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    BMI088 incoming data changes without moving the BMI088

    Jamu
    New Poster

    BMI088 incoming data changes without moving the BMI088

    Hi,

    I am reading the BMI088 with I2C, I've tested that the communication is working well with checking chip id. 

    I have set the gyro 1000dps, and request 6 bytes. On reading I bitshift the first byte and use bitwise or with the second received byte. After this I convert my raw data into degree/second. I would expect, without moving the gyroscope at all, that the data readings would not change by much. In the image you can see that the ouput in degree/second changes alot without moving the BMI088.

    Jamu_0-1648312487295.png

    Does anyone has any idea what could be the problem?

    Thank you in advance

     

    2 REPLIES 2
    BSTRobin
    Community Moderator

    Re: BMI088 incoming data changes without moving the BMI088

    Hi Jamu,

    Did you use BMI088 sensor API on github? https://github.com/BoschSensortec/BMI08x-Sensor-API/tree/master/examples/read_sensor_data
    In addition to the range, what else have you configured? Such as power mode, ODR, bandwidth, etc.

    Jamu
    New Poster

    Re: BMI088 incoming data changes without moving the BMI088

    Hi Robin,

    After rereading the datasheet multiple times I've found the problem. I was bitshifting the first incoming byte to the MSB. After reading the datasheet more carefully I found out that the first incoming byte is the LSB. After applying this solution the error was +-4 dps in rest, which is not such big difference.

    Thank you for the reply.

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