[sane-devel] New unsuppotred device - Umax AstraScan 4750

[Aleš Nesrsta]

Hi all,

I tried to report unsupported device via
http://www.meier-geinitz.de/tinc?key=rDoQ7lrj&formname=adddev
but it fails with some error written in German language which I don't
understand.

So, I am trying to report unsupported device via this mail list - sorry,
if it is wrong place or my report is duplicate to some another etc.

If there is somebody interested to create sane-backend to this device I
can help him e.g. by dumping Windows USB communication via SniffUSB
according to some detailed instructions.

Best regards
Ales


The unsupported device is Umax AstraScan 4750, there are some details:

Manufacturer: Umax
Model Name: AstraScan 4750
Bus type: USB
Vendor ID: 0x07b3
Product ID: 0x0802
Chipset: unknown

Comments:
Windows: The support CD (supplied with device) creates folder "Plustek
OpticPro ST28 V4.0.0" in Start->Programs menu, i.e. it looks like this
device is maybe some another variant of Plustek OpticPro ST28.
(Hardware ID from Windows driver is USB\Vid_07b3&Pid_0802&Rev_0303)


Data:
sane-find-scanner -v -v:

<device descriptor of 0x07b3/0x0802 at 001:003 (PLUSTEK USB2.0 SCANNER)>
bLength               18
bDescriptorType       1
bcdUSB                2.00
bDeviceClass          255
bDeviceSubClass       255
bDeviceProtocol       255
bMaxPacketSize0       64
idVendor              0x07B3
idProduct             0x0802
bcdDevice             3.03
iManufacturer         1 (PLUSTEK)
iProduct              5 (USB2.0 SCANNER)
iSerialNumber         0 ()
bNumConfigurations    1
 <configuration 0>
 bLength              9
 bDescriptorType      2
 wTotalLength         39
 bNumInterfaces       1
 bConfigurationValue  1
 iConfiguration       0 ()
 bmAttributes         192 (Self-powered)
 MaxPower             10 mA
  <interface 0>
   <altsetting 0>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   0
   bAlternateSetting  0
   bNumEndpoints      3
   bInterfaceClass    255
   bInterfaceSubClass 255
   bInterfaceProtocol 255
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      2 (bulk)
    wMaxPacketSize    512
    bInterval         0 ms
    bRefresh          0
    bSynchAddress     0
    <endpoint 1>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x02 (out 0x02)
    bmAttributes      2 (bulk)
    wMaxPacketSize    512
    bInterval         0 ms
    bRefresh          0
    bSynchAddress     0
    <endpoint 2>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x83 (in 0x03)
    bmAttributes      3 (interrupt)
    wMaxPacketSize    1
    bInterval         8 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 USB chip looks like a GL842 (result from sane-backends 1.0.21)>

found USB scanner (vendor=0x07b3 [PLUSTEK], product=0x0802 [USB2.0
SCANNER], chip=GL842) at libusb:001:003


cat /proc/bus/usb/devices:

T:  Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#=  3 Spd=480  MxCh= 0
D:  Ver= 2.00 Cls=ff(vend.) Sub=ff Prot=ff MxPS=64 #Cfgs=  1
P:  Vendor=07b3 ProdID=0802 Rev= 3.03
S:  Manufacturer=PLUSTEK
S:  Product=USB2.0 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= 512 Ivl=0ms
E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=83(I) Atr=03(Int.) MxPS=   1 Ivl=16ms