Magnetic Field Declination Source Control (0x0D,0x43)

Description

Set/Get the local magnetic field declination angle source.

Notes

This can be used to correct for the local value of declination of the earthmagnetic field. Having a correct value is important for best performance of the auto-mag calibration feature. If you do not have an accurate inclination angle source, it is recommended that you leave the auto-mag calibration feature off.

Parameter Name Data Type Description

Field Length u8 8

Descriptor u8 0x43

Function Selector u8 This command supports the following MIP function selectors:
Write Read Save Load Default [WRSLD]

Source

u8 enum

Magnetic field declination angle source

Name	Value	Description
NONE	1	No source. See command documentation for default behavior
WMM	2	Magnetic field is assumed to conform to the World Magnetic Model, calculated using current location estimate as an input to the model.
MANUAL	3	Magnetic field is assumed to have the parameter specified by the user.

Declination float Declination angle [radians] (only required if source = MANUAL)

Ack/Nack Reply See standard MIP ack/nack reply format.

Response Data Data Type Description

Response Length u8 7

Response Descriptor u8 0xB2

Source

u8 enum

Magnetic field declination angle source

Name	Value	Description
NONE	1	No source. See command documentation for default behavior
WMM	2	Magnetic field is assumed to conform to the World Magnetic Model, calculated using current location estimate as an input to the model.
MANUAL	3	Magnetic field is assumed to have the parameter specified by the user.

Declination float Declination angle [radians] (only required if source = MANUAL)