zephyr

History

Anas Nashif 3ae52624ff license: cleanup: add SPDX Apache-2.0 license identifier Update the files which contain no license information with the 'Apache-2.0' SPDX license identifier. Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of Zephyr, which is Apache version 2. Signed-off-by: Anas Nashif <anas.nashif@intel.com>		2019-04-07 08:45:22 -04:00
..
boards	boards: mimxrt10{50,60}_evk: Set lvgl defaults in board defconfigs	2019-03-13 06:02:42 -05:00
src	all: Add 'U' suffix when using unsigned variables	2019-03-28 17:15:58 -05:00
CMakeLists.txt	license: cleanup: add SPDX Apache-2.0 license identifier	2019-04-07 08:45:22 -04:00
README.rst	doc: prepare for improving doc API linking	2019-03-15 05:47:19 +01:00
nrf52840_pca10056.overlay	…
prj.conf	…
reel_board.overlay	…
sample.yaml	samples: add test identifier	2019-03-29 17:44:11 -04:00

README.rst

.. _lvgl-sample:

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.

Requirements
************

- `nRF52840 Preview development kit`_
- `Adafruit 2.2 inch TFT Display`_

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`_

Wiring
******

The nrf52840 Preview development kit should be connected as follows to the
Adafruit TFT display.

+-------------+----------------+
| | nrf52840  | | Adafruit TFT |
| | Pin       | | Pin          |
+=============+================+
| P0.27       | SCK            |
+-------------+----------------+
| P0.31       | D/C            |
+-------------+----------------+
| P0.30       | RST            |
+-------------+----------------+
| P0.26       | MOSI           |
+-------------+----------------+
| P0.29       | MISO           |
+-------------+----------------+
| P0.4        | NSS            |
+-------------+----------------+

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

Build this sample using the following commands:

.. zephyr-app-commands::
   :zephyr-app: samples/gui/lvgl
   :board: nrf52840_pca10056
   :goals: build
   :compact:

See :ref:`nrf52840_pca10056` on how to flash the build.

or

.. zephyr-app-commands::
   :zephyr-app: samples/gui/lvgl
   :board: native_posix
   :goals: build
   :compact:

References
**********

.. target-notes::

.. _LittlevGL Web Page: https://littlevgl.com/
.. _Adafruit 2.2 inch TFT Display: https://www.adafruit.com/product/1480
.. _nRF52840 Preview development kit: http://www.nordicsemi.com/eng/Products/nRF52840-Preview-DK
.. _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