summaryrefslogtreecommitdiffstats
path: root/quantum/quantum.c
blob: 4f4cee4e9b380219c745032540e0732a0ebe7a72 (plain)
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
/* Copyright 2016-2017 Jack Humbert
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "quantum.h"
#ifdef PROTOCOL_LUFA
#include "outputselect.h"
#endif

#ifndef TAPPING_TERM
#define TAPPING_TERM 200
#endif

#include "backlight.h"
extern backlight_config_t backlight_config;

#ifdef FAUXCLICKY_ENABLE
#include "fauxclicky.h"
#endif

static void do_code16 (uint16_t code, void (*f) (uint8_t)) {
  switch (code) {
  case QK_MODS ... QK_MODS_MAX:
    break;
  default:
    return;
  }

  if (code & QK_LCTL)
    f(KC_LCTL);
  if (code & QK_LSFT)
    f(KC_LSFT);
  if (code & QK_LALT)
    f(KC_LALT);
  if (code & QK_LGUI)
    f(KC_LGUI);

  if (code < QK_RMODS_MIN) return;

  if (code & QK_RCTL)
    f(KC_RCTL);
  if (code & QK_RSFT)
    f(KC_RSFT);
  if (code & QK_RALT)
    f(KC_RALT);
  if (code & QK_RGUI)
    f(KC_RGUI);
}

static inline void qk_register_weak_mods(uint8_t kc) {
    add_weak_mods(MOD_BIT(kc));
    send_keyboard_report();
}

static inline void qk_unregister_weak_mods(uint8_t kc) {
    del_weak_mods(MOD_BIT(kc));
    send_keyboard_report();
}

static inline void qk_register_mods(uint8_t kc) {
    add_weak_mods(MOD_BIT(kc));
    send_keyboard_report();
}

static inline void qk_unregister_mods(uint8_t kc) {
    del_weak_mods(MOD_BIT(kc));
    send_keyboard_report();
}

void register_code16 (uint16_t code) {
  if (IS_MOD(code) || code == KC_NO) {
      do_code16 (code, qk_register_mods);
  } else {
      do_code16 (code, qk_register_weak_mods);
  }
  register_code (code);
}

void unregister_code16 (uint16_t code) {
  unregister_code (code);
  if (IS_MOD(code) || code == KC_NO) {
      do_code16 (code, qk_unregister_mods);
  } else {
      do_code16 (code, qk_unregister_weak_mods);
  }
}

__attribute__ ((weak))
bool process_action_kb(keyrecord_t *record) {
  return true;
}

__attribute__ ((weak))
bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
  return process_record_user(keycode, record);
}

__attribute__ ((weak))
bool process_record_user(uint16_t keycode, keyrecord_t *record) {
  return true;
}

void reset_keyboard(void) {
  clear_keyboard();
#if defined(AUDIO_ENABLE) || (defined(MIDI_ENABLE) && defined(MIDI_ENABLE_BASIC))
  music_all_notes_off();
  shutdown_user();
#endif
  wait_ms(250);
#ifdef CATERINA_BOOTLOADER
  *(uint16_t *)0x0800 = 0x7777; // these two are a-star-specific
#endif
  bootloader_jump();
}

// Shift / paren setup

#ifndef LSPO_KEY
  #define LSPO_KEY KC_9
#endif
#ifndef RSPC_KEY
  #define RSPC_KEY KC_0
#endif

static bool shift_interrupted[2] = {0, 0};
static uint16_t scs_timer[2] = {0, 0};

bool process_record_quantum(keyrecord_t *record) {

  /* This gets the keycode from the key pressed */
  keypos_t key = record->event.key;
  uint16_t keycode;

  #if !defined(NO_ACTION_LAYER) && defined(PREVENT_STUCK_MODIFIERS)
    /* TODO: Use store_or_get_action() or a similar function. */
    if (!disable_action_cache) {
      uint8_t layer;

      if (record->event.pressed) {
        layer = layer_switch_get_layer(key);
        update_source_layers_cache(key, layer);
      } else {
        layer = read_source_layers_cache(key);
      }
      keycode = keymap_key_to_keycode(layer, key);
    } else
  #endif
    keycode = keymap_key_to_keycode(layer_switch_get_layer(key), key);

