Table Of Contents
Native support for HID input from the linux kernel¶
Support starts from 2.6.32-ubuntu, or 2.6.34.
To configure HIDInput, add this to your configuration:
[input]
# devicename = hidinput,/dev/input/eventXX
# example with Stantum MTP4.3" screen
stantum = hidinput,/dev/input/event2
Note
You must have read access to the input event.
You can use a custom range for the X, Y and pressure values. For some drivers, the range reported is invalid. To fix that, you can add these options to the argument line:
- invert_x : 1 to invert X axis
- invert_y : 1 to invert Y axis
- min_position_x : X minimum
- max_position_x : X maximum
- min_position_y : Y minimum
- max_position_y : Y maximum
- min_pressure : pressure minimum
- max_pressure : pressure maximum
- rotation : rotate the input coordinate (0, 90, 180, 270)
For example, on the Asus T101M, the touchscreen reports a range from 0-4095 for the X and Y values, but the real values are in a range from 0-32768. To correct this, you can add the following to the configuration:
[input]
t101m = hidinput,/dev/input/event7,max_position_x=32768,max_position_y=32768
New in version 1.9.1: rotation configuration token added.