AN4650 datasheet(70/102 Pages) STMICROELECTRONICS

70 / 102 page

Mode 2 - sensor hub mode

AN4650

70/102

DocID027415 Rev 1

The acquired magnetometer raw data are available in registers from address 66h

(OUT_MAG_RAW_X_L) to 6Bh (OUT_MAG_RAW_Z_L).

The magnetometer uncalibrated data (with soft-iron only applied) are available in registers

from address 4Dh (SENSORHUB13_REG) to 52h (SENSORHUB18_REG).

The magnetometer calibrated data, with both hard-iron and soft-iron correction are available

in registers from address 2Eh (SENSORHUB1_REG) to 33h (SENSORHUB6_REG).

18 Write 03h into MAG_OFFY_H

// Y offset value initialization

19 Write 61h into MAG_OFFY_L

// Y offset value initialization

20 Write FCh into MAG_OFFZ_H

// Z offset value initialization

21 Write EFh into MAG_OFFZ_L

// Z offset value initialization

22 Write 0Ah into MAG_SI_XX

// XX soft-iron element

23 Write 01h into MAG_SI_XY

// XY soft-iron element

24 Write 00h into MAG_SI_XZ

// XZ soft-iron element

25 Write 01h into MAG_SI_YX

// YX soft-iron element

26 Write 08h into MAG_SI_YY

// YY soft-iron element

27 Write 81h into MAG_SI_YZ

// YZ soft-iron element

28 Write 00h into MAG_SI_ZX

// ZX soft-iron element

29 Write 81h into MAG_SI_ZY

// ZY soft-iron element

30 Write 0Ah into MAG_SI_ZZ

// ZZ soft-iron element

31 Write 00h into FUNC_CFG_ADDRESS

// Disable access to embedded functions registers

32 Write 3Ch into CTRL10_C

// Enable embedded functions

33 Write 0Bh into MASTER_CONFIG

// Enable internal pull-up on SDx/SCx lines

// Sensor hub trigger signal is XL data-ready

// Enable hard-iron correction

// Enable auxiliary I2C master

34 Write 3Ch into CTRL9_XL

// Enable soft-iron correction

35 Write 80h into CTRL1_XL

// Turn-on the accelerometer (for trigger signal)

AN4650 Datasheet(PDF) 70 Page - STMicroelectronics

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