Stumbled through getting LVGL working.  Struggled getting the screen rotation to work properly in 9.1 of the Arduino library.  Eventually gave up and downgraded to 8.3, which worked with the example code.  Found an issue/pr that fixed the rotation bug but wasn't yet in a release.  Over writing the arduino lvgl library src folder with the current version from github got 9.1 working properly.

Testing EEZ Studio for generating the LVGL code, single screen and label seemed to work.  Got the label to update based on button press similar to prior demo code.