LVGL demos

Browse source code on GitHub

Overview

A sample showcasing upstream LVGL demos.

Music

The music player demo shows what kind of modern, smartphone-like user interfaces can be created on LVGL.

Benchmark

The benchmark demo tests the performance in various cases. For example rectangle, border, shadow, text, image blending, image transformation, blending modes, etc.

Stress

A stress test for LVGL. It contains a lot of object creation, deletion, animations, styles usage, and so on. It can be used if there is any memory corruption during heavy usage or any memory leaks.

Widgets

Shows how the widgets look like out of the box using the built-in material theme.

Keypad and Encoder

Shows how to control widget with a keypad and hardware encoder.

Render

Collection of multiple rendering tests.

More details can be found in LVGL demos Readme [1].

Requirements

  • A board with display, ideally with 480x272 resolution or higher.

  • A pointer input device: touchpad, mouse, or touch screen capable display, compatible with zephyr,lvgl-pointer-input.

Note that other input devices types are not demonstrated in these demos, namely keyboards, keypads (zephyr,lvgl-keypad-input), rotary encoders (zephyr,lvgl-encoder-input) and hardware buttons (zephyr,lvgl-button-input).

Building and Running

Example building for MIMXRT1060-EVK:

# From the root of the zephyr repository
west build -b mimxrt1060_evk samples/modules/lvgl/demos
west flash

These demos can be built for simulated display environment as follows:

west build -b native_sim samples/modules/lvgl/demos -- -DCONFIG_LV_Z_DEMO_MUSIC=y
west build -t run

west build -b native_sim samples/modules/lvgl/demos -- -DCONFIG_LV_Z_DEMO_BENCHMARK=y
west build -t run

west build -b native_sim samples/modules/lvgl/demos -- -DCONFIG_LV_Z_DEMO_STRESS=y
west build -t run

west build -b native_sim samples/modules/lvgl/demos -- -DCONFIG_LV_Z_DEMO_WIDGETS=y
west build -t run

west build -b native_sim samples/modules/lvgl/demos -- -DCONFIG_LV_Z_DEMO_KEYPAD_AND_ENCODER=y
west build -t run

west build -b native_sim samples/modules/lvgl/demos -- -DCONFIG_LV_Z_DEMO_RENDER=y
west build -t run

Alternatively, if building from a 64-bit host machine, the previous target board argument may also be replaced by native_sim/native/64.

References

See also

Display