summaryrefslogtreecommitdiff
path: root/quantum/rgb_matrix.c
blob: 70ad1a17833dfd0ffb5ccdcb2c06aee4f127ae4a (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
/* Copyright 2017 Jason Williams
 * Copyright 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 "rgb_matrix.h"
#include <avr/io.h>
#include "i2c_master.h"
#include <util/delay.h>
#include <avr/interrupt.h>
#include "progmem.h"
#include "config.h"
#include "eeprom.h"
#include "lufa.h"
#include <math.h>

rgb_config_t rgb_matrix_config;

#ifndef RGB_DISABLE_AFTER_TIMEOUT
    #define RGB_DISABLE_AFTER_TIMEOUT 0
#endif

#ifndef RGB_DISABLE_WHEN_USB_SUSPENDED
    #define RGB_DISABLE_WHEN_USB_SUSPENDED false
#endif

#ifndef EECONFIG_RGB_MATRIX
    #define EECONFIG_RGB_MATRIX EECONFIG_RGBLIGHT
#endif

#if !defined(RGB_MATRIX_MAXIMUM_BRIGHTNESS) || RGB_MATRIX_MAXIMUM_BRIGHTNESS > 255
    #define RGB_MATRIX_MAXIMUM_BRIGHTNESS 255
#endif

bool g_suspend_state = false;

// Global tick at 20 Hz
uint32_t g_tick = 0;

// Ticks since this key was last hit.
uint8_t g_key_hit[DRIVER_LED_TOTAL];

// Ticks since any key was last hit.
uint32_t g_any_key_hit = 0;

#ifndef PI
#define PI 3.14159265
#endif

uint32_t eeconfig_read_rgb_matrix(void) {
  return eeprom_read_dword(EECONFIG_RGB_MATRIX);
}
void eeconfig_update_rgb_matrix(uint32_t val) {
  eeprom_update_dword(EECONFIG_RGB_MATRIX, val);
}
void eeconfig_update_rgb_matrix_default(void) {
  dprintf("eeconfig_update_rgb_matrix_default\n");
  rgb_matrix_config.enable = 1;
  rgb_matrix_config.mode = RGB_MATRIX_CYCLE_LEFT_RIGHT;
  rgb_matrix_config.hue = 0;
  rgb_matrix_config.sat = 255;
  rgb_matrix_config.val = RGB_MATRIX_MAXIMUM_BRIGHTNESS;
  rgb_matrix_config.speed = 0;
  eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
}
void eeconfig_debug_rgb_matrix(void) {
  dprintf("rgb_matrix_config eprom\n");
  dprintf("rgb_matrix_config.enable = %d\n", rgb_matrix_config.enable);
  dprintf("rgb_matrix_config.mode = %d\n", rgb_matrix_config.mode);
  dprintf("rgb_matrix_config.hue = %d\n", rgb_matrix_config.hue);
  dprintf("rgb_matrix_config.sat = %d\n", rgb_matrix_config.sat);
  dprintf("rgb_matrix_config.val = %d\n", rgb_matrix_config.val);
  dprintf("rgb_matrix_config.speed = %d\n", rgb_matrix_config.speed);
}

// Last led hit
#define LED_HITS_TO_REMEMBER 8
uint8_t g_last_led_hit[LED_HITS_TO_REMEMBER] = {255};
uint8_t g_last_led_count = 0;

void map_row_column_to_led( uint8_t row, uint8_t column, uint8_t *led_i, uint8_t *led_count) {
    rgb_led led;
    *led_count = 0;

    for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
        // map_index_to_led(i, &led);
        led = g_rgb_leds[i];
        if (row == led.matrix_co.row && column == led.matrix_co.col) {
            led_i[*led_count] = i;
            (*led_count)++;
        }
    }
}

void rgb_matrix_update_pwm_buffers(void) {
    IS31_update_pwm_buffers( DRIVER_ADDR_1, DRIVER_ADDR_2 );
    IS31_update_led_control_registers( DRIVER_ADDR_1, DRIVER_ADDR_2 );
}

void rgb_matrix_set_color( int index, uint8_t red, uint8_t green, uint8_t blue ) {
    IS31_set_color( index, red, green, blue );
}

void rgb_matrix_set_color_all( uint8_t red, uint8_t green, uint8_t blue ) {
    IS31_set_color_all( red, green, blue );
}

