ca7c6be61e
Polls and reports pressure, temperature and altitude data Signed-off-by: Remi Buisson <remi.buisson@tdk.com>
61 lines
2.1 KiB
ReStructuredText
61 lines
2.1 KiB
ReStructuredText
.. zephyr:code-sample:: pressure_polling
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:name: Barometric pressure and temperature sensor polling example
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:relevant-api: sensor_interface
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Get barometric pressure and temperature data from a sensor.
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Overview
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********
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This sample application periodically reads the sensor
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temperature and pressure, displaying the
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values on the console along with a timestamp since startup.
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It also displays the estimated altitude if floating point is supported.
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Wiring
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*******
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This sample uses an external breakout for the sensor. A devicetree
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overlay must be provided to identify the I2C/SPI used to control the sensor.
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Building and Running
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********************
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This sample supports pressure sensor devices. Device needs
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to be aliased as ``pressure-sensor``. For example:
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.. code-block:: devicetree
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/ {
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aliases {
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pressure-sensor = &icp201xx;
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};
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};
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Make sure the aliases are in devicetree, then build and run with:
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.. zephyr-app-commands::
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:zephyr-app: samples/sensor/pressure_polling
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:board: nrf52dk/nrf52832
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:goals: build flash
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Sample Output
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=============
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.. code-block:: console
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## Default configuration
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Found device "icp101xx@63", getting sensor data
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[00:00:00.266,479] <inf> PRESSURE_POLLING: Starting pressure and altitude polling sample.
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[00:00:00.273,803] <inf> PRESSURE_POLLING: temp 25.49 Cel, pressure 96.271438 kPa, altitude 447.208465 m
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[00:00:00.280,914] <inf> PRESSURE_POLLING: temp 25.50 Cel, pressure 96.271331 kPa, altitude 447.234161 m
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[00:00:00.288,024] <inf> PRESSURE_POLLING: temp 25.49 Cel, pressure 96.266685 kPa, altitude 447.636077 m
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[00:00:00.295,135] <inf> PRESSURE_POLLING: temp 25.50 Cel, pressure 96.267951 kPa, altitude 447.537078 m
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[00:00:00.302,246] <inf> PRESSURE_POLLING: temp 25.51 Cel, pressure 96.268577 kPa, altitude 447.488281 m
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[00:00:00.309,356] <inf> PRESSURE_POLLING: temp 25.50 Cel, pressure 96.269340 kPa, altitude 447.414978 m
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[00:00:00.316,467] <inf> PRESSURE_POLLING: temp 25.50 Cel, pressure 96.268562 kPa, altitude 447.473663 m
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[00:00:00.323,547] <inf> PRESSURE_POLLING: temp 25.50 Cel, pressure 96.267341 kPa, altitude 447.596496 m
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<repeats endlessly>
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