| .. 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 |
