Linux cdc-acm-driver

[Manavendra Nath Manav]

Hi Stefan

On Thu, Mar 1, 2012 at 7:51 PM, Stefan Dreyer
<stefan.dreyer at ddnetservice.net> wrote:
> Hi,
>
>
>
> Am 01.03.2012 14:57, schrieb Manavendra Nath Manav:
>
>> The Metrologic scanner is working perfectly in bi-directional serial
>> mode. But when I configure it as USB HID Keyboard mode as shown in the
>> link and keyboard layout as US-English, I am not getting any data from
>> Scanner. I have opened a terminal and scanned multiple barcodes but no
>> output on screen.
>>
>> [root at pe1800xs e518816]# dmesg
>> [98498.945783] input: Honeywell Scanning and Mobility Honeywell
>> Scanning and Mobility Scanner as
>> /devices/pci0000:00/0000:00:1d.1/usb7/7-2/7-2:1.0/input/input20
>> [98498.945850] generic-usb 0003:0C2E:0200.0011: input,hidraw2: USB HID
>> v1.11 Keyboard [Honeywell Scanning and Mobility Honeywell Scanning and
>> Mobility Scanner] on usb-0000:00:1d.1-2/input0
>>
>> [root at pe1800xs e518816]# lsusb -v
>> Bus 007 Device 020: ID 0c2e:0200 Metro Metrologic Scanner
>> [root at pe1800xs e518816]# cat /proc/bus/usb/devices
>> T:  Bus=07 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 20 Spd=1.5 MxCh= 0
>> D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
>> P:  Vendor=0c2e ProdID=0200 Rev=58.88
>> S:  Manufacturer=Honeywell Scanning and Mobility
>> S:  Product=Honeywell Scanning and Mobility Scanner
>> C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=450mA
>> I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID  ) Sub=01 Prot=01 Driver=usbhid
>> E:  Ad=81(I) Atr=03(Int.) MxPS=   8 Ivl=10ms
>>
>> Can you help me in getting data from Scanner in USB HID Keyboard
>> Emulation mode as this would reduce the burden of using an extra
>> driver and the application program can read directly from the
>> emulation keyboard instead of listening to serial device.
>
>
> For me, that looks good. But i never have any problems using the scanner in
> Keyboard-Mode. Are all the necessary drivers loaded
> (usbcore,hid,usbhid,...)
> What happens, if you plug a new USB-Keyboard in. Does it works? Did you try
> to recall factory-settings before? Maybe the Keyboard-mode is disabled
> somewhere else.
>
> you can test all the input-devices, in directory /dev/input there must be
> device-files named event0 ... eventN (You could identify it via directory:
> /dev/input/by-id, if you have it on fedora 14)
> you can test them via
> # cat /dev/input/event9 | hexdump
> If you scan codes, the hexdump of the keycodes is shown.
>

I scanned all the required bar-codes to make Metrologic MS1690 work as
USB HID Keyboard, it is being detected and driver usbhid attached to
it, but I am not able to see any output on console. The output is fine
when it is configured in serial mode. However, hexdump shows keycodes.
I attached another standard USB Dell keyboard and it is working fine.

[98498.945783] input: Honeywell Scanning and Mobility Honeywell
Scanning and Mobility Scanner as
/devices/pci0000:00/0000:00:1d.1/usb7/7-2/7-2:1.0/input/input20
[98498.945850] generic-usb 0003:0C2E:0200.0011: input,hidraw2: USB HID
v1.11 Keyboard [Honeywell Scanning and Mobility Honeywell Scanning and
Mobility Scanner] on usb-0000:00:1d.1-2/input0

[root at pe1800xs input]# cat /proc/bus/usb/devices
T:  Bus=07 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 20 Spd=1.5 MxCh= 0
D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0c2e ProdID=0200 Rev=58.88
S:  Manufacturer=Honeywell Scanning and Mobility
S:  Product=Honeywell Scanning and Mobility Scanner
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=450mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID  ) Sub=01 Prot=01 Driver=usbhid
E:  Ad=81(I) Atr=03(Int.) MxPS=   8 Ivl=10ms

[root at pe1800xs ~]# ll /dev/input/by-id/
total 0
lrwxrwxrwx 1 root root 9 Feb 29 15:46
usb-Dell_Dell_QuietKey_Keyboard-event-kbd -> ../event2
lrwxrwxrwx 1 root root 9 Feb 29 17:17
usb-Dell_Dell_USB_Entry_Keyboard-event-kbd -> ../event5
lrwxrwxrwx 1 root root 9 Mar  1 19:10
usb-Honeywell_Scanning_and_Mobility_Honeywell_Scanning_and_Mobility_Scanner-event-kbd
-> ../event6

[root at pe1800xs input]# cat event6 | hexdump
0000000 8be0 4f50 ef90 0009 0004 0004 0027 0007
0000010 8be0 4f50 ef97 0009 0001 000b 0001 0000
0000020 8be0 4f50 ef98 0009 0000 0000 0000 0000
0000030 8be0 4f50 0ecf 000a 0004 0004 0027 0007
0000040 8be0 4f50 0ed4 000a 0001 000b 0000 0000
0000050 8be0 4f50 0ed5 000a 0000 0000 0000 0000
*** snip ***

I am getting hexdump after scanning bar-codes, but why it is not
coming on console as it should like a standard keyboard.

-- 
Manavendra Nath Manav