Kernel Datastream Example

Data stream obtained with evtest. This data stream is valid for an Intuos Pro USB device as of October 2020.

Input driver version is 1.0.1
Input device ID: bus 0x3 vendor 0x56a product 0x357 version 0x110
Input device name: "Wacom Intuos Pro M Pen"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 320 (BTN_TOOL_PEN)
    Event code 321 (BTN_TOOL_RUBBER)
    Event code 322 (BTN_TOOL_BRUSH)
    Event code 323 (BTN_TOOL_PENCIL)
    Event code 324 (BTN_TOOL_AIRBRUSH)
    Event code 326 (BTN_TOOL_MOUSE)
    Event code 327 (BTN_TOOL_LENS)
    Event code 329 (?)
    Event code 330 (BTN_TOUCH)
    Event code 331 (BTN_STYLUS)
    Event code 332 (BTN_STYLUS2)
  Event type 3 (EV_ABS)
    Event code 0 (ABS_X)
      Value      0
      Min        0
      Max    44800
      Fuzz       4
      Resolution     200
    Event code 1 (ABS_Y)
      Value      0
      Min        0
      Max    29600
      Fuzz       4
      Resolution     200
    Event code 2 (ABS_Z)
      Value      0
      Min     -900
      Max      899
      Resolution     287
    Event code 8 (ABS_WHEEL)
      Value      0
      Min        0
      Max     2047
    Event code 24 (ABS_PRESSURE)
      Value      0
      Min        0
      Max     8191
    Event code 25 (ABS_DISTANCE)
      Value      0
      Min        0
      Max       63
    Event code 26 (ABS_TILT_X)
      Value      0
      Min      -64
      Max       63
      Resolution      57
    Event code 27 (ABS_TILT_Y)
      Value      0
      Min      -64
      Max       63
      Resolution      57
    Event code 40 (ABS_MISC)
      Value      0
      Min   -2147483648
      Max   2147483647
  Event type 4 (EV_MSC)
    Event code 0 (MSC_SERIAL)
Properties:
  Property type 0 (INPUT_PROP_POINTER)

Some notes about the usage of the above values:

• ''ABS_MISC'' is used for the tool ID.
• ''MSC_SERIAL'' is used for the tool serial numbers.
• ''BTN_TOOL_PEN'' and ''BTN_TOOL_RUBBER'' are the two indicators for pen or eraser (in X11 driver lingo), thus if ''BTN_TOOL_PEN'' is set, the front end of the stylus is in proximity.
• ''BTN_TOUCH'' indicates if the current tool (pen/eraser) is touching the surface.
• ''BTN_STYLUS'' and ''BTN_STYLUS2'' are the side buttons on the pen.

Example for Eraser usage, first proximity then touch:

Event: time 1602304891.339001, type 3 (EV_ABS), code 0 (ABS_X), value 13837
Event: time 1602304891.339001, type 3 (EV_ABS), code 1 (ABS_Y), value 14160
Event: time 1602304891.339001, type 3 (EV_ABS), code 26 (ABS_TILT_X), value -31
Event: time 1602304891.339001, type 3 (EV_ABS), code 27 (ABS_TILT_Y), value 2
Event: time 1602304891.339001, type 3 (EV_ABS), code 2 (ABS_Z), value 450
Event: time 1602304891.339001, type 3 (EV_ABS), code 25 (ABS_DISTANCE), value 63
Event: time 1602304891.339001, type 1 (EV_KEY), code 321 (BTN_TOOL_RUBBER), value 1
Event: time 1602304891.339001, type 4 (EV_MSC), code 0 (MSC_SERIAL), value -1149235178
Event: time 1602304891.339001, type 3 (EV_ABS), code 40 (ABS_MISC), value 2058
Event: time 1602304891.339001, -------------- SYN_REPORT ------------

...

Event: time 1602304891.506966, type 3 (EV_ABS), code 0 (ABS_X), value 12684
Event: time 1602304891.506966, type 3 (EV_ABS), code 1 (ABS_Y), value 12275
Event: time 1602304891.506966, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 336
Event: time 1602304891.506966, type 3 (EV_ABS), code 25 (ABS_DISTANCE), value 8
Event: time 1602304891.506966, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1602304891.506966, type 4 (EV_MSC), code 0 (MSC_SERIAL), value -1149235178
Event: time 1602304891.506966, -------------- SYN_REPORT ------------

Example for pad usage (PAD ID is 15):

Event: time 1602304499.355859, type 1 (EV_KEY), code 264 (BTN_8), value 1
Event: time 1602304499.355859, type 3 (EV_ABS), code 40 (ABS_MISC), value 15
Event: time 1602304499.355859, -------------- SYN_REPORT ------------
Event: time 1602304499.645853, type 1 (EV_KEY), code 264 (BTN_8), value 0
Event: time 1602304499.645853, type 3 (EV_ABS), code 40 (ABS_MISC), value 0
Event: time 1602304499.645853, -------------- SYN_REPORT ------------
Event: time 1602304502.898821, type 1 (EV_KEY), code 263 (BTN_7), value 1
Event: time 1602304502.898821, type 3 (EV_ABS), code 40 (ABS_MISC), value 15
Event: time 1602304502.898821, -------------- SYN_REPORT ------------
Event: time 1602304503.148888, type 1 (EV_KEY), code 263 (BTN_7), value 0
Event: time 1602304503.148888, type 3 (EV_ABS), code 40 (ABS_MISC), value 0
Event: time 1602304503.148888, -------------- SYN_REPORT ------------
Event: time 1602304534.052501, type 3 (EV_ABS), code 8 (ABS_WHEEL), value 12
Event: time 1602304534.052501, type 3 (EV_ABS), code 40 (ABS_MISC), value 15
Event: time 1602304534.052501, -------------- SYN_REPORT ------------