...but this USB device is more than a printer!
Hans Petter Selasky
hselasky at c2i.net
Sun Oct 3 08:18:08 UTC 2010
On Sunday 03 October 2010 01:19:18 dan wrote:
> Hi all,
>
> I'll go straight to the point.
> Here's the output from "usbconfig dump_device_desc"
>
> #*
> ugen0.3: <Samsung SCX-4100 Series Samsung> at usbus0, cfg=0 md=HOST
> spd=FULL (12Mbps) pwr=ON
>
> bLength = 0x0012
> bDescriptorType = 0x0001
> bcdUSB = 0x0110
> bDeviceClass = 0x0000
> bDeviceSubClass = 0x0000
> bDeviceProtocol = 0x0000
> bMaxPacketSize0 = 0x0008
> idVendor = 0x04e8
> idProduct = 0x3413
> bcdDevice = 0x0100
> iManufacturer = 0x0001 <Samsung>
> iProduct = 0x0002 <Samsung SCX-4100 Series>
> iSerialNumber = 0x0003 <8J21BAKYB28091W.>
> bNumConfigurations = 0x0001
> #*
>
> and here's the output from "usbconfig dump_curr_config_desc"
>
> #*
> ugen0.3: <Samsung SCX-4100 Series Samsung> at usbus0, cfg=0 md=HOST
> spd=FULL (12Mbps) pwr=ON
>
>
> Configuration index 0
>
> bLength = 0x0009
> bDescriptorType = 0x0002
> wTotalLength = 0x0020
> bNumInterfaces = 0x0001
> bConfigurationValue = 0x0001
> iConfiguration = 0x0000 <no string>
> bmAttributes = 0x00c0
> bMaxPower = 0x0000
>
> Interface 0
> bLength = 0x0009
> bDescriptorType = 0x0004
> bInterfaceNumber = 0x0000
> bAlternateSetting = 0x0000
> bNumEndpoints = 0x0002
> bInterfaceClass = 0x0007
> bInterfaceSubClass = 0x0001
> bInterfaceProtocol = 0x0002
> iInterface = 0x0000 <no string>
>
> Endpoint 0
> bLength = 0x0007
> bDescriptorType = 0x0005
> bEndpointAddress = 0x0003 <OUT>
> bmAttributes = 0x0002 <BULK>
> wMaxPacketSize = 0x0040
> bInterval = 0x0000
> bRefresh = 0x0000
> bSynchAddress = 0x0000
>
> Endpoint 1
> bLength = 0x0007
> bDescriptorType = 0x0005
> bEndpointAddress = 0x0081 <IN>
> bmAttributes = 0x0002 <BULK>
> wMaxPacketSize = 0x0040
> bInterval = 0x0000
> bRefresh = 0x0000
> bSynchAddress = 0x0000
> #*
>
> Userland software, such as sane-find-scanner, is currently sure this is
> is just a printer. I would like this device to introduce itself for what
> it is ... a printer + a color scanner.
> Is it feasible? Are there any well-established techniques to (try to)
> reach the goal?
>
> Thanks for any link/suggestion
>
Hi,
Maybe you have to switch some button on the printer. Only one driver can use a
set of IN and OUT endpoints at a time in an interface. Maybe the original
driver has a multiplexer on top?
--HPS
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