Thank you very much, that will help me!
I’ve tried the magnetic_sensor_spi_example with “MagneticSensorSPI sensor = MagneticSensorSPI(2, 14, 0x000);” and got values back but they seem strange to me.
I will have a look at the new GenericSensor class. As you may notice from my text I don’t understand much of it but I will try to make it running: 
Might take a little though. 