@Override
public void onSensorChanged(SensorEvent event) {
if (firstRun) {
startTime = event.timestamp;
firstRun = false;
}
if (event.sensor.getType() == Sensor.TYPE_MAGNETIC_FIELD_UNCALIBRATED) {
magneticFieldBias.calcBias(event.values);
// storing data to file
ArrayList<Float> dataValues = ExtraFunctions.arrayToList(event.values);
dataValues.add(0, (float) (event.timestamp - startTime));
dataFileWriter.writeToFile("Magnetic_Field_Uncalibrated", dataValues);
}
}