├── AndroidApp
├── .classpath
├── .gitignore
├── .project
├── .settings
│ └── org.eclipse.jdt.core.prefs
├── AndroidManifest.xml
├── ant.properties
├── build.xml
├── ic_launcher-web.png
├── libs
│ ├── android-support-v4.jar
│ ├── gson-2.3.jar
│ ├── okhttp-2.0.0.jar
│ └── okio-1.0.1.jar
├── proguard-project.txt
├── project.properties
├── res
│ ├── drawable-hdpi
│ │ └── ic_launcher.png
│ ├── drawable-mdpi
│ │ └── ic_launcher.png
│ ├── drawable-xhdpi
│ │ └── ic_launcher.png
│ ├── drawable-xxhdpi
│ │ └── ic_launcher.png
│ ├── layout
│ │ ├── activity_main.xml
│ │ └── list_item_wifi.xml
│ ├── values-v14
│ │ └── styles.xml
│ └── values
│ │ ├── location_names.xml
│ │ ├── strings.xml
│ │ ├── styles.xml
│ │ └── urls.xml
└── src
│ └── com
│ └── zackaryscholl
│ └── wifilocation
│ └── scanner
│ ├── ScanActivity.java
│ ├── UploadService.java
│ ├── ViewResultsActivity.java
│ ├── WifiPoint.java
│ └── WifiScanApplication.java
├── LICENSE
├── README.md
└── RaspberryPi
├── calculatePriors.py
├── databasecommands.py
├── db
└── data.db
├── dbsetup.py
├── index.html
├── server.py
├── server_com.py
└── update.php
/AndroidApp/.classpath:
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/AndroidApp/.gitignore:
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1 | *.class
2 | bin
3 | gen
4 | *.jar.properties
5 | local.properties
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/AndroidApp/.project:
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3 | WifiLocationAndroid
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/AndroidApp/.settings/org.eclipse.jdt.core.prefs:
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1 | eclipse.preferences.version=1
2 | org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
3 | org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.7
4 | org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
5 | org.eclipse.jdt.core.compiler.compliance=1.7
6 | org.eclipse.jdt.core.compiler.debug.lineNumber=generate
7 | org.eclipse.jdt.core.compiler.debug.localVariable=generate
8 | org.eclipse.jdt.core.compiler.debug.sourceFile=generate
9 | org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
10 | org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
11 | org.eclipse.jdt.core.compiler.source=1.7
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/AndroidApp/AndroidManifest.xml:
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/AndroidApp/ant.properties:
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1 | application.package=com.zackaryscholl.wifilocation.scanner
2 | java.target=1.7
3 | java.source=1.7
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/AndroidApp/build.xml:
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/AndroidApp/ic_launcher-web.png:
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https://raw.githubusercontent.com/jschools/wifi_triangulation/760d1bea776394c362cb437f4a5b32d47f383365/AndroidApp/ic_launcher-web.png
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/AndroidApp/libs/android-support-v4.jar:
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https://raw.githubusercontent.com/jschools/wifi_triangulation/760d1bea776394c362cb437f4a5b32d47f383365/AndroidApp/libs/android-support-v4.jar
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/AndroidApp/libs/gson-2.3.jar:
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https://raw.githubusercontent.com/jschools/wifi_triangulation/760d1bea776394c362cb437f4a5b32d47f383365/AndroidApp/libs/gson-2.3.jar
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/AndroidApp/libs/okhttp-2.0.0.jar:
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https://raw.githubusercontent.com/jschools/wifi_triangulation/760d1bea776394c362cb437f4a5b32d47f383365/AndroidApp/libs/okhttp-2.0.0.jar
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/AndroidApp/libs/okio-1.0.1.jar:
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https://raw.githubusercontent.com/jschools/wifi_triangulation/760d1bea776394c362cb437f4a5b32d47f383365/AndroidApp/libs/okio-1.0.1.jar
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/AndroidApp/proguard-project.txt:
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1 | # To enable ProGuard in your project, edit project.properties
2 | # to define the proguard.config property as described in that file.
3 | #
4 | # Add project specific ProGuard rules here.
5 | # By default, the flags in this file are appended to flags specified
6 | # in ${sdk.dir}/tools/proguard/proguard-android.txt
7 | # You can edit the include path and order by changing the ProGuard
8 | # include property in project.properties.
9 | #
10 | # For more details, see
11 | # http://developer.android.com/guide/developing/tools/proguard.html
12 |
13 | # Add any project specific keep options here:
14 |
15 | # If your project uses WebView with JS, uncomment the following
16 | # and specify the fully qualified class name to the JavaScript interface
17 | # class:
18 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
19 | # public *;
20 | #}
21 |
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/AndroidApp/project.properties:
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1 | # This file is automatically generated by Android Tools.
2 | # Do not modify this file -- YOUR CHANGES WILL BE ERASED!
3 | #
4 | # This file must be checked in Version Control Systems.
5 | #
6 | # To customize properties used by the Ant build system edit
7 | # "ant.properties", and override values to adapt the script to your
8 | # project structure.
9 | #
10 | # To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
11 | #proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
12 |
13 | # Project target.
