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Several reviewers agreed that DT_HAS_NODE_STATUS_OKAY(...) was an undesirable API for the following reasons: - it's inconsistent with the rest of the DT_NODE_HAS_FOO names - DT_NODE_HAS_FOO_BAR_BAZ(node) was agreed upon as a shorthand for macros which are equivalent to DT_NODE_HAS_FOO(node) && DT_NODE_HAS_BAR(node) && - DT_NODE_HAS_BAZ(node), and DT_HAS_NODE_STATUS_OKAY is an odd duck - DT_NODE_HAS_STATUS(..., okay) was viewed as more readable anyway - it is seen as a somewhat aesthetically challenged name Replace all users with DT_NODE_HAS_STATUS(..., okay), which is semantically equivalent. This is mostly done with sed, but a few remaining cases were done by hand, along with whitespace, docs, and comment changes. These special cases include the Nordic SOC static assert files. Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no> |
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| README.rst | ||
| sample.yaml | ||
.. _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