5

I have a second USB keyboard I'd like my computer to recognize as a gamepad rather than just an extra keyboard. Is this possible on Ubuntu 14.04?

I've seen information on doing the opposite, treating a gamepad as a keyboard, but this is not what I'm looking for.

1 Answer 1

3

You could disable the keyboard from other applications with "xinput float" or "xinput --disable" or by disabling it in xorg.conf (turn auto add devices off and configure the devices you want)

Then you could write an application that reads events from the floating keyboard or from /dev/input/eventX and sends gamepad events to /dev/uinput.

New uinput device is created with an ioctl to /dev/uinput and events sent by writing uinput_user_dev structs to /dev/uinput. There is a python library for that: http://tjjr.fi/sw/python-uinput/

A quick proof of concept could be written by piping output of "xinput test-xi2 number" to a python-uinput program.

3
  • An alternative to disabling the keyboard with xinput is to to "grab" the /dev/input/eventX device. See evtest --grab for a command-line program that does it.
    – dirkt
    Mar 31, 2017 at 16:36
  • I have since purchased some gamepads, and I'm not about to go dig up an old keyboard to try this, but I'm accepting it anyway because I like it.
    – Ian Hunter
    Apr 1, 2017 at 14:42
  • is there a GUI app available ? I need something that is an alternative to vjoy in windows
    – Subin
    Jul 28, 2018 at 18:25

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.