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zephyr/samples/sensor/bme280
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Marc Herbert 2cd51a33ce samples: make find_package(Zephyr...) REQUIRED 
This provides a better error message when building with CMake and
forgetting ZEPHYR_BASE or not registering Zephyr in the CMake package
registry. See parent commit for more details (split from parent for
better readability).

Signed-off-by: Marc Herbert <marc.herbert@intel.com>
 		2020-05-29 10:47:25 +02:00
..
boards samples: bme280: nrf52840 DK: set LSB in i2c addr 2020-04-14 10:38:10 -05:00
src devicetree: remove DT_HAS_NODE_STATUS_OKAY 2020-05-13 18:24:42 +02:00
CMakeLists.txt samples: make find_package(Zephyr...) REQUIRED 2020-05-29 10:47:25 +02:00
Kconfig samples: bme280: enable the appropriate bus by default 2020-04-14 10:38:10 -05:00
README.rst
…
prj.conf samples: bme280: enable the appropriate bus by default 2020-04-14 10:38:10 -05:00
sample.yaml
…

README.rst 

.. _bme280:

BME280 Humidity and Pressure Sensor
###################################

Overview
********

This sample application periodically reads temperature, pressure and humidity data from
the first available device that implements SENSOR_CHAN_AMBIENT_TEMP, SENSOR_CHAN_PRESS,
and SENSOR_CHAN_HUMIDITY. This sample checks the sensor in polling mode (without
interrupt trigger).

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

This sample application uses an BME280 sensor connected to a board via I2C.
Connect the sensor pins according to the connection diagram given in the `bme280 datasheet`_
at page 38.


.. zephyr-app-commands::
   :zephyr-app: samples/sensor/bme280
   :board: nrf52840dk_nrf52840
   :goals: flash
   :compact:

Sample Output
=============
To check output of this sample , any serial console program can be used.
This example uses ``picocom`` on the serial port ``/dev/ttyACM0``:

.. code-block:: console

        $ sudo picocom -D /dev/ttyUSB0

.. code-block:: console

        temp: 27.950000; press: 100.571027; humidity: 61.014648
        temp: 27.940000; press: 100.570269; humidity: 61.012695
        temp: 27.950000; press: 100.570695; humidity: 61.002929

.. _bme280 datasheet: https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME280-DS002.pdf