bool process_rgb_matrix(uint16_t keycode, keyrecord_t *record) {
    if ( record->event.pressed ) {
        uint8_t led[8], led_count;
        map_row_column_to_led(record->event.key.row, record->event.key.col, led, &led_count);
        if (led_count > 0) {
            for (uint8_t i = LED_HITS_TO_REMEMBER; i > 1; i--) {
                g_last_led_hit[i - 1] = g_last_led_hit[i - 2];
            }
            g_last_led_hit[0] = led[0];
            g_last_led_count = MIN(LED_HITS_TO_REMEMBER, g_last_led_count + 1);
        }
        for(uint8_t i = 0; i < led_count; i++)
            g_key_hit[led[i]] = 0;
        g_any_key_hit = 0;
    } else {
        #ifdef RGB_MATRIX_KEYRELEASES
        uint8_t led[8], led_count;
        map_row_column_to_led(record->event.key.row, record->event.key.col, led, &led_count);
        for(uint8_t i = 0; i < led_count; i++)
            g_key_hit[led[i]] = 255;

        g_any_key_hit = 255;
        #endif
    }
    return true;
}

void rgb_matrix_set_suspend_state(bool state) {
    g_suspend_state = state;
}

void rgb_matrix_test(void) {
    // Mask out bits 4 and 5
    // Increase the factor to make the test animation slower (and reduce to make it faster)
    uint8_t factor = 10;
    switch ( (g_tick & (0b11 << factor)) >> factor )
    {
        case 0:
        {
            rgb_matrix_set_color_all( 20, 0, 0 );
            break;
        }
        case 1:
        {
            rgb_matrix_set_color_all( 0, 20, 0 );
            break;
        }
        case 2:
        {
            rgb_matrix_set_color_all( 0, 0, 20 );
            break;
        }
        case 3:
        {
            rgb_matrix_set_color_all( 20, 20, 20 );
            break;
        }
    }
}

// This tests the LEDs
// Note that it will change the LED control registers
// in the LED drivers, and leave them in an invalid
// state for other backlight effects.
// ONLY USE THIS FOR TESTING LEDS!
void rgb_matrix_single_LED_test(void) {
    static uint8_t color = 0; // 0,1,2 for R,G,B
    static uint8_t row = 0;
    static uint8_t column = 0;

    static uint8_t tick = 0;
    tick++;

    if ( tick > 2 )
    {
        tick = 0;
        column++;
    }
    if ( column > MATRIX_COLS )
    {
        column = 0;
        row++;
    }
    if ( row > MATRIX_ROWS )
    {
        row = 0;
        color++;
    }
    if ( color > 2 )
    {
        color = 0;
    }

    uint8_t led[8], led_count;
    map_row_column_to_led(row,column,led,&led_count);
    for(uint8_t i = 0; i < led_count; i++) {
        rgb_matrix_set_color_all( 40, 40, 40 );
        rgb_matrix_test_led( led[i], color==0, color==1, color==2 );
    }
}

// All LEDs off
void rgb_matrix_all_off(void) {
    rgb_matrix_set_color_all( 0, 0, 0 );
}

// Solid color
void rgb_matrix_solid_color(void) {
    HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
    RGB rgb = hsv_to_rgb( hsv );
    rgb_matrix_set_color_all( rgb.r, rgb.g, rgb.b );
}

void rgb_matrix_solid_reactive(void) {
	// Relies on hue being 8-bit and wrapping
	for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
	{
		uint16_t offset2 = g_key_hit[i]<<2;
		offset2 = (offset2<=130) ? (130-offset2) : 0;

		HSV hsv = { .h = rgb_matrix_config.hue+offset2, .s = 255, .v = rgb_matrix_config.val };
		RGB rgb = hsv_to_rgb( hsv );
		rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
	}
}

// alphas = color1, mods = color2
void rgb_matrix_alphas_mods(void) {

    RGB rgb1 = hsv_to_rgb( (HSV){ .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val } );
    RGB rgb2 = hsv_to_rgb( (HSV){ .h = (rgb_matrix_config.hue + 180) % 360, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val } );

    rgb_led led;
    for (int i = 0; i < DRIVER_LED_TOTAL; i++) {
        led = g_rgb_leds[i];
        if ( led.matrix_co.raw < 0xFF ) {
            if ( led.modifier )
            {
                rgb_matrix_set_color( i, rgb2.r, rgb2.g, rgb2.b );
            }
            else
            {
                rgb_matrix_set_color( i, rgb1.r, rgb1.g, rgb1.b );
            }
        }
    }
}

void rgb_matrix_gradient_up_down(void) {
    int16_t h1 = rgb_matrix_config.hue;
    int16_t h2 = (rgb_matrix_config.hue + 180) % 360;
    int16_t deltaH = h2 - h1;

    // Take the shortest path between hues
    if ( deltaH > 127 )
    {
        deltaH -= 256;
    }
    else if ( deltaH < -127 )
    {
        deltaH += 256;
    }
    // Divide delta by 4, this gives the delta per row
    deltaH /= 