1.. zephyr:code-sample:: pressure_polling
2   :name: Barometric pressure and temperature sensor polling example
3   :relevant-api: sensor_interface
4
5   Get barometric pressure and temperature data from a sensor.
6
7Overview
8********
9
10This sample application periodically reads the sensor
11temperature and pressure, displaying the
12values on the console along with a timestamp since startup.
13It also displays the estimated altitude if floating point is supported
14and the sensor provides altitude data.
15
16Wiring
17*******
18
19This sample uses an external breakout for the sensor.  A devicetree
20overlay must be provided to identify the I2C/SPI used to control the sensor.
21
22Building and Running
23********************
24
25This sample supports pressure sensor devices. Device needs
26to be aliased as ``pressure-sensor``. For example:
27
28.. code-block:: devicetree
29
30	/ {
31		aliases {
32			pressure-sensor = &icp201xx;
33		};
34	};
35
36Make sure the aliases are in devicetree, then build and run with:
37
38.. zephyr-app-commands::
39   :zephyr-app: samples/sensor/pressure_polling
40   :board: nrf52dk/nrf52832
41   :goals: build flash
42
43Sample Output
44=============
45
46.. code-block:: console
47
48## Default configuration
49
50   Found device "icp101xx@63", getting sensor data
51   Starting pressure and altitude polling sample.
52   temp 25.49 Cel, pressure 96.271438 kPa, altitude 447.208465 m
53   temp 25.50 Cel, pressure 96.271331 kPa, altitude 447.234161 m
54   temp 25.49 Cel, pressure 96.266685 kPa, altitude 447.636077 m
55   temp 25.50 Cel, pressure 96.267951 kPa, altitude 447.537078 m
56   temp 25.51 Cel, pressure 96.268577 kPa, altitude 447.488281 m
57   temp 25.50 Cel, pressure 96.269340 kPa, altitude 447.414978 m
58   temp 25.50 Cel, pressure 96.268562 kPa, altitude 447.473663 m
59   temp 25.50 Cel, pressure 96.267341 kPa, altitude 447.596496 m
60
61   <repeats endlessly>
62