OrgZephyr/zephyr
OrgZephyr
/
zephyr
mirror of https://github.com/zephyrproject-rtos/zephyr.git
1
0
Fork 0
Code Issues Releases Wiki Activity
zephyr/samples/sensor/bmi270
History
Gerard Marull-Paretas 79e6b0e0f6 includes: prefer <zephyr/kernel.h> over <zephyr/zephyr.h> 
As of today <zephyr/zephyr.h> is 100% equivalent to <zephyr/kernel.h>.
This patch proposes to then include <zephyr/kernel.h> instead of
<zephyr/zephyr.h> since it is more clear that you are including the
Kernel APIs and (probably) nothing else. <zephyr/zephyr.h> sounds like a
catch-all header that may be confusing. Most applications need to
include a bunch of other things to compile, e.g. driver headers or
subsystem headers like BT, logging, etc.

The idea of a catch-all header in Zephyr is probably not feasible
anyway. Reason is that Zephyr is not a library, like it could be for
example `libpython`. Zephyr provides many utilities nowadays: a kernel,
drivers, subsystems, etc and things will likely grow. A catch-all header
would be massive, difficult to keep up-to-date. It is also likely that
an application will only build a small subset. Note that subsystem-level
headers may use a catch-all approach to make things easier, though.

NOTE: This patch is **NOT** removing the header, just removing its usage
in-tree. I'd advocate for its deprecation (add a #warning on it), but I
understand many people will have concerns.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
 		2022-09-05 16:31:47 +02:00
..
src includes: prefer <zephyr/kernel.h> over <zephyr/zephyr.h> 2022-09-05 16:31:47 +02:00
CMakeLists.txt
…
README.rst
…
app.overlay samples: sensors: Remove label property from devicetree overlays 2022-07-19 08:23:35 -05:00
prj.conf sensors: Remove unnecessary Kconfig setting of sensors 2022-07-25 15:18:56 +02:00
sample.yaml
…

README.rst 

.. _bmi270:

BMI270: 6 axis inertial measurement unit
########################################

Description
***********

This sample application configures the accelerometer and gyroscope to
measure data at 100Hz. The result is written to the console.

References
**********

 - BMI270: https://www.bosch-sensortec.com/products/motion-sensors/imus/bmi270.html

Wiring
*******

This sample uses the BMI270 sensor controlled using the I2C interface.
Connect Supply: **VDD**, **VDDIO**, **GND** and Interface: **SDA**, **SCL**.
The supply voltage can be in the 1.8V to 3.6V range.
Depending on the baseboard used, the **SDA** and **SCL** lines require Pull-Up
resistors.

Building and Running
********************

This project outputs sensor data to the console. It requires a BMI270
sensor. It should work with any platform featuring a I2C peripheral interface.
It does not work on QEMU.
In this example below the :ref:`nrf52840dk_nrf52840` board is used.


.. zephyr-app-commands::
   :zephyr-app: samples/sensor/bmi270
   :board: nrf52840dk_nrf52840
   :goals: build flash

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

.. code-block:: console

   Device 0x200014cc name is BMI270
   AX: 0.268150; AY: 0.076614; AZ: 9.730035; GX: 0.001065; GY: -0.005326; GZ: -0.004261;
   AX: 0.229843; AY: 0.076614; AZ: 9.806650; GX: 0.000532; GY: -0.005592; GZ: -0.002929;
   AX: 0.229843; AY: 0.076614; AZ: 9.806650; GX: 0.000266; GY: -0.006125; GZ: -0.002663;
   AX: 0.306457; AY: 0.038307; AZ: 9.768342; GX: 0.001331; GY: -0.005326; GZ: -0.004793;

   <repeats endlessly>