zephyr

History

Fabian Blatz c7f8033f2b modules: lvgl: simplify sys_heap memory size configs Changes the Kconfig symbols for the sys_heap based memory management option and removes the notion of `BLOCKS` with a more concise single `LV_Z_MEM_POOL_SIZE` option. Also adds `LV_MEM_CUSTOM` to the lv_conf.h, since in any option the memory management is considered to be custom. Signed-off-by: Fabian Blatz <fabianblatz@gmail.com>		2023-09-27 09:54:08 +02:00
..
boards	samples: subsys: display: lvgl: Add lvgl-encoder-input device	2023-09-13 11:35:04 +02:00
src	samples: subsys: display: lvgl: Add lvgl-encoder-input device	2023-09-13 11:35:04 +02:00
CMakeLists.txt	…
README.rst	doc: Migrate subsys/ code samples to new Sphinx extension	2023-09-21 09:28:31 +02:00
prj.conf	modules: lvgl: simplify sys_heap memory size configs	2023-09-27 09:54:08 +02:00
sample.yaml	samples: subsys: display: Add RK055HDMIPI4M shield testcase to LVGL	2023-09-13 16:36:10 +02:00

README.rst

.. zephyr:code-sample:: lvgl
   :name: LVGL basic sample
   :relevant-api: display_interface

   Display "Hello World" and a dynamic counter using LVGL.

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:

- :ref:`adafruit_2_8_tft_touch_v2` and :ref:`nrf52840dk_nrf52840`
- :ref:`buydisplay_2_8_tft_touch_arduino` and :ref:`nrf52840dk_nrf52840`
- :ref:`ssd1306_128_shield` and :ref:`frdm_k64f`

or a board with an integrated display:

- :ref:`esp_wrover_kit`

or a simulated display environment in a native Posix application:

- :ref:`native_posix`
- `SDL2`_

or

- :ref:`mimxrt1050_evk`
- `RK043FN02H-CT`_

or

- :ref:`mimxrt1060_evk`
- `RK043FN02H-CT`_

Building and Running
********************

Example building for :ref:`nrf52840dk_nrf52840`:

.. zephyr-app-commands::
   :zephyr-app: samples/subsys/display/lvgl
   :board: nrf52840dk_nrf52840
   :shield: adafruit_2_8_tft_touch_v2
   :goals: build flash

Example building for :ref:`native_posix`:

.. zephyr-app-commands::
   :zephyr-app: samples/subsys/display/lvgl
   :board: native_posix
   :goals: build run

Alternatively, if building from a 64-bit host machine, the previous target
board argument may also be replaced by ``native_posix_64``.

References
**********

.. target-notes::

.. _LVGL Web Page: https://lvgl.io/
.. _SDL2: https://www.libsdl.org
.. _RK043FN02H-CT: https://www.nxp.com/products/processors-and-microcontrollers/arm-based-processors-and-mcus/i.mx-applications-processors/i.mx-rt-series/4.3-lcd-panel:RK043FN02H-CT