HMR3300 Datasheet, PDF (6/11 Pages) Honeywell Solid State Electronics Center – Digital Compass Solutions

HMR3200/3300
OPERATIONAL COMMANDS
Syntax: *X<cr><lf>
Sends command for an operational mode change. The * prefix indicates command type.
A #I response indicates an invalid command was sent.
Heading Output Command
*H<cr><lf>
Selects the Heading output mode (factory set default). This configuration is saved in non-volatile memory. All data
are in decimal degrees.
Response Format: Heading<cr><lf> (HMR3200 only and 15 times per second)
Eg: 235.6<cr><lf>
Response Format: Heading, Pitch, Roll<cr><lf> (HMR3300 only and 8 times per second)
Eg: 123.4, 18.6, -0.5<cr><lf>
Magnetometer Output Command
*M<cr><lf>
Selects the magnetometer output mode. This configuration is saved in non-volatile memory. All data are in signed
decimal values with user calibration offsets included.
Response Format: MagX, MagY, MagZ<cr><lf>
Eg: 1256, -234, -1894<cr><lf>
Compass Orientation (HMR3200 only)
*L<cr><lf>
Heading calculation is done assuming the compass is level (XY).
*U<cr><lf>
Heading calculation is done assuming the compass is upright (connector end down) (YZ).
These orientation commands are saved in non-volatile memory.
Starting and Stopping Data Output
*S<cr><lf>
The data output will toggle between Start and Stop each time this command is issued (factory set default is Start,
first Start/Stop command will stop data output). Continuous data streaming control. Most commands require the
compass to be in a stop condition for the controller to immediately execute the desired command.
Query Output
*Q<cr><lf>
Query for a single output response string in the currently selected mode (Magnetometer/Heading). The *Q
commands are allowed only in Stop data mode. Query commands allow the user to slow the data flow by
requesting each response string.
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