zephyr

History

Anas Nashif 70758c4374 tests: fix test identifiers The seasonal overhaul of test identifiers aligning the terms being used and creating a structure. This is hopefully the last time we do this, plan is to document the identifiers and enforce syntax. The end-goal is to be able to generate a testsuite description from the existing tests and sync it frequently with the testsuite in Testrail. Signed-off-by: Anas Nashif <anas.nashif@intel.com>		2019-12-09 15:53:44 -05:00
..
src	coccinelle: standardize k_sleep calls with integer timeouts	2019-10-09 08:38:10 -04:00
CMakeLists.txt	…
README.rst	doc: fix broken file and zephyr-app refs	2019-10-08 15:42:32 -05:00
prj.conf	…
sample.yaml	tests: fix test identifiers	2019-12-09 15:53:44 -05:00

README.rst

.. _bme680:

BME680: Integrated environmental sensor
#####################################################

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

This sample application periodically (every 3s) measures the ambient temperature
in degrees Celsius, atmospheric pressure in kilopascal, relative humidity in percentage,
and gas sensor resistance in ohms. The result is written to the console.

References
**********

 - BME680: https://www.bosch-sensortec.com/bst/products/all_products/bme680

Wiring
*******

This sample uses the BME680 sensor controlled using the I2C interface.
Connect Supply: **VDD**, **VDDIO**, **GND** and Interface: **SDA**, **SCL**.
The supply voltage can be in the 1.8V to 3.6V 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 BME680
sensor. It should work with any platform featuring a I2C peripheral interface.
It does not work on QEMU.
In this example below the :ref:`nrf52_pca10040` board is used.


.. zephyr-app-commands::
   :zephyr-app: samples/sensor/bme680
   :board: nrf52_pca10040
   :goals: build flash

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

.. code-block:: console

   Device 0x20002b74 name is BME680
   T: 23.988877; P: 97.648568; H: 53.689533; G: 1035.211466
   T: 24.168500; P: 97.648866; H: 53.565966; G: 1046.677896
   T: 24.336533; P: 97.648596; H: 53.353663; G: 1058.656533
   T: 24.589696; P: 97.648366; H: 53.958864; G: 1072.155863
   T: 24.856631; P: 97.648322; H: 53.553669; G: 1096.448788

   <repeats endlessly>