Linux Remote Key Mapping

I want to customize keys of the Logitech Presenter R800 remote. But the technique should be applicable to any keyboard.

Will need evtest

Information sources:

• source1;
• source2;
• Finding USB devices with lsusb & idVendor – idProduct;
• comments in /lib/udev/hwdb.d/60-keyboard.hwdb.

Steps

• connect your peripheral;
• run sudo evtest to examine events generated when you press the keys;
• add to /lib/udev/hwdb.d/60-keyboard.hwdb:

# Logitech Presenter R800
evdev:input:b0003v046DpC538*
 KEYBOARD_KEY_07004b=left
 KEYBOARD_KEY_07004e=right
 KEYBOARD_KEY_070029=playpause
 KEYBOARD_KEY_07003e=playpause
 KEYBOARD_KEY_070037=displaytoggle

• update hardware db by running:

  sudo systemd-hwdb update
  sudo udevadm trigger --verbose --sysname-match="event*"