-
Notifications
You must be signed in to change notification settings - Fork 8
/
default.html
2726 lines (2155 loc) · 137 KB
/
default.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<html>
<head>
<title>Bose AR BLE API</title>
<script src="https://cdn.jsdelivr.net/gh/google/code-prettify@master/loader/run_prettify.js"></script>
</head>
<style>
pre {
overflow-x: scroll;
}
</style>
<body>
<h1 style='text-align: center;'>Bose AR BLE API</h1>
<hr>
<div id='bluetoothWarning'>
<div style='text-align: center;'><i>You don't have Web Bluetooth enabled. The demos won't work <a href='https://github.com/zakaton/Bose-Frames-Web-SDK#%EF%B8%8F-setting-up-the-sdk'>unless you enable it</a></i></div>
<hr>
<script>
const bluetoothWarning = document.getElementById('bluetoothWarning');
if(navigator.bluetooth)
bluetoothWarning.remove();
</script>
</div>
<h2>Table of Contents:</h2>
<ol id='tableOfContents'>
<a><li>What is Bose AR?</li></a>
<a><li>Connecting to Your Bose AR device</li></a>
<a><li>Gestures</li></a>
<a><li>Gesture Information</li></a>
<a><li>Gesture Configuration</li></a>
<a><li>Gesture Data</li></a>
<a><li>Sensors</li></a>
<a><li>Sensor Information</li></a>
<a><li>Sensor Configuration</li></a>
<a><li>Sensor Data</li></a>
<a><li>Active and Controllable Noise Cancellation</li></a>
<a><li>Why Bose AR Failed</li></a>
<a><li>The Potential of Bose AR</li></a>
</ol>
<script>
document.querySelectorAll('#tableOfContents a').forEach(a => {
a.href = `#${a.querySelector('li').innerText.toLowerCase().replace(/ /g, '-')}`;
});
</script>
<hr>
<a><h2>What is Bose AR?</h2></a>
<p>"Bose AR" is just a motion sensor Bose slapped on a bunch of their headphones, specifically:</p>
<ul>
<li><a href='https://www.amazon.com/Bose-Frames-Audio-Sunglasses-Black/dp/B07P7VVCDD/ref=sr_1_2?dchild=1&keywords=bose+frames&qid=1593754190&sr=8-2'>Bose Frames</a></li>
<li><a href='https://www.amazon.com/dp/B0756CYWWD/ref=twister_B075RYG44J?_encoding=UTF8&psc=1'>Bose QuietComfort 35 II</a></li>
<li><a href='https://www.amazon.com/Bose-Cancelling-Wireless-Bluetooth-Headphones/dp/B07Q9MJKBV/ref=sr_1_2?dchild=1&keywords=700+bose&qid=1593754225&s=electronics&sr=1-2'>Bose 700</a> (the demos may not work unless you are connected via the <a href='https://www.bose.com/en_us/support/article/bose-connect-app-pulse.html'>Bose Connect App</a>)</li>
</ul>
<p>It contains an accelerometer, gyroscope, and magnetometer, and provides the following services:</p>
<ul>
<li><b>Raw Sensor Data</b></li>
<ul>
<li>accelerometer</li>
<li>gyroscope</li>
</ul>
<li><b>Head Orientation</b></li>
<ul>
<li>Relative to initial orientation when connected</li>
<li>Relative to north using the magnetometer like a compass</li>
</ul>
<li><b>Gestures</b></li>
<ul>
<li>Hold and Press (not available on the Bose Frames)</li>
<li>Double Tap</li>
<li>Head Nod</li>
<li>Head Shake</li>
</ul>
<li>That's it</li>
<ul>
<li>No "Spatial Audio" engine</li>
<li>No Video Overlay</li>
<li>It's just a stripped-down 3DoF headset without a visual display</li>
</ul>
</ul>
<p>
The official Bose AR SDK's (iOS, Android, and Unity) simply provide access to this motion sensor and nothing more.
