC Stop )				0A 26 02
  USAGE (AC Search )				0A 21 02
  USAGE (AC Forward )				0A 25 02
  USAGE (AC Back )				0A 24 02
  INPUT (Data,Var,Abs)				81 02 
  REPORT_SIZE (1)				75 01 
  REPORT_COUNT (6)				95 06 
  INPUT (Cnst,Ary,Abs)				81 01 
END_COLLECTION					C0
USAGE_PAGE (Generic Desktop)			05 01
USAGE (System Control)				09 80
COLLECTION (Application)			A1 01 
  REPORT_ID (3)					85 03 
  LOGICAL_MINIMUM (0)				15 00 
  LOGICAL_MAXIMUM (1)				25 01 
  USAGE (Keyboard Volume Down)			09 81
  USAGE (Keyboard Locking Caps Lock)		09 82
  USAGE (Keyboard Locking Num Lock)		09 83
  REPORT_SIZE (3)				75 03 
  REPORT_COUNT (1)				95 01 
  INPUT (Data,Var,Abs)				81 02 
  REPORT_COUNT (5)				95 05 
  REPORT_SIZE (1)				75 01 
  INPUT (Cnst,Ary,Abs)				81 01 
END_COLLECTION					C0
USAGE_PAGE (Generic Device Controls)		05 06
USAGE (?)					09 01
COLLECTION (Application)			A1 01 
  REPORT_ID (255)				85 FF 
  REPORT_COUNT (1)				95 01 
  REPORT_SIZE (2)				75 02 
  USAGE (?)					09 24
  USAGE (?)					09 26
  INPUT (Data,Var,Abs)				81 02 
  REPORT_SIZE (6)				75 06 
  INPUT (Cnst,Ary,Abs)				81 01 
END_COLLECTION					C0