    // This is how you use actions here
    // if (keycode == KC_LEAD) {
    //   action_t action;
    //   action.code = ACTION_DEFAULT_LAYER_SET(0);
    //   process_action(record, action);
    //   return false;
    // }

  if (!(
    process_record_kb(keycode, record) &&
  #if defined(MIDI_ENABLE) && defined(MIDI_ADVANCED)
    process_midi(keycode, record) &&
  #endif
  #ifdef AUDIO_ENABLE
    process_audio(keycode, record) &&
  #endif
  #if defined(AUDIO_ENABLE) || (defined(MIDI_ENABLE) && defined(MIDI_BASIC))
    process_music(keycode, record) &&
  #endif
  #ifdef TAP_DANCE_ENABLE
    process_tap_dance(keycode, record) &&
  #endif
  #ifndef DISABLE_LEADER
    process_leader(keycode, record) &&
  #endif
  #ifndef DISABLE_CHORDING
    process_chording(keycode, record) &&
  #endif
  #ifdef COMBO_ENABLE
    process_combo(keycode, record) &&
  #endif
  #ifdef UNICODE_ENABLE
    process_unicode(keycode, record) &&
  #endif
  #ifdef UCIS_ENABLE
    process_ucis(keycode, record) &&
  #endif
  #ifdef PRINTING_ENABLE
    process_printer(keycode, record) &&
  #endif
  #ifdef UNICODEMAP_ENABLE
    process_unicode_map(keycode, record) &&
  #endif
      true)) {
    return false;
  }

  // Shift / paren setup

  switch(keycode) {
    case RESET:
      if (record->event.pressed) {
        reset_keyboard();
      }
	  return false;
      break;
    case DEBUG:
      if (record->event.pressed) {
          print("\nDEBUG: enabled.\n");
          debug_enable = true;
      }
	  return false;
      break;
  #ifdef FAUXCLICKY_ENABLE
  case FC_TOG:
    if (record->event.pressed) {
      FAUXCLICKY_TOGGLE;
    }
    return false;
    break;
  case FC_ON:
    if (record->event.pressed) {
      FAUXCLICKY_ON;
    }
    return false;
    break;
  case FC_OFF:
    if (record->event.pressed) {
      FAUXCLICKY_OFF;
    }
    return false;
    break;
  #endif
	#ifdef RGBLIGHT_ENABLE
	case RGB_TOG:
		if (record->event.pressed) {
			rgblight_toggle();
      }
	  return false;
      break;
	case RGB_MOD:
		if (record->event.pressed) {
			rgblight_step();
      }
	  return false;
      break;
	case RGB_HUI:
		if (record->event.pressed) {
			rgblight_increase_hue();
      }
	  return false;
      break;
	case RGB_HUD:
		if (record->event.pressed) {
			rgblight_decrease_hue();
      }
	  return false;
      break;
	case RGB_SAI:
		if (record->event.pressed) {
			rgblight_increase_sat();
      }
	  return false;
      break;
	case RGB_SAD:
		if (record->event.pressed) {
			rgblight_decrease_sat();
      }
	  return false;
      break;
	case RGB_VAI:
		if (record->event.pressed) {
			rgblight_increase_val();
      }
	  return false;
      break;
	case RGB_VAD:
		if (record->event.pressed) {
			rgblight_decrease_val();
      }
	  return false;
      break;
	#endif
    #ifdef PROTOCOL_LUFA
    case OUT_AUTO:
      if (record->event.pressed) {
        set_output(OUTPUT_AUTO);
      }
      return false;
      break;
    case OUT_USB:
      if (record->event.pressed) {
        set_output(OUTPUT_USB);
      }
      return false;
      break;
    #ifdef BLUETOOTH_ENABLE
    case OUT_BT:
      if (record->event.pressed) {
        set_output(OUTPUT_BLUETOOTH);
      }
      return false;
      break;
    #endif
    #endif
    case MAGIC_SWAP_CONTROL_CAPSLOCK ... MAGIC_TOGGLE_NKRO:
      if (record->event.pressed) {
        // MAGIC actions (BOOTMAGIC without the boot)
        if (!eeconfig_is_enabled()) {
            eeconfig_init();
        }
        /* keymap config */
        keymap_config.raw = eeconfig_read_keymap();
        switch (keycode)
        {
          case MAGIC_SWAP_CONTROL_CAPSLOCK:
            keymap_config.swap_control_capslock = true;
            break;
          case MAGIC_CAPSLOCK_TO_CONTROL:
            keymap_config.capslock_to_control = true;
            break;
          case MAGIC_SWAP_LALT_LGUI:
            keymap_config.swap_lalt_lgui = true;
            break;
          case MAGIC_SWAP_RALT_RGUI:
            keymap_config.swap_ralt_rgui = true;
            break;
          case MAGIC_NO_GUI:
            keymap_config.no_gui = true;
            break;
          case MAGIC_SWAP_GRAVE_ESC:
            keymap_config.swap_grave_esc = true;
            break;
          case MAGIC_SWAP_BACKSLASH_BACKSPACE:
            keymap_config.swap_backslash_backspace = true;
            break;
          case MAGIC_HOST_NKRO:
            keymap_config.nkro = true;
            break;
          case MAGIC_SWAP_ALT_GUI:
            keymap_config.swap_lalt_lgui = true;
            keymap_config.swap_ralt_rgui = true;
            break;
          case MAGIC_UNSWAP_CONTROL_CAPSLOCK:
            keymap_config.swap_control_capslock = false;
            break;
          case MAGIC_UNCAPSLOCK_TO_CONTROL:
            keymap_config.capslock_to_control = false;
            break;
          case MAGIC_UNSWAP_LALT_LGUI:
            keymap_config.swap_lalt_lgui = false;
            break;
          case MAGIC_UNSWAP_RALT_RGUI:
            keymap_config.swap_ralt_rgui = false;
            break;
          case MAGIC_UNNO_GUI:
            keymap_config.no_gui = false;
            break;
          case MAGIC_UNSWAP_GRAVE_ESC:
            keymap_config.swap_grave_esc = false;
            break;
          case MAGIC_UNSWAP_BACKSLASH_BACKSPACE:
            keymap_config.swap_backslash_backspace = false;
            break;
          case MAGIC_UNHOST_NKRO:
            keymap_config.nkro = false;
            break;
          case MAGIC_UNSWAP_ALT_GUI:
            keymap_config.swap_lalt_lgui = false;
            keymap_config.swap_ralt_rgui = false;
            break;
          case MAGIC_TOGGLE_NKRO:
            keymap_config.nkro = !keymap_config.nkro;
            break;
          default:
            break;
        }
        eeconfig_update_keymap(keymap_config.raw);
        clear_keyboard(); // clear to prevent stuck keys

