zephyr

History

Peter Bigot 56048bb500 samples: add FP formatting to all samples that require it Samples that include floating-point format specifications may need cbprintf FP support. Make sure it's available. Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>		2020-11-17 14:44:59 -06:00
..
boards	samples: sensor: sht3xd: Move dts overlays under boards	2020-04-01 10:44:31 -04:00
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
README.rst	global: Remove leading/trailing blank lines in files	2019-12-11 19:17:27 +01:00
prj.conf	samples: add FP formatting to all samples that require it	2020-11-17 14:44:59 -06:00
sample.yaml	sanitycheck: inclusive language	2020-08-27 07:04:07 -04:00
trigger.conf	drivers: sensor: sht3xd: convert to new GPIO APIO	2020-02-05 12:00:36 +01:00

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>