[sane-devel] MyPen driver

[Richard Ulrich]

Hi,

I just subscribed to this list.

After asking C-Channel multiple times for a linux driver for their
PayPen family of devices, I decided to buy a cheap one from eBay and see
what I can do myself. 

The USB ID was recognized, but that was about it. 
Bus 002 Device 010: ID 0a93:0002 C Technologies AB C-Pen 10

This is how it looks:
http://www.wetter.ch/portrait/files/468/00020992-mypen_20.3.03.jpg

Searching on the internet I found out that there are similar devices,
but none of them seems to be really supported on linux.
http://lists.alioth.debian.org/pipermail/sane-devel/2009-February/024028.html
http://www.sane-project.org/unsupported/c-channel-mypen-pro.html

Now if I want to give it a try developing a driver, how should I
proceed?

Rgds
Richard

Here is the output of $sane-find-scanner -v -v

This is sane-find-scanner from sane-backends 1.0.22

  # sane-find-scanner will now attempt to detect your scanner. If the
  # result is different from what you expected, first make sure your
  # scanner is powered up and properly connected to your computer.

searching for SCSI scanners:
checking /dev/scanner... failed to open (Invalid argument)
checking /dev/sg0... failed to open (Access to resource has been denied)
...
checking /dev/sgz... failed to open (Invalid argument)
  # No SCSI scanners found. If you expected something different, make
sure that
  # you have loaded a kernel SCSI driver for your SCSI adapter.

searching for USB scanners:
checking /dev/usb/scanner... failed to open (Invalid argument)
...
checking /dev/usbscanner15... failed to open (Invalid argument)
trying libusb:

... 
<device descriptor of 0x0a93/0x0002 at 002:010>
bLength               18
bDescriptorType       1
bcdUSB                2.00
bDeviceClass          255
bDeviceSubClass       0
bDeviceProtocol       0
bMaxPacketSize0       8
idVendor              0x0A93
idProduct             0x0002
bcdDevice             1.17
iManufacturer         1 ()
iProduct              2 ()
iSerialNumber         3 ()
bNumConfigurations    1
 <configuration 0>
 bLength              9
 bDescriptorType      2
 wTotalLength         32
 bNumInterfaces       1
 bConfigurationValue  1
 iConfiguration       0 ()
 bmAttributes         160 (Remote Wakeup)
 MaxPower             200 mA
  <interface 0>
   <altsetting 0>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   0
   bAlternateSetting  0
   bNumEndpoints      2
   bInterfaceClass    255
   bInterfaceSubClass 0
   bInterfaceProtocol 255
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      3 (interrupt)
    wMaxPacketSize    8
    bInterval         1 ms
    bRefresh          0
    bSynchAddress     0
    <endpoint 1>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x82 (in 0x02)
    bmAttributes      3 (interrupt)
    wMaxPacketSize    64
    bInterval         1 ms
    bRefresh          0
    bSynchAddress     0

<trying to find out which USB chip is used>
    checking for GT-6801 ...
    this is not a GT-6801 (bcdUSB = 0x200)
    checking for GT-6816 ...
    this is not a GT-6816 (bDeviceClass = 255, bInterfaceClass = 255)
    checking for GT-8911 ...
    this is not a GT-8911 (check 1, bDeviceClass = 255, bInterfaceClass
= 255)
    checking for MA-1017 ...
    this is not a MA-1017 (bDeviceClass = 255, bInterfaceClass = 255)
    checking for MA-1015 ...
    this is not a MA-1015 (bcdUSB = 0x200)
    checking for MA-1509 ...
    this is not a MA-1509 (bcdUSB = 0x200)
    checking for LM983[1,2,3] ...
    this is not a LM983x (bcdUSB = 0x200)
    checking for GL646 ...
    this is not a GL646 (bDeviceClass = 255, bInterfaceClass = 255)
    checking for GL646_HP ...
    this is not a GL646_HP (bcdUSB = 0x200)
    checking for GL660+GL646 ...
    this is not a GL660+GL646 (bDeviceClass = 255, bInterfaceClass =
255)
    checking for GL84x ...
    this is not a GL84x (bDeviceSubClass = 0x0)
    checking for ICM532B ...
    this is not a ICM532B (check 2, bcdUSB = 0x200)
    checking for PV8630/LM9830 ...
    this is not a PV8630/LM9830 (bDeviceClass = 255)
    checking for M011 ...
    this is not a M011 (bcdUSB = 0x200)
    checking for RTS8822 ...
    this is not a RTS8822 (bDeviceClass = 255)
    checking for rts8858c ...
    this is not a rts8858c (bDeviceClass = 255)
    checking for SQ113 ...
    this is not a SQ113 (bDeviceClass = 255)
    checking for HP4500C/4570C/5500C/5550C/5590/7650 chipset ...
    this is not a HP4500C/4570C/5500C/5550C/5590/7650 chipset
(bDeviceSubClass = 0x0)
    checking for rts8801/rts8891 ...
    this is not a rts8801/rts8891 (bDeviceClass = 255)
<Couldn't determine the type of the USB chip (result from sane-backends
1.0.22)>

found USB scanner (vendor=0x0a93, product=0x0002) at libusb:002:010

...

  # Your USB scanner was (probably) detected. It may or may not be
supported by
  # SANE. Try scanimage -L and read the backend's manpage.

  # Not checking for parallel port scanners.

  # Most Scanners connected to the parallel port or other proprietary
ports
  # can't be detected by this program.

  # You may want to run this program as root to find all devices. Once
you
  # found the scanner devices, be sure to adjust access permissions as
  # necessary.
done