        return false;
      }
      break;
    case KC_LSPO: {
      if (record->event.pressed) {
        shift_interrupted[0] = false;
        scs_timer[0] = timer_read ();
        register_mods(MOD_BIT(KC_LSFT));
      }
      else {
        #ifdef DISABLE_SPACE_CADET_ROLLOVER
          if (get_mods() & MOD_BIT(KC_RSFT)) {
            shift_interrupted[0] = true;
            shift_interrupted[1] = true;
          }
        #endif
        if (!shift_interrupted[0] && timer_elapsed(scs_timer[0]) < TAPPING_TERM) {
          register_code(LSPO_KEY);
          unregister_code(LSPO_KEY);
        }
        unregister_mods(MOD_BIT(KC_LSFT));
      }
      return false;
      // break;
    }

    case KC_RSPC: {
      if (record->event.pressed) {
        shift_interrupted[1] = false;
        scs_timer[1] = timer_read ();
        register_mods(MOD_BIT(KC_RSFT));
      }
      else {
        #ifdef DISABLE_SPACE_CADET_ROLLOVER
          if (get_mods() & MOD_BIT(KC_LSFT)) {
            shift_interrupted[0] = true;
            shift_interrupted[1] = true;
          }
        #endif
        if (!shift_interrupted[1] && timer_elapsed(scs_timer[1]) < TAPPING_TERM) {
          register_code(RSPC_KEY);
          unregister_code(RSPC_KEY);
        }
        unregister_mods(MOD_BIT(KC_RSFT));
      }
      return false;
      // break;
    }
    default: {
      shift_interrupted[0] = true;
      shift_interrupted[1] = true;
      break;
    }
  }

  return process_action_kb(record);
}

const bool ascii_to_qwerty_shift_lut[0x80] PROGMEM = {
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 1, 1, 1, 1, 1, 1, 0,
    1, 1, 1, 1, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 1, 0, 1, 0, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 0, 0, 0, 1, 1,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 1, 1, 0
};

