File size: 41,726 Bytes
291d5a1
 
 
 
 
15e8115
291d5a1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
c56017a
 
 
 
 
 
 
 
374a766
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
15e8115
 
 
 
 
 
291d5a1
 
 
374a766
 
 
 
 
15e8115
 
374a766
 
15e8115
 
 
374a766
 
 
 
291d5a1
 
 
 
 
 
 
 
 
15e8115
 
 
 
 
 
 
 
 
 
 
 
 
 
 
291d5a1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
c56017a
291d5a1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
15e8115
291d5a1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
c56017a
291d5a1
 
15e8115
 
 
291d5a1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
c56017a
374a766
 
15e8115
 
 
 
 
 
 
 
 
 
 
 
 
 
 
374a766
 
 
 
 
 
 
 
 
 
 
15e8115
 
 
 
 
374a766
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
15e8115
374a766
 
 
 
 
 
 
 
 
 
291d5a1
 
15e8115
 
291d5a1
c56017a
291d5a1
 
374a766
291d5a1
 
 
 
c56017a
291d5a1
374a766
 
 
291d5a1
 
 
c56017a
 
 
 
291d5a1
c56017a
 
 
 
 
291d5a1
c56017a
 
 
 
 
 
 
 
 
291d5a1
 
 
c56017a
291d5a1
 
15e8115
 
 
 
 
 
 
 
 
291d5a1
 
 
 
 
 
c56017a
291d5a1
 
374a766
291d5a1
 
 
 
 
 
 
 
 
 
 
 
c56017a
 
 
 
 
 
291d5a1
c56017a
291d5a1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
c56017a
 
 
 
 
 
 
291d5a1
 
c56017a
 
291d5a1
 
 
 
 
 
 
 
c56017a
 
 
 
 
 
 
 
 
 
 
 
291d5a1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
15e8115
291d5a1
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
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="Permissions-Policy" content="serial=(self)">
    <title>ESP32/Arduino Code Uploader</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <script src="https://cdn.jsdelivr.net/npm/monaco-editor@0.43.0/min/vs/loader.js"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        #editor {
            height: 400px;
            border: 1px solid #e5e7eb;
            border-radius: 0.375rem;
        }
        #serialMonitor {
            height: 200px;
            overflow-y: auto;
            background-color: #1e293b;
            color: #f8fafc;
            font-family: monospace;
            padding: 0.5rem;
            border-radius: 0.375rem;
        }
        .tab-active {
            border-bottom: 2px solid #3b82f6;
            color: #3b82f6;
        }
        .progress-bar {
            transition: width 0.3s ease;
        }
        .serial-line {
            margin: 0;
            padding: 0;
            line-height: 1.2;
        }
        .blink {
            animation: blink 1s step-end infinite;
        }
        @keyframes blink {
            from, to { opacity: 1 }
            50% { opacity: 0.5 }
        }
        .port-option {
            display: flex;
            align-items: center;
        }
        .port-icon {
            margin-right: 8px;
            color: #4b5563;
        }
        .permission-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0,0,0,0.5);
            z-index: 1000;
            justify-content: center;
            align-items: center;
        }
        .permission-content {
            background-color: white;
            padding: 2rem;
            border-radius: 0.5rem;
            max-width: 500px;
            width: 90%;
        }
        .browser-warning {
            background-color: #fef3c7;
            border-left: 4px solid #f59e0b;
            padding: 1rem;
            margin-bottom: 1rem;
        }
    </style>
</head>
<body class="bg-gray-50 min-h-screen">
    <!-- Permission Request Modal -->
    <div id="permissionModal" class="permission-modal">
        <div class="permission-content">
            <h2 class="text-xl font-bold mb-4">Serial Port Access Required</h2>
            <p class="mb-4">To connect to your device, you need to grant permission to access serial ports. Please click the button below and select your device from the browser's prompt.</p>
            <div class="flex flex-col space-y-4">
                <button id="requestPermissionBtn" class="bg-blue-600 hover:bg-blue-700 text-white py-2 px-6 rounded-md flex items-center justify-center">
                    <i class="fas fa-key mr-2"></i> Grant Permission
                </button>
                <button id="learnMoreBtn" class="text-blue-600 hover:text-blue-800 py-2 px-6 rounded-md flex items-center justify-center">
                    <i class="fas fa-info-circle mr-2"></i> Learn More About Serial Access
                </button>
            </div>
        </div>
    </div>

