tslib yocto touch event is not working

mauriciokarrei — Thu, 08 Sep 2016 17:48:02 GMT

I'm trying to execute tslib in my yocto. The problem is that my touch screen is not recognized by the tslib (with ts_calibrate or ts_test).

If I use the evtest, it works perfectly, take a look:

ps: My device was recognized in "/dev/input/event0"

~# evtest
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0:      cyttsp5_mt
/dev/input/event1:      Logitech USB Receiver
/dev/input/event2:      Logitech USB Receiver

I'm selecting the "zero" device:
...
      Min        0
      Max        1
    Event code 57 (ABS_MT_TRACKING_ID)
      Value      0
      Min        0
      Max    65535
    Event code 58 (ABS_MT_PRESSURE)
      Value      0
      Min        0
      Max      255
Properties:
Property type 1 (INPUT_PROP_DIRECT)
Property type 1 (INPUT_PROP_DIRECT)
Testing ... (interrupt to exit)
Event: time 1472308931.862872, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 2
Event: time 1472308931.862872, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 92
Event: time 1472308931.862872, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 267
Event: time 1472308931.862872, type 3 (EV_ABS), code 58 (ABS_MT_PRESSURE), value 30
Event: time 1472308931.862872, type 3 (EV_ABS), code 48 (ABS_MT_TOUCH_MAJOR), value 12
Event: time 1472308931.862872, type 3 (EV_ABS), code 49 (ABS_MT_TOUCH_MINOR), value 12
Event: time 1472308931.862872, -------------- SYN_REPORT ------------
Event: time 1472308931.881448, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 93
...

I tried set the enviromental variables:
export TSLIB_TSEVENTTYPE=INPUT
export TSLIB_TSDEVICE=/dev/input/event0
export TSLIB_CALIBFILE=/etc/pointercal
export TSLIB_CONFFILE=/etc/ts.conf
export TSLIB_PLUGINDIR=/usr/lib/ts
export TSLIB_FBDEVICE=/dev/fb0
export TSLIB_CONSOLEDEVICE=none

I'm using QT5 to develop, and I'm starting the applications in this way.
export QWS_MOUSE_PROTO=tslib:/dev/input/event0
./app -platform eglfs "QWS_MOUSE_PROTO=tslib:/dev/input/event0"

My ts.conf file is:
/etc/ts.conf

module_raw input
module pthres pmin=1
module variance delta=30
module dejitter delta=100
module linear

I haven't any idea about the reason that it's not working.

Thanks

Re: tslib yocto touch event is not working

igorpadykov — Fri, 09 Sep 2016 11:15:22 GMT

Hi Mauricio

in general one can debug it as in

https://community.nxp.com/thread/293210

also it may be useful to look at usage of various touchscreens on below link

http://boundarydevices.com/configuring-i-mx6-machines-different-screens-nitrogen6x-sabre-lite/

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

i.MX ProcessorsのトピックRe: tslib yocto touch event is not working

tslib yocto touch event is not working

Re: tslib yocto touch event is not working