June 2017
Document 1000-4126 - FSM300 Tare Function Usage Guide - Revision 1.1
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4 / 5
4
P1 (Bitmap of Axes)
0x04
Tare ONLY on Z-
axis
5
P2 (Rotation Vector basis) 0x00
Rotation Vector
6-11
Reserved
0x00
Reserved
4.
After running this setting, the outputs of the Rotation Vector will be reoriented to this
new forward direction. This setting will revert to the Sensor Orientation FRS config
record (that was set via the last Persist Tare command) the next time the device is
rebooted.
How to Apply Tare Changes to Multiple Devices At Production
It is likely that when using the FSM300 on a production device, the orientation of the sensor will
be the same on many units. Rather than taring each individual unit, you can apply the Tare settings to
any number of additional units by using the FRS Sensor Orientation configuration record. General steps
for this are listed below. For further information about reading/writing FRS records contact Hillcrest
Labs.
1.
Run the full Tare procedure listed above (labeled as First Time Setup) on a “reference” device.
2.
Read the Sensor Orientation FRS record from the reference device.
3.
Copy this FRS record to each device’s Sensor Orientation FRS record.
4.
Now these devices will have identical Tare settings on the next hub reset.
References
1.
1000-3625 SH-2 Reference Manual, Hillcrest Labs
