zephyr

History

Sebastian Bøe 49e7ca957e cmake: set IS_TEST in the samples that were including Makefile.test For an unknown reason, various samples in KBuild were including Makefile.test, this had some desired benefits, one of which is that the popular BOOT_BANNER appears. The CMake-equivalent of including Makefile.test is setting the flag IS_TEST. This commit reverts the behaviour of the samples back to how it was pre-cmake. Signed-off-by: Sebastian Boe <sebastian.boe@nordicsemi.no>		2017-11-16 08:26:25 -05:00
..
src	kbuild: Removed KBuild	2017-11-08 20:00:22 -05:00
CMakeLists.txt	cmake: set IS_TEST in the samples that were including Makefile.test	2017-11-16 08:26:25 -05:00
README.rst	samples: boards: Convert doc to CMake	2017-11-12 21:13:23 -05:00
prj.conf	…
sample.yaml	tests: samples: fix yaml syntax	2017-10-15 08:15:00 -04:00

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.