const uint8_t ascii_to_qwerty_keycode_lut[0x80] PROGMEM = {
    0, 0, 0, 0, 0, 0, 0, 0,
    KC_BSPC, KC_TAB, KC_ENT, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, KC_ESC, 0, 0, 0, 0,
    KC_SPC, KC_1, KC_QUOT, KC_3, KC_4, KC_5, KC_7, KC_QUOT,
    KC_9, KC_0, KC_8, KC_EQL, KC_COMM, KC_MINS, KC_DOT, KC_SLSH,
    KC_0, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7,
    KC_8, KC_9, KC_SCLN, KC_SCLN, KC_COMM, KC_EQL, KC_DOT, KC_SLSH,
    KC_2, KC_A, KC_B, KC_C, KC_D, KC_E, KC_F, KC_G,
    KC_H, KC_I, KC_J, KC_K, KC_L, KC_M, KC_N, KC_O,
    KC_P, KC_Q, KC_R, KC_S, KC_T, KC_U, KC_V, KC_W,
    KC_X, KC_Y, KC_Z, KC_LBRC, KC_BSLS, KC_RBRC, KC_6, KC_MINS,
    KC_GRV, KC_A, KC_B, KC_C, KC_D, KC_E, KC_F, KC_G,
    KC_H, KC_I, KC_J, KC_K, KC_L, KC_M, KC_N, KC_O,
    KC_P, KC_Q, KC_R, KC_S, KC_T, KC_U, KC_V, KC_W,
    KC_X, KC_Y, KC_Z, KC_LBRC, KC_BSLS, KC_RBRC, KC_GRV, KC_DEL
};

/* for users whose OSes are set to Colemak */
#if 0
#include "keymap_colemak.h"

const bool ascii_to_colemak_shift_lut[0x80] PROGMEM = {
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 1, 1, 1, 1, 1, 1, 0,
    1, 1, 1, 1, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 1, 0, 1, 0, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 0, 0, 0, 1, 1,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 1, 1, 0
};

const uint8_t ascii_to_colemak_keycode_lut[0x80] PROGMEM = {
    0, 0, 0, 0, 0, 0, 0, 0,
    KC_BSPC, KC_TAB, KC_ENT, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, KC_ESC, 0, 0, 0, 0,
    KC_SPC, KC_1, KC_QUOT, KC_3, KC_4, KC_5, KC_7, KC_QUOT,
    KC_9, KC_0, KC_8, KC_EQL, KC_COMM, KC_MINS, KC_DOT, KC_SLSH,
    KC_0, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7,
    KC_8, KC_9, CM_SCLN, CM_SCLN, KC_COMM, KC_EQL, KC_DOT, KC_SLSH,
    KC_2, CM_A, CM_B, CM_C, CM_D, CM_E, CM_F, CM_G,
    CM_H, CM_I, CM_J, CM_K, CM_L, CM_M, CM_N, CM_O,
    CM_P, CM_Q, CM_R, CM_S, CM_T, CM_U, CM_V, CM_W,
    CM_X, CM_Y, CM_Z, KC_LBRC, KC_BSLS, KC_RBRC, KC_6, KC_MINS,
    KC_GRV, CM_A, CM_B, CM_C, CM_D, CM_E, CM_F, CM_G,
    CM_H, CM_I, CM_J, CM_K, CM_L, CM_M, CM_N, CM_O,
    CM_P, CM_Q, CM_R, CM_S, CM_T, CM_U, CM_V, CM_W,
    CM_X, CM_Y, CM_Z, KC_LBRC, KC_BSLS, KC_RBRC, KC_GRV, KC_DEL
};

#endif

void send_string(const char *str) {
    while (1) {
        uint8_t keycode;
        uint8_t ascii_code = pgm_read_byte(str);
        if (!ascii_code) break;
        keycode = pgm_read_byte(&ascii_to_qwerty_keycode_lut[ascii_code]);
        if (pgm_read_byte(&ascii_to_qwerty_shift_lut[ascii_code])) {
            register_code(KC_LSFT);
            register_code(keycode);
            unregister_code(keycode);
            unregister_code(KC_LSFT);
        }
        else {
            register_code(keycode);
            unregister_code(keycode);
        }
        ++str;
    }
}

void update_tri_layer(uint8_t layer1, uint8_t layer2, uint8_t layer3) {
  if (IS_LAYER_ON(layer1) && IS_LAYER_ON(layer2)) {
    layer_on(layer3);
  } else {
    layer_off(layer3);
  }
}

