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    IAQ on Raspberry Pi Pico no output

    MightyNate
    Member

    IAQ on Raspberry Pi Pico no output

    I'm trying to measure the IAQ using BSEC, a BME680 sensor and the Raspberry Pi Pico

     

    I got everything working on a Raspberry Pi 4 with Raspbian installed, but I encounter problems while porting the application onto the Pico.

    When I run the bsec_iot_example, the bsec_iot_loop does not output any measurement data.

    So I did some debugging and realised that when bsec_iot_loop calls bme680_get_sensor_data it returns

    BME680_W_NO_NEW_DATA 

    I can confirm that the sensor is connected properly via I2C, so that is not the problem here.

    My suspicion is that I need to load the bsec_serialized_configuration.h but I dont know how to do that.

    It might as well be a problem with the state_load_fct or the config_load_fct, which i did not implement, since the Pico has no non-volatile memory to load those files from.

    If You have any idea what I should try to make this work, I would be very grateful.

    1 REPLY 1
    BSTRobin
    Community Moderator

    Re: IAQ on Raspberry Pi Pico no output

    Hello MightyNate,
    It seems your integration haven't work well. If used bsec_iot_example, it could get output data from output_ready.
    1.Can you check the implementation of the following two functions?
    void sleep(uint32_t t_ms);
    int64_t get_timestamp_us();

    2.Refer other community ticket to check if memory(heap, stack size) is enough for BSEC algorithm?

    https://community.bosch-sensortec.com/t5/MEMS-sensors-forum/BME680-with-BSEC-produces-on-0-0s-even-a...

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