Magnetometer Calibration for OMAP4 Android

Brad Griffis

When OEMs are producing Android based devices is there any kind of magnetometer calibration solution that's readily available (perhaps bundled in Android) that they can use? Any suggestions?

over 12 years ago

0 Gina Glaser over 12 years ago

TI__Expert 8055 points

The GPS status app is recommended in a lot of forums for calibrating the compass with Android:
https://play.google.com/store/apps/details?id=com.eclipsim.gpsstatus2&hl=en

Also, here is an overview of the API for sensors in Android:
http://developer.android.com/guide/topics/sensors/sensors_overview.html

Regards,
Gina

0 Brad Griffis over 12 years ago in reply to Gina Glaser

TI__Guru*** 125430 points

Interesting. It's not clear to me which sensors would be calibrated on a production line and which sensors would be calibrated by the customer, i.e. by a calibration app, etc. It's also not clear which sensors would require "1 time calibration" versus sensors that need some kind of periodic calibration. The compass app on my phone periodically asks me to recalibrate so it seems like it may be sensor-dependent.

If anyone else has any further details to shed on the subject that would be great. Otherwise I'll have the customer consult with the sensor vendor and/or do their own thing.

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Magnetometer Calibration for OMAP4 Android