14 | target=android-20
15 |
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/AndroidApp/res/drawable-hdpi/ic_launcher.png:
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https://raw.githubusercontent.com/jschools/wifi_triangulation/760d1bea776394c362cb437f4a5b32d47f383365/AndroidApp/res/drawable-hdpi/ic_launcher.png
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/AndroidApp/res/drawable-mdpi/ic_launcher.png:
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https://raw.githubusercontent.com/jschools/wifi_triangulation/760d1bea776394c362cb437f4a5b32d47f383365/AndroidApp/res/drawable-mdpi/ic_launcher.png
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/AndroidApp/res/drawable-xhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/jschools/wifi_triangulation/760d1bea776394c362cb437f4a5b32d47f383365/AndroidApp/res/drawable-xhdpi/ic_launcher.png
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/AndroidApp/res/drawable-xxhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/jschools/wifi_triangulation/760d1bea776394c362cb437f4a5b32d47f383365/AndroidApp/res/drawable-xxhdpi/ic_launcher.png
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/AndroidApp/res/layout/activity_main.xml:
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/AndroidApp/res/layout/list_item_wifi.xml:
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/AndroidApp/res/values-v14/styles.xml:
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/AndroidApp/res/values/location_names.xml:
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9 | Room 0
10 | Room 1
11 | Room 2
12 | Room 3
13 | Room 4
14 | Room 5
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/AndroidApp/res/values/strings.xml:
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3 | WiFi Scanner
4 | %1$,d data points collected
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/AndroidApp/res/values/urls.xml:
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/AndroidApp/src/com/zackaryscholl/wifilocation/scanner/ScanActivity.java:
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1 | package com.zackaryscholl.wifilocation.scanner;
2 |
3 | import java.util.ArrayList;
4 | import java.util.List;
5 |
6 | import android.app.Activity;
7 | import android.content.BroadcastReceiver;
8 | import android.content.Context;
9 | import android.content.Intent;
10 | import android.content.IntentFilter;
11 | import android.net.wifi.ScanResult;
12 | import android.net.wifi.WifiManager;
13 | import android.os.Bundle;
14 | import android.os.Handler;
15 | import android.support.v4.content.LocalBroadcastManager;
16 | import android.view.View;
17 | import android.view.View.OnClickListener;
18 | import android.view.Window;
19 | import android.widget.AdapterView;
20 | import android.widget.AdapterView.OnItemSelectedListener;
21 | import android.widget.Spinner;
22 | import android.widget.TextView;
23 | import android.widget.Toast;
24 |
25 | public class ScanActivity extends Activity implements OnClickListener, OnItemSelectedListener {
26 |
27 | private static final String KEY_POINTS = "points";
28 | private static final String KEY_LOCATION = "location";
29 |
30 | private static final int SOFT_UPLOAD_LIMIT_KB = 2 * 1024; // cap out around 2MB
31 | private static final int APPROX_MEASUREMENT_SIZE_B = 90;
32 | private static final int SOFT_COUNT_LIMIT = (SOFT_UPLOAD_LIMIT_KB * 1024) / APPROX_MEASUREMENT_SIZE_B;
33 |
34 | private boolean mScanning;
35 | private boolean mUploading;
36 |
37 | private int mLocation;
38 |
39 | private Handler mHandler;
40 | private ArrayList mPoints;
41 | private final CountAnimator mCountAnimator = new CountAnimator();
42 |
43 | private static final IntentFilter WIFI_FILTER = new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);
44 | private static final IntentFilter UPLOAD_FILTER = new IntentFilter(UploadService.ACTION_UPLOAD_COMPLETE);
45 | private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
46 | @Override
47 | public void onReceive(Context context, Intent intent) {
48 | switch (intent.getAction()) {
49 | case WifiManager.SCAN_RESULTS_AVAILABLE_ACTION:
50 | appendScanResults();
51 | break;
52 | case UploadService.ACTION_UPLOAD_COMPLETE:
53 | int count = intent.getIntExtra(UploadService.EXTRA_NUM_POINTS, -1);
54 | Toast.makeText(ScanActivity.this, "Server processed " + count + " points", Toast.LENGTH_SHORT).show();
55 | mUploading = false;
56 | updateUiState();
57 | break;
58 | default:
59 | break;
60 | }
61 | }
62 | };
63 |
64 | @Override
65 | protected void onSaveInstanceState(Bundle outState) {
66 | outState.putParcelableArrayList(KEY_POINTS, mPoints);
67 | outState.putInt(KEY_LOCATION, mLocation);
68 | }
69 |
70 | @Override
71 | protected void onCreate(Bundle savedInstanceState) {
72 | super.onCreate(savedInstanceState);
73 |
74 | requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
75 | setContentView(R.layout.activity_main);
76 |
77 | setProgressBarIndeterminate(true);
78 | setProgressBarIndeterminateVisibility(false);
79 |
80 | if (savedInstanceState != null) {
81 | mPoints = savedInstanceState.getParcelableArrayList(KEY_POINTS);
82 | mLocation = savedInstanceState.getInt(KEY_LOCATION, 0);
83 | }
84 |
85 | if (mPoints == null) {
86 | mPoints = new ArrayList();
87 | }
88 | mCountAnimator.setDisplayedCount(mPoints.size());
89 |
90 | mHandler = new Handler();
91 |
92 | Spinner locationSpinner = (Spinner) findViewById(R.id.spinner_location);
93 | locationSpinner.setSelection(Math.min(mLocation, locationSpinner.getCount()));
94 | locationSpinner.setOnItemSelectedListener(this);
95 |
96 | findViewById(R.id.btn_start).setOnClickListener(this);
97 | findViewById(R.id.btn_stop).setOnClickListener(this);
98 | findViewById(R.id.btn_upload).setOnClickListener(this);
99 | findViewById(R.id.btn_clear).setOnClickListener(this);
100 | findViewById(R.id.btn_view).setOnClickListener(this);
101 |
102 | mScanning = false;
103 | mUploading = false;
104 | }
105 |
106 | @Override
107 | protected void onResume() {
108 | super.onResume();
109 |
110 | updateUiState();
111 |
112 | registerReceiver(mReceiver, WIFI_FILTER);
113 | LocalBroadcastManager.getInstance(getApplicationContext()).registerReceiver(mReceiver, UPLOAD_FILTER);
114 | }
115 |
116 | @Override
117 | protected void onPause() {
118 | super.onPause();
119 |
120 | stopScanning();
121 | mHandler.removeCallbacksAndMessages(null);
122 |
123 | unregisterReceiver(mReceiver);
124 | LocalBroadcastManager.getInstance(getApplicationContext()).unregisterReceiver(mReceiver);
125 | }
126 |
127 | @Override
128 | public void onClick(View v) {
