Hello everybody.
This is my first message at this forum. Nice to be here.
I work on an application involving GUI controller (Windows8), prototype board (stm32f4Discovery) and a Joystick.
Joystick and the board connected to PC through USB, so the control path is:
------------------------
Joystick - PC - Board
------------------------
I modified original Discovery Firmware as HID device with 2 endpoints (IN and OUT).
The board enumeration is OK (no complaints from Windows).
However Plug and Play system reports "Problem: The device failed to start (Code 10)..".
My Windows HID client (controller) doesn't even see the board.
USBLyzer Device tree shows:
-------------------------------------
Port 4: USB Input Device This is my board
HID-compliant Mouse (Where this Mouse comes from?)
-------------------------------------
The Mouse baffles me as there is nothing in descriptors about it.
So, my question is:
---------------------------------
What makes PnP system think that my device provides a Mouse function?
---------------------------------
Thanks for any help
APPENDIX
The descriptors as seen by USBLyzer
(Note: smilies are displayed instead of "8" in some places. Not my intention)
USB properties
--------------
Connection Status Device connected
Current Configuration 1
Speed Full (12 Mbit/s)
Device Address 14
Number Of Open Pipes 2
Device Descriptor
Offset Field Size Value Description
0 bLength 1 12h
1 bDescriptorType 1 01h Device
2 bcdUSB 2 0200h USB Spec 2.0
4 bDeviceClass 1 00h Class info in Ifc Descriptors
5 bDeviceSubClass 1 00h
6 bDeviceProtocol 1 00h
7 bMaxPacketSize0 1 40h 64 bytes
8 idVendor 2 0483h SGS
10 idProduct 2 5710h
12 bcdDevice 2 0200h 2.00
14 iManufacturer 1 01h "STMicroelectronics"
15 iProduct 1 02h ""
16 iSerialNumber 1 03h "00000000011C"
17 bNumConfigurations 1 01h
Configuration Descriptor 1
Offset Field Size Value Description
0 bLength 1 09h
1 bDescriptorType 1 02h Configuration
2 wTotalLength 2 0029h
4 bNumInterfaces 1 01h
5 bConfigurationValue 1 01h
6 iConfiguration 1 00h
7 bmAttributes 1 E0h Self Powered, Remote Wakeup
4..0: Reserved ...00000
5: Remote Wakeup ..1..... Yes
6: Self Powered .1...... Yes
7: Reserved (set to one)
(bus-powered for 1.0) 1.......
8 bMaxPower 1 32h 100 mA
Interface Descriptor 0/0 HID, 2 Endpoints
Offset Field Size Value Description
0 bLength 1 09h
1 bDescriptorType 1 04h Interface
2 bInterfaceNumber 1 00h
3 bAlternateSetting 1 00h
4 bNumEndpoints 1 02h
5 bInterfaceClass 1 03h HID
6 bInterfaceSubClass 1 00h
7 bInterfaceProtocol 1 00h
8 iInterface 1 00h
HID Descriptor
Offset Field Size Value Description
0 bLength 1 09h
1 bDescriptorType 1 21h HID
2 bcdHID 2 0111h 1.11
4 bCountryCode 1 00h
5 bNumDescriptors 1 01h
6 bDescriptorType 1 22h Report
7 wDescriptorLength 2 0024h 36 bytes
Endpoint Descriptor 81 1 In, Interrupt, 10 ms
Offset Field Size Value Description
0 bLength 1 07h
1 bDescriptorType 1 05h Endpoint
2 bEndpointAddress 1 81h 1 In
3 bmAttributes 1 03h Interrupt
1..0: Transfer Type ......11 Interrupt
7..2: Reserved 000000..
4 wMaxPacketSize 2 0040h 64 bytes
6 bInterval 1 0Ah 10 ms
Endpoint Descriptor 01 1 Out, Interrupt, 10 ms
Offset Field Size Value Description
0 bLength 1 07h
1 bDescriptorType 1 05h Endpoint
2 bEndpointAddress 1 01h 1 Out
3 bmAttributes 1 03h Interrupt
1..0: Transfer Type ......11 Interrupt
7..2: Reserved 000000..
4 wMaxPacketSize 2 0040h 64 bytes
6 bInterval 1 0Ah 10 ms
Interface 0 HID Report Descriptor Vendor-Defined 1
Item Tag (Value) Raw Data
Usage Page (Vendor-Defined 157) 06 9C FF
Usage (Vendor-Defined 1) 09 01
Collection (Application) A1 01
Report ID (1) 85 01
Usage (Vendor-Defined 2) 09 02
Logical Minimum (0) 15 00
Logical Maximum (-1) 25 FF
Report Size (
75 08
Report Count (63) 95 3F
Input (Cnst,Var,Abs,NWrp,Lin,Pref,NNul,Bit) 81 03
Report ID (2) 85 02
Usage (Vendor-Defined 2) 09 02
Logical Minimum (0) 15 00
Logical Maximum (-1) 25 FF
Report Size (
75 08
Report Count (63) 95 3F
Output (Data,Var,Abs,NWrp,Lin,Pref,NNul,Vol,Bit) 91 82
End Collection C0
Usage (Vendor-Defined 2) 09 02
Usage Maximum (Undefined) 29 00
Usage (Vendor-Defined 33) 09 21
Logical Maximum (0) 24
Usage Page 07 05 81 03 40
Usage 0A 07 05
