BMM150 with BMI160 Calibration

[Victoria]

Hello, 

I am using the magnetometer BMM150 through the BMI160 and I am having trouble calibrating the magnetometer.

Looking at the GitHub https://github.com/BoschSensortec/BMI160_driver I understand they use this function to calibrate the magnetometer

/* Compensating the raw mag data available from the BMM150 API */
	rslt = bmm150_aux_mag_data(mag_data, &bmm150);

1) what does this function do?

2) what do I have to do if I want to do a manual calibration? Is there any way I can include the data from the accelerometer and gyroscope to do so?

Thanks

[Minhwan · Accepted solution]

Hello 

1) Basically, you can get mag data using bmi160_extract_aux function. But, need to compensate using below fucntion.  

bmm150_aux_mag_data(mag_data, &bmm150)

2) If you have your own algorithm and want to use accel and gyro data for compenstation, you can use it. 

You also can get a data using bmi160_extract_gyro, bmi160_extract_accel. 

Please check below url and the attached file. 

( The attached file is updated version of the url guide )

https://github.com/BoschSensortec/BMI160_driver/wiki/How-to-use-an-auxiliary-sensor-or-magnetometer-....

Thanks,