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    BMI160 converting data with resolution

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    BMI160 converting data with resolution

    Hello

    How do I convert the Rawdata of the Gyroscope and the accelerometer into °/s and m/s^2?

    Do I need to multiply the raw data with the typ. value of the sensitivity? (LSB/°/s)

    How do I know which range I am having in my programme, when I did not set any?

    Kind regards

    Sophie

    6 REPLIES 6
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    Occasional Contributor

    Re: BMI160 converting data with resolution

    Hi Sophie,

    How do I convert the Rawdata of the Gyroscope and the accelerometer into °/s and m/s^2?

    -----> For Acc if the register data is 16-bits

          Sensitivity(in datasheet) = (2^15)/Range .

          Example:  Range = +/-8G, then sensitivity = (2^15)/8  * 9.8   (LSB/m/s^2)

          m/s^2 = Raw_data / sensitivity

          For Gyo , if the register data is 16-bits

          Sensitivity(in datasheet) = (2^15)/Range

          Example: Range = +/-2000dps, then sensitivity = (2^15)/2000  (LSB/°/s)

          °/s = Raw_data / sensitivity

    Do I need to multiply the raw data with the typ. value of the sensitivity? (LSB/°/s)

     -------> No. Raw data (LSB) divided by the corresponding sensitivity

    How do I know which range I am having in my programme, when I did not set any?

     -------> please check the sensor's datasheet register map,

            Address 0x41 for Acc range setting; 0x43 for Gyro range setting

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    Re: BMI160 converting data with resolution

    @

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    Senior Member

    Re: BMI160 converting data with resolution

    The registers according to the datasheet are 2bytes for each axis for accel and gyro. See DATA register 0x04 - 0x17 pg51 or register map pg48

    Hope this helps
    Nick
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    Member

    Re: BMI160 converting data with resolution

    @Nikosant03 Thank you for your answer! The other question is: Where I can find the Information  that for a 16-bit register I have to do (2^15)/range for the sensitivity. I did not find this in te datasheet.

     

    Thanks!

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