2

I'm attemping to use a VEIKK graphics tablet in Kubuntu 19.10. I've got a satisfactory setup so far, but the only thing remaining is remapping the stylus buttons. I feel like I have all the ingredients to do so, but can't figure out how to put it all together.

evtest identifies the input in question:

/dev/input/event3:  VEIKK S640 Pen

Running evtest on this input reports:

Input driver version is 1.0.1
Input device ID: bus 0x3 vendor 0x2feb product 0x1 version 0x100
Input device name: "VEIKK S640 Pen"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    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  15580
      Min        0
      Max    98304
      Resolution       1
    Event code 1 (ABS_Y)
      Value  13040
      Min        0
      Max    32768
      Resolution       1
    Event code 24 (ABS_PRESSURE)
      Value   1670
      Min        0
      Max     8192

And indeed, when pressing the stylus button, I see 

Event: time 1586123903.365325, type 1 (EV_KEY), code 331 (BTN_STYLUS), value 1

followed later by

Event: time 1586123903.499328, type 1 (EV_KEY), code 331 (BTN_STYLUS), value 0

What I would like to do is simply replace these generated events with different events, say 

type 1 (EV_KEY), code 30 (KEY_A), value 1

for the first and similarly for the second, so that pressing the stylus button is the same as pressing the a key down (and up) on the keyboard.

There are several closely related questions on this site, this being probably the closest, but the proposed solutions and final solution are quite kludgy. I've also prototyped writing a python-evdev script to "filter" these events into something, but that comes with its own problems.

So, is there any standard way to accomplish this using udev?

cemulate
  • 211

0 Answers0