129 | switch (v.getId()) {
130 | case R.id.btn_start:
131 | startScanning();
132 | break;
133 | case R.id.btn_stop:
134 | stopScanning();
135 | break;
136 | case R.id.btn_upload:
137 | uploadResults();
138 | break;
139 | case R.id.btn_clear:
140 | clearResults();
141 | break;
142 | case R.id.btn_view:
143 | viewResults();
144 | break;
145 | default:
146 | break;
147 | }
148 | }
149 |
150 | @Override
151 | public void onItemSelected(AdapterView parent, View view, int position, long id) {
152 | mLocation = position;
153 | }
154 |
155 | @Override
156 | public void onNothingSelected(AdapterView parent) {
157 | // don't care
158 | }
159 |
160 | private void startScanning() {
161 | mScanning = true;
162 | mHandler.post(mScanRunnable);
163 |
164 | updateUiState();
165 | }
166 |
167 | private void stopScanning() {
168 | mScanning = false;
169 | mHandler.removeCallbacks(mScanRunnable);
170 |
171 | updateUiState();
172 | }
173 |
174 | private void clearResults() {
175 | stopScanning();
176 | mPoints.clear();
177 |
178 | updateUiState();
179 | }
180 |
181 | private void uploadResults() {
182 | stopScanning();
183 |
184 | UploadService.startUpload(new ArrayList<>(mPoints));
185 | mUploading = true;
186 | TextView uploadedCountView = (TextView) findViewById(R.id.uploaded_count);
187 | String message = "Uploading " + mPoints.size() + " data points...";
188 | uploadedCountView.setText(message);
189 |
190 | clearResults();
191 |
192 | updateUiState();
193 | }
194 |
195 | private void viewResults() {
196 | Intent intent = new Intent(this, ViewResultsActivity.class);
197 | intent.putExtra(ViewResultsActivity.EXTA_POINTS, mPoints);
198 | startActivity(intent);
199 | }
200 |
201 | private void updateUiState() {
202 | setProgressBarIndeterminateVisibility(mScanning || mUploading);
203 | findViewById(R.id.spinner_location).setEnabled(!mScanning);
204 | findViewById(R.id.btn_start).setEnabled(!mScanning && !mUploading);
205 | findViewById(R.id.btn_stop).setEnabled(mScanning);
206 | findViewById(R.id.btn_upload).setEnabled(!mScanning && !mUploading && !mPoints.isEmpty());
207 | findViewById(R.id.btn_clear).setEnabled(!mScanning && !mUploading && !mPoints.isEmpty());
208 | findViewById(R.id.uploaded_count).setVisibility(mUploading ? View.VISIBLE : View.GONE);
209 | findViewById(R.id.btn_view).setEnabled(!mScanning && !mUploading && !mPoints.isEmpty());
210 | startAnimatedProgressUpdate();
211 | }
212 |
213 | private void appendScanResults() {
214 | if (!mScanning) {
215 | return;
216 | }
217 |
218 | WifiManager mgr = (WifiManager) getSystemService(WIFI_SERVICE);
219 | List results = mgr.getScanResults();
220 |
221 | long time = System.currentTimeMillis() / 1000;
222 | for (ScanResult scanResult : results) {
223 | mPoints.add(new WifiPoint(scanResult, mLocation, time));
224 | }
225 |
226 | if (mPoints.size() > SOFT_COUNT_LIMIT) {
227 | Toast.makeText(this, "Upload size of " + SOFT_UPLOAD_LIMIT_KB + "kB reached", Toast.LENGTH_SHORT).show();
228 | stopScanning();
229 | }
230 |
231 | startAnimatedProgressUpdate();
232 | }
233 |
234 | private void startAnimatedProgressUpdate() {
235 | mCountAnimator.run();
236 | }
237 |
238 | private class CountAnimator implements Runnable {
239 | private int mDisplayedCount = 0;
240 |
241 | public void setDisplayedCount(int displayedCount) {
242 | mDisplayedCount = displayedCount;
243 | updateProgress(mDisplayedCount);
244 | }
245 |
246 | @Override
247 | public void run() {
248 | mHandler.removeCallbacks(this);
249 |
250 | updateProgress(mDisplayedCount);
251 | final int mPointCount = mPoints.size();
252 | if (mDisplayedCount != mPointCount) {
253 | if (mDisplayedCount < mPoints.size()) {
254 | mDisplayedCount++;
255 | }
256 | else {
257 | mDisplayedCount = Math.max(mPointCount, mDisplayedCount / 2);
258 | }
259 | mHandler.postDelayed(this, 30);
260 | }
261 | }
262 |
263 | private void updateProgress(int dataPointCount) {
264 | String text = getString(R.string.fmt_data_points_collected, Integer.valueOf(dataPointCount));
265 | ((TextView) findViewById(R.id.collected_count)).setText(text);
266 | }
267 | }
268 |
269 | private final Runnable mScanRunnable = new Runnable() {
270 | @Override
271 | public void run() {
272 | mHandler.removeCallbacks(this);
273 |
274 | WifiManager mgr = (WifiManager) getSystemService(WIFI_SERVICE);
275 | boolean started = mgr.startScan();
276 |
277 | if (!started) {
278 | Toast.makeText(ScanActivity.this, "WiFi scan failed to start", Toast.LENGTH_SHORT).show();
279 | stopScanning();
280 | }
281 | else {
282 | mHandler.postDelayed(this, 500);
283 | }
284 | }
285 | };
286 |
287 | }
288 |
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/AndroidApp/src/com/zackaryscholl/wifilocation/scanner/UploadService.java:
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1 | package com.zackaryscholl.wifilocation.scanner;
2 |
3 | import java.util.ArrayList;
4 | import java.util.List;
5 |
6 | import android.app.IntentService;
7 | import android.content.Context;
8 | import android.content.Intent;
9 | import android.support.v4.content.LocalBroadcastManager;
10 |
11 | import com.google.gson.Gson;
12 | import com.squareup.okhttp.MediaType;
13 | import com.squareup.okhttp.OkHttpClient;
14 | import com.squareup.okhttp.Request;
15 | import com.squareup.okhttp.RequestBody;
16 | import com.squareup.okhttp.Response;
17 |
18 | public class UploadService extends IntentService {
19 |
20 | public static final String SERVICE_NAME = UploadService.class.getSimpleName();
21 |
22 | private static final String ACTION_UPLOAD = "UploadService.ACTION_UPLOAD";
23 | private static final String EXTRA_POINTS = "points";
24 | public static final String ACTION_UPLOAD_COMPLETE = "UploadService.ACTION_UPLOAD_COMPLETE";
25 | public static final String EXTRA_NUM_POINTS = "numPoints";
26 |
27 | public static void startUpload(List points) {
28 | Context context = WifiScanApplication.getInstance();
29 |
30 | Intent intent = new Intent(context, UploadService.class);
31 | intent.setAction(ACTION_UPLOAD);
32 |
33 | ArrayList arrayList;
34 | if (points instanceof ArrayList) {
35 | arrayList = (ArrayList) points;
36 | }
37 | else {
38 | arrayList = new ArrayList<>(points);
39 | }
40 | intent.putParcelableArrayListExtra(EXTRA_POINTS, arrayList);
41 |
42 | context.startService(intent);
43 | }
44 |
45 | public UploadService() {
46 | super(SERVICE_NAME);
47 | }
48 |
49 | @Override
50 | protected void onHandleIntent(Intent intent) {
51 | switch (intent.getAction()) {
52 | case ACTION_UPLOAD:
53 | handleUpload(intent);
54 | break;
55 | default:
56 | break;
57 | }
58 | }
59 |
60 | private void handleUpload(Intent intent) {
