Available user inputs

The following user inputs are available on the D7:

Touch screen panel
Rotary encoder
Buttons

Test input events

The default application running on the D7 provides a way to test input events via GUI. To test via CLI, run evtest on the target shell.

root@imx8qxp-d7:~# evtest
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0:  system-controller:keys
/dev/input/event1:  d7-buttons
/dev/input/event2:  st1232-touchscreen
/dev/input/event3:  rotary-encoder
Select the device event number [0-3]:

Then enter the device event you want to test. This will show information about the selected device and then print the events that the device produces when they occur. To test events use the input.

Below snippet shows an example to test buttons:

root@imx8qxp-d7:~# evtest
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0:  system-controller:keys
/dev/input/event1:  d7-buttons
/dev/input/event2:  st1232-touchscreen
/dev/input/event3:  rotary-encoder
Select the device event number [0-3]: 1
Input driver version is 1.0.1
Input device ID: bus 0x19 vendor 0x1 product 0x1 version 0x100
Input device name: "d7-buttons"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 28 (KEY_ENTER)
    Event code 59 (KEY_F1)
    Event code 60 (KEY_F2)
    Event code 61 (KEY_F3)
    Event code 62 (KEY_F4)
    Event code 63 (KEY_F5)
    Event code 64 (KEY_F6)
Key repeat handling:
  Repeat type 20 (EV_REP)
    Repeat code 0 (REP_DELAY)
      Value    250
    Repeat code 1 (REP_PERIOD)
      Value     33
Properties:
Testing ... (interrupt to exit)
Event: time 1772619635.960337, type 1 (EV_KEY), code 59 (KEY_F1), value 1
Event: time 1772619636.215842, -------------- SYN_REPORT ------------
Event: time 1772619636.216390, type 1 (EV_KEY), code 59 (KEY_F1), value 0
Event: time 1772619636.216390, -------------- SYN_REPORT ------------
Event: time 1772619637.844333, type 1 (EV_KEY), code 60 (KEY_F2), value 1
Event: time 1772619637.844333, -------------- SYN_REPORT ------------
Event: time 1772619638.064332, type 1 (EV_KEY), code 60 (KEY_F2), value 0
Event: time 1772619638.064332, -------------- SYN_REPORT ------------
Event: time 1772619639.016350, type 1 (EV_KEY), code 61 (KEY_F3), value 1
Event: time 1772619639.016350, -------------- SYN_REPORT ------------
Event: time 1772619639.236326, type 1 (EV_KEY), code 61 (KEY_F3), value 0
Event: time 1772619639.236326, -------------- SYN_REPORT ------------
Event: time 1772619640.755230, type 1 (EV_KEY), code 28 (KEY_ENTER), value 1
Event: time 1772619640.755230, -------------- SYN_REPORT ------------
Event: time 1772619640.919925, type 1 (EV_KEY), code 28 (KEY_ENTER), value 0
Event: time 1772619640.919925, -------------- SYN_REPORT ------------
Event: time 1772619642.792336, type 1 (EV_KEY), code 62 (KEY_F4), value 1
Event: time 1772619642.792336, -------------- SYN_REPORT ------------
Event: time 1772619643.016325, type 1 (EV_KEY), code 62 (KEY_F4), value 0
Event: time 1772619643.016325, -------------- SYN_REPORT ------------
Event: time 1772619643.992399, type 1 (EV_KEY), code 63 (KEY_F5), value 1
Event: time 1772619643.992399, -------------- SYN_REPORT ------------
Event: time 1772619644.176343, type 1 (EV_KEY), code 63 (KEY_F5), value 0
Event: time 1772619644.176343, -------------- SYN_REPORT ------------
Event: time 1772619645.180337, type 1 (EV_KEY), code 64 (KEY_F6), value 1
Event: time 1772619645.180337, -------------- SYN_REPORT ------------
Event: time 1772619645.428320, type 1 (EV_KEY), code 64 (KEY_F6), value 0
Event: time 1772619645.428320, -------------- SYN_REPORT ------------
^C

Note: The rotary encoder can be rotated and pushed like a button. When the rotary encoder is pushed, the event is captured as a KEY_ENTER event.

Table of Contents

Available user inputs

Test input events