    <div class="container mx-auto px-4 py-8">
        <header class="mb-8">
            <h1 class="text-3xl font-bold text-gray-800 flex items-center">
                <i class="fas fa-microchip mr-3 text-blue-500"></i>
                ESP32/Arduino Code Uploader
            </h1>
            <p class="text-gray-600 mt-2">Upload and manage your sketches for ESP32 and Arduino devices</p>
        </header>

        <!-- Browser Warning (hidden by default) -->
        <div id="browserWarning" class="browser-warning hidden">
            <div class="flex items-start">
                <div class="flex-shrink-0">
                    <i class="fas fa-exclamation-triangle text-yellow-600"></i>
                </div>
                <div class="ml-3">
                    <h3 class="text-sm font-medium text-yellow-800">Browser Compatibility Notice</h3>
                    <div class="mt-2 text-sm text-yellow-700">
                        <p>This application requires the Web Serial API which is currently only supported in Chrome/Edge 89+ and Opera 76+.</p>
                    </div>
                </div>
            </div>
        </div>

        <div class="grid grid-cols-1 lg:grid-cols-3 gap-6">
            <!-- Left Column - Connection & Upload -->
            <div class="lg:col-span-1 space-y-6">
                <!-- Connection Panel -->
                <div class="bg-white rounded-lg shadow p-6">
                    <h2 class="text-xl font-semibold mb-4 flex items-center">
                        <i class="fas fa-plug mr-2 text-green-500"></i>
                        Device Connection
                    </h2>
                    
                    <div class="space-y-4">
                        <div>
                            <label class="block text-sm font-medium text-gray-700 mb-1">Port</label>
                            <div class="flex">
                                <select id="portSelect" class="flex-grow border border-gray-300 rounded-l-md px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500">
                                    <option value="">Select a port</option>
                                </select>
                                <button id="refreshPorts" class="bg-gray-200 hover:bg-gray-300 px-3 py-2 rounded-r-md border border-l-0 border-gray-300">
                                    <i class="fas fa-sync-alt"></i>
                                </button>
                            </div>
                            <p id="portHelp" class="mt-1 text-xs text-gray-500">Connect your device and click refresh</p>
                        </div>
                        
                        <div>
                            <label class="block text-sm font-medium text-gray-700 mb-1">Board Type</label>
                            <select id="boardSelect" class="w-full border border-gray-300 rounded-md px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500">
                                <optgroup label="ESP32 Boards">
                                    <option value="esp32">ESP32 Dev Module</option>
                                    <option value="esp32s2">ESP32-S2</option>
                                    <option value="esp32c3">ESP32-C3</option>
                                    <option value="esp32s3">ESP32-S3</option>
                                    <option value="cyd_esp32">CYD ESP32-2432S028</option>
                                </optgroup>
                                <optgroup label="Arduino Boards">
                                    <option value="uno">Arduino UNO</option>
                                    <option value="nano">Arduino Nano</option>
                                    <option value="mega">Arduino Mega 2560</option>
                                </optgroup>
                            </select>
                        </div>
                        
                        <div id="boardOptions" class="hidden">
                            <label class="block text-sm font-medium text-gray-700 mb-1">Board Options</label>
                            <div id="specificOptions" class="space-y-2">
                                <!-- Options will be populated based on board selection -->
                            </div>
                        </div>
                        
                        <div class="pt-2">
                            <button id="connectBtn" class="w-full bg-blue-600 hover:bg-blue-700 text-white py-2 px-4 rounded-md flex items-center justify-center disabled:opacity-50 disabled:cursor-not-allowed">
                                <i class="fas fa-link mr-2"></i>
                                Connect
                            </button>
                        </div>
                        
                        <div id="connectionStatus" class="hidden mt-3 p-3 rounded-md bg-gray-100 text-gray-700 flex items-center">
                            <i class="fas fa-circle mr-2 text-gray-400"></i>
                            <span>Disconnected</span>
                        </div>
                    </div>
                </div>
                
