zephyr

History

Anas Nashif 33592e8aa8 cmake: remove IS_TEST handling Depending on a path inside the Zephyr tree to determine if we are a test does not scale. Also some samples were marked as TEST while they are not, just to get some options defined for tests. Idenitfying a test will be addressed in another patch introducing CONFIG_TEST. Signed-off-by: Anas Nashif <anas.nashif@intel.com>		2018-01-08 10:03:57 -05:00
..
src	kbuild: Removed KBuild	2017-11-08 20:00:22 -05:00
CMakeLists.txt	cmake: remove IS_TEST handling	2018-01-08 10:03:57 -05:00
README.rst	samples: boards: Convert doc to CMake	2017-11-12 21:13:23 -05:00
prj.conf	…
sample.yaml	samples: remove more build_only tags	2017-12-28 20:24:29 -05:00

README.rst

.. _microbit_sound:

BBC micro:bit sound
###################

Overview
********

This is simple example demonstrating how to use a piezo buzzer connected
to port P0 on the edge connector of the BBC micro:bit board. Note that
the buzzer is not part of the main micro:bit board, rather it it needs
to be separately acquired and connected. A well working example is the
MI:Power board that has a piezo buzzer in addition to a coin-cell
battery. Resellers of this board can be fairly easily found using online
search.

Building
********

The sample can be built as follows:

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

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

This sample outputs sounds through a connected piezo buzzer based on
button presses of the two main buttons. For each press the current
output frequency will be printed on the 5x5 LED display.