Getting the USB port on your linux box to talk to your casio qv3000.

New stuff (2001-10-03)
The new linux kernel (2.4.10) includes not only a new VM subsystem, but
also patches to recognise and configure the QV3000 as a USB storage
module.  So, simple install your new kernel, plug your camera in,

Add the usb communication system, then storage module

/usr/src/linux/drivers/usb # modprobe usb-uhci
/usr/src/linux/drivers/usb # modprobe usb-storage

do this
echo "scsi add-single-device 1 0 0 0" >/proc/scsi/scsi
while 
cat /proc/scsi/scsi
does not show up the camera

Then mount your camera device as a fat system somewhere (see HERE below)



OLD STUFF

Download a kernel patch from http://www.harald-schreiber.de/

make sure your .config includes these

# USB support
#
CONFIG_USB=y
CONFIG_USB_DEBUG=y

# Miscellaneous USB options
#
CONFIG_USB_DEVICEFS=y
# CONFIG_USB_BANDWIDTH is not set

# USB Controllers
#
CONFIG_USB_UHCI=m
CONFIG_USB_UHCI_ALT=m
CONFIG_USB_OHCI=m

CONFIG_USB_STORAGE=m

#
# SCSI support
#
CONFIG_SCSI=y

CONFIG_BLK_DEV_SD=y
or
CONFIG_BLK_DEV_SD=m

CONFIG_VFAT_FS=y
CONFIG_PROC_FS=y

make bzImage
make modules
make modules_install
make install
depmod -b /lib/modules/2.4.2        # or wherever
reboot                              # strange but true

modprobe uhci     # or ohci depending on your hardware
modprobe usb-storage

OK, your kernel can talk USB to the camera.

Now in order to mount the CF2/Microdrive (which emulates a MSDOS filesystem)
you'll have to have a scsi disk subsystem either compiled in or added as
a module.

modprobe sd_mod   # if neccessary

Plug the camera in and put it in play mode.  You should see "USB" on the LCD display.

Be a little patient here, wait for comms to initialise, disks to spin up etc etc.

Now try
cat /proc/scsi/scsi

you should see a usb-storage device, something like

Host: scsi1 Channel: 00 Id: 00 Lun: 00
  Vendor: Casio    Model: QV DigitalCamera Rev: 9009
  Type:   Direct-Access                    ANSI SCSI revision: 02

If you don't (your kernel does not recognise it), try this

echo "scsi add-single-device 1 0 0 0" >/proc/scsi/scsi

Note:
    The generic form of the comand is
    echo "scsi add-single-device host channel ID LUN " > /proc/scsi/scsi

    so you'll have to judge parameters here depending on the configuration
    of you system.

:HERE

Make a mount point, i suggest either /camera or /mnt/camera.

This should map to the next available SCSI disk.
If this is your first SCSI device on your system (all IDE) then the kernel
will map it to /dev/sda1.

So either manually;

mount -t vfat /dev/sda1 /mnt/camera

or automatically; add

/dev/sda1       /mnt/camera     vfat            defaults,noauto,user    0 0

to your /etc/fstab file and type
mount /mnt/camera

I have tested read/write capability and it seems fine.  I've not had to
reformat anything yet either.

Thanks to Harald Schreiber <harald at harald-schreiber dot de> for help compiling
these notes.


Rex