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Xtrinsic E-Compass Software  Favorite



Freescale Xtrinsic tilt-compensated e-compass and magnetic calibration software fuses data from accelerometer and magnetometer sensors to provide an accurate magnetic compass heading corrected for orientation and hard and soft iron magnetic interference. Target applications are smartphones, tablet PCs and portable navigation devices.

The software is provided free of charge for evaluation and commercial use to Freescale customers using an Xtrinsic MAG3110, FXOS8700CQ, or other Freescale magnetometer.

The seven-element model supports both hard and soft iron gain correction. This is recommended for customers with typical soft iron interference.

The four-element model is a hard iron only version of the calibration software that is provided in the software download for customers looking for the lowest possible power requirement.


Features


  • Tilt compensated e-compass
  • Hard and soft iron calibration
  • Standard ANSI C code supplied as source code
  • Flash footprint 20 KB (approximate)
  • RAM requirements 6.5 KB (approximate)

Supported Devices


  • MAG3110: Xtrinsic High Accuracy, 3D Magnetometer

Featured Documentation


  • ECOMPASSFS: Software for Tilt-Compensated E-Compass with Magnetic Calibration - Fact Sheet
  • MAGCALSWUG: Implementing a Tilt-Compensated eCompass with Magnetic Calibration
  • AN4248: AN4248, Implementing a Tilt-Compensated E-Compass Using Accelerometer and Magnetometer Sensors - Application Notes
  • AN4246: AN4246, Calibrating an eCompass in the Presence of Hard and Soft-Iron Interference - Application Note
  • AN4247: AN4247, Layout Recommendations for PCBs Using a Magnetometer Sensor - Application Notes

Current Updates and Releases