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    BMX160 Weird behavior while configuring MAG sensor

    YahyaTawil
    Established Member

    Re: BMX160 Weird behavior while configuring MAG sensor

    I can not use the provided demo because it is not using the interrupt pin and for other technical specs related of the way this demo is designed. 

     

    However, my question is simple, is the Table 16 missing  something?. I followed the Table 16 in the BMX160 datasheet and the code and I2C log, which shows a weird behavior, are provided in my first 2 replies. 

     

    Thanks

    YahyaTawil
    Established Member

    Re: BMX160 Weird behavior while configuring MAG sensor

    The issue was because of PCB problem making the trace of VDD line not properly provide the needed voltage when Mag start-up. The voltage drops below the power supply accepted range and this explains why the chips seem to refuse any command later.   

     

    YahyaTawil_0-1627738686255.png

     

    A full view of the power supply line (the voltage drop stay for 10 mS). Before the drop, Acc and Gyro where enabled. 

    YahyaTawil_1-1627738710260.png

     

    Thanks

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