Since Bose has removed their official SDK's, this tutorial will show you how to access this motion sensor yourself.
</p>
<p>
Note that while Bose refers to it as an <i>SDK</i>, it's really more of an <i>API</i>, since it's just an interface to the motion sensor.
</p>
<p>
<i>You may need to <a href='https://btu.bose.com/'>update your Bose AR device's firmware</a> for the demos to work</i>
</p>
<hr>
<a><h2>Connecting to Your Bose AR device</h2></a>
<h3>Service UUID: <code>"0000fdd2-0000-1000-8000-00805f9b34fb"</code></h3>
<p>
Start by connecting to the Bose AR device via Bluetooth LE (Low Energy).
The service UUID for all Bose AR devices is <b><code>"0000fdd2-0000-1000-8000-00805f9b34fb"</code></b>.
You can see it in action in the <a href='https://github.com/zakaton/Bose-Frames-Web-SDK/blob/master/script/BoseARDevice.js#L41'>Bose AR Web SDK</a>.
</p>
<p>
Note that the "Bose AR device" is separate from the headphones itself.
The "Bose AR Device" refers to the motion sensor that you connect via Bluetooth LE, whereas the headphones is just a regular pair of audio headphones you connect via Bluetooth Classic.
This requires you to connect to your device twice - once to get the motion sensor data and again to get audio playback and microphone access.
</p>
<p>
While this may be annoying, it also has its advantages.
You can have the Bose AR device connected to one system while the audio headset is connected to another system, decoupling motion sensor streaming and audio streaming.
</p>
<p>
Also note that a single Bose AR device can be connected to multiple systems at once, since it's just broadcasting motion sensor data.
This is a bit of a <a href='https://twitter.com/ConcreteSciFi/status/1213665643934863360'>security issue</a> since anyone can enable/disable/access motion sensor data without the wearer's permission or even awareness.
</p>
<p>
You can also connect to multiple Bose AR devices from the same system for multi-user applications.
Thus, you can even have a many-to-many connection (several Bose AR devices connected to several systems)
</p>
<p>
This tutorial just shows you how to connect to the motion sensor; you can connect to the audio headset like you do any other bluetooth headset (going to whatever system settings your platform OS has)
</p>
<h3>Demo</h3>
<div>
<button id='connectButton'>connect</button> <span id='connectSpan'></span>
<script type='module'>
const BOSE_AR_SERVICE_UUID = "0000fdd2-0000-1000-8000-00805f9b34fb";
const button = document.getElementById('connectButton');
const span = document.getElementById('connectSpan');
button.addEventListener('click', event => {
// request bluetooth device
navigator.bluetooth.requestDevice({
filters : [
{services : [BOSE_AR_SERVICE_UUID]}
]
}).then(device => {
span.innerText = 'got device';
span.style.color = 'green';
// connect to device
return device.gatt.connect();
}).then(server => {
span.innerText = 'connected to device';
span.style.color = 'green';
// get service providing Bose AR-related characteristics
return server.getPrimaryService(BOSE_AR_SERVICE_UUID);
}).then(service => {
button.disabled = true;
span.innerText = 'connected';
span.style.color = 'green';
}).catch(error => {
console.error(error);
span.innerText = 'connection failed';
span.style.color = 'red';
});
});
</script>
</div>
<h3>Code</h3>
<pre></pre>
<hr>
<a><h2>Gestures</h2></a>
<p>Bose AR devices allow you to enable/disable gestures, as well as be notified when they are trigged by the user.</p>
<p>There are 3 characteristics related to gestures:</p>
<ul>
<li><a href='#gesture-information'><b>Gesture Information</b></a> - provides information about which gestures are available and how to parse payloads from <i>Gesture Configuration</i></li>
<li><a href='#gesture-configuration'><b>Gesture Configuration</b></a> - allows you to enable/disable gestures (as well as see which are currently enabled/disabled)</li>
<li><a href='#gesture-data'><b>Gesture Data</b></a> - notifies you when gestures are triggered by the user (if enabled)
</ul>
<hr>
<a><h2>Gesture Information</h2></a>
<h3>Characteristic UUID: <code>"a0384f52-f95a-4bcd-b898-7b9ceec92dad"</code></h3>
<p>
This is a <b>Read</b> characteristic that provides how large each entry in <a href='#gesture-configuration'><i>Gesture Configuration</i></a> is to help with parsing.