61 | final String url = getString(R.string.url_upload);
62 | final List points = intent.getParcelableArrayListExtra(EXTRA_POINTS);
63 | final String json = new Gson().toJson(points);
64 |
65 | RequestBody body = RequestBody.create(MediaType.parse("application/json"), json);
66 |
67 | Request.Builder builder = new Request.Builder();
68 | builder.url(url).post(body);
69 | Request request = builder.build();
70 |
71 | OkHttpClient client = new OkHttpClient();
72 | try {
73 | Response response = client.newCall(request).execute();
74 | final int code = response.code();
75 | if (code == 200) {
76 | final String responseBody = response.body().string();
77 | int count = Integer.parseInt(responseBody);
78 | broadcastCompletion(count);
79 | return;
80 | }
81 | }
82 | catch (Exception e) {
83 | e.printStackTrace();
84 | }
85 |
86 | broadcastCompletion(-1);
87 | }
88 |
89 | private static void broadcastCompletion(int count) {
90 | Intent intent = new Intent(ACTION_UPLOAD_COMPLETE);
91 | intent.putExtra(EXTRA_NUM_POINTS, count);
92 | LocalBroadcastManager.getInstance(WifiScanApplication.getInstance()).sendBroadcast(intent);
93 | }
94 |
95 | }
96 |
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/AndroidApp/src/com/zackaryscholl/wifilocation/scanner/ViewResultsActivity.java:
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1 | package com.zackaryscholl.wifilocation.scanner;
2 |
3 | import java.util.List;
4 |
5 | import android.app.ListActivity;
6 | import android.content.Context;
7 | import android.os.Bundle;
8 | import android.view.LayoutInflater;
9 | import android.view.View;
10 | import android.view.ViewGroup;
11 | import android.widget.ArrayAdapter;
12 | import android.widget.TextView;
13 |
14 | public class ViewResultsActivity extends ListActivity {
15 |
16 | public static final String EXTA_POINTS = ViewResultsActivity.class.getName() + ".EXTRA_POINTS";
17 |
18 | private List mPoints;
19 |
20 | @Override
21 | protected void onCreate(Bundle savedInstanceState) {
22 | super.onCreate(savedInstanceState);
23 |
24 | mPoints = getIntent().getParcelableArrayListExtra(EXTA_POINTS);
25 | setListAdapter(new WifiPointAdapter(this, mPoints));
26 | }
27 |
28 | private static class WifiPointAdapter extends ArrayAdapter {
29 |
30 | public WifiPointAdapter(Context context, List objects) {
31 | super(context, R.layout.list_item_wifi, objects);
32 | }
33 |
34 | @Override
35 | public View getView(int position, View convertView, ViewGroup parent) {
36 | View v = convertView;
37 | ViewHolder holder;
38 | if (v == null) {
39 | v = LayoutInflater.from(getContext()).inflate(R.layout.list_item_wifi, parent, false);
40 | holder = new ViewHolder(v);
41 | v.setTag(holder);
42 | }
43 | else {
44 | holder = (ViewHolder) v.getTag();
45 | }
46 |
47 | final WifiPoint point = getItem(position);
48 | holder.position.setText(Integer.toString(position));
49 | holder.mac.setText("MAC: " + point.macAddress);
50 | holder.rssi.setText("RSSI: " + point.rssi);
51 | holder.location.setText("Location: " + point.location);
52 |
53 | return v;
54 | }
55 |
56 | private static class ViewHolder {
57 | public final TextView position;
58 | public final TextView mac;
59 | public final TextView rssi;
60 | public final TextView location;
61 |
62 | public ViewHolder(View v) {
63 | position = (TextView) v.findViewById(R.id.position);
64 | mac = (TextView) v.findViewById(R.id.mac);
65 | rssi = (TextView) v.findViewById(R.id.rssi);
66 | location = (TextView) v.findViewById(R.id.location);
67 | }
68 | }
69 |
70 | }
71 | }
72 |
--------------------------------------------------------------------------------
/AndroidApp/src/com/zackaryscholl/wifilocation/scanner/WifiPoint.java:
--------------------------------------------------------------------------------
1 | package com.zackaryscholl.wifilocation.scanner;
2 |
3 | import android.net.wifi.ScanResult;
4 | import android.os.Parcel;
5 | import android.os.Parcelable;
6 |
7 | import com.google.gson.annotations.SerializedName;
8 |
9 | public class WifiPoint implements Parcelable {
10 |
11 | @SerializedName("mac")
12 | public final String macAddress;
13 |
14 | @SerializedName("rssi")
15 | public final int rssi;
16 |
17 | @SerializedName("room")
18 | public final int location;
19 |
20 | @SerializedName("time")
21 | public final long timestamp;
22 |
23 | public WifiPoint(ScanResult scanResult, int location, long time) {
24 | macAddress = scanResult.BSSID;
25 | rssi = scanResult.level;
26 | this.location = location;
27 | timestamp = time;
28 | }
29 |
30 | @Override
31 | public int describeContents() {
32 | return 0;
33 | }
34 |
35 | @Override
36 | public void writeToParcel(Parcel dest, int flags) {
37 | dest.writeString(macAddress);
38 | dest.writeInt(rssi);
39 | dest.writeInt(location);
40 | dest.writeLong(timestamp);
41 | }
42 |
43 | private WifiPoint(Parcel in) {
44 | macAddress = in.readString();
45 | rssi = in.readInt();
46 | location = in.readInt();
47 | timestamp = in.readLong();
48 | }
49 |
50 | public static final Creator CREATOR = new Creator() {
51 | @Override
52 | public WifiPoint createFromParcel(Parcel source) {
53 | return new WifiPoint(source);
54 | }
55 |
56 | @Override
57 | public WifiPoint[] newArray(int size) {
58 | return new WifiPoint[size];
59 | }
60 |
61 | };
62 |
63 | }
64 |
--------------------------------------------------------------------------------
/AndroidApp/src/com/zackaryscholl/wifilocation/scanner/WifiScanApplication.java:
--------------------------------------------------------------------------------
1 | package com.zackaryscholl.wifilocation.scanner;
2 |
3 | import android.app.Application;
4 |
5 | public class WifiScanApplication extends Application {
6 |
7 | private static WifiScanApplication sInstance;
8 |
9 | @Override
10 | public void onCreate() {
11 | super.onCreate();
12 |
13 | sInstance = this;
14 | }
15 |
16 | public static WifiScanApplication getInstance() {
17 | return sInstance;
18 | }
19 | }
20 |
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | wifi_triangulation
2 | ==================
3 |
4 | Uses Android phone and Raspberry Pi for an adhoc Internal Positioning System with ~10ft resolution
5 |
6 | ###### Please note that this setup as described is supposed to be a proof of principle. It is far from polished. What I attempt here serves as a springboard for further development. My goals here were determine 1) Does WiFi triangulation work at all? 2) What is the best application if Bayes Theorem (prior and posteriors)? 3) What sort of resolution and accuracy can be determined? I think I've answered these questions as you read.
