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zephyr/samples/boards/bbc_microbit/display/README.rst

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drivers: Add support for BBC micro:bit LED display Adds a simple driver to access the 5x5 LED display found on BBC micro:bit boards. The display is so limited that no effort is done to try to integrate with the existing console (which would likely make the display unusable). Instead, dedicated mb_display_* APIs are added that are specific to this display. References: https://www.microbit.co.uk/device/screen https://lancaster-university.github.io/microbit-docs/ubit/display/ Jira: ZEP-1990 Change-Id: I431b5b358b5f07592a60d3aed87eaab6ac20ce25 Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-03 01:54:23 +08:00
.. _microbit_display:
BBC micro:bit display
#####################
Overview
********
A simple example that demonstrates how to use the 5x5 LED matrix display
on the BBC micro:bit board.
Building
********
This project outputs various things on the BBC micro:bit display. It can
be built as follows:
samples: boards: Convert doc to CMake Convert doc of samples/boards to CMake. Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
2017-11-12 17:13:07 +08:00
.. zephyr-app-commands::
:zephyr-app: samples/boards/microbit/display
:board: bbc_microbit
:goals: build
:compact:
drivers: Add support for BBC micro:bit LED display Adds a simple driver to access the 5x5 LED display found on BBC micro:bit boards. The display is so limited that no effort is done to try to integrate with the existing console (which would likely make the display unusable). Instead, dedicated mb_display_* APIs are added that are specific to this display. References: https://www.microbit.co.uk/device/screen https://lancaster-university.github.io/microbit-docs/ubit/display/ Jira: ZEP-1990 Change-Id: I431b5b358b5f07592a60d3aed87eaab6ac20ce25 Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-03 01:54:23 +08:00
Sample Output
=============
The sample app displays a countdown of the characters 9-0, iterates
drivers: display: mb_display: Unify image and string APIs Both the string and image rendering may want to take advantage of scrolling and sequential display capabilities. Consolidate the APIs so that there's a single one for images (mb_display_image) and a single one for strings (mb_display_print). Both take a duration parameter for the per-frame duration as well as a mode parameter which specifies sequential vs scrolling behavior as well as an optional looping flag. Change-Id: Ia092d771e3f1b94afd494c7544dab988161c539e Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-05 23:36:36 +08:00
through all pixels one-by-one, displays a smiley face, some animations,
and finally the text "Hello Zephyr!" by scrolling.