The payload size is always 1 byte (a Uint8 byte indicating whether it's enabled or not), but we'll still use it when parsing <a href='#gesture-configuration'><i>Gesture Configuration</i></a> anyway.
</p>
<p>Below is each gesture's id number (it's pretty random, especially the gap between 131 and 192):</p>
<ol>
<li value='129'>Double Tap</li>
<li>Head Nod</li>
<li>Head Shake</li>
<br>
<li value='192'>Unknown (on the Bose Frames it behaves the same as double-tap, though it may be something else on the QC35's or the 700's)</li>
<li>Unknown (same as 192, but for Head Nod)</li>
<li>Unknown (same as 192, but for Head Shake)</li>
</ol>
<p>
<b>Characteristic Value</b>
</p>
<style>
[data-byte-grid] {
display: grid;
border: solid black;
overflow-x: scroll;
}
[data-byte-grid] > div {
text-align: center;
border: solid black 1px;
}
[data-byte-grid] > [data-title] {
grid-column: 1 / span 1 !important;
}
[data-byte-grid] > [data-byte-index] {
grid-row: 1;
background-color: lightsteelblue;
}
[data-byte-grid] > [data-value-index] {
grid-row: 2;
}
[data-byte-grid] > [data-type] {
grid-row: 3;
}
[data-byte-grid] > [data-type="Uint8"] {
grid-column: auto / span 1;
}
[data-byte-grid] > [data-type="Uint16"] {
grid-column: auto / span 2;
}
[data-byte-grid] > [data-type="Int16"] {
grid-column: auto / span 2;
}
[data-byte-grid] > [data-name] {
grid-row: 4;
}
[data-byte-grid] > [data-name="gestureId"] {
grid-column: auto / span 1;
}
[data-byte-grid] > [data-name="timestamp"] {
grid-column: auto / span 2;
}
[data-byte-grid] > [data-name="sensorId"] {
grid-column: auto / span 1;
}
[data-byte-grid] > [data-name="vectorX"] {
grid-column: auto / span 2;
}
[data-byte-grid] > [data-name="vectorY"] {
grid-column: auto / span 2;
}
[data-byte-grid] > [data-name="vectorZ"] {
grid-column: auto / span 2;
}
[data-byte-grid] > [data-name="quaternionX"] {
grid-column: auto / span 2;
}
[data-byte-grid] > [data-name="quaternionY"] {
grid-column: auto / span 2;
}
[data-byte-grid] > [data-name="quaternionZ"] {
grid-column: auto / span 2;
}
[data-byte-grid] > [data-name="quaternionW"] {
grid-column: auto / span 2;
}
</style>
<style>
#gestureInformationGrid {
grid-template-columns: repeat(19, 1fr);
}
#gestureInformationGrid > [data-name="payload"] {
grid-column: auto / span 2;
}
#gestureInformationGrid > [data-value-index] {
grid-column: auto / span 3;
}
</style>
<div data-byte-grid id='gestureInformationGrid'>
<div data-title data-byte-index>byte #</div>
<div data-title data-value-index>entry #</div>
<div data-title data-type>type</div>
<div data-title data-name>name</div>
</div>
<script>
const gestureInformationGrid = document.getElementById('gestureInformationGrid');
for(let byteIndex = 0; byteIndex < 6*3; byteIndex++) {
const byteIndexDiv = document.createElement('div');
byteIndexDiv.innerText = byteIndex;
byteIndexDiv.dataset.byteIndex = byteIndex;
gestureInformationGrid.appendChild(byteIndexDiv);
if(byteIndex % 3 == 0) {
const valueIndex = byteIndex/3;
const indexDiv = document.createElement('div');
indexDiv.innerText = indexDiv.dataset.valueIndex = valueIndex;
gestureInformationGrid.appendChild(indexDiv);
}
const typeDiv = document.createElement('div');
const nameDiv = document.createElement('div');
const valueByteIndex = byteIndex % 3;
switch(valueByteIndex) {
case 0:
typeDiv.innerText = typeDiv.dataset.type = 'Uint8';
gestureInformationGrid.appendChild(typeDiv);
nameDiv.dataset.name = 'gestureId';
nameDiv.innerText = 'gesture id';
gestureInformationGrid.appendChild(nameDiv);
break;
case 1:
typeDiv.dataset.type = 'Uint16';
typeDiv.innerText = 'little-endian Uint16';
gestureInformationGrid.appendChild(typeDiv);
nameDiv.dataset.name = 'payload';
