LSM6DSV Gyro Standard deviation out of range

[lemon923]

Hi, I developed lsm6dsv driver on Android CHRE framework. In Android CTS test, some items failed, the reason is "LSM6DSV Gyro Standard deviation out of range: stddev=(0.004091, 0.001167, 0.000378) (expected (0.003456, 0.003456, 0.003456))". How to fix this?

Thank you~

[lemon923]

I also observed a strange phenomenon, when I turned on the accel, gyro data changed.  Pls refer to the following table,

[4] = -0.001198, 0.000000, 0.000000 @ 11339944704390
[4] = 0.000000, 0.000000, 0.000000 @ 11340078227965
[4] = -0.001198, 0.000000, 0.000000 @ 11340211751678
[4] = -0.001198, 0.000000, 0.000000 @ 11340345273735
[4] = 0.000000, 0.000000, 0.000000 @ 11340478797192
[4] = -0.001198, 0.000000, 0.000000 @ 11340612320430
[4] = -0.001198, 0.000000, 0.000000 @ 11340745843887
[4] = -0.002463, -0.001198, -0.001198 @ 11341146402915 -----> turn on accel sensor
[4] = -0.002463, -0.001198, 0.000000 @ 11341279937651
[4] = -0.002463, -0.001198, -0.001198 @ 11341413467508
[4] = -0.002463, -0.002463, -0.001198 @ 11341546991091
[4] = -0.002463, -0.001198, -0.001198 @ 11341680518836
[4] = -0.002463, -0.001198, -0.001198 @ 11341814036019
[4] = -0.002463, -0.002463, -0.001198 @ 11341947561204
[4] = -0.002463, -0.001198, -0.001198 @ 11342081078451
[4] = -0.002463, -0.002463, -0.001198 @ 11342214602228
[4] = -0.002463, -0.001198, -0.001198 @ 11342348127603
[4] = -0.002463, -0.001198, -0.001198 @ 11342481651572
[4] = -0.002463, -0.001198, 0.000000 @ 11342615173404
[4] = -0.002463, -0.001198, 0.000000 @ 11342748696733
[4] = -0.002463, -0.001198, -0.001198 @ 11342882220965
[4] = -0.002463, -0.001198, -0.001198 @ 11343015744294
[4] = -0.002463, -0.001198, -0.001198 @ 11343149265265
[4] = -0.002463, -0.001198, -0.001198 @ 11343282788594
[4] = -0.002463, -0.001198, -0.001198 @ 11343416310347
[4] = -0.002463, -0.001198, -0.001198 @ 11343549833420
[4] = -0.002463, -0.001198, -0.001198 @ 11343683353752
[4] = -0.002463, -0.001198, -0.001198 @ 11343816876185
[4] = 0.000000, 0.000000, 0.000000 @ 11344083926951 -----> turn off accel sensor
[4] = -0.001198, 0.000000, 0.000000 @ 11344217453111
[4] = -0.001198, 0.000000, 0.000000 @ 11344350977112
[4] = 0.000000, 0.000000, 0.000000 @ 11344484499959

[Joe WILLIAMS · Accepted solution]

Hello Lemon923

Your case is being reviewed through ST's Online Support System now.

Kind Regards

Joe WILLIAMS

STMicro Support

[lemon923]

Hi Joe,

Please feel free to leave a message if you need more information.

Thanks & Best Regards

[lemon923]

Need to discard some samples refer to AN5922 document.

https://www.st.com/resource/en/application_note/an5922-lsm6dsv-6axis-imu-with-embedded-sensor-fusion-i3c-oiseis-for-smart-applications-stmicroelectronics.pdf