Article: NuttX RTOS for PinePhone: Feature Phone UI in LVGL, Zig and WebAssembly

[lupyuen]

I assume there is an event thread running for LVGL somewhere

Actually there isn't an Event Thread for LVGL :-)

If you remember our WebAssembly Article, our LVGL App calls LVGL periodically to execute Background Tasks (lv_timer_handler).

For PinePhone, lv_timer_handler is called by the Main Function of lvgldemo:

https://github.com/apache/nuttx-apps/blo...#L240-L249

lv_timer_handler will trigger a callback to read a Touch Sample:

https://lupyuen.codeberg.page/articles/t...our-driver

So no worries about clashing threads! LVGL looks really simplistic because it's meant to run on Bare Metal Hardware without threading. Which makes things easier for us :-)