nameDiv.innerText = 'payload size'
gestureInformationGrid.appendChild(nameDiv);
break;
default:
break;
}
}
</script>
<h3>Demo</h3>
<div>
<button id='gestureInformationButton'>connect</button>
<span id='gestureInformationSpan'></span>
<div id='gestureInformationDiv'></div>
<script type='module'>
const BOSE_AR_SERVICE_UUID = "0000fdd2-0000-1000-8000-00805f9b34fb";
const BOSE_AR_GESTURE_INFORMATION_CHARACTERISTIC_UUID = "a0384f52-f95a-4bcd-b898-7b9ceec92dad";
const button = document.getElementById('gestureInformationButton');
const span = document.getElementById('gestureInformationSpan');
const output = document.getElementById('gestureInformationDiv');
const gestureInformationEntryLength = 3;
const gestureNames = {
129 : 'double tap',
130 : 'head nod',
131 : 'head shake',
192 : 'unknown gesture 192',
193 : 'unknown gesture 193',
194 : 'unknown gesture 194',
};
button.addEventListener('click', event => {
output.innerText = '';
// request bluetooth device
navigator.bluetooth.requestDevice({
filters : [
{services : [BOSE_AR_SERVICE_UUID]}
]
}).then(device => {
span.innerText = 'got device';
span.style.color = 'green';
// connect to device
return device.gatt.connect();
}).then(server => {
span.innerText = 'connected to device';
span.style.color = 'green';
// get service providing Bose AR-related characteristics
return server.getPrimaryService(BOSE_AR_SERVICE_UUID);
}).then(service => {
span.innerText = 'connected';
span.style.color = 'green';
// get gesture information characteristic
service.getCharacteristic(BOSE_AR_GESTURE_INFORMATION_CHARACTERISTIC_UUID)
.then(gestureInformationCharacteristic => {
span.innerText = 'got gesture information characteristic';
span.style.color = 'green';
// read gesture information characteristic value
gestureInformationCharacteristic.readValue()
.then(dataView => {
const buffer = Array.from(new Uint8Array(dataView.buffer));
output.innerText += `gesture information raw byte array: ${JSON.stringify(buffer)}\n\n`;
button.disabled = true;
span.innerText = 'gesture information characteristic read';
span.style.color = 'green';
let index = 0;
const gestureInformationEntries = [];
output.innerText += 'parsing byte array...\n\n'
while(index + length < dataView.byteLength) {
output.innerText += `parsing new gesture at index: ${index}\n`;
const gestureId = dataView.getUint8(index);
output.innerText += `gesture id (parsed as a Uint8 starting at index ${index}): ${gestureId}\n`;
const gestureName = gestureNames[gestureId];
output.innerText += `gesture name (indexed by gesture id): "${gestureName}"\n`;
const configurationPayloadLength = dataView.getUint16(index+1, true);
output.innerText += `configuration payload length (parsed as little-endian Uint16 starting at index ${index+1}): ${configurationPayloadLength}\n`;
const gestureInformationEntry = {
gestureId,
gestureName,
configurationPayloadLength,
};
output.innerText += `\n`;
gestureInformationEntries.push(gestureInformationEntry);
index += gestureInformationEntryLength;
}
}).catch(error => {
console.error(error);
span.innerText = 'unable to get gesture information characteristic';
span.style.color = 'red';
});
}).catch(error => {
console.error(error);
span.innerText = 'unable to get gesture information characteristic';
span.style.color = 'red';
});
}).catch(error => {
console.error(error);
span.innerText = 'connection failed';
span.style.color = 'red';
});
});
</script>
</div>
<h3>Code</h3>
<pre></pre>
<hr>
<a><h2>Gesture Configuration</h2></a>
<h3>Characteristic UUID: <code>"21e550af-f780-477b-9334-1f983296f1d7"</code></h3>
<p>
This is a <b>Read/Write/Notify</b> characteristic that describes which gestures are enabled.
