.. zephyr:code-sample:: dht_polling
:name: Generic digital humidity temperature sensor polling
:relevant-api: sensor_interface
Get temperature and humidity data from a DHT sensor (polling mode).
Overview
********
This sample application demonstrates how to use digital humidity temperature
sensors.
Building and Running
********************
This sample supports up to 10 humidity/temperature sensors. Each sensor needs to
be aliased as ``dhtN`` where ``N`` goes from ``0`` to ``9``. For example:
.. code-block:: devicetree
/ {
aliases {
dht0 = &hs300x;
};
};
Make sure the aliases are in devicetree.
It also requires a correct fixture setup when the sensor is present.
For the correct execution of that sample in twister, add into boards's
map-file next fixture settings::
- fixture: fixture_i2c_hs300x
Then build and run with:
.. zephyr-app-commands::
:zephyr-app: samples/sensor/dht_polling
:board: <board to use>
:goals: build flash
:compact:
Sample Output
=============
.. code-block:: console
hs300x@44: temp is 25.31 °C humidity is 30.39 %RH
hs300x@44: temp is 25.51 °C humidity is 30.44 %RH
hs300x@44: temp is 25.51 °C humidity is 30.37 %RH
hs300x@44: temp is 25.51 °C humidity is 30.39 %RH
hs300x@44: temp is 25.31 °C humidity is 30.37 %RH
hs300x@44: temp is 25.31 °C humidity is 30.35 %RH
hs300x@44: temp is 25.51 °C humidity is 30.37 %RH
hs300x@44: temp is 25.51 °C humidity is 30.37 %RH
hs300x@44: temp is 25.51 °C humidity is 30.39 %RH
hs300x@44: temp is 25.51 °C humidity is 30.44 %RH
hs300x@44: temp is 25.51 °C humidity is 30.53 %RH
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