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]

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