72 lines
1.8 KiB
ReStructuredText
72 lines
1.8 KiB
ReStructuredText
.. _lvgl-sample:
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LittlevGL Basic Sample
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######################
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Overview
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********
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This sample application displays "Hello World" in the center of the screen
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and a counter at the bottom which increments every second. If an input driver
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is supported, such as the touch panel controller on mimxrt10{50,60,64}_evk
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boards, "Hello World" is enclosed in a button that changes to the toggled state
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when touched.
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Requirements
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************
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Display shield and a board which provides a configuration
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for Arduino connectors, for example:
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- :ref:`adafruit_2_8_tft_touch_v2` and :ref:`nrf52840dk_nrf52840`
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- :ref:`buydisplay_2_8_tft_touch_arduino` and :ref:`nrf52840dk_nrf52840`
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- :ref:`ssd1306_128_shield` and :ref:`frdm_k64f`
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or a simulated display environment in a native Posix application:
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- :ref:`native_posix`
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- `SDL2`_
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or
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- :ref:`mimxrt1050_evk`
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- `RK043FN02H-CT`_
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or
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- :ref:`mimxrt1060_evk`
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- `RK043FN02H-CT`_
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Building and Running
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********************
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.. note::
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When deferred logging is enabled you will likely need to increase
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:option:`CONFIG_LOG_STRDUP_BUF_COUNT` and/or
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:option:`CONFIG_LOG_STRDUP_MAX_STRING` to make sure no messages are lost or
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truncated.
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Example building for :ref:`nrf52840dk_nrf52840`:
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.. zephyr-app-commands::
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:zephyr-app: samples/gui/lvgl
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:board: nrf52840dk_nrf52840
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:shield: adafruit_2_8_tft_touch_v2
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:goals: build flash
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Example building for :ref:`native_posix`:
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.. zephyr-app-commands::
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:zephyr-app: samples/gui/lvgl
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:board: native_posix
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:goals: build flash
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References
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**********
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.. target-notes::
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.. _LittlevGL Web Page: https://littlevgl.com/
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.. _SDL2: https://www.libsdl.org
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.. _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
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