7 |
8 | # Requirements
9 |
10 | - ~~Matlab with [mqsqlite](http://sourceforge.net/projects/mksqlite/)~~ (08/30/14: Python does all this now!)
11 | - Python+SQLite (I hope to remove this dependency eventually)
12 | - Android SDK
13 | - ~~[Tasker for Android](http://tasker.dinglisch.net/)~~ (08/30/14: Android App can do this now!)
14 |
15 |
16 | # Future development
17 |
18 | - ~~Use Python instead of Matlab to determine the fixed Posterior distributions and off load almost everything to the Raspberry Pi~~ **Made possible using simpler (and just as effective) prior calculation scheme**
19 | - ~~Make the Android app more friendly and not reliant on Tasker~~ **Thank you [jschools](https://github.com/jschools)**
20 | - Allow Android to collect data in the background
21 | - Ability to change URL in AndroidApp
22 | - Eventually make entire process self contained in an Android app (Sqlite database, building priors, and posterior calculation)
23 | - Markov model for better location matching
24 |
25 | # Short term to-do
26 |
27 | - Get rid of redundant data (priors of mac addresses)
28 |
29 | # Acknowledgements
30 |
31 | Thanks to Travis provided all the database code for Python and helped me get all of that started. Thanks to [jschools](https://github.com/jschools) got the android app and php uploading working!
32 |
33 |
34 | # Background Information
35 |
36 | ## Implementation
37 |
38 | Basically this relies on you walking to a designated location and waiting for 10minutes while devices collect information about the WiFi networks and strengths at that spot. Once all the locations have been "learned" then it simply calculates the Bayesian probability of location X given a WiFi signal from router Y with signal Z. It does this using Bayes' theorem:
39 |
40 | 
41 |
42 | In this case, since there are Y routers and X locations, we use version of Bayes' theorem with multiple observations:
43 |
44 | 
45 |
48 |
49 | which can be simplifed (for computational reasons) using the Log-likelihood:
50 |
51 | 
52 |
53 |
56 |
57 |
58 | I'll go over how I implemented this code using my apartment as an example
59 |
60 | ## Learning locations
61 |
62 | My apartment is almost exactly 1,000 sq ft. I divided my apartment into 8 frequented locations (shown by yellow circles):
63 |
64 | 
65 |
66 | The first task is to aquire several hundred scans of all the WiFi networks and save them to a database. I have a roundabout way of doing this, hopefully to be improved in the future.
67 |
68 | I've used an SQLite database on the Raspberry Pi to store all the variables ```db/data.db```. The database was created using Python scripts ```dbsetup.py``` written by Travis. Records are inserted one at a time using a PHP script, ```update.php```. This PHP script has three inputs: MAC address, signal strength, location number (0 if not known) which are presented comma-delimited into the loc variable (i.e. ```http://blahblahblah/update.php?loc=3d:ma:c3:ad:d3,-54,1```.
69 |
70 | The WiFi information is gathered from my Android device - a Droid DNA phone. I wrote a *really* simple App (```My First App```) which simply writes to a file all of the MAC addresses and signal strengths, pipe-delimited. I wish I was smart enough to write the app to do this for a few minutes and goto the webaddress above to insert the records, but I'm not. So instead I used [Tasker](Tasker url) which does the following loop: 1) Run my stupid App, 2) Read file with MAC address and signal strength, 3) Open URL to update the Raspbery Pi database with each MAC address in file, 4) Go back to 1) a 100 times. That's it. I just go to every location in my apartment, tell the Tasker handler which room I'm in and let it run for awhile. After doing this for each location, the database is populated and ready for determining Bayesion probabilties
71 |
72 | ### Determining Bayesian probabilities
73 |
74 | These distributions depend on the WiFi strength signals. I initialliy tried using Gaussian mixture models, but found a much simpler and effective way is to just estimate the probabilities by the number of events at a given RSSI divided by the total number of events. This costs more overhead, but its not much more and its insignificant as long as your not polling thousands of locations.
75 |
76 | Example of some distriubtions are here:
77 |
78 | 
79 |
80 | I used small Gaussians to make up the final model which is why it looks smooth. You can see here, even from an example with two locations ~10ft apart (Room 1 and Room 2) there is a substantial difference between the probabilities for a given room AND MAC address (blue and green). The prior for the distribution of the MAC address only (red) is essentially all possible probabilities.
81 |
82 | ### Simulations
83 |
84 | Here are some simulations from real data. This code essential picks a room and then picks random signals from that room and tests how often it is correct. In general, this method is accurate **>95%** of the time. There are some places it does better than others, but good overall:
85 |
86 | 
87 |
88 |
89 | # Step-by-step guide to implementation
90 |
91 | **In progress**
92 |
93 | 0. This project really works well with a Raspbery Pi. Get one and install python and sqlite3. I believe its fine if you use the local network, but make sure to forward Port 9003 so the websockets will work. Put the ```RaspberryPi``` files in your public html folder, ```/var/www/```.
94 |
95 | 1. First run ```dbsetup.py``` to set up the table.
96 |
97 | 2. Use the Android app now, pointing the app towards your URL of ```update.php```. Walk around to each room and collect some data points and upload them to the server. Be sure to register which room your in! This step is worth repeating every once and awhile.
98 |
99 | 3. Once you have data, run ```calculatePriors.py``` which will save a Pickle of the parameters for all the mac addresses and locations in your database. This takes a few minutes so thats why its a separate file.
100 |
101 | 4. To start up the server now, first make sure your IP addresses in ```index.html``` and ```server_com.py``` are correct. Then run ```nohup python server.py &``` to start the main listener and then ```nohup python server_com.py &``` to start the calculation of Bayesian probabilities. It will calculate about once per second. The calculations will automatically update on ```index.html```.