The byte array is composed of an array of [gestureId, isEnabled] entries, each a Uint8 byte.
</p>
<p>
To enable or disable a gesture, write a byte array in the same format as the characteristic value itself (see below).
In the byte array, substitute a <b>0</b> or <b>1</b> in the <b>isEnabled</b> byte index after a given <b>sensorId</b>.
</p>
<p>
<i>
See <a href='#gesture-information'>Gesture Information</a> to see each gesture's id number.
</i>
</p>
<p>
<b>Characteristic Value</b>
</p>
<style>
#gestureConfigurationGrid {
grid-template-columns: repeat(13, 1fr);
}
#gestureConfigurationGrid > [data-value-index] {
grid-column: auto / span 2;
}
</style>
<div data-byte-grid id='gestureConfigurationGrid'>
<div data-title data-byte-index>byte #</div>
<div data-title data-value-index>entry #</div>
<div data-title data-type>type</div>
<div data-title data-name>name</div>
</div>
<script>
const gestureConfigurationGrid = document.getElementById('gestureConfigurationGrid');
for(let byteIndex = 0; byteIndex < 6*2; byteIndex++) {
const byteIndexDiv = document.createElement('div');
byteIndexDiv.innerText = byteIndex;
byteIndexDiv.dataset.byteIndex = byteIndex;
gestureConfigurationGrid.appendChild(byteIndexDiv);
if(byteIndex % 2 == 0) {
const valueIndex = byteIndex/2;
const indexDiv = document.createElement('div');
indexDiv.innerText = indexDiv.dataset.valueIndex = valueIndex;
gestureConfigurationGrid.appendChild(indexDiv);
}
const typeDiv = document.createElement('div');
typeDiv.innerText = typeDiv.dataset.type = 'Uint8';
const nameDiv = document.createElement('div');
const valueByteIndex = byteIndex % 2;
switch(valueByteIndex) {
case 0:
nameDiv.dataset.name = 'gestureId';
nameDiv.innerText = 'gesture id';
break;
case 1:
nameDiv.dataset.name = 'enabled';
nameDiv.innerText = 'is enabled';
break;
default:
break;
}
gestureConfigurationGrid.appendChild(typeDiv);
gestureConfigurationGrid.appendChild(nameDiv);
}
</script>
<h3>Demo</h3>
<div>
<button id='gestureConfigurationButton'>connect</button>
<span id='gestureConfigurationSpan'></span>
<br>
<div id='gestureConfigurationSelects'>
<label>
Double Tap (129): <select data-gesture-id='129' disabled>
<option selected>disabled</option>
<option>enabled</option>
</select>
</label>
<br>
<label>
Head Nod (130): <select data-gesture-id='130' disabled>
<option selected>disabled</option>
<option>enabled</option>
</select>
</label>
<br>
<label>
Head Shake (131): <select data-gesture-id='131' disabled>
<option selected>disabled</option>
<option>enabled</option>
</select>
</label>
<br>
<label>
Gesture 192 <select data-gesture-id='192' disabled>
<option selected>disabled</option>
<option>enabled</option>
</select>
</label>
<br>
<label>
Gesture 193: <select data-gesture-id='193' disabled>
<option selected>disabled</option>
<option>enabled</option>
</select>
</label>
<br>
<label>
Gesture 194 <select data-gesture-id='194' disabled>
<option selected>disabled</option>
<option>enabled</option>
</select>
</label>
<br>
</div>
<br>
<div id='gestureConfigurationOutput'></div>
