> 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... Peli www.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. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
