DHT: Aosong DHT Digital-output Humidity and Temperature Sensor

Description

This sample application periodically (0.5 Hz) measures the ambient temperature and humidity. The result is written to the console.

Wiring

This sample uses an external breakout for the sensor. A devicetree overlay must be provided to identify the sensor variant and the GPIO used to control the sensor.

Building and Running

After providing a devicetree overlay that specifies the sensor location, build this sample app using:

# From the root of the zephyr repository
west build -b nrf52dk_nrf52832 samples/sensor/dht
west flash

Sample Output

*** Booting Zephyr OS build zephyr-v2.1.0-329-g38418b26c4cc  ***
[0:00:00.027]: 20.0 Cel ; 48.7 %RH
[0:00:02.053]: 19.8 Cel ; 48.7 %RH
[0:00:04.079]: 20.0 Cel ; 48.7 %RH
[0:00:06.105]: 19.8 Cel ; 48.7 %RH
[0:00:08.130]: 20.0 Cel ; 48.8 %RH
[0:00:10.156]: 20.1 Cel ; 48.8 %RH
[0:00:12.182]: 19.7 Cel ; 48.7 %RH
[0:00:14.207]: 20.0 Cel ; 48.8 %RH