LSM6DSL data not correct

[oning.1]

Lsm6dsl reads out the data, and the z-axis data is always biased. When the acceleration range is set to 2G, it is placed vertically on the ground, and the z-axis is upward. The data is:

Acceleration [mg]:30.68 106.32 1998.60

the z-axis is down

​Acceleration [mg]:60.21 140.42 409.37

It can be found that the z-axis has an offset. Is this normal after lsm6dsl is powered on and initialized?

[TSand.1]

Hi, for a device in a flat position, along the z axis you should see +1g when the device is pointing upwards and -1g in case it is pointing downwards.

Also the typ offset is about 40 mg, and is much higher in your case.

Are you correctly converting the LSB into physical units (two's complement and sensitivity)?

float_t lsm6dsl_from_fs2g_to_mg(int16_t lsb)
{
  return ((float_t)lsb * 0.061f);
}

Did you check the data also on other devices?

[oning.1 · Accepted solution]

It seems to be a chip problem. After replacing the sensor chip, the problem disappears....thanks anyway