<script type='module'>
const BOSE_AR_SERVICE_UUID = "0000fdd2-0000-1000-8000-00805f9b34fb";
const BOSE_AR_GESTURE_INFORMATION_CHARACTERISTIC_UUID = "a0384f52-f95a-4bcd-b898-7b9ceec92dad";
const BOSE_AR_GESTURE_CONFIGURATION_CHARACTERISTIC_UUID = "21e550af-f780-477b-9334-1f983296f1d7";
const button = document.getElementById('gestureConfigurationButton');
const span = document.getElementById('gestureConfigurationSpan');
const selectsContainer = document.getElementById('gestureConfigurationSelects');
const output = document.getElementById('gestureConfigurationOutput');
const gestureInformationEntryLength = 3;
const gestureNames = {
129 : 'double tap',
130 : 'head nod',
131 : 'head shake',
192 : 'unknown gesture 192',
193 : 'unknown gesture 193',
194 : 'unknown gesture 194',
};
button.addEventListener('click', event => {
output.innerText = '';
// request bluetooth device
navigator.bluetooth.requestDevice({
filters : [
{services : [BOSE_AR_SERVICE_UUID]}
]
}).then(device => {
span.innerText = 'got device';
span.style.color = 'green';
// connect to device
return device.gatt.connect();
}).then(server => {
span.innerText = 'connected to device';
span.style.color = 'green';
// get service providing Bose AR-related characteristics
return server.getPrimaryService(BOSE_AR_SERVICE_UUID);
}).then(service => {
span.innerText = 'connected';
span.style.color = 'green';
// get gesture information characteristic
service.getCharacteristic(BOSE_AR_GESTURE_INFORMATION_CHARACTERISTIC_UUID)
.then(gestureInformationCharacteristic => {
span.innerText = 'got gesture information characteristic';
span.style.color = 'green';
// read gesture information characteristic value
gestureInformationCharacteristic.readValue()
.then(dataView => {
const buffer = Array.from(new Uint8Array(dataView.buffer));
output.innerText += `gesture information raw byte array: ${JSON.stringify(buffer)}\n\n`;
button.disabled = true;
span.innerText = 'gesture information characteristic read';
span.style.color = 'green';
let index = 0;
const gestureInformationEntries = [];
output.innerText += 'parsing byte array...\n\n'
while(index + length < dataView.byteLength) {
output.innerText += `parsing new gesture at index: ${index}\n`;
const gestureId = dataView.getUint8(index);
output.innerText += `gesture id (parsed as a Uint8 starting at index ${index}): ${gestureId}\n`;
const gestureName = gestureNames[gestureId];
output.innerText += `gesture name (indexed by gesture id): "${gestureName}"\n`;
const configurationPayloadLength = dataView.getUint16(index+1, true);
output.innerText += `configuration payload length (parsed as little-endian Uint16 starting at index ${index+1}): ${configurationPayloadLength}\n`;
const gestureInformationEntry = {
gestureId,
gestureName,
configurationPayloadLength,
};
output.innerText += `\n`;
gestureInformationEntries.push(gestureInformationEntry);
index += gestureInformationEntryLength;
}
// get gesture configuration characteristic
service.getCharacteristic(BOSE_AR_GESTURE_CONFIGURATION_CHARACTERISTIC_UUID)