void tap_random_base64(void) {
  #if defined(__AVR_ATmega32U4__)
    uint8_t key = (TCNT0 + TCNT1 + TCNT3 + TCNT4) % 64;
  #else
    uint8_t key = rand() % 64;
  #endif
  switch (key) {
    case 0 ... 25:
      register_code(KC_LSFT);
      register_code(key + KC_A);
      unregister_code(key + KC_A);
      unregister_code(KC_LSFT);
      break;
    case 26 ... 51:
      register_code(key - 26 + KC_A);
      unregister_code(key - 26 + KC_A);
      break;
    case 52:
      register_code(KC_0);
      unregister_code(KC_0);
      break;
    case 53 ... 61:
      register_code(key - 53 + KC_1);
      unregister_code(key - 53 + KC_1);
      break;
    case 62:
      register_code(KC_LSFT);
      register_code(KC_EQL);
      unregister_code(KC_EQL);
      unregister_code(KC_LSFT);
      break;
    case 63:
      register_code(KC_SLSH);
      unregister_code(KC_SLSH);
      break;
  }
}

void matrix_init_quantum() {
  #ifdef BACKLIGHT_ENABLE
    backlight_init_ports();
  #endif
  matrix_init_kb();
}

void matrix_scan_quantum() {
  #ifdef AUDIO_ENABLE
    matrix_scan_music();
  #endif

  #ifdef TAP_DANCE_ENABLE
    matrix_scan_tap_dance();
  #endif

  #ifdef COMBO_ENABLE
    matrix_scan_combo();
  #endif

  #if defined(BACKLIGHT_ENABLE) && defined(BACKLIGHT_PIN)
    backlight_task();
  #endif

  matrix_scan_kb();
}

#if defined(BACKLIGHT_ENABLE) && defined(BACKLIGHT_PIN)

static const uint8_t backlight_pin = BACKLIGHT_PIN;

#if BACKLIGHT_PIN == B7
#  define COM1x1 COM1C1
#  define OCR1x  OCR1C
#elif BACKLIGHT_PIN == B6
#  define COM1x1 COM1B1
#  define OCR1x  OCR1B
#elif BACKLIGHT_PIN == B5
#  define COM1x1 COM1A1
#  define OCR1x  OCR1A
#else
#  define NO_BACKLIGHT_CLOCK
#endif

#ifndef BACKLIGHT_ON_STATE
#define BACKLIGHT_ON_STATE 0
#endif

__attribute__ ((weak))
void backlight_init_ports(void)
{

  // Setup backlight pin as output and output to on state.
  // DDRx |= n
  _SFR_IO8((backlight_pin >> 4) + 1) |= _BV(backlight_pin & 0xF);
  #if BACKLIGHT_ON_STATE == 0
    // PORTx &= ~n
    _SFR_IO8((backlight_pin >> 4) + 2) &= ~_BV(backlight_pin & 0xF);
  #else
    // PORTx |= n
    _SFR_IO8((backlight_pin >> 4) + 2) |= _BV(backlight_pin & 0xF);
  #endif

  #ifndef NO_BACKLIGHT_CLOCK
    // Use full 16-bit resolution.
    ICR1 = 0xFFFF;

    // I could write a wall of text here to explain... but TL;DW
    // Go read the ATmega32u4 datasheet.
    // And this: http://blog.saikoled.com/post/43165849837/secret-konami-cheat-code-to-high-resolution-pwm-on

    // Pin PB7 = OCR1C (Timer 1, Channel C)
    // Compare Output Mode = Clear on compare match, Channel C = COM1C1=1 COM1C0=0
    // (i.e. start high, go low when counter matches.)
    // WGM Mode 14 (Fast PWM) = WGM13=1 WGM12=1 WGM11=1 WGM10=0
    // Clock Select = clk/1 (no prescaling) = CS12=0 CS11=0 CS10=1

    TCCR1A = _BV(COM1x1) | _BV(WGM11); // = 0b00001010;
    TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10); // = 0b00011001;
  #endif

  backlight_init();
  #ifdef BACKLIGHT_BREATHING
    breathing_defaults();
  #endif
}

