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zephyr/samples/sensor/sht3xd
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Gerard Marull-Paretas a202341958 devices: constify device pointers initialized at compile time 
Many device pointers are initialized at compile and never changed. This
means that the device pointer can be constified (immutable).

Automated using:

```
perl -i -pe 's/const struct device \*(?!const)(.*)= DEVICE/const struct
device *const $1= DEVICE/g' **/*.c
```

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
 		2022-08-22 17:08:26 +02:00
..
boards
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src devices: constify device pointers initialized at compile time 2022-08-22 17:08:26 +02:00
CMakeLists.txt
…
README.rst
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prj.conf sensors: Remove unnecessary Kconfig setting of sensors 2022-07-25 15:18:56 +02:00
sample.yaml
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trigger.conf sensors: Remove unnecessary Kconfig setting of sensors 2022-07-25 15:18:56 +02:00

README.rst 

.. _sht3xd:

SHT3XD: High accuracy digital I2C humidity sensor
#################################################

Description
***********

This sample application periodically (2 Hz) measures the ambient
temperature and humidity. The result is written to the console.
Optionally, it also shows how to use the upper threshold triggers.

References
**********

 - `SHT3X-DIS sensor <https://www.sensirion.com/en/environmental-sensors/humidity-sensors/digital-humidity-sensors-for-various-applications/>`_

Wiring
*******

This sample uses the SHT3X_DIS sensor controlled using the I2C interface.
Connect Supply: **VDD**, **GND** and Interface: **SDA**, **SCL**
and optionally connect the **ALERT** to a interrupt capable GPIO.
The supply voltage can be in the 2.15V to 5.5V range.
Depending on the baseboard used, the **SDA** and **SCL** lines require Pull-Up
resistors.

Building and Running
********************

This project outputs sensor data to the console. It requires a SHT3XD
sensor. It should work with any platform featuring a I2C peripheral
interface.  It does not work on QEMU.  In this example below the
:ref:`nrf51_ble400` board is used.


.. zephyr-app-commands::
   :zephyr-app: samples/sensor/sht3xd
   :board: nrf51_ble400
   :goals: build flash

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

.. code-block:: console

   SHT3XD: 19.64 Cel ; 41.96 %RH
   SHT3XD: 19.74 Cel ; 42.06 %RH
   SHT3XD: 19.75 Cel ; 42.08 %RH

<repeats endlessly>