This is based on the example found here: https://gist.github.com/clydebarrow/9d2cffd739cb844e9d6d5005fd29518d and created by https://gist.github.com/clydebarrow

The current LVGL dev code is here I believe https://github.com/clydebarrow/esphome/tree/75c5d5f19fe789053d47fa6874df0e03d5bf1015/esphome/components/lvgl

While this is still under active development it is best to reference a previous working commit like this:

external_components:
  - source:
      type: git
      url: https://github.com/clydebarrow/esphome
      ref: fd15094c0860df23d532881df36cfd16c7da1091 #previous commit - wont be needed in the future
    components: [ lvgl ]

LVGL Docs: https://deploy-preview-3678--esphome.netlify.app/components/lvgl#lvgl-main

LVGL tips and tricks: https://deploy-preview-3678--esphome.netlify.app/cookbook/lvgl

Another example is here: https://gist.github.com/clydebarrow/3a3d7d48ee72c333d094e80ac43b8054

The most complete example from Clyde Barrow that I found a little later is here: https://gist.github.com/clydebarrow/ef89e9a93bd44771483b9144ae9042a1

I am using a different LCD from his examples, the esp32-2424s012 ESP32C3 round 1.28" 240*240 IPS board with touchscreen

affiliate link to product: https://www.aliexpress.us/item/3256806114329043.html

Disclaimer: my examples are by no means the best or right way to do things - I am still in the early stages of learning LVGL and specifically the ESPHome syntax for LVGL component

Sunton display general info https://github.com/rzeldent/platformio-espressif32-sunton