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/******************************************************************************* * Copyright (c) 2014 IBM Corp./*from ww w . j a v a2 s . c o m*/ * * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * and Eclipse Distribution License v1.0 which accompany this distribution. * * The Eclipse Public License is available at * http://www.eclipse.org/legal/epl-v10.html * and the Eclipse Distribution License is available at * http://www.eclipse.org/org/documents/edl-v10.php. * * Contributors: * Mike Robertson - initial contribution *******************************************************************************/ package com.ibm.demo.IoTStarter.utils; import android.content.Context; import android.content.Intent; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; import android.util.Log; import com.ibm.demo.IoTStarter.IoTStarterApplication; import com.ibm.demo.IoTStarter.fragments.IoTFragment; import java.util.Timer; import java.util.TimerTask; /** * This class implements the SensorEventListener interface. When the application creates the MQTT * connection, it registers listeners for the accelerometer and magnetometer sensors. * Output from these sensors is used to publish accel event messages. */ public class DeviceSensor implements SensorEventListener { private final String TAG = DeviceSensor.class.getName(); private static DeviceSensor instance; private IoTStarterApplication app; private SensorManager sensorManager; private Sensor accelerometer; private Sensor magnetometer; private Context context; private Timer timer; private boolean isEnabled = false; public DeviceSensor(Context context) { this.context = context; sensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE); accelerometer = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER); magnetometer = sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD); app = (IoTStarterApplication) context.getApplicationContext(); } /** * @param context The application context for the object. * @return The MqttHandler object for the application. */ public static DeviceSensor getInstance(Context context) { if (instance == null) { Log.i(DeviceSensor.class.getName(), "Creating new DeviceSensor"); instance = new DeviceSensor(context); } return instance; } /** * Register the listeners for the sensors the application is interested in. */ public void enableSensor() { Log.i(TAG, ".enableSensor() entered"); if (isEnabled == false) { sensorManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_NORMAL); sensorManager.registerListener(this, magnetometer, SensorManager.SENSOR_DELAY_NORMAL); timer = new Timer(); timer.scheduleAtFixedRate(new SendTimerTask(), 1000, 1000); isEnabled = true; } } /** * Disable the listeners. */ public void disableSensor() { Log.d(TAG, ".disableSensor() entered"); if (timer != null && isEnabled) { timer.cancel(); sensorManager.unregisterListener(this); isEnabled = false; } } // Values used for accelerometer, magnetometer, orientation sensor data float G[] = new float[3]; // gravity x,y,z float M[] = new float[3]; // geomagnetic field x,y,z float R[] = new float[9]; // rotation matrix float I[] = new float[9]; // inclination matrix float O[] = new float[3]; // orientation azimuth, pitch, roll float previousO[] = new float[3]; // orientation azimuth, pitch, roll float yaw; /** * Callback for processing data from the registered sensors. Accelerometer and magnetometer * data are used together to get orientation data. * * @param sensorEvent The event containing the sensor data values. */ @Override public void onSensorChanged(SensorEvent sensorEvent) { Log.v(TAG, "onSensorChanged() entered"); if (sensorEvent.sensor.getType() == Sensor.TYPE_ACCELEROMETER) { Log.v(TAG, "Accelerometer -- x: " + sensorEvent.values[0] + " y: " + sensorEvent.values[1] + " z: " + sensorEvent.values[2]); G = sensorEvent.values; } else if (sensorEvent.sensor.getType() == Sensor.TYPE_MAGNETIC_FIELD) { Log.v(TAG, "Magnetometer -- x: " + sensorEvent.values[0] + " y: " + sensorEvent.values[1] + " z: " + sensorEvent.values[2]); M = sensorEvent.values; } if (G != null && M != null) { if (sensorManager.getRotationMatrix(R, I, G, M)) { previousO = O.clone(); O = sensorManager.getOrientation(R, O); yaw = O[0] - previousO[0]; Log.v(TAG, "Orientation: azimuth: " + O[0] + " pitch: " + O[1] + " roll: " + O[2] + " yaw: " + yaw); } } } /** * Callback for the SensorEventListener interface. Unused. * * @param sensor The sensor that changed. * @param i The change in accuracy for the sensor. */ @Override public void onAccuracyChanged(Sensor sensor, int i) { Log.d(TAG, "onAccuracyChanged() entered"); } /** * Timer task for sending accel data on 1000ms intervals */ private class SendTimerTask extends TimerTask { /** * Publish an accel event message. */ @Override public void run() { Log.v(TAG, "SendTimerTask.run() entered"); double lon = 0.0; double lat = 0.0; if (app.getCurrentLocation() != null) { lon = app.getCurrentLocation().getLongitude(); lat = app.getCurrentLocation().getLatitude(); } String messageData = MessageFactory.getAccelMessage(G, O, yaw, lon, lat); String topic; if (app.getConnectionType() == Constants.ConnectionType.QUICKSTART) { topic = TopicFactory.getEventTopic(Constants.STATUS_EVENT); } else { topic = TopicFactory.getEventTopic(Constants.ACCEL_EVENT); } MqttHandler mqttHandler = MqttHandler.getInstance(context); mqttHandler.publish(topic, messageData, false, 0); app.setAccelData(G); String runningActivity = app.getCurrentRunningActivity(); if (runningActivity != null && runningActivity.equals(IoTFragment.class.getName())) { Intent actionIntent = new Intent(Constants.APP_ID + Constants.INTENT_IOT); actionIntent.putExtra(Constants.INTENT_DATA, Constants.ACCEL_EVENT); context.sendBroadcast(actionIntent); } } } }