.then(gestureConfigurationCharacteristic => {
span.innerText = 'got gesture configuration characteristic';
span.style.color = 'green';
// set initial state of selects
function updateSelects(dataView) {
const byteArray = Array.from(new Uint8Array(dataView.buffer));
output.innerText = `gesture configuration raw byte array: ${JSON.stringify(byteArray)}`;
let index = 0;
while(index < byteArray.length) {
const gestureId = byteArray[index];
const enabled = byteArray[index+1] == 1;
const select = selectsContainer.querySelector(`select[data-gesture-id="${gestureId}"]`);
select.value = enabled? 'enabled':'disabled';
const gestureInformationEntry = gestureInformationEntries.find(gestureInformationEntry => gestureInformationEntry.gestureId == gestureId);
index += 1 + gestureInformationEntry;
}
}
// read gesture configuration characteristic value
gestureConfigurationCharacteristic.readValue()
.then(dataView => {
button.disabled = true;
span.innerText = 'gesture configuration characteristic read';
span.style.color = 'green';
updateSelects(dataView);
// listen for gesture configuration characteristic updates
gestureConfigurationCharacteristic.startNotifications();
gestureConfigurationCharacteristic.addEventListener('characteristicvaluechanged', event => {
const dataView = gestureConfigurationCharacteristic.value;
updateSelects(dataView);
});
}).catch(error => {
console.error(error);
span.innerText = 'unable to connect to gesture configuration characteristic';
span.style.color = 'red';
});
// add eventlisteners to selects to enable/disable gestures
selectsContainer.querySelectorAll('select').forEach(select => {
select.disabled = false;
select.addEventListener('input', event => {
const gestureId = Number(select.dataset.gestureId);
const enabled = event.target.value == 'enabled';
const dataView = gestureConfigurationCharacteristic.value;
let byteArray = Array.from(new Uint8Array(dataView.buffer));
byteArray[byteArray.indexOf(gestureId)+1] = enabled? 1:0;
byteArray = new Uint8Array(byteArray);
gestureConfigurationCharacteristic.writeValue(byteArray);
});
});
}).catch(error => {
console.error(error);
span.innerText = 'unable get gesture configuration characteristic';
span.style.color = 'red';
});
}).catch(error => {
console.error(error);
span.innerText = 'unable to get gesture information characteristic';
span.style.color = 'red';
});
}).catch(error => {
console.error(error);
span.innerText = 'unable to get gesture information characteristic';
span.style.color = 'red';
});
}).catch(error => {
console.error(error);
span.innerText = 'connection failed';
span.style.color = 'red';
});
});
</script>
</div>
<h3>Code</h3>
<pre></pre>
<hr>
<a><h2>Gesture Data</h2></a>
<h3>Characteristic UUID: <code>"9014dd4e-79ba-4802-a275-894d3b85ac74"</code></h3>
<p>
This is a <b>Notify</b> characteristic that notifies you when gestures are triggered by the user.
The first byte (<b>Uint8</b>) is the <b>gesture id</b>, and the next 2 bytes (<b>big-endian Uint16</b>) is the <b>timestamp</b>.
