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    BM680 SENSOR, VOC RESULT GETTING PROBLEM

    BM680 SENSOR, VOC RESULT GETTING PROBLEM

    hihith
    New Poster

    I already import in BSEC library in my code. (platform:IDE: Simplicity StudioMCU: EFM32LG332F128G-F-QFP64). However, after execute the "bsec_do_steps" routine, no VOC output result is found. The result is attached. (Remark: NO sensor id = '4' ,BSEC_OUTPUT_BREATH_VOC_EQUIVALENT)

     

    no_sensor_id_4.png

     

    Thank!

    17 REPLIES 17

    Minhwan
    Community Moderator
    Community Moderator

    Hello hihith, 

     

    get_timestamp_us is micro second based. If xTaskGetTickCount is nano second based, you just have to multiply 1000, not 1,000,000. 

    It doesn't have to have very accurate value, but we check it as system time, should be enough to check time like clock. 

    After changing, and please test it. 

    Thanks, 

    I have try to set that timestamp into nano sec. format as the below request:

    /* get the timestamp in nanoseconds before calling bsec_sensor_control() */

    However, the bvoc result still not change. (Remark: i have attached the setting as below)

     

     

    setting.png

     

     

    Minhwan
    Community Moderator
    Community Moderator

    Hello hihith, 

     

    Could you upload your source code one more time? 

    I will check it. 

    Thanks, 

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