paparazzi/paparazzi — pull request #735 by flixr (2014-05-30 21:21:23+00:00)
Title: add GEO_MAG message to send magnetic field

So you can actually check the normalized magnetic field that is used in AHRS calculations, especially if it set depending on location by the geo_mag module or estimated in flight.

On a side-note: ins float_invariant should also be able to take the result of geo_mag instead of only airframe file value...

Maybe someone has a better message name?