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e18fcbba5a
Now that device_api attribute is unmodified at runtime, as well as all the other attributes, it is possible to switch all device driver instance to be constant. A coccinelle rule is used for this: @r_const_dev_1 disable optional_qualifier @ @@ -struct device * +const struct device * @r_const_dev_2 disable optional_qualifier @ @@ -struct device * const +const struct device * Fixes #27399 Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com> |
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| src | ||
| CMakeLists.txt | ||
| Kconfig | ||
| prj.conf | ||
| 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