102 |
--------------------------------------------------------------------------------
/RaspberryPi/calculatePriors.py:
--------------------------------------------------------------------------------
1 | import numpy
2 | import cPickle as pickle
3 | import math
4 | from sqlite3 import connect
5 |
6 | conn = connect('/var/www/where3/db/data.db') # use your own location here
7 |
8 | # Determine all unique rooms and mac addressed automatically
9 | c = conn.cursor()
10 | macs = []
11 | for row in c.execute("select distinct mac from locations where room>0"):
12 | macs.append(str(row[0]).decode('utf-8'))
13 |
14 | rooms = []
15 | for row in c.execute("select distinct room from locations where room>0"):
16 | rooms.append(str(row[0]).decode('utf-8'))
17 |
18 | # Initialize probabilities
19 | P={}
20 | nP={}
21 | Wdefault = {}
22 | for mac in macs:
23 | Wdefault[mac]=0
24 | P[mac]={}
25 | nP[mac]={}
26 | nP[mac] = numpy.zeros(100)
27 | for room in rooms:
28 | P[mac][room] = numpy.zeros(100)
29 |
30 | # Add a Gaussian centered around RSSI with STD of 1 RSSI - this takes awhile
31 | for mac in macs:
32 | for room in rooms:
33 | for row in c.execute("select rssi from (select rssi from locations where mac like '" + mac + "' and room=" + str(room) + ")"):
34 | try:
35 | P[mac][room][row[0]+100]=P[mac][room][row[0]+100]+0.4
36 | P[mac][room][row[0]+99]=P[mac][room][row[0]+99]+0.14
37 | P[mac][room][row[0]+101]=P[mac][room][row[0]+101]+0.14
38 | P[mac][room][row[0]+98]=P[mac][room][row[0]+98]+0.06
39 | P[mac][room][row[0]+102]=P[mac][room][row[0]+102]+0.06
40 | P[mac][room][row[0]+97]=P[mac][room][row[0]+97]+0.06
41 | P[mac][room][row[0]+103]=P[mac][room][row[0]+103]+0.06
42 | except Exception,e:
43 | print str(e)
44 | for row in c.execute("select rssi from locations where mac like '" + mac + "' and room>0"):
45 | try:
46 | nP[mac][row[0]+100]=nP[mac][row[0]+100]+0.4
47 | nP[mac][row[0]+99]=nP[mac][row[0]+99]+0.14
48 | nP[mac][row[0]+101]=nP[mac][row[0]+101]+0.14
49 | nP[mac][row[0]+98]=nP[mac][row[0]+98]+0.06
50 | nP[mac][row[0]+102]=nP[mac][row[0]+102]+0.06
51 | nP[mac][row[0]+97]=nP[mac][row[0]+97]+0.06
52 | nP[mac][row[0]+103]=nP[mac][row[0]+103]+0.06
53 | except Exception,e:
54 | print str(e)
55 |
56 | # close the database
57 | conn.close()
58 |
59 | # Normalize the distributions
60 | for mac in macs:
61 | for room in rooms:
62 | pTotal = sum(P[mac][room])
63 | if pTotal>0:
64 | for i in range(100):
65 | P[mac][room][i] = P[mac][room][i]/pTotal
66 | npTotal = sum(nP[mac])
67 | if npTotal>0:
68 | for i in range(100):
69 | nP[mac][i] = nP[mac][i]/npTotal
70 |
71 | # Dumpe them to a pickle
72 | data = pickle.dumps(P,2)
73 | pickle.dump(data,open('P.p','wb'))
74 | data = pickle.dumps(nP,2)
75 | pickle.dump(data,open('nP.p','wb'))
76 | data = pickle.dumps(Wdefault,2)
77 | pickle.dump(data,open('W.p','wb'))
78 |
--------------------------------------------------------------------------------
/RaspberryPi/databasecommands.py:
--------------------------------------------------------------------------------
1 | import sqlite3
2 | import hashlib
3 | import re
4 |
5 | class DataBase:
6 |
7 | def __init__(self,name):
8 | self.name = name
9 | self.conn = sqlite3.connect(self.name)
10 | self.c = self.conn.cursor()
11 |
12 |
13 | def close(self):
14 | self.conn.close()
15 | self.conn = None
16 | self.c = None
17 |
18 |
19 | '''DATA'''
20 |
21 |
22 | def getAllData(self):
23 | return [row for row in self.c.execute('SELECT * FROM locations')]
24 |
25 | #NOT USER INPUT#id: auto generated just add null
26 | #lat: latitude
27 | #long: longitude
28 | #NOT USER INPUT#date: YYYY-MM-DD HH:MM:SS
29 | def addData(self,mac,rssi,room):
30 | self.c.execute('SELECT strftime("%s","now")')
31 | date = self.c.fetchone()[0]
32 | self.c.execute('INSERT INTO locations VALUES (?,?,?,?,?)',(None,mac,rssi,room,date))
33 | id = self.c.lastrowid
34 | #remember to commit changes so we don't lock the db!
35 | self.conn.commit()
36 | return True
37 |
38 | def removeData(self,id):
39 | self.c.execute('DELETE FROM locations WHERE id=?',(id,))
40 | self.conn.commit()
41 |
42 | def getData(self,id):
43 | return [row for row in self.c.execute('SELECT * FROM locations WHERE id=(?)',(id,))]
44 |
45 |
46 | '''
47 |
48 | GENERAL TABLE COMMANDS
49 |
50 | '''
51 |
52 |
53 | #returns true if table exists
54 | def tableExists(self,table_name):
55 | self.c.execute('SELECT count(*) FROM sqlite_master WHERE type="table" AND name=?;',(table_name,))
56 | return not self.c.fetchone()[0] is 0
57 |
58 |
59 | #builds table if doesn't already exist
60 | #-a little sketchy
61 | def createTable(self,table_data):
62 | if self.tableExists(table_data):
63 | return False
64 | else:
65 | self.c.execute('CREATE TABLE %s;' % table_data)
66 | self.conn.commit()
67 | return True
68 |
69 |
70 | #drops table
71 | #-a little sketchy
72 | def dropTable(self,table_name):
73 | if self.tableExists(table_name):
74 | self.c.execute('DROP TABLE %s' % table_name)
75 | self.conn.commit()
76 | return True
77 | else:
78 | return False
79 |
--------------------------------------------------------------------------------
/RaspberryPi/db/data.db:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/jschools/wifi_triangulation/760d1bea776394c362cb437f4a5b32d47f383365/RaspberryPi/db/data.db
--------------------------------------------------------------------------------
/RaspberryPi/dbsetup.py:
--------------------------------------------------------------------------------
1 | import sqlite3
2 | import hashlib
3 |
4 | exec(open('databasecommands.py').read())
5 |
6 | DB = DataBase('db/data.db')
7 |
8 | #
9 | #SET UP INITIAL TABLES
10 | #
11 |
12 | #locations TABLE
13 |
14 | if not DB.tableExists('locations'):
15 | print('no table "locations"... making one now...')
