[Buildroot] Qt5 and touchscreen calibration

[David Picard]

Hello,

The 'rotate' trick did it.

Thanks,
David.

Le 30/10/2015 21:12, Peter Seiderer a écrit :
> Hello David, Arnout,
>
> On Fri, 30 Oct 2015 18:23:02 +0100, Arnout Vandecappelle <arnout at mind.be> wrote:
>
>> On 30-10-15 17:55, David Picard wrote:
>>> Hello,
>>>
>>>
>>> I got my touchscreen working perfectly with ts_test. Many thanks to Peter
>>> Seiderer !
>>>
>>> But the thing is that my Qt5 app does not grab the touchscreen properly : x and
>>> y axis are switched. I did enable the tslib option under Qt5 in menuconfig. Is
>
> The following
>
> 	$ QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS='rotate=270' /usr/lib/qt/examples/touch/fingerpaint/fingerpaint -platform
> linuxfb:fb=/dev/fb1
>
> worked for me to get x/y right, see [1] for Qt5 parameters.
>
> Regards,
> Peter
>
> [1] http://doc.qt.io/qt-5/embedded-linux.html
>
>>> there some magic command line option to pass to the application ? I tried this :
>>>
>>> $ myapp -platform linuxfb:fb=/dev/fb1 -plugin tslib
>>> ts_open() failed (No such file or directory)
>>
>>   Did you export QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS=/dev/input/event0 (but
>> replace with the correct device of course)?
>>
>>   Or hang on, for tslib it's TSLIB_TSDEVICE that you have to set.
>>
>>
>>   Regards,
>>   Arnout
>>
>>>
>>>>>> the app shows up, but TS still messed up.
>>>
>>> My config :
>>> - Raspberry Pi B+ and Adafruit 2.8" PiTFT w/ cap touch.
>>> - Buildroot 2015.08.1
>>> - Qt5 w/ tslib support enabled (BR2_PACKAGE_QT5BASE_TSLIB=y).
>>>
>>>
>>> Regards,
>>> David.
>>>
>>>
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>>>
>>
>>
>