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    IAQ from BME688 on NRF9160 ZephyrRTOS

    IAQ from BME688 on NRF9160 ZephyrRTOS

    DDVi
    Member

    Hi, Zephyr already has support for BME680. We are interested in IAQ from BME688 on NRF9160 ZephyrRTOS, and have been using this:

    https://github.com/zephyrproject-rtos/zephyr/blob/main/drivers/sensor/bme680/bme680.c#L383

    But the values saturate at 250. Shouldn't it go up to 500? It would go up to 250 in rather benign situations and flatten there. I have tried putting it close to Alcohol, surrounding it with ethanol but can only get a flat line at 250. 

    Many thanks for any hints?

    5 REPLIES 5

    BSTRobin
    Community Moderator
    Community Moderator

    Hello DDVi,

    What is the current accuracy value? And how long did you test it?

    The accuracy says 0. They have been running for over a month, both indoors and outdoors. 

    BSTRobin
    Community Moderator
    Community Moderator

    Hello DDVi,

    There was BSEC example code in another topic, you could refer here: https://community.bosch-sensortec.com/t5/MEMS-sensors-forum/NRF52840-with-BME680/m-p/49693/highlight...

    IAQ accuracy.png

    wassfila
    Occasional Visitor

    Hi,

    in this project, I ported the BME68x-Sensor-API driver and Bosch-BSEC2-Library into Zephyr
    https://github.com/HomeSmartMesh/sdk-hsm-thingy53

    In the samples of project I shared, is target is not the NRF9160 but the Thingy53, but as it is a BME688 integration into Zephyr, porting it to your target should be quite easy as the provided driver and library are outside the samples and can be added with config flags.

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