[xclaesse]

Hi,

I recently got an Abbot InsuLinx device, it is a glucometer for diabetics. I'm trying to reverse-engineer their protocol to fetch device's data.

On Windows when first plugged, it install their windows-only application. On linux the device is detected as a CDRom that I can mount. So the first step is to modeswitch the device. I sniffed the USB port on windows (see attached file) but I'm not sure how to know from those logs what usb_modeswitch needs to make the switch.

Before the switch, vid=0x1a61 pid=0x3460

Can someone help me on this?

[xclaesse]

lsusb information:

Code: Select all

Bus 003 Device 020: ID 1a61:3460 Abbott Diabetes Care 
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x1a61 Abbott Diabetes Care
  idProduct          0x3460 
  bcdDevice            1.00
  iManufacturer           1 
  iProduct                2 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           57
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          3 
    bmAttributes         0xc0
      Self Powered
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              4 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID              10.10
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      35
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               2
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              5 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0

[LOM]

Do you have any reason to believe that it should switch mode?
Flip-flop devices which needs to be mode switched usually have a single interface, the storage interface for the virtual cd-rom containing the Windows software/drivers.

Your device has the virtual cd-rom interface but has also got a HID interface, I think you should concentrate on logging data arriving on that one.
It is very likely that the data on the HID interface is the data from the pump that you are searching for.

[xclaesse]

Ah ok, both interfaces can be used in parallel, indeed. Ok forget me