                <!-- Upload Panel -->
                <div class="bg-white rounded-lg shadow p-6">
                    <h2 class="text-xl font-semibold mb-4 flex items-center">
                        <i class="fas fa-upload mr-2 text-purple-500"></i>
                        Upload Sketch
                    </h2>
                    
                    <div class="space-y-4">
                        <div>
                            <label class="block text-sm font-medium text-gray-700 mb-1">Sketch File</label>
                            <div class="flex items-center">
                                <input type="file" id="fileInput" accept=".ino,.cpp,.h" class="hidden">
                                <input type="text" id="fileName" placeholder="No file selected" readonly class="flex-grow border border-gray-300 rounded-l-md px-3 py-2 focus:outline-none">
                                <button id="browseBtn" class="bg-gray-200 hover:bg-gray-300 px-3 py-2 rounded-r-md border border-l-0 border-gray-300">
                                    <i class="fas fa-folder-open"></i>
                                </button>
                            </div>
                        </div>
                        
                        <div id="uploadProgress" class="hidden">
                            <div class="flex justify-between text-sm text-gray-600 mb-1">
                                <span>Uploading...</span>
                                <span id="progressPercent">0%</span>
                            </div>
                            <div class="w-full bg-gray-200 rounded-full h-2.5">
                                <div id="progressBar" class="progress-bar bg-blue-600 h-2.5 rounded-full" style="width: 0%"></div>
                            </div>
                        </div>
                        
                        <div class="pt-2">
                            <button id="uploadBtn" disabled class="w-full bg-purple-600 hover:bg-purple-700 text-white py-2 px-4 rounded-md flex items-center justify-center disabled:opacity-50 disabled:cursor-not-allowed">
                                <i class="fas fa-cloud-upload-alt mr-2"></i>
                                Upload to Device
                            </button>
                        </div>
                    </div>
                </div>
            </div>
            
            <!-- Right Column - Editor & Serial Monitor -->
            <div class="lg:col-span-2 space-y-6">
                <!-- Code Editor Tabs -->
                <div class="bg-white rounded-lg shadow">
                    <div class="border-b border-gray-200">
                        <nav class="-mb-px flex">
                            <button id="editorTab" class="tab-active py-4 px-6 text-sm font-medium flex items-center">
                                <i class="fas fa-code mr-2"></i>
                                Code Editor
                            </button>
                            <button id="serialTab" class="py-4 px-6 text-sm font-medium text-gray-500 hover:text-gray-700 flex items-center">
                                <i class="fas fa-terminal mr-2"></i>
                                Serial Monitor
                            </button>
                        </nav>
                    </div>
                    
                    <!-- Editor Content -->
                    <div id="editorContent" class="p-4">
                        <div id="editor"></div>
                        <div class="mt-4 flex justify-between">
                            <div>
                                <button id="newFileBtn" class="bg-gray-200 hover:bg-gray-300 text-gray-700 py-1 px-3 rounded-md text-sm mr-2">
                                    <i class="fas fa-file mr-1"></i> New
                                </button>
                                <button id="saveFileBtn" class="bg-gray-200 hover:bg-gray-300 text-gray-700 py-1 px-3 rounded-md text-sm">
                                    <i class="fas fa-save mr-1"></i> Save
                                </button>
                            </div>
                            <div>
                                <button id="verifyBtn" class="bg-blue-100 hover:bg-blue-200 text-blue-700 py-1 px-3 rounded-md text-sm">
                                    <i class="fas fa-check-circle mr-1"></i> Verify
                                </button>
                            </div>
                        </div>
                    </div>
                    
