[libhid-discuss] unable to get input report
stdht.inbox at gmail.com
stdht.inbox at gmail.com
Tue Jan 13 08:44:23 UTC 2009
Hello
My device is an usb barcode scanner. It works in 2 modes: simulates
usb keyboard or acts like usb2serial device (general hid). I use it in mode 2 as
general hid device.
I used raw hid under linux and was able to read interrupt reports and
used function ioctl(HIDIOCGUSAGES,...) to retrieve all the array of
usages (about 63 values)...
Now I am using libhid. I receive interrupt reports without problems
but how to get array of usages????
hid_get_input_report with path 0xff03c00, 0xff030d03, 0xff030022
or 0xff03c00, 0xff030d03, 0xff030050 with lengths (1,63,64) fails
with code 20.
My hidtrace and related info:
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 16
idVendor 0x05e0 Symbol Technologies
idProduct 0x0600
bcdDevice 2.01
iManufacturer 1 ?Symbol Technologies, Inc, 2002
iProduct 2 Symbol Bar Code Scanner
iSerial 3 S/N:1BBFACCB09D4 Rev:NBRMIAAU5
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 34
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 4 Bus Powered
bmAttributes 0x80
(Bus Powered)
MaxPower 400mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Devices
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 1 Keyboard
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 40
Report Descriptor: (length is 40)
Item(Global): Usage Page, data= [ 0x03 0xff ] 65283
(null)
Item(Local ): Usage, data= [ 0x00 0x0c ] 3072
(null)
Item(Main ): Collection, data= [ 0x01 ] 1
Application
Item(Local ): Usage, data= [ 0x03 0x0d ] 3331
(null)
Item(Main ): Collection, data= [ 0x02 ] 2
Logical
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0x3f ] 63
Item(Local ): Usage, data= [ 0x50 ] 80
(null)
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x3f ] 63
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Local ): Usage, data= [ 0x22 ] 34
(null)
Item(Main ): Input, data= [ 0x00 ] 0
Data Array Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Main ): End Collection, data=none
Item(Main ): End Collection, data=none
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 10
Device Status: 0x0000
(Bus Powered)
TRACE: hid_dump_tree(): iterating the parse tree for USB device 003/030[0]...
parse tree of HIDInterface 003/030[0]:
path: 0xff030c00.0xff030d03.0xff030050; type: 0x80
path: 0xff030c00.0xff030d03.0xff030022; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
path: 0xff030c00.0xff030d03.0x00000000; type: 0x80
-----------------------------------------------------
Best regards,
Serge.
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