This is the documentation for the latest (master) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

LittlevGL Basic Sample

Overview

This sample application displays “Hello World” in the center of the screen and a counter at the bottom which increments every second. If an input driver is supported, such as the touch panel controller on mimxrt10{50,60,64}_evk boards, “Hello World” is enclosed in a button that changes to the toggled state when touched.

Requirements

Display shield and a board which provides a configuration for Arduino connectors, for example:

or a simulated display environment in a native Posix application:

or

or

Building and Running

Note

When deferred logging is enabled you will likely need to increase CONFIG_LOG_STRDUP_BUF_COUNT and/or CONFIG_LOG_STRDUP_MAX_STRING to make sure no messages are lost or truncated.

Example building for nRF52840 DK:

# From the root of the zephyr repository
west build -b nrf52840dk_nrf52840 samples/gui/lvgl -- -DSHIELD=adafruit_2_8_tft_touch_v2
west flash

Example building for Native POSIX execution (native_posix):

# From the root of the zephyr repository
west build -b native_posix samples/gui/lvgl
west flash