2019-12-17 00:22:48 +08:00
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.. _dht:
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DHT: Aosong DHT Digital-output Humidity and Temperature Sensor
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##############################################################
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Description
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***********
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This sample application periodically (0.5 Hz) measures the ambient
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temperature and humidity. The result is written to the console.
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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 sensor variant and the GPIO
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used to control the sensor.
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Building and Running
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********************
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After providing a devicetree overlay that specifies the sensor location,
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build this sample app using:
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.. zephyr-app-commands::
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:zephyr-app: samples/sensor/dht
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2020-04-03 00:24:56 +08:00
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:board: nrf52dk_nrf52832
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2019-12-17 00:22:48 +08:00
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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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*** Booting Zephyr OS build zephyr-v2.1.0-329-g38418b26c4cc ***
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[0:00:00.027]: 20.0 Cel ; 48.7 %RH
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[0:00:02.053]: 19.8 Cel ; 48.7 %RH
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[0:00:04.079]: 20.0 Cel ; 48.7 %RH
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[0:00:06.105]: 19.8 Cel ; 48.7 %RH
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[0:00:08.130]: 20.0 Cel ; 48.8 %RH
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[0:00:10.156]: 20.1 Cel ; 48.8 %RH
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[0:00:12.182]: 19.7 Cel ; 48.7 %RH
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[0:00:14.207]: 20.0 Cel ; 48.8 %RH
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<repeats endlessly>
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