zephyr

History

Torsten Rasmussen 407b49b35c cmake: use find_package to locate Zephyr Using find_package to locate Zephyr. Old behavior was to use $ENV{ZEPHYR_BASE} for inclusion of boiler plate code. Whenever an automatic run of CMake happend by the build system / IDE then it was required that ZEPHYR_BASE was defined. Using ZEPHYR_BASE only to locate the Zephyr package allows CMake to cache the base variable and thus allowing subsequent invocation even if ZEPHYR_BASE is not set in the environment. It also removes the risk of strange build results if a user switchs between different Zephyr based project folders and forgetting to reset ZEPHYR_BASE before running ninja / make. Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>		2020-03-27 16:23:46 +01:00
..
src	samples: micro:bit: Convert line_follower_robot sample to new GPIO API	2020-02-05 12:00:36 +01:00
CMakeLists.txt	cmake: use find_package to locate Zephyr	2020-03-27 16:23:46 +01:00
README.rst	doc: fix broken file and zephyr-app refs	2019-10-08 15:42:32 -05:00
prj.conf	…
sample.yaml	…

README.rst

.. _microbit_line_follower_robot:

BBC micro:bit line-follower robot
#################################

Overview
********
This sample show makers and robotics engineers how to use a Zephyr
OS application to control a stand-alone line-following DFRobot Maqueen
robot chassis containing a BBC micro:bit board.

Building and running
********************

To build and run this sample you'll need a `DFRobot Maqueen robot
chassis (ROB0148) <https://www.dfrobot.com/product-1783.html>`_
with a BBC micro:bit board. Use black tape to create a line track
for the robot to follow. Build and flash the program to the BBC
micro:bit board (described below), turn on the robot,
and put it on the black line track.

Build this sample project using these commands:

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

Then flash the program to the micro:bit board.

Sample Output
*************

The sample program controls the robot to follow a line track and does
not write to the console. You can watch this `robot video`_
to see it in action.

.. _robot video:
   https://youtu.be/tIvoHQjo8a4