Gui Guider touch response

[pjanco]

Hi,
I am using board MIMXRT1060-EVK, SDK 2.9.1.
I used SDK example "evkmimxrt1060_littlevgl_guider" as base project.
I generate source code for application template "Printer demo" using Gui Guider tool.
Then I manually copy generated files from Guider tool to my project folder in MCUXpresso, then fix some compiler errors, and everything is running on board.

But, when I click to button on touchscreen, sometimes GUI not respond to my click and I have to click again. It happened like 1 attempt in 50.

By using breakpoint in function "DEMO_ReadTouch", I can see that touch controller is working perfectly. It read correct XY coordinates and correct touch event, but LVGL library simple ignore it and did not do action.

But it can be weirder!
I am able to reproduce this issue even in Simulator window inside Gui Guider. But it happened less often in compare to real EVK hardware.

I also have my own board that I am working on with 800x480 screen. Design of my board is based on EVK design. There the touch issue happened even more often then on EVK board.

[pjanco · Accepted solution]

Hi,

I figured it out!

It is so simple. There is a bug in provided application template design.

There are 4 big color buttons on main screen. In every of them, there is small image.

This image is not part of button. It is separate object. If I click on the small image, there is no action associated with it. I add same action to small image as the big one have and problem is solved!