16 | #lat: latitude
17 | #long: longitude
18 | #time: unix time stamp, unixepoch
19 | DB.createTable('locations ('\
20 | +'id INTEGER PRIMARY KEY AUTOINCREMENT, '\
21 | +'mac TEXT, '\
22 | +'rssi INTEGER, '\
23 | +'room INTEGER, '\
24 | +'time INTEGER'\
25 | +')')
26 | else:
27 | print('already "locations" table')
28 |
29 | print('adding test data...')
30 | if DB.getData(1):
31 | print('already data..')
32 | else:
33 | DB.addData('none',0,0)
34 |
35 | def _resetDB():
36 | DB.dropTable('locations')
37 | DB.close()
38 |
--------------------------------------------------------------------------------
/RaspberryPi/index.html:
--------------------------------------------------------------------------------
1 |
2 | WiFi IPS
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
68 |
69 |
70 |
71 |
72 |
73 |
74 |
75 |
76 |
77 |
--------------------------------------------------------------------------------
/RaspberryPi/server.py:
--------------------------------------------------------------------------------
1 | import tornado.httpserver
2 | import tornado.websocket
3 | import tornado.ioloop
4 | import tornado.web
5 | import time
6 | import socket
7 | import sys
8 |
9 | def get_lock(process_name):
10 | global lock_socket
11 | lock_socket = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
12 | try:
13 | lock_socket.bind('\0' + process_name)
14 | print 'I got the lock'
15 | except socket.error:
16 | print 'lock exists'
17 | sys.exit()
18 |
19 | class WSHandler(tornado.websocket.WebSocketHandler):
20 | clients = []
21 | def open(self):
22 | self.clients.append(self)
23 | print 'New connection was opened'
24 | self.write_message("Con!")
25 |
26 | def on_message(self, message):
27 | #print 'Got :', message
28 | for s in self.clients:
29 | s.write_message(message)
30 |
31 | def on_close(self):
32 | self.clients.remove(self)
33 | print 'Conn closed...'
34 |
35 | application = tornado.web.Application([
36 | (r'/ws', WSHandler),
37 | ])
38 |
39 |
40 | if __name__ == "__main__":
41 | get_lock('server_python')
42 | http_server = tornado.httpserver.HTTPServer(application)
43 | http_server.listen(9003)
44 | tornado.ioloop.IOLoop.instance().start()
45 |
46 |
--------------------------------------------------------------------------------
/RaspberryPi/server_com.py:
--------------------------------------------------------------------------------
1 | import subprocess as s
2 | from websocket import create_connection
3 | import thread
4 | import os
5 | import socket
6 | from sys import exit , stdout , stdin
7 | import serial
8 | import datetime
9 | import socket
10 | import sys
11 | from time import time,strftime,localtime,sleep
12 | from sqlite3 import connect
13 | import cPickle as pickle
14 | import math
15 | from operator import itemgetter
16 | import numpy
17 | from collections import deque
18 |
19 |
20 | base_directory = "/var/www/where3/"
21 | ip_address = '127.0.0.1:9003'
22 |
23 | def get_lock(process_name):
24 | global lock_socket
25 | lock_socket = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
26 | try:
27 | lock_socket.bind('\0' + process_name)
28 | print 'I got the lock'
29 | except socket.error:
30 | print 'lock exists'
31 | sys.exit()
32 |
33 | def getMessages():
34 | while 1:
35 | result = ws.recv()
36 | print result
37 |
38 |
39 | def sendState(msg):
40 | try:
41 | ws.send(msg)
42 | except:
43 | pass
44 |
45 |
46 | get_lock('python_server_com_where3')
47 |
48 | # Load main data
49 | start_time = time()
50 | start_time2 = time()
51 | data=pickle.load(open(base_directory+'P.p','rb'))
52 | P=pickle.loads(data)
53 | data=pickle.load(open(base_directory+'nP.p','rb'))
54 | nP=pickle.loads(data)
55 | data=pickle.load(open(base_directory+'W.p','rb'))
56 | Wdefault=pickle.loads(data)
57 | print "Loaded data (%2.1f seconds) " % (time() - start_time)
58 | start_time=time()
59 | fifo=deque([0,0,0,0,0,0,0,0,0,0,0])
60 |
61 |
62 |
63 | # setup server connections
64 | ws = create_connection("ws://"+ip_address+"/ws")
65 | sendState('hello')
66 | try:
67 | thread.start_new_thread(getMessages,())
68 | except:
69 | sys.exit(0)
70 | lastTime = 0
71 | curTime = 0
72 | while 1:
73 | sleep(1)
74 | conn = connect(base_directory+'db/data.db')
75 | c = conn.cursor()
76 | for row in c.execute("select time from locations order by id desc limit 1"):
77 | curTime = row[0]
78 | conn.close()
79 |
80 | if (curTime==lastTime):
81 | pass
82 | else:
83 |
84 | conn = connect(base_directory+'db/data.db')
85 | c = conn.cursor()
86 | W=Wdefault
87 | #for row in c.execute("SELECT mac,rssi FROM locations WHERE time>STRFTIME('%s',DATETIME('now','-30 hours'))GROUP BY mac"):
88 | #for row in c.execute("select mac,rssi from (select id,mac,rssi from locations order by id desc limit 30) group by mac"):
89 | for row in c.execute("select mac,Avg(rssi) as rssi from (select * from locations order by id desc limit 100) group by mac"):
90 | W[str(row[0]).decode('utf-8')]=row[1]
91 |
92 | conn.close()
93 | print "Pulled database (%2.1f seconds) " % (time() - start_time)
94 | start_time=time()
95 | locations = P[P.keys()[0]].keys()
96 | macs = P.keys()
97 | numberLocations = len(locations)
98 | numberMACs = len(macs)
99 |
100 | P_bayes = {}
101 | for loc in locations:
102 | P_bayes[loc]=0
103 |
104 | P_A = 1.0/numberLocations;
105 | P_notA = (numberLocations-1.0)/numberLocations;
106 | for loc in locations:
107 | P_bayes[loc] = 0
108 | P_B_notA = 0
109 | P_B_A = math.log(P_A)
110 | for mac in macs:
111 | if (W[mac]<0):
