Specification Sheet

WT901BLECL | Datasheet v20-0707 | http://wiki.wit-motion.com/english
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6.2 Commands
6.2.1 Read Register Value
FF AA 27 XX 00
Read register value
--XX is register.
For example::
Read magnetic field：FF AA 27 3A 00
Read quaternion： FF AA 27 51 00
Read temperature： FF AA 27 40 00
After send instructions, the module turns back a data packet 0x55 0x71.
There are register addresses and 7 registers data (Fixed upload 8 registers).
6.2.2 Calibration
FF AA 01 01 00
Accelerometer Calibration
FF AA 01 07 00
Magnetic Calibration
FF AA 01 00 00
Quit the calibration
For example, to calibrate the magnetic field,
Step 1. Send FF AA 01 07 00
Step 2. Rotate the sensor 360 degree around three axis
(it is recommended to rotate 3 circle, 360 degree *3)
Step 3. Send FF AA 01 00 00 to quit the calibration