zephyr/samples/boards/bbc_microbit/display
Andy Ross f288d1e4a7 tests: samples: Apps shouldn't set tick rate
Tick rate is becoming a platform tunable in the tickless world.  Some
apps were setting it due to requirements of drivers or subsystems (or
sometimes for reasons that don't make much sense), but the dependency
goes the other way around now: board/soc/arch level code is
responsible for setting tick rates that work with their devices.

A few tests still use hard-configured tick rates, as they have
baked-in assumptions (like e.g. "a tick will be longer than a
millisecond") that need to be addressed first.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2019-07-02 22:52:29 -04:00
..
src cleanup: include/: move misc/printk.h to sys/printk.h 2019-06-27 22:55:49 -04:00
CMakeLists.txt license: cleanup: add SPDX Apache-2.0 license identifier 2019-04-07 08:45:22 -04:00
prj.conf tests: samples: Apps shouldn't set tick rate 2019-07-02 22:52:29 -04:00
README.rst
sample.yaml samples: add test identifier 2019-03-29 17:44:11 -04:00

.. _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:

.. zephyr-app-commands::
   :zephyr-app: samples/boards/microbit/display
   :board: bbc_microbit
   :goals: build
   :compact:

Sample Output
=============

The sample app displays a countdown of the characters 9-0, iterates
through all pixels one-by-one, displays a smiley face, some animations,
and finally the text "Hello Zephyr!" by scrolling.