                    <!-- Serial Monitor Content -->
                    <div id="serialContent" class="hidden p-4">
                        <div id="serialMonitor"></div>
                        <div class="mt-4 flex">
                            <input type="text" id="serialInput" placeholder="Enter command..." class="flex-grow border border-gray-300 rounded-l-md px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500">
                            <button id="serialSendBtn" class="bg-blue-600 hover:bg-blue-700 text-white py-2 px-4 rounded-r-md">
                                Send
                            </button>
                        </div>
                        <div class="mt-3 flex justify-between items-center">
                            <div class="flex items-center">
                                <label class="inline-flex items-center">
                                    <input type="checkbox" id="autoScroll" checked class="h-4 w-4 text-blue-600 rounded border-gray-300 focus:ring-blue-500">
                                    <span class="ml-2 text-sm text-gray-600">Auto-scroll</span>
                                </label>
                                <label class="inline-flex items-center ml-4">
                                    <input type="checkbox" id="showTimestamps" class="h-4 w-4 text-blue-600 rounded border-gray-300 focus:ring-blue-500">
                                    <span class="ml-2 text-sm text-gray-600">Timestamps</span>
                                </label>
                            </div>
                            <div>
                                <button id="clearSerialBtn" class="text-sm text-gray-600 hover:text-gray-800 flex items-center">
                                    <i class="fas fa-trash-alt mr-1"></i> Clear
                                </button>
                            </div>
                        </div>
                    </div>
                </div>
                
                <!-- Output Console -->
                <div class="bg-white rounded-lg shadow p-6">
                    <h2 class="text-xl font-semibold mb-4 flex items-center">
                        <i class="fas fa-terminal mr-2 text-yellow-500"></i>
                        Compilation Output
                    </h2>
                    <div id="outputConsole" class="bg-gray-800 text-green-100 font-mono text-sm p-3 rounded-md h-40 overflow-y-auto">
                        <p>> Ready to compile and upload code to your device</p>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <script>
        // Board configurations
        const boardConfigurations = {
            // ESP32 Boards
            'esp32': {
                name: 'ESP32 Dev Module',
                baudRate: 115200,
                flashMode: 'dio',
                flashFreq: '80m',
                uploadSpeed: 921600,
                partitionScheme: 'default',
                cpuFreq: '240',
                flashSize: '4MB',
                options: [
                    { id: 'flashMode', label: 'Flash Mode', type: 'select', options: ['qio', 'qout', 'dio', 'dout'], default: 'dio' },
                    { id: 'flashFreq', label: 'Flash Frequency', type: 'select', options: ['80m', '40m'], default: '80m' },
                    { id: 'uploadSpeed', label: 'Upload Speed', type: 'select', options: ['115200', '230400', '460800', '921600'], default: '921600' }
                ]
            },
            'cyd_esp32': {
                name: 'CYD ESP32-2432S028',
                baudRate: 115200,
                flashMode: 'dio',
                flashFreq: '80m',
                uploadSpeed: 460800,
                partitionScheme: 'huge_app',
                cpuFreq: '240',
                flashSize: '16MB',
                options: [
                    { id: 'flashMode', label: 'Flash Mode', type: 'select', options: ['dio', 'dout'], default: 'dio' },
                    { id: 'flashFreq', label: 'Flash Frequency', type: 'select', options: ['80m', '40m'], default: '80m' },
                    { id: 'uploadSpeed', label: 'Upload Speed', type: 'select', options: ['115200', '230400', '460800'], default: '460800' },
                    { id: 'touchScreen', label: 'Touch Screen', type: 'checkbox', default: true }
                ]
            },
            // Arduino Boards
            'uno': {
                name: 'Arduino UNO',
                baudRate: 9600,
                processor: 'atmega328p',
                programmer: 'arduino',
                options: [
                    { id: 'programmer', label: 'Programmer', type: 'select', options: ['arduino', 'avrisp', 'usbtiny'], default: 'arduino' }
                ]
            },
            'nano': {
                name: 'Arduino Nano',
                baudRate: 9600,
                processor: 'atmega328p',
                programmer: 'arduino',
                options: [
                    { id: 'processor', label: 'Processor', type: 'select', options: ['atmega328p', 'atmega328'], default: 'atmega328p' },
                    { id: 'programmer', label: 'Programmer', type: 'select', options: ['arduino', 'avrisp', 'usbtiny'], default: 'arduino' }
                ]
            },
            'mega': {
                name: 'Arduino Mega 2560',
                baudRate: 115200,
                processor: 'atmega2560',
                programmer: 'wiring',
                options: [
                    { id: 'programmer', label: 'Programmer', type: 'select', options: ['wiring', 'arduino', 'avrisp'], default: 'wiring' }
                ]
            }
        };

