[sane-devel] add a Canon scanner to scanbuttond
t.rechberger at gmail.com
Thu Dec 12 19:58:36 UTC 2013
still there is something missing, i guess in the backend there needs to
be a special way in how to get the data from USB.
When i fire up wireshark in Linux i dont see any communication between
scanner and host when the button is pressed.
When i watch it under XP i see that every second a packet is sent:
Offset Field Size Value Description
0 bmRequestType 1 C0h
4..0: Recipient ...00000 Device
6..5: Type .10..... Vendor
7: Direction 1....... Device-to-Host
1 bRequest 1 0Ch
2 wValue 2 008Ah
4 wIndex 2 00E4h
6 wLength 2 0001h
When the button is pressed, the data is 04, otherwise 00.
Not much clue what to do with it.
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