__attribute__ ((weak))
void backlight_set(uint8_t level)
{
  // Prevent backlight blink on lowest level
  // #if BACKLIGHT_ON_STATE == 0
  //   // PORTx &= ~n
  //   _SFR_IO8((backlight_pin >> 4) + 2) &= ~_BV(backlight_pin & 0xF);
  // #else
  //   // PORTx |= n
  //   _SFR_IO8((backlight_pin >> 4) + 2) |= _BV(backlight_pin & 0xF);
  // #endif

  if ( level == 0 ) {
    #ifndef NO_BACKLIGHT_CLOCK
      // Turn off PWM control on backlight pin, revert to output low.
      TCCR1A &= ~(_BV(COM1x1));
      OCR1x = 0x0;
    #else
      // #if BACKLIGHT_ON_STATE == 0
      //   // PORTx |= n
      //   _SFR_IO8((backlight_pin >> 4) + 2) |= _BV(backlight_pin & 0xF);
      // #else
      //   // PORTx &= ~n
      //   _SFR_IO8((backlight_pin >> 4) + 2) &= ~_BV(backlight_pin & 0xF);
      // #endif
    #endif
  } 
  #ifndef NO_BACKLIGHT_CLOCK
    else if ( level == BACKLIGHT_LEVELS ) {
      // Turn on PWM control of backlight pin
      TCCR1A |= _BV(COM1x1);
      // Set the brightness
      OCR1x = 0xFFFF;
    } 
    else {
      // Turn on PWM control of backlight pin
      TCCR1A |= _BV(COM1x1);
      // Set the brightness
      OCR1x = 0xFFFF >> ((BACKLIGHT_LEVELS - level) * ((BACKLIGHT_LEVELS + 1) / 2));
    }
  #endif

  #ifdef BACKLIGHT_BREATHING
    breathing_intensity_default();
  #endif
}

uint8_t backlight_tick = 0;

void backlight_task(void) {
  #ifdef NO_BACKLIGHT_CLOCK
  if ((0xFFFF >> ((BACKLIGHT_LEVELS - backlight_config.level) * ((BACKLIGHT_LEVELS + 1) / 2))) & (1 << backlight_tick)) { 
    #if BACKLIGHT_ON_STATE == 0
      // PORTx &= ~n
      _SFR_IO8((backlight_pin >> 4) + 2) &= ~_BV(backlight_pin & 0xF);
    #else
      // PORTx |= n
      _SFR_IO8((backlight_pin >> 4) + 2) |= _BV(backlight_pin & 0xF);
    #endif
  } else {
    #if BACKLIGHT_ON_STATE == 0
      // PORTx |= n
      _SFR_IO8((backlight_pin >> 4) + 2) |= _BV(backlight_pin & 0xF);
    #else
      // PORTx &= ~n
      _SFR_IO8((backlight_pin >> 4) + 2) &= ~_BV(backlight_pin & 0xF);
    #endif
  }
  backlight_tick = (backlight_tick + 1) % 16;
  #endif
}

#ifdef BACKLIGHT_BREATHING

#define BREATHING_NO_HALT  0
#define BREATHING_HALT_OFF 1
#define BREATHING_HALT_ON  2

static uint8_t breath_intensity;
static uint8_t breath_speed;
static uint16_t breathing_index;
static uint8_t breathing_halt;

void breathing_enable(void)
{
    if (get_backlight_level() == 0)
    {
        breathing_index = 0;
    }
    else
    {
        // Set breathing_index to be at the midpoint (brightest point)
        breathing_index = 0x20 << breath_speed;
    }

    breathing_halt = BREATHING_NO_HALT;

    // Enable breathing interrupt
    TIMSK1 |= _BV(OCIE1A);
}

void breathing_pulse(void)
{
    if (get_backlight_level() == 0)
    {
        breathing_index = 0;
    }
    else
    {
        // Set breathing_index to be at the midpoint + 1 (brightest point)
        breathing_index = 0x21 << breath_speed;
    }

    breathing_halt = BREATHING_HALT_ON;

    // Enable breathing interrupt
    TIMSK1 |= _BV(OCIE1A);
}

void breathing_disable(void)
{
    // Disable breathing interrupt
    TIMSK1 &= ~_BV(OCIE1A);
    backlight_set(get_backlight_level());
}

void breathing_self_disable(void)
{
    if (get_backlight_level() == 0)
    {
        breathing_halt = BREATHING_HALT_OFF;
    }
    else
    {
        breathing_halt = BREATHING_HALT_ON;
    }

