BME68X: Gas Sensor
This sample application sets up the BME68X gas sensor with the Bosch Sensor Environmental Cluster (BSEC) library.
Requirements
To use the BME68X IAQ driver, you must manually download the BSEC library. See the BME68X IAQ driver documentation for more details.
The sample supports the following devices:
Hardware platforms |
PCA |
Board name |
Board target |
|---|---|---|---|
PCA20035 |
thingy91 |
|
|
PCA20053 |
|
Building and running
This project outputs sensor data to the console. It requires a BME68X sensor.
This sample can be found under samples/sensor/bme68x_iaq in the nRF Connect SDK folder structure.
To build the sample, follow the instructions in Building an application for your preferred building environment. See also Programming an application for programming steps and Testing and optimization for general information about testing and debugging in the nRF Connect SDK.
Note
When building repository applications in the SDK repositories, building with sysbuild is enabled by default.
If you work with out-of-tree freestanding applications, you need to manually pass the --sysbuild parameter to every build command or configure west to always use it.
Testing
After programming the sample to your development kit, test it by performing the following steps:
Connect to the kit with a terminal emulator (for example, nRF Connect Serial Terminal). See Testing and optimization for the required settings and steps.
Reset the kit.
Observe that output similar to the following is logged on UART:
* Booting Zephyr OS build v3.2.99-ncs1-1531-gaf18f6b63608 * [00:00:01.285,339] <inf> app: App started [00:00:07.287,658] <inf> app: temp: 28.240385; press: 100043.570312; humidity: 19.981348; iaq: 50 [00:00:10.301,391] <inf> app: temp: 28.220613; press: 100039.585937; humidity: 19.983814; iaq: 50 [00:00:13.315,124] <inf> app: temp: 28.188013; press: 100040.007812; humidity: 20.015941; iaq: 50
Note
BSEC takes about 24 hours to calibrate the indoor air quality (IAQ) output.