LVGL allows you to control the widgets with keypad and/or encoder without touchpad. This demo shows how to handle buttons, drop-down lists, rollers, sliders, switches and text inputs without touchpad. Learn more about the touchpad-less usage of LVGL here.
lv_conf.h or equivalent places set LV_USE_DEMO_KEYPAD_AND_ENCODER 1lv_init() and initializing the drivers call lv_demo_keypad_encoder()