Display freezing problem on ESP32 / ILI9488 / FT6236

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1

I’m trying LVGL on a custom designed board with ESP32 WROVER B & ER-TFT035-6 touch
display. The display is getting frozen, its not changing label values (In Fig 1 Label should
change on BNTMATRIX Press) also screen stucks once its drawn, The Button matrix touch
gives response on terminal but not on Screen, I have set Like: if Password == 1111 , then
another screen should be open but its not. I tried demo benchmark code from lvgl That’s
also Not working Screen is freezed & Got 0 fps result. I have attached full issue report. Looking for help.

Display Issue Report.zip (2.8 MB)

2

Hi,

Please try this code: https://github.com/lvgl/lv_examples/blob/release/v7/src/lv_ex_widgets/lv_ex_slider/lv_ex_slider_1.c

Can you drag the slider? Or the screen is only redrawn once?

3

Hi
Problem was solved. It was due to dis_spi.h issue. Thanks for reply & support.

4

I tried running the example, but nothing appears on the screen.

5

Hi, sorry for bring up this thread.
I’m facing an issue with my ESP32 S2 WROOM1 from MakerFabs (display link)
Using some examples, like lv_example_observer_4, when i switch from two tabs, immediatly the display freeze.
I’ve other examples where something strange appears: lv_example_arc_1, lv_example_bar_4, lv_example_obj_2…
I’m using this config for the memsize : #define LV_MEM_SIZE (128U * 1024U)
And this one for the buffer : const unsigned int lvBufferSize = ((TFT_HOR_RES * TFT_VER_RES) / 10) * (LV_COLOR_DEPTH / 8);
Any suggestion?! :thinking:
Thanks in advance!