        // Global variables for serial connection
        let port = null;
        let reader = null;
        let writer = null;
        let isReading = false;
        let isConnected = false;
        let activePorts = [];

        document.addEventListener('DOMContentLoaded', function() {
            // Check browser compatibility first
            checkBrowserCompatibility();
            
            // Tab switching
            const editorTab = document.getElementById('editorTab');
            const serialTab = document.getElementById('serialTab');
            const editorContent = document.getElementById('editorContent');
            const serialContent = document.getElementById('serialContent');
            
            editorTab.addEventListener('click', () => {
                editorTab.classList.add('tab-active');
                serialTab.classList.remove('tab-active');
                editorContent.classList.remove('hidden');
                serialContent.classList.add('hidden');
            });
            
            serialTab.addEventListener('click', () => {
                serialTab.classList.add('tab-active');
                editorTab.classList.remove('tab-active');
                serialContent.classList.remove('hidden');
                editorContent.classList.add('hidden');
            });
            
            // Initialize Monaco Editor
            require.config({ paths: { 'vs': 'https://cdn.jsdelivr.net/npm/monaco-editor@0.43.0/min/vs' }});
            require(['vs/editor/editor.main'], function() {
                window.editor = monaco.editor.create(document.getElementById('editor'), {
                    value: [
                        'void setup() {',
                        '  Serial.begin(115200);',
                        '  pinMode(LED_BUILTIN, OUTPUT);',
                        '}',
                        '',
                        'void loop() {',
                        '  digitalWrite(LED_BUILTIN, HIGH);',
                        '  delay(1000);',
                        '  digitalWrite(LED_BUILTIN, LOW);',
                        '  delay(1000);',
                        '}'
                    ].join('\n'),
                    language: 'cpp',
                    theme: 'vs',
                    minimap: { enabled: false },
                    fontSize: 14,
                    lineNumbers: 'on',
                    roundedSelection: true,
                    scrollBeyondLastLine: false,
                    automaticLayout: true
                });
            });
            
            // Board selection handler
            const boardSelect = document.getElementById('boardSelect');
            const boardOptions = document.getElementById('boardOptions');
            const specificOptions = document.getElementById('specificOptions');
            
            boardSelect.addEventListener('change', function() {
                const boardType = this.value;
                const config = boardConfigurations[boardType];
                
                if (config && config.options && config.options.length > 0) {
                    boardOptions.classList.remove('hidden');
                    specificOptions.innerHTML = '';
                    
                    config.options.forEach(option => {
                        const optionDiv = document.createElement('div');
                        optionDiv.className = 'flex items-center justify-between';
                        
                        const label = document.createElement('label');
                        label.className = 'text-sm text-gray-600';
                        label.textContent = option.label;
                        
                        let input;
                        if (option.type === 'select') {
                            input = document.createElement('select');
                            input.className = 'text-sm border border-gray-300 rounded px-2 py-1';
                            input.id = option.id;
                            
                            option.options.forEach(opt => {
                                const optionEl = document.createElement('option');
                                optionEl.value = opt;
                                optionEl.textContent = opt;
                                if (opt === option.default) {
                                    optionEl.selected = true;
                                }
                                input.appendChild(optionEl);
                            });
                        } else if (option.type === 'checkbox') {
                            const container = document.createElement('div');
                            container.className = 'flex items-center';
                            
                            input = document.createElement('input');
                            input.type = 'checkbox';
                            input.className = 'h-4 w-4 text-blue-600 rounded border-gray-300 focus:ring-blue-500';
                            input.id = option.id;
                            input.checked = option.default;
                            
                            container.appendChild(input);
                            input = container;
                        }
                        
                        optionDiv.appendChild(label);
                        optionDiv.appendChild(input);
                        specificOptions.appendChild(optionDiv);
                    });
                } else {
                    boardOptions.classList.add('hidden');
                }
            });
            
