2017-05-31 13:05:43 +08:00
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.. _bmm150:
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2017-10-18 00:46:49 +08:00
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BMM150 Geomagnetic Sensor
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2017-05-31 13:05:43 +08:00
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#########################
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Overview
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********
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This sample application periodically reads magnetometer (X, Y, Z) data from
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the first available device that implements SENSOR_CHAN_MAGN_* (predefined array
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of device names). This sample checks the sensor in polling mode (without
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interrupt trigger).
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Building and Running
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********************
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This sample application uses an BMM150 sensor connected to an Arduino 101 board via I2C.
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Sensor has multiple pins so you need to connect according to connection diagram given in
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`bmm150 datasheet`_ at page 41.
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There are two processor cores (x86 and ARC) on the Arduino 101. You will need to
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flash both this sample's code on the ARC core (using the ``arduino101_ss`` board target),
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and stub code on the x86 core (using the ``arduino_101`` board target), as shown below.
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.. code-block:: console
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2017-11-12 17:13:52 +08:00
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.. zephyr-app-commands::
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:zephyr-app: samples/sensors/bmm150
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:board: arduino_101_sss
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:goals: flash
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:compact:
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.. zephyr-app-commands::
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:zephyr-app: tests/booting/stub
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:board: arduino_101
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:goals: flash
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:compact:
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2017-05-31 13:05:43 +08:00
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Sample Output
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=============
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To check output of this sample , any serial console program can be used.
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Here I am using picocom program to open output. Check which tty device it is.
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In my case it is ttyUSB0
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.. code-block:: console
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$ sudo picocom -D /dev/ttyUSB0
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.. code-block:: console
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( x y z ) = ( -0.390625 0.087500 -0.390625 )
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( x y z ) = ( -0.275000 0.115625 -0.275000 )
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( x y z ) = ( -0.281250 0.125000 -0.281250 )
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( x y z ) = ( -0.287500 0.134375 -0.287500 )
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.. _bmm150 datasheet: http://www.mouser.com/ds/2/783/BST-BMM150-DS001-01-786480.pdf
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