112 | pInd = int(W[mac]+100)
113 | pFoo = P[mac][loc][pInd]
114 | if (pFoo > 0):
115 | P_B_A = P_B_A + math.log(pFoo)
116 | pFoo = nP[mac][pInd]
117 | if (pFoo > 0):
118 | P_B_notA = P_B_notA + math.log(pFoo)
119 | P_bayes[loc] = (P_B_A)-(P_B_notA)
120 |
121 | start_time=time()
122 |
123 | sorted_P_bayes = {}
124 | sorted_P_bayes = sorted(P_bayes.iteritems(), key=itemgetter(1),reverse=True)
125 | first = True
126 | toSend = "Log-likelihood: Room\n"
127 | for s in sorted_P_bayes:
128 | if first:
129 | toSend = toSend + "%2.3f: %s\n" % (s[1],s[0])
130 | first = False
131 | else:
132 | toSend = toSend + "%2.3f: %s \n" % (s[1],s[0])
133 | lastTime = curTime
134 | print "%d,%s" % (curTime,sorted_P_bayes[0][0])
135 | fifo.popleft()
136 | fifo.append(int(sorted_P_bayes[0][0]))
137 | a = numpy.array(fifo)
138 | counts = numpy.bincount(a)
139 | foo = "Best of 5: %d\n" % (numpy.argmax(counts))
140 | toSend = foo + toSend
141 | sendState(toSend)
142 |
143 | ws.close()
144 |
--------------------------------------------------------------------------------
/RaspberryPi/update.php:
--------------------------------------------------------------------------------
1 | setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
39 | $query = "
40 | INSERT INTO locations (
41 | mac,
42 | rssi,
43 | room,
44 | time
45 | ) VALUES (
46 | :mac,
47 | :rssi,
48 | :room,
49 | :time
50 | )
51 | ";
52 |
53 | $stmt = $db->prepare($query);
54 | $stmt->bindValue(':mac', (string) $mac, SQLITE3_TEXT);
55 | $stmt->bindValue(':rssi', (float) $rssi, SQLITE3_INTEGER);
56 | $stmt->bindValue(':room', (float) $room, SQLITE3_INTEGER);
57 | $stmt->bindValue(':time', (float) $time, SQLITE3_INTEGER);
58 | $stmt->execute();
59 | // close database
60 | $db = null;
61 | }
62 | catch(Exception $e) {
63 | //print $e;
64 | }
65 | }
66 | }
67 |
68 |
69 | // read the POST body
70 | $request_body = file_get_contents('php://input');
71 |
72 | // decode the JSON
73 | $data_points = json_decode($request_body, true);
74 |
75 | // loop over the elements of the array, inserting each one into the db
76 | $num_points = 0;
77 | foreach ($data_points as $data_point) {
78 | insert_data_point($data_point);
79 | $num_points++;
80 | }
81 |
82 | // respond with the number of points we inserted
83 | echo $num_points;
84 |
85 | // TODO: add gzip compression support
86 | // TODO: send http_response_code(400) for bad requests
87 |
88 | ?>
89 |
--------------------------------------------------------------------------------
73 |
74 |
75 |
76 |
77 |
--------------------------------------------------------------------------------
/RaspberryPi/server.py:
--------------------------------------------------------------------------------
1 | import tornado.httpserver
2 | import tornado.websocket
3 | import tornado.ioloop
4 | import tornado.web
5 | import time
6 | import socket
7 | import sys
8 |
9 | def get_lock(process_name):
10 | global lock_socket
11 | lock_socket = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
12 | try:
13 | lock_socket.bind('\0' + process_name)
14 | print 'I got the lock'
15 | except socket.error:
16 | print 'lock exists'
17 | sys.exit()
18 |
19 | class WSHandler(tornado.websocket.WebSocketHandler):
20 | clients = []
21 | def open(self):
22 | self.clients.append(self)
23 | print 'New connection was opened'
24 | self.write_message("Con!")
25 |
26 | def on_message(self, message):
27 | #print 'Got :', message
28 | for s in self.clients:
29 | s.write_message(message)
30 |
31 | def on_close(self):
32 | self.clients.remove(self)
33 | print 'Conn closed...'
34 |
35 | application = tornado.web.Application([
36 | (r'/ws', WSHandler),
37 | ])
38 |
39 |
40 | if __name__ == "__main__":
41 | get_lock('server_python')
42 | http_server = tornado.httpserver.HTTPServer(application)
43 | http_server.listen(9003)
44 | tornado.ioloop.IOLoop.instance().start()
45 |
46 |
--------------------------------------------------------------------------------
/RaspberryPi/server_com.py:
--------------------------------------------------------------------------------
1 | import subprocess as s
2 | from websocket import create_connection
3 | import thread
4 | import os
5 | import socket
6 | from sys import exit , stdout , stdin
7 | import serial
8 | import datetime
9 | import socket
10 | import sys
11 | from time import time,strftime,localtime,sleep
12 | from sqlite3 import connect
13 | import cPickle as pickle
14 | import math
15 | from operator import itemgetter
16 | import numpy
17 | from collections import deque
18 |
19 |
20 | base_directory = "/var/www/where3/"
21 | ip_address = '127.0.0.1:9003'
22 |
23 | def get_lock(process_name):
24 | global lock_socket
25 | lock_socket = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
26 | try:
27 | lock_socket.bind('\0' + process_name)
28 | print 'I got the lock'
29 | except socket.error:
30 | print 'lock exists'
31 | sys.exit()
32 |
33 | def getMessages():
34 | while 1:
35 | result = ws.recv()
36 | print result
37 |
38 |
39 | def sendState(msg):
40 | try:
41 | ws.send(msg)
42 | except:
43 | pass
44 |
45 |
46 | get_lock('python_server_com_where3')
47 |
48 | # Load main data
49 | start_time = time()
50 | start_time2 = time()
51 | data=pickle.load(open(base_directory+'P.p','rb'))
52 | P=pickle.loads(data)
53 | data=pickle.load(open(base_directory+'nP.p','rb'))
54 | nP=pickle.loads(data)
55 | data=pickle.load(open(base_directory+'W.p','rb'))
56 | Wdefault=pickle.loads(data)
57 | print "Loaded data (%2.1f seconds)