Compass setting problems

I have installed Rover 4.2.3 on Pixhawk1 with HereGPS.
This figure shows the compass screen of MP.

  • The third sensor is a mystery.
  • Though it is fixed in this picture, the first sensor is checked externally.
  • I can’t uncheck any “External” checkbox.
  • Orientation cannot be changed.
  • “Missing” cannot be checked.

I can’t change the Orienntation, and I can’t check Missing.
Fortunately, I can fix them in full parameter list.

The Radio link version old MP recognizes the two compasses and can operate them normally.

Is it a bug of MP?

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