</p>
<p>
<b>Characteristic Value</b>
</p>
<style>
#gestureDataGrid {
grid-template-columns: repeat(4, 1fr);
}
#gestureDataGrid > [data-value-index] {
grid-column: auto / span 3;
}
</style>
<div data-byte-grid id='gestureDataGrid'>
<div data-title data-byte-index>byte #</div>
<div data-title data-value-index>entry #</div>
<div data-title data-type>type</div>
<div data-title data-name>name</div>
</div>
<script>
const gestureDataGrid = document.getElementById('gestureDataGrid');
for(let byteIndex = 0; byteIndex < 3; byteIndex++) {
const byteIndexDiv = document.createElement('div');
byteIndexDiv.innerText = byteIndex;
byteIndexDiv.dataset.byteIndex = byteIndex;
gestureDataGrid.appendChild(byteIndexDiv);
if(byteIndex % 3 == 0) {
const valueIndex = byteIndex/2;
const indexDiv = document.createElement('div');
indexDiv.innerText = indexDiv.dataset.valueIndex = valueIndex;
gestureDataGrid.appendChild(indexDiv);
}
const typeDiv = document.createElement('div');
const nameDiv = document.createElement('div');
const valueByteIndex = byteIndex % 3;
switch(valueByteIndex) {
case 0:
nameDiv.dataset.name = 'gestureId';
nameDiv.innerText = 'gesture id';
typeDiv.innerText = 'Uint8';
typeDiv.dataset.type = 'Uint8';
gestureDataGrid.appendChild(typeDiv);
gestureDataGrid.appendChild(nameDiv);
break;
case 1:
nameDiv.dataset.name = 'timestamp';
nameDiv.innerText = 'timestamp';
typeDiv.innerText = 'big-endian Uint16';
typeDiv.dataset.type = 'Uint16';
gestureDataGrid.appendChild(typeDiv);
gestureDataGrid.appendChild(nameDiv);
break;
default:
break;
}
}
</script>
<h3>Demo</h3>
<div>
<button id='gestureDataButton'>connect</button>
<span id='gestureDataSpan'></span>
<br>
<div id='gestureDataSelects'>
<label>
Double Tap (129): <select data-gesture-id='129' disabled>
<option selected>disabled</option>
<option>enabled</option>
</select>
</label>
<br>
<label>
Head Nod (130): <select data-gesture-id='130' disabled>
<option selected>disabled</option>
<option>enabled</option>
</select>
</label>
<br>
<label>
Head Shake (131): <select data-gesture-id='131' disabled>
<option selected>disabled</option>
<option>enabled</option>
</select>
</label>
<br>
<label>
Gesture 192 <select data-gesture-id='192' disabled>
<option selected>disabled</option>
<option>enabled</option>
</select>
</label>
<br>
<label>
Gesture 193: <select data-gesture-id='193' disabled>
<option selected>disabled</option>
<option>enabled</option>
</select>
</label>
<br>
<label>
Gesture 194 <select data-gesture-id='194' disabled>
<option selected>disabled</option>
<option>enabled</option>
</select>
</label>
<br>
</div>
<br>
<div id='gestureDataOutput'></div>
<div id='gestureDataOutput2'></div>
<script type='module'>
const BOSE_AR_SERVICE_UUID = "0000fdd2-0000-1000-8000-00805f9b34fb";
const BOSE_AR_GESTURE_INFORMATION_CHARACTERISTIC_UUID = "a0384f52-f95a-4bcd-b898-7b9ceec92dad";
const BOSE_AR_GESTURE_CONFIGURATION_CHARACTERISTIC_UUID = "21e550af-f780-477b-9334-1f983296f1d7";
const BOSE_AR_GESTURE_DATA_CHARACTERISTIC_UUID = "9014dd4e-79ba-4802-a275-894d3b85ac74";
const button = document.getElementById('gestureDataButton');
const span = document.getElementById('gestureDataSpan');
const selectsContainer = document.getElementById('gestureDataSelects');
const output = document.getElementById('gestureDataOutput');
const output2 = document.getElementById('gestureDataOutput2');
const gestureInformationEntryLength = 3;
const gestureNames = {
129 : 'double tap',
130 : 'head nod',
131 : 'head shake',
192 : 'unknown gesture 192',
193 : 'unknown gesture 193',
194 : 'unknown gesture 194',
};
button.addEventListener('click', event => {
output.innerText = '';
output2.innerText = '';
// request bluetooth device
navigator.bluetooth.requestDevice({
filters : [
{services : [BOSE_AR_SERVICE_UUID]}
]
}).then(device => {
span.innerText = 'got device';
span.style.color = 'green';
// connect to device
return device.gatt.connect();
}).then(server => {