    //backlight_set(get_backlight_level());
}

void breathing_toggle(void)
{
    if (!is_breathing())
    {
        if (get_backlight_level() == 0)
        {
            breathing_index = 0;
        }
        else
        {
            // Set breathing_index to be at the midpoint + 1 (brightest point)
            breathing_index = 0x21 << breath_speed;
        }

        breathing_halt = BREATHING_NO_HALT;
    }

    // Toggle breathing interrupt
    TIMSK1 ^= _BV(OCIE1A);

    // Restore backlight level
    if (!is_breathing())
    {
        backlight_set(get_backlight_level());
    }
}

bool is_breathing(void)
{
    return (TIMSK1 && _BV(OCIE1A));
}

void breathing_intensity_default(void)
{
    //breath_intensity = (uint8_t)((uint16_t)100 * (uint16_t)get_backlight_level() / (uint16_t)BACKLIGHT_LEVELS);
    breath_intensity = ((BACKLIGHT_LEVELS - get_backlight_level()) * ((BACKLIGHT_LEVELS + 1) / 2));
}

void breathing_intensity_set(uint8_t value)
{
    breath_intensity = value;
}

void breathing_speed_default(void)
{
    breath_speed = 4;
}

void breathing_speed_set(uint8_t value)
{
    bool is_breathing_now = is_breathing();
    uint8_t old_breath_speed = breath_speed;

    if (is_breathing_now)
    {
        // Disable breathing interrupt
        TIMSK1 &= ~_BV(OCIE1A);
    }

    breath_speed = value;

    if (is_breathing_now)
    {
        // Adjust index to account for new speed
        breathing_index = (( (uint8_t)( (breathing_index) >> old_breath_speed ) ) & 0x3F) << breath_speed;

        // Enable breathing interrupt
        TIMSK1 |= _BV(OCIE1A);
    }

}

void breathing_speed_inc(uint8_t value)
{
    if ((uint16_t)(breath_speed - value) > 10 )
    {
        breathing_speed_set(0);
    }
    else
    {
        breathing_speed_set(breath_speed - value);
    }
}

void breathing_speed_dec(uint8_t value)
{
    if ((uint16_t)(breath_speed + value) > 10 )
    {
        breathing_speed_set(10);
    }
    else
    {
        breathing_speed_set(breath_speed + value);
    }
}

void breathing_defaults(void)
{
    breathing_intensity_default();
    breathing_speed_default();
    breathing_halt = BREATHING_NO_HALT;
}

/* Breathing Sleep LED brighness(PWM On period) table
 * (64[steps] * 4[duration]) / 64[PWM periods/s] = 4 second breath cycle
 *
 * http://www.wolframalpha.com/input/?i=%28sin%28+x%2F64*pi%29**8+*+255%2C+x%3D0+to+63
 * (0..63).each {|x| p ((sin(x/64.0*PI)**8)*255).to_i }
 */
static const uint8_t breathing_table[64] PROGMEM = {
  0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   1,   2,   4,   6,  10,
 15,  23,  32,  44,  58,  74,  93, 113, 135, 157, 179, 199, 218, 233, 245, 252,
255, 252, 245, 233, 218, 199, 179, 157, 135, 113,  93,  74,  58,  44,  32,  23,
 15,  10,   6,   4,   2,   1,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
};

ISR(TIMER1_COMPA_vect)
{
    // OCR1x = (pgm_read_byte(&breathing_table[ ( (uint8_t)( (breathing_index++) >> breath_speed ) ) & 0x3F ] )) * breath_intensity;


    uint8_t local_index = ( (uint8_t)( (breathing_index++) >> breath_speed ) ) & 0x3F;

    if (((breathing_halt == BREATHING_HALT_ON) && (local_index == 0x20)) || ((breathing_halt == BREATHING_HALT_OFF) && (local_index == 0x3F)))
    {
        // Disable breathing interrupt
        TIMSK1 &= ~_BV(OCIE1A);
    }

    OCR1x = (uint16_t)(((uint16_t)pgm_read_byte(&breathing_table[local_index]) * 257)) >> breath_intensity;

}



#endif // breathing

#else // backlight

__attribute__ ((weak))
void backlight_init_ports(void)
{

}

__attribute__ ((weak))
void backlight_set(uint8_t level)
{

}

#endif // backlight


// Functions for spitting out values
//

void send_dword(uint32_t number) { // this might not actually work
    uint16_t word = (number >> 16);
    send_word(word);