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BMC150 Datasheet(PDF) 29 Page - Bosch Sensortec GmbH

Part # BMC150
Description  6-axis eCompassBMC150: Data sheet
PDF  142 Pages
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Manufacturer  BOSCH [Bosch Sensortec GmbH]
Direct Link  https://www.bosch-sensortec.com
Logo BOSCH - Bosch Sensortec GmbH

BMC150 Datasheet(HTML) 29 Page - Bosch Sensortec GmbH

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Datasheet
eCompass BMC150
Page 29
BST-BMC150-DS000-04 | Revision 1.0 | July 2014
Bosch Sensortec
© Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to
third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.
Note: Specifications within this document are subject to change without notice. Not intended for publication.
4.3.4 Magnetic field data temperature compensation
The raw register values DATAX, DATAY, DATAZ and RHALL are read out from the host
processor using the BMC150 API/driver which is provided by Bosch Sensortec. The API/driver
performs an off-chip temperature compensation and outputs x/y/z magnetic field data in
16 LSB/µT to the upper application layer:
Figure 6: Calculation flow of magnetic field data from raw BMC150 register data
The API/driver performs all calculations using highly optimized fixed-point C-code arithmetic.
For platforms that do not support C code, a floating-point formula is available as well.
BMC150
sensor
Hardware level
Software
driver level
BMC150
API / driver
(provided by
Bosch Sensortec)
Application
Software
application level
Magnetometer raw register data
(DATAX, DATAY, DATAZ, RHALL)
Temperature compensated
magnetic field data x/y/z in
signed int, (16 LSB/µT) or float
Config
Config



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