how to make LVGL work in Zephyr?

[glin00]

Description:
I am trying to enable LVGL inside Zephyr. After I add "CONFIG_LVGL=y", I try to call lv_init() within main() function but it can not work. I have build the firmware without Zephyr OS with LVGL and LVGL is working correctly. So, how to make LVGL work in Zephyr? Do I need to copy the whole LVGL source directory(see attached) into /src which is the way I did without Zephyr OS?

Hardware: ST MCU STM32L496AGI6P, OLED with SPI interface
Zephyr Ver: Zephyr OS 2.7.0-rc2
LVGL:v7.6.1
OS: Linux Ubuntu

Please advise me how to fix this problem. Thank You!

[glin00]

In order to debug in more detail, I have to setup a debugger in Linux. Does anybody know which debugger work the best using ST-LINK/V2?

[pdgendt]

Did you take a look at the sample samples/subsys/display/lvgl?