            // File handling
            const fileInput = document.getElementById('fileInput');
            const fileName = document.getElementById('fileName');
            const browseBtn = document.getElementById('browseBtn');
            const newFileBtn = document.getElementById('newFileBtn');
            const saveFileBtn = document.getElementById('saveFileBtn');
            
            browseBtn.addEventListener('click', () => fileInput.click());
            
            fileInput.addEventListener('change', function() {
                if (this.files.length > 0) {
                    const file = this.files[0];
                    fileName.value = file.name;
                    
                    const reader = new FileReader();
                    reader.onload = function(e) {
                        window.editor.setValue(e.target.result);
                    };
                    reader.readAsText(file);
                    
                    document.getElementById('uploadBtn').disabled = false;
                }
            });
            
            newFileBtn.addEventListener('click', () => {
                fileName.value = 'new_sketch.ino';
                window.editor.setValue([
                    'void setup() {',
                    '  // Initialize your hardware here',
                    '}',
                    '',
                    'void loop() {',
                    '  // Your main code here',
                    '}'
                ].join('\n'));
            });
            
            saveFileBtn.addEventListener('click', () => {
                const content = window.editor.getValue();
                const blob = new Blob([content], { type: 'text/plain' });
                const url = URL.createObjectURL(blob);
                
                const a = document.createElement('a');
                a.href = url;
                a.download = fileName.value || 'arduino_sketch.ino';
                document.body.appendChild(a);
                a.click();
                document.body.removeChild(a);
                URL.revokeObjectURL(url);
            });
            
            // Serial monitor
            const serialMonitor = document.getElementById('serialMonitor');
            const serialInput = document.getElementById('serialInput');
            const serialSendBtn = document.getElementById('serialSendBtn');
            const clearSerialBtn = document.getElementById('clearSerialBtn');
            const autoScroll = document.getElementById('autoScroll');
            
            function addToSerialMonitor(text, type = 'output') {
                const line = document.createElement('p');
                line.className = 'serial-line';
                
                if (type === 'input') {
                    line.innerHTML = `<span class="text-blue-400">>></span> ${text}`;
                } else {
                    line.textContent = text;
                }
                
                serialMonitor.appendChild(line);
                
                if (autoScroll.checked) {
                    serialMonitor.scrollTop = serialMonitor.scrollHeight;
                }
            }
            
            async function sendSerialData(data) {
                if (!isConnected || !writer) {
                    addToOutputConsole('Not connected to a device', 'error');
                    return;
                }
                
                try {
                    addToSerialMonitor(data, 'input');
                    
                    // Add newline if not present
                    if (!data.endsWith('\n')) {
                        data += '\n';
                    }
                    
                    await writer.write(new TextEncoder().encode(data));
                } catch (error) {
                    addToOutputConsole(`Error sending data: ${error}`, 'error');
                }
            }
            
            serialSendBtn.addEventListener('click', () => {
                const command = serialInput.value.trim();
                if (command) {
                    sendSerialData(command);
                    serialInput.value = '';
                }
            });
            
            serialInput.addEventListener('keypress', (e) => {
                if (e.key === 'Enter') {
                    serialSendBtn.click();
                }
            });
            
            clearSerialBtn.addEventListener('click', () => {
                serialMonitor.innerHTML = '';
            });
            
            // Serial port handling
            const portSelect = document.getElementById('portSelect');
            const refreshPorts = document.getElementById('refreshPorts');
            const connectBtn = document.getElementById('connectBtn');
            const connectionStatus = document.getElementById('connectionStatus');
            const uploadBtn = document.getElementById('uploadBtn');
            const portHelp = document.getElementById('portHelp');
            const permissionModal = document.getElementById('permissionModal');
            const requestPermissionBtn = document.getElementById('requestPermissionBtn');
            const learnMoreBtn = document.getElementById('learnMoreBtn');
            const browserWarning = document.getElementById('browserWarning');
            
            // Check browser compatibility
            function checkBrowserCompatibility() {
                if (!('serial' in navigator)) {
                    browserWarning.classList.remove('hidden');
                    refreshPorts.disabled = true;
                    connectBtn.disabled = true;
                    portHelp.textContent = 'Web Serial API not supported in this browser. Use Chrome/Edge 89+ or Opera 76+.';
                    addToOutputConsole('Web Serial API not supported in this browser. Try Chrome/Edge 89+ or Opera 76+.', 'error');
                    return false;
                }
                return true;
            }
            
