-------------------------------------------------------------------------------
USB HID (low-speed signalling)
-------------------------------------------------------------------------------

This is a set of example captures of USB/HID communication on the
keyboard/mouse combo device Riitek RT-MWK01.

Details:
http://www.riitek.com/product_Info.asp?id=56


HID dump
--------

For a HOWTO, see:
http://lists.en.qi-hardware.com/pipermail/discussion/2011-November/009206.html

  Usage Page (Desktop),               ; Generic desktop controls (01h)
  Usage (Mouse),                      ; Mouse (02h, application collection)
  Collection (Application),
      Usage (Pointer),                ; Pointer (01h, physical collection)
      Collection (Physical),
          Report ID (1),
          Report Count (3),
          Report Size (1),
          Usage Page (Button),        ; Button (09h)
          Usage Minimum (01h),
          Usage Maximum (03h),
          Logical Minimum (0),
          Logical Maximum (1),
          Input (Variable),
          Report Count (1),
          Report Size (5),
          Input (Constant),
          Report Size (8),
          Report Count (2),
          Usage Page (Desktop),       ; Generic desktop controls (01h)
          Usage (X),                  ; X (30h, dynamic value)
          Usage (Y),                  ; Y (31h, dynamic value)
          Logical Minimum (-127),
          Logical Maximum (127),
          Input (Variable, Relative),
      End Collection,
      Collection (Physical),
          Report Count (1),
          Report Size (8),
          Usage Page (Desktop),       ; Generic desktop controls (01h)
          Usage (Wheel),              ; Wheel (38h, dynamic value)
          Logical Minimum (-127),
          Logical Maximum (127),
          Input (Variable, Relative),
      End Collection,
  End Collection,
  Usage Page (Consumer),              ; Consumer (0Ch)
  Usage (Consumer Control),           ; Consumer control (01h, application collection)
  Collection (Application),
      Report ID (2),
      Usage Minimum (00h),
      Usage Maximum (AC Format),      ; AC format (023Ch, selector)
      Logical Minimum (0),
      Logical Maximum (572),
      Report Count (1),
      Report Size (16),
      Input,
  End Collection,
  Usage Page (Desktop),               ; Generic desktop controls (01h)
  Usage (Keyboard),                   ; Keyboard (06h, application collection)
  Collection (Application),
      Usage Page (Keyboard),          ; Keyboard/keypad (07h)
      Usage Minimum (KB Leftcontrol), ; Keyboard left control (E0h, dynamic value)
      Usage Maximum (KB Right GUI),   ; Keyboard right GUI (E7h, dynamic value)
      Logical Minimum (0),
      Logical Maximum (1),
      Report Size (1),
      Report Count (8),
      Input (Variable),
      Report Count (1),
      Report Size (8),
      Input (Constant),
      Report Count (5),
      Report Size (1),
      Usage Page (LED),               ; LEDs (08h)
      Usage Minimum (01h),
      Usage Maximum (05h),
      Output (Variable),
      Report Count (1),
      Report Size (3),
      Output (Constant),
      Report Count (6),
      Report Size (8),
      Logical Minimum (0),
      Logical Maximum (-107),
      Usage Page (Keyboard),          ; Keyboard/keypad (07h)
      Usage Minimum (None),           ; No event (00h, selector)
      Usage Maximum (KB LANG6),       ; Keyboard LANG6 (95h, selector)
      Input,
  End Collection


lsusb -v -d 1997:0409
---------------------

  Bus 002 Device 093: ID 1997:0409
  Device Descriptor:
    bLength                18
    bDescriptorType         1
    bcdUSB               2.00
    bDeviceClass            0 (Defined at Interface level)
    bDeviceSubClass         0 
    bDeviceProtocol         0 
    bMaxPacketSize0         8
    idVendor           0x1997 
    idProduct          0x0409 
    bcdDevice            2.00
    iManufacturer           1 Riitek
    iProduct                2 Micro Keyboard
    iSerial                 0 
    bNumConfigurations      1
    Configuration Descriptor:
      bLength                 9
      bDescriptorType         2
      wTotalLength           59
      bNumInterfaces          2
      bConfigurationValue     1
      iConfiguration          0 
      bmAttributes         0xa0
        (Bus Powered)
        Remote Wakeup
      MaxPower              100mA
      Interface Descriptor:
        bLength                 9
        bDescriptorType         4
        bInterfaceNumber        0
        bAlternateSetting       0
        bNumEndpoints           1
        bInterfaceClass         3 Human Interface Device
        bInterfaceSubClass      1 Boot Interface Subclass
        bInterfaceProtocol      1 Keyboard
        iInterface              0 
          HID Device Descriptor:
            bLength                 9
            bDescriptorType        33
            bcdHID               1.11
            bCountryCode            0 Not supported
            bNumDescriptors         1
            bDescriptorType        34 Report
            wDescriptorLength      63
           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     0x0008  1x 8 bytes
          bInterval              10
      Interface Descriptor:
        bLength                 9
        bDescriptorType         4
        bInterfaceNumber        1
        bAlternateSetting       0
        bNumEndpoints           1
        bInterfaceClass         3 Human Interface Device
        bInterfaceSubClass      1 Boot Interface Subclass
        bInterfaceProtocol      2 Mouse
        iInterface              0 
          HID Device Descriptor:
            bLength                 9
            bDescriptorType        33
            bcdHID               1.11
            bCountryCode            0 Not supported
            bNumDescriptors         1
            bDescriptorType        34 Report
            wDescriptorLength      94
           Report Descriptors: 
             ** UNAVAILABLE **
        Endpoint Descriptor:
          bLength                 7
          bDescriptorType         5
          bEndpointAddress     0x82  EP 2 IN
          bmAttributes            3
            Transfer Type            Interrupt
            Synch Type               None
            Usage Type               Data
          wMaxPacketSize     0x0008  1x 8 bytes
          bInterval              10
  Device Status:     0x0000
    (Bus Powered)


Logic analyzer setup
--------------------

The logic analyzer used was an ARMFLY Mini-Logic (at 24MHz):

  Probe       RT-MWK01
  --------------------
  0           DM
  1           DP


rt-mwk01.sr
-----------

The sigrok command line used was:

  sigrok-cli -d 0:samplerate=24mhz --time 1s -o rt-mwk01.sr --probes 1,2