Then the solution is quite simple: House n @ MIT used the deprecated constant (@deprecated) SensorManager.SENSOR_ACCELEROMETER = (const) 2 with the new API, while jdesbonnet used Sensor.TYPE_ACCELEROMETER = (const) 1
The constant value used above (=2) corresponds to Sensor.TYPE_MAGNETIC_FIELD = (const) 2 in the new API, so indeed House n @ MIT saw compass data, as I suspected. Case solved :-) Peli www.openintents.org On Jun 30, 4:15 pm, jdesbonnet <[email protected]> wrote: > I checked with my Vodafone branded HTC Magic (using Android 1.5 API). > Using SensorEventListener and the following code to register the > listener: > > Sensor accSensor = mSensorManager.getSensorList > (Sensor.TYPE_ACCELEROMETER).get(0); > mSensorManager.registerListener(accSensorListener, accSensor, > SENSOR_DELAY); > > I tried values for SENSOR_DELAY: SensorManager.SENSOR_DELAY_FASTEST, > SensorManager.SENSOR_DELAY_GAME and > SensorManager.SENSOR_DELAY_NORMAL... all give me g vectors with > magnitude ~ 9.8. > > Joe. > > On Jun 30, 2:17 pm, Peli <[email protected]> wrote: > > > > x: 12.5625 y: 20.8125 z: -16.4375 > > > Unfortunately, I didn't have a chance yet to try out sensors through > > the SDK 1.5 API on a real device yet, but these numbers look like they > > could be from a compass (in microTesla). > > > Did you try rotating the device around its axis, while lying flat on > > the table? Do the x and y values change? If they do, then you have > > compass data (because accelerometer is not sensitive to that > > rotation). If you don't then you have really weird accelerometer > > data... > > > Peliwww.openintents.org > > > On Jun 29, 3:58 pm, "House n @ MIT" <[email protected]> wrote: > > > > Hello, > > > I've been doing some testing on the accelerometer, specifically with > > > the old SensorListener and new SensorEventListener versions available > > > as of Cupcake. > > > > Using SensorListener, I've been getting normal acceleration values as > > > expected according to the documentation - around 9.8 on the axis in > > > line with gravity when sitting still. When I upgraded the code to > > > SensorEventListener, that number jumped to around 30, which is not > > > consistent with the documentation. I've tried sampling at different > > > rates, but generally I've been using game mode, since that's the rate > > > I ultimately intend to use. > > > > I'd be interested to hear if anyone has seen this behavior, has any > > > ideas about it, or sees an issue with the code below. Give it a test > > > run yourself. It might be relevant to note that the > > > SensorEvent.accuracy is SENSOR_STATUS_ACCURACY_HIGH. > > > > When I run this code with the phone sitting flat on a table, screen, > > > up, I get values like these: > > > > x: 12.5625 y: 20.8125 z: -16.4375 > > > > //////////////////////////////////////////////////////////////////// > > > > package edu.accel; > > > > import java.io.File; > > > import java.io.FileNotFoundException; > > > import java.io.FileOutputStream; > > > import java.io.PrintWriter; > > > import java.util.List; > > > > import android.app.Activity; > > > import android.content.Context; > > > import android.hardware.Sensor; > > > import android.hardware.SensorEvent; > > > import android.hardware.SensorEventListener; > > > import android.hardware.SensorManager; > > > import android.os.Bundle; > > > > public class AccelTest extends Activity { > > > > private SensorManager mSensorManager; > > > > @Override > > > public void onCreate(Bundle savedInstanceState) { > > > super.onCreate(savedInstanceState); > > > setContentView(R.layout.main); > > > > // Set up the accelerometer reading > > > mSensorManager = (SensorManager)getSystemService > > > (Context.SENSOR_SERVICE); > > > // Get the list of all sensors, and find the accelerometer > > > within > > > List<Sensor> sensorList = mSensorManager.getSensorList > > > (SensorManager.SENSOR_ACCELEROMETER); > > > > mSensorManager.registerListener(mSensorListener, > > > sensorList.get(0), > > > SensorManager.SENSOR_DELAY_UI); > > > > } > > > > //Accelerometer > > > private final SensorEventListener mSensorListener = new > > > SensorEventListener() { > > > > private PrintWriter mCurrentFile; > > > > boolean never = true; > > > String comma = new String(","); > > > > public void runOnce() > > > { > > > //Creating a file to print the data into > > > > String nameStr = new String("/sdcard/10 second trials.xls"); > > > File outputFile = new File(nameStr); > > > mCurrentFile = null; > > > try { > > > mCurrentFile = new PrintWriter(new > > > FileOutputStream(outputFile)); > > > } catch (FileNotFoundException e) { > > > // TODO Auto-generated catch block > > > e.printStackTrace(); > > > } > > > > } > > > > @Override > > > public void onAccuracyChanged(Sensor sensor, int > > > accuracy) { > > > // TODO Auto-generated method stub > > > > } > > > > @Override > > > public void onSensorChanged(SensorEvent event) { > > > > if (never) > > > { > > > never = false; > > > runOnce(); > > > } > > > StringBuffer buff = new StringBuffer(); > > > buff.append(String.valueOf(event.values[0])); > > > buff.append(comma); > > > buff.append(String.valueOf(event.values[1])); > > > buff.append(comma); > > > buff.append(String.valueOf(event.values[2])); > > > mCurrentFile.println(buff.toString()); > > > } > > > }; > > > > } --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. 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