ISM303DLC Library

[Anil3]

Hi i am using ISM303DLC sensor could you please suggest me which library i have to integrate to get the Roll, Pitch and Heading.

[Eleon BORLINI]

Hi @Anil​ ,

Do you mean you are looking for the sensor fusion library to get quaternions or euler angles calculation?

In this case, you can refer to the MotionFX library of the X-CUBE-MEMS1 firmware function pack, which runs as middleware on STM32 and provides real-time motion-sensor data fusion. It also performs gyroscope bias and magnetometer hard iron calibration. 

-Eleon

[Anil3]

Hi @Eleon BORLINI​ 

I have integrated the fotionFX library and receiving the values but here i have observed that the heading values are varying if they have kept any piece of iron near to it... why it is happening so may i know the reason as the library itself do hard iron and soft iron calibrarion...

please suggest how to overcome this issue.

Thank you,

ANIL.

[Petr S]

Calibration eliminates the hard and soft iron distortion that is "physically connected" to the device for example DC power tracks (wires). If the distortion comes from outside the calibration doesn't have effect because in the compass is the final magnetic field and there is no way how to distinguish which field comes from the earth and which is the one from nearby iron or other sources.