            // Show permission modal
            function showPermissionModal() {
                permissionModal.style.display = 'flex';
            }
            
            // Hide permission modal
            function hidePermissionModal() {
                permissionModal.style.display = 'none';
            }
            
            // Learn more button handler
            learnMoreBtn.addEventListener('click', () => {
                window.open('https://developer.mozilla.org/en-US/docs/Web/API/Web_Serial_API', '_blank');
            });
            
            // Request permission button handler
            requestPermissionBtn.addEventListener('click', async () => {
                try {
                    // Request permission to access serial ports
                    const port = await navigator.serial.requestPort({
                        filters: [
                            { usbVendorId: 0x2341 }, // Arduino
                            { usbVendorId: 0x2A03 }, // Arduino (alternative)
                            { usbVendorId: 0x10C4 }, // ESP32
                            { usbVendorId: 0x1A86 }  // CH340 (common USB-to-serial)
                        ]
                    });
                    
                    // If we get here, permission was granted
                    hidePermissionModal();
                    await refreshPortList();
                } catch (error) {
                    if (error.name === 'NotFoundError') {
                        addToOutputConsole('No device was selected', 'info');
                        portHelp.textContent = 'No device selected. Make sure your device is connected.';
                    } else if (error.name === 'SecurityError') {
                        addToOutputConsole('Permission denied for serial port access', 'error');
                        portHelp.textContent = 'Permission denied. Please allow serial port access.';
                    } else {
                        addToOutputConsole(`Error: ${error.message}`, 'error');
                        portHelp.textContent = `Error: ${error.message}`;
                    }
                    hidePermissionModal();
                }
            });
            
            async function refreshPortList() {
                if (!checkBrowserCompatibility()) return;
                
                portSelect.innerHTML = '<option value="">Select a port</option>';
                activePorts = [];
                
                try {
                    // Get list of ports we already have permission for
                    const ports = await navigator.serial.getPorts();
                    
                    if (ports.length === 0) {
                        portSelect.innerHTML = '<option value="">No ports found</option>';
                        portHelp.textContent = 'No serial ports found. Connect a device and click refresh.';
                        addToOutputConsole('No serial ports found. Connect a device and click refresh.');
                        
                        // Show permission modal since we don't have any ports
                        showPermissionModal();
                        return;
                    }
                    
                    // Store ports for later reference
                    activePorts = ports;
                    
                    ports.forEach((port, index) => {
                        const option = document.createElement('option');
                        option.value = index; // Using index as value since port objects can't be serialized
                        
                        const portInfo = port.getInfo();
                        const portName = portInfo.usbVendorId ? 
                            `Serial Port (Vendor: 0x${portInfo.usbVendorId.toString(16)}, Product: 0x${portInfo.usbProductId.toString(16)})` : 
                            'Serial Port';
                        
                        const optionContent = document.createElement('div');
                        optionContent.className = 'port-option';
                        optionContent.innerHTML = `
                            <i class="fas fa-microchip port-icon"></i>
                            <span>${portName}</span>
                        `;
                        
                        option.textContent = portName;
                        portSelect.appendChild(option);
                    });
                    
                    portHelp.textContent = `Found ${ports.length} serial port(s)`;
                    addToOutputConsole(`Found ${ports.length} serial port(s)`);
                } catch (error) {
                    if (error.name === 'SecurityError') {
                        addToOutputConsole('Permission denied for serial port access. Please grant permission.', 'error');
                        portHelp.textContent = 'Permission denied. Please allow serial port access.';
                        showPermissionModal();
                    } else {
                        addToOutputConsole(`Error accessing serial ports: ${error}`, 'error');
                        portSelect.innerHTML = '<option value="">Error accessing ports</option>';
                        portHelp.textContent = 'Error accessing ports. Please try again.';
                    }
                }
            }
            
            refreshPorts.addEventListener('click', async () => {
                refreshPorts.classList.add('blink');
                addToOutputConsole('Searching for serial ports...');
                portHelp.textContent = 'Searching for devices...';
                
                try {
                    // First try to get ports we already have permission for
                    await refreshPortList();
                } finally {
                    refreshPorts.classList.remove('blink');
                }
            });
            
            async function connectToPort() {
                if (!portSelect.value) {
                    addToOutputConsole('Please select a port first', 'error');
                    return;
                }
                
                const portIndex = parseInt(portSelect.value);
                if (isNaN(portIndex) || portIndex < 0 || portIndex >= activePorts.length) {
                    addToOutputConsole('Invalid port selection', 'error');
                    return;
                }
                
                try {
                    port = activePorts[portIndex];
                    
                    if (!port) {
                        throw new Error('Selected port not found');
                    }
                    
                    // Get board configuration
                    const boardType = boardSelect.value;
                    const config = boardConfigurations[boardType];
                    
                    // Open the port with the board's baud rate
                    await port.open({ baudRate: config.baudRate });
                    
                    // Set up the reader and writer
                    writer = port.writable.getWriter();
                    reader = port.readable.getReader();
                    
                    // Start reading from the port
                    isReading = true;
                    readSerialData();
                    
                    // Update UI
                    isConnected = true;
                    connectBtn.innerHTML = '<i class="fas fa-unlink mr-2"></i> Disconnect';
                    connectBtn.classList.remove('bg-blue-600', 'hover:bg-blue-700');
                    connectBtn.classList.add('bg-red-600', 'hover:bg-red-700');
                    
                    connectionStatus.classList.remove('hidden', 'bg-gray-100', 'text-gray-700');
                    connectionStatus.classList.add('bg-green-100', 'text-green-700');
                    connectionStatus.innerHTML = '<i class="fas fa-circle mr-2 text-green-500"></i><span>Connected to ' + portSelect.options[portSelect.selectedIndex].text + '</span>';
                    
                    addToOutputConsole(`Connected to ${portSelect.options[portSelect.selectedIndex].text} at ${config.baudRate} baud`);
                    uploadBtn.disabled = false;
                    
                    // Send a test message to check connection
                    setTimeout(() => {
                        if (isConnected) {
                            sendSerialData("AT"); // Common test command
                        }
                    }, 500);
                    
                } catch (error) {
                    addToOutputConsole(`Error connecting to port: ${error}`, 'error');
                    portHelp.textContent = `Connection failed: ${error.message}`;
                    
                    if (port) {
                        try {
                            await port.close();
                        } catch (e) {
                            console.error('Error closing port:', e);
                        }
                        port = null;
                    }
                    
                    // Reset connection state
                    isConnected = false;
                    connectBtn.innerHTML = '<i class="fas fa-link mr-2"></i> Connect';
                    connectBtn.classList.remove('bg-red-600', 'hover:bg-red-700');
                    connectBtn.classList.add('bg-blue-600', 'hover:bg-blue-700');
                    
                    connectionStatus.classList.remove('bg-green-100', 'text-green-700');
                    connectionStatus.classList.add('bg-gray-100', 'text-gray-700');
                    connectionStatus.innerHTML = '<i class="fas fa-circle mr-2 text-gray-400"></i><span>Disconnected</span>';
                    
                    uploadBtn.disabled = true;
                }
            }
            
            async function disconnectFromPort() {
                isReading = false;
                
                if (reader) {
                    try {
                        await reader.cancel();
                    } catch (error) {
                        console.error('Error cancelling reader:', error);
                    }
                    reader = null;
                }
                
                if (writer) {
                    try {
                        await writer.releaseLock();
                    } catch (error) {
                        console.error('Error releasing writer:', error);
                    }
                    writer = null;
                }
                
                if (port) {
                    try {
                        await port.close();
                    } catch (error) {
                        console.error('Error closing port:', error);
                    }
                    port = null;
                }
                
                // Update UI
                isConnected = false;
                connectBtn.innerHTML = '<i class="fas fa-link mr-2"></i> Connect';
                connectBtn.classList.remove('bg-red-600', 'hover:bg-red-700');
                connectBtn.classList.add('bg-blue-600', 'hover:bg-blue-700');
                
                connectionStatus
</html>