Hi, I recently acquired Canon CanoScan 8000F (USB 2.0), which is not supported by SANE yet, and I'm thinking of writing a backend for it. Or at least try to reverse-engineer the protocol...
So the first question is, has anyone worked on this scanner yet? (Vendor=04a9 ProdID=220f, other details from /proc/bus/usb are at the end). Web search hasn't produced anything useful for me yet, except consistent complaints that Canon wouldn't release even the name of the chipset, saying nothing of the specs... Now, about breaking the protocol. I'm running VMWare (win2k) through USB v.1, and the scanner seems to be working fine. I installed SnoopyPro on the Windows side, but it stops snooping after the the first 120+ tiny control messages right after the scanner is plugged in. No data is logged when it actually scans. According to some other random source, it probably gets confused by the first bulk transfer. As an alternative, I've read in many places (including the archives of this mailing list) that it's possible to log USB messages from VMWare directly from the linux kernel module. Since I'm not familiar with the kernel code, I wonder if someone has already done this and can share the experience or a hacked usb module with me. Regards, Sergey. PS. The relevant portion of /proc/bus/usb/devices: T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 20 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=ff(vend.) Sub=ff Prot=ff MxPS=64 #Cfgs= 1 P: Vendor=04a9 ProdID=220f Rev= 3.01 S: Manufacturer=Canon S: Product=Scanner C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 10mA I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=83(I) Atr=03(Int.) MxPS= 1 Ivl=8ms
