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zephyr/samples/sensor/dht
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Watson Zeng 7a3f9c4e39 tests: add filter for some tests using newlib 
some tests configured with CONFIG_NEWLIB_LIBC=y,
it's better to add a filter filter: TOOLCHAIN_HAS_NEWLIB == 1
in those tests yaml file.

Signed-off-by: Watson Zeng <zhiwei@synopsys.com>
2020-12-16 08:57:40 -05:00
..
boards boards: nrf52_pca10040: Rename to nrf52dk_nrf52832 2020-04-06 13:09:07 +02:00
src device: Const-ify all device driver instance pointers 2020-09-02 13:48:13 +02:00
CMakeLists.txt samples: make find_package(Zephyr...) REQUIRED 2020-05-29 10:47:25 +02:00
prj.conf samples: add FP formatting to all samples that require it 2020-11-17 14:44:59 -06:00
README.rst boards: nrf52_pca10040: Rename to nrf52dk_nrf52832 2020-04-06 13:09:07 +02:00
sample.yaml tests: add filter for some tests using newlib 2020-12-16 08:57:40 -05:00

README.rst 

.. _dht:

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:

.. zephyr-app-commands::
   :zephyr-app: samples/sensor/dht
   :board: nrf52dk_nrf52832
   :goals: build flash

Sample Output
=============

.. code-block:: console

   *** 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

<repeats endlessly>