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Prepend the text 'cmake_minimum_required(VERSION 3.8.2)' into the application and test build scripts. Modern versions of CMake will spam users with a deprecation warning when the toplevel CMakeLists.txt does not specify a CMake version. This is documented in bug #8355. To resolve this we include a cmake_minimum_required() line into the toplevel build scripts. Additionally, cmake_minimum_required is invoked from within boilerplate.cmake. The highest version will be enforced. This patch allows us to afterwards change CMake policy CMP000 from OLD to NEW which in turn finally rids us of the verbose warning. The extra boilerplate is considered more acceptable than the verbosity of the CMP0000 policy. Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no> |
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| src | ||
| CMakeLists.txt | ||
| prj.conf | ||
| README.rst | ||
| sample.yaml | ||
.. _bmm150:
BMM150 Geomagnetic Sensor
#########################
Overview
********
This sample application periodically reads magnetometer (X, Y, Z) data from
the first available device that implements SENSOR_CHAN_MAGN_* (predefined array
of device names). This sample checks the sensor in polling mode (without
interrupt trigger).
Building and Running
********************
This sample application uses an BMM150 sensor connected to an Arduino 101 board via I2C.
Sensor has multiple pins so you need to connect according to connection diagram given in
`bmm150 datasheet`_ at page 41.
There are two processor cores (x86 and ARC) on the Arduino 101. You will need to
flash both this sample's code on the ARC core (using the ``arduino101_ss`` board target),
and stub code on the x86 core (using the ``arduino_101`` board target), as shown below.
.. code-block:: console
.. zephyr-app-commands::
:zephyr-app: samples/sensors/bmm150
:board: arduino_101_sss
:goals: flash
:compact:
.. zephyr-app-commands::
:zephyr-app: tests/booting/stub
:board: arduino_101
:goals: flash
:compact:
Sample Output
=============
To check output of this sample , any serial console program can be used.
Here I am using picocom program to open output. Check which tty device it is.
In my case it is ttyUSB0
.. code-block:: console
$ sudo picocom -D /dev/ttyUSB0
.. code-block:: console
( x y z ) = ( -0.390625 0.087500 -0.390625 )
( x y z ) = ( -0.275000 0.115625 -0.275000 )
( x y z ) = ( -0.281250 0.125000 -0.281250 )
( x y z ) = ( -0.287500 0.134375 -0.287500 )
.. _bmm150 datasheet: http://www.mouser.com/ds/2/783/BST-BMM150-DS001-01-786480.pdf