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MNepu.1
Visitor II
August 3, 2021
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LSM6DSOTR- Minimum motion on INT1 to generate an interrupt?

  • August 3, 2021
  • 1 reply
  • 692 views

What registers do we need to set to generate the minimum motion interrupt on INT1? The picture included contains what we have tried so far. 0693W00000D1QCWQA3.png

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    Best answer by TBomb.1

    Hi, it depends on the interrupt you want to rise. In any case, the minimum signal that can raise a specific interrupt is the LSB of that particular interrupt's threshold. For example, the minimum threshold for wakeup is: 1 LSB weight depends on WAKE_THS_W in WAKE_UP_DUR (5Ch). For the TAP feature, the register is the TAP_CFG1 (57h) (only 5 bits, 1 LSB = FS_XL / (2^5) ).

    The typical formula is 1 LSB = FS_XL / (2^N_thres_bits) 

    https://www.st.com/resource/en/datasheet/lsm6dso.pdf

    Tom

    1 reply

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    TBomb.1Answer
    Visitor II
    August 4, 2021

    Hi, it depends on the interrupt you want to rise. In any case, the minimum signal that can raise a specific interrupt is the LSB of that particular interrupt's threshold. For example, the minimum threshold for wakeup is: 1 LSB weight depends on WAKE_THS_W in WAKE_UP_DUR (5Ch). For the TAP feature, the register is the TAP_CFG1 (57h) (only 5 bits, 1 LSB = FS_XL / (2^5) ).

    The typical formula is 1 LSB = FS_XL / (2^N_thres_bits) 

    https://www.st.com/resource/en/datasheet/lsm6dso.pdf

    Tom

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