zephyr/samples/drivers/display
Keith Packard f12853004e samples/drivers/display: Eliminate control flow in macro
Remove RETURN_FROM_MAIN macro which performed control flow, violating
compliance tests. Replace with explicit use of posix_exit_main or return as
appropriate.

Signed-off-by: Keith Packard <keithp@keithp.com>
2023-04-14 07:49:41 +09:00
..
boards samples: drivers: display: add support for RT595 EVK 2023-03-04 09:19:26 +01:00
src samples/drivers/display: Eliminate control flow in macro 2023-04-14 07:49:41 +09:00
CMakeLists.txt
dummy_dc.overlay samples: Remove label property from devicetree overlays 2022-08-01 17:59:32 +02:00
prj.conf
README.rst
sample.yaml samples: drivers: display: introduce B-LCD40-DSI1 2023-04-06 11:51:06 +02:00

.. _display-sample:

Display Sample
##############

Overview
********

This sample will draw some basic rectangles onto the display.
The rectangle colors and positions are chosen so that you can check the
orientation of the LCD and correct RGB bit order. The rectangles are drawn
in clockwise order, from top left corner: red, green, blue, grey. The shade of
grey changes from black through to white. If the grey looks too green or red
at any point or the order of the corners is not as described above then the LCD
may be endian swapped.

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

As this is a generic sample it should work with any display supported by Zephyr.

Below is an example on how to build for a :ref:`nrf52840dk_nrf52840` board with a
:ref:`adafruit_2_8_tft_touch_v2`.

.. zephyr-app-commands::
   :zephyr-app: samples/drivers/display
   :board: nrf52840dk_nrf52840
   :goals: build
   :shield: adafruit_2_8_tft_touch_v2
   :compact:

For testing purpose without the need of any hardware, the :ref:`native_posix`
board is also supported and can be built as follows;

.. zephyr-app-commands::
   :zephyr-app: samples/drivers/display
   :board: native_posix
   :goals: build
   :compact:

List of Arduino-based display shields
*************************************

- :ref:`adafruit_2_8_tft_touch_v2`
- :ref:`ssd1306_128_shield`
- :ref:`st7789v_generic`
- :ref:`waveshare_e_paper_raw_panel_shield`