[sane-devel] Help with Canon 2700F

[abel deuring]

Lutz wrote:

> now the scanner is seen by scanimage -L - 
> but it does not work - if I continue with Lamp error, I finally end up with a 
> command sequence error.

> -----------------------------------
> and her comes the not so nice part
> -----------------------------------
> [canon] sense category: hardware error
> [canon] sense message: lamp failure
> [canon] << sense_handler
> [canon] << scan
> [canon] >> get_data_status
> [sanei_scsi] scsi_req_enter: entered 0x401ae008
> [sanei_scsi] sanei_scsi.issue: 0x401ae008
> [sanei_scsi] scsi_req_enter: queue_used: 1, queue_max: 2
> [sanei_scsi] sanei_scsi_req_wait: waiting for 0x401ae008
> [sanei_scsi] sanei_scsi.issue: 0x401ae008
> [sanei_scsi] sanei_scsi_req_wait: read 64 bytes
> [canon] << get_data_status
> [canon] >> GET DATA STATUS
> [canon] Scan Data Available=0
> [canon] Magnified Width=1938
> [canon] Magnified Length=485
> [canon] Rest Data=0 bytes
> [canon] Filled Data Buffer=0
> [canon] << GET DATA STATUS
> [canon] 323 pixels per line, 969 bytes, 485 lines high, total 469965 bytes, 
> dpi=340
> [canon] << sane_start
> [dll] sane_get_parameters(handle=0x80534c8,params=0xbfffdd30)
> [canon] >> sane_get_parameters
> [canon] sane_get_parameters: xres='340', yres='340', pixels_per_line='323', 
> bytes_per_line='969', lines='485'
> [canon] << sane_get_parameters
> P6
> # SANE data follows
> 323 485
> 255
> [dll] sane_read(handle=0x80534c8,data=0x8060f68,maxlen=32768,lenp=0xbfffdd0c)
> [canon] >> sane_read
> [canon]    sane_read: nread=32768, bytes_to_read=469965
> [canon] >> read_data
> [sanei_scsi] scsi_req_enter: entered 0x401ae008
> [sanei_scsi] sanei_scsi.issue: 0x401ae008
> [sanei_scsi] scsi_req_enter: queue_used: 1, queue_max: 2
> [sanei_scsi] sanei_scsi_req_wait: waiting for 0x401ae008
> [sanei_scsi] sanei_scsi.issue: 0x401ae008
> [sanei_scsi] sanei_scsi_req_wait: read 64 bytes
> [sanei_scsi] sanei_scsi_req_wait: SCSI command complained: Success
> [sanei_scsi] sense buffer: f0 00 45 00 00 00 00 06 00 00 00 00 2c 00 00 00
> [sanei_scsi] target status: 02 host status: 0000 driver status: 0008
> [canon] >> sense_handler modified lutz
> [canon] canon_sense_handler(3, 0x401ae060, 0x80737e8)
> [canon] sense buffer: f0 00 45 00 00 00 00 06 00 00 00 00 2c 00 00 00
> [canon] sense data interpretation for SCSI-2 devices
> [canon] sense category: illegal request
> [canon] sense message: command sequence error
> [canon] << sense_handler
> [sanei_scsi] sanei_scsi_req_wait: SG driver returned resid 65536
> [sanei_scsi]                      NOTE: This value may be bogus
> [canon] << read_data
> -----------------------------------
> hmmm.
> Windows asks for the film to be removed and does an initialization of the 
> scanner on first use after reboot - may be, this is what it expects?
> 
> any ideas which command this would be?

unfortunately, no idea... I even don't have an FS2700.

> 
> (...)
>>>I'm still on my way to find out where this structure gets initialized.
>>As already said: in the function attach.
> yes, but at the end of it - and after the call to test_unit_ready - at least 
> as I see it - which may be wrong. 

well, patch it ;) But keep in mind that the sense handler needs to
know the scanner model, so you can't use the sense handler before
that is defined in attach.

Abel