[Buildroot] Problem with Touchscreen on ARM

Guillaume sétan setan.buildroot at gmail.com
Thu Jun 25 08:04:43 UTC 2015


2015-06-24 23:18 GMT+02:00 Arnout Vandecappelle <arnout at mind.be>:

On 06/24/15 16:23, Guillaume sétan wrote:

>> Hello,

>>

> >I try to use a Touchscreen (multitouch) with my target (Arm Little
endian -

>> Cortex - A9 ).

> >I tried to use EFL, directfb and fb but I haven't managed to run the
multitouch

>> on my target.


 >fb is just a framebuffer driver so doesn't have a relation with input
events.

>
 >directfb doesn't yet support multitouch AFAIK.

>
 >EFL should support multitouch. But I guess you have to configure it to
listen
>to the right input device.

    How I can do that ?


>
>>

>> Please can you explain me what packages are needed to use multitouch ?

>> Or have you ever used a touch screen on a target Arm ?


> You could try tslib (which converts multitouch to single touch so
probably not

>really what you want). Qt5 also has support for multitouch.

>
>>

>> Regards,

>>

>> Guillaumme

>>

>>

>> PS : I see frames on my target (arm ) when I touch my screen with
application mtdev.


 >What do you mean with 'frames'?


When I try the application mtdev, I see that :

 # ./mtdev-test /dev/input/event1
 supported mt events:
ABS_MT_SLOT
ABS_MT_POSITION_X
ABS_MT_POSITION_Y
ABS_MT_TRACKING_ID
014e29b54bd1 00 3 0039 0

014e29b54bd1 00 3 0035 22640
014e29b54bd1 00 3 0036 9019
014e29b54bd1 00 1 014a 1
014e29b54bd1 00 3 0000 22640
014e29b54bd1 00 3 0001 9019
014e29b54bd1 00 0 0000 0
014e29b54c5a 00 3 0035 22641
014e29b54c5a 00 3 0000 22641
014e29b54c5a 00 0 0000 0
014e29b54c60 00 3 0035 22642
014e29b54c60 00 3 0036 9020
014e29b54c60 00 3 0000 22642
014e29b54c60 00 3 0001 9020
014e29b54c60 00 0 0000 0
014e29b54c7f 00 3 0039 -1
014e29b54c7f 00 1 014a 0
014e29b54c7f 00 0 0000 0


Regards,


Guillaume
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