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    BMI088 Data Problem

    BMI088 Data Problem

    yuxinmiao
    Member

    Hello,I used the BMI088 sensor to read the accelerometer data recently,but I find a problem.I put the STM32 board on the level table.But the z-axis output is sometimes around 9.8, sometimes equal to 0.This have a huge impact on my subsequent calculations.

    Here, I set ACCEL_ODR to 1600HZ.Data synchronization is not used.

    The following result is the acceleration data I output over a period of time.

    X = 0.00 Y = 0.00 Z = 0.00
    X = 0.00 Y = -0.08 Z = 9.93
    X = -0.06 Y = -0.02 Z = 9.89
    X = -0.01 Y = -0.06 Z = 0.00
    X = 0.03 Y = 0.00 Z = 0.00
    X = -0.09 Y = -0.04 Z = 9.98
    X = 0.01 Y = -0.06 Z = 7.40
    X = 0.04 Y = -0.06 Z = 7.58
    X = 0.03 Y = -0.05 Z = 9.28
    X = -0.01 Y = -0.14 Z = 9.73
    X = -14.55 Y = 0.00 Z = 0.00
    X = 0.00 Y = 0.00 Z = 0.00
    X = -0.01 Y = -0.10 Z = 9.92
    X = 0.02 Y = 0.00 Z = 0.00
    X = -0.04 Y = -0.03 Z = 9.88
    X = 0.03 Y = -0.04 Z = 7.40
    X = -0.02 Y = -0.11 Z = 9.21
    X = 0.20 Y = 0.00 Z = 0.00
    X = 0.02 Y = -0.09 Z = 9.88
    X = 0.03 Y = -0.11 Z = 9.91
    X = 0.04 Y = -0.10 Z = 9.89
    X = 0.05 Y = -0.14 Z = 9.94
    X = 0.00 Y = -0.05 Z = 9.95
    X = 0.05 Y = -0.10 Z = 9.87
    X = -0.02 Y = -0.12 Z = 9.95
    X = 0.01 Y = 0.16 Z = 0.00
    X = 0.00 Y = -0.04 Z = 9.91
    X = -0.04 Y = -0.04 Z = 9.95
    X = 0.00 Y = -0.01 Z = 7.58
    X = -0.07 Y = -0.09 Z = 9.94

    1 REPLY 1

    Yanchao
    Community Moderator
    Community Moderator

    Hi,

    Please check when ODR=100hz, accel data  is ok?

    What's the interface, SPI or I2C, if the baud rate is high engouh?

    If enable data-ready interrupt, you can check the interrupt pin freq equal with ODR.

    And the best methord is using Logic to log waveform, and analysis waveform is reasonable.

    Best regards.

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