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One axis Magnetometer calibration

VDVL
Associate

‎2024-10-17 01:40 AM

Hi,

I am currently using a STM32L476 with a LIS2MDL, I need to apply a calibration along only 1 axis for the magnetometer, as the system can not be rotated along the others axis.

I was wondering if there is ready made solution/library to do it?

Thank you in advance for the help or any ints 

 

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Federica Bossi
ST Employee

‎2024-10-23 02:48 AM

Hi @VDVL ,

Have you already looked at MotionFX library?

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VDVL
Associate
In response to Federica Bossi

‎2024-10-23 07:06 AM

HI @Federica Bossi 

Yes, I use this library to fuse the datas from an IMU and the magnetometer (LIS2MDL). 

The library propose "MotionFX_MagCal_run" function to calibrate the magnetometer, but (tell me if I'm wrong), it require to move the magnetometer around the 3 axis completely, if I rotate the magnetometer around only one axis (the only degree of freedom i have) it doesn't give any value.

in addition it perform only hard iron calibration, and I would also need to perform a soft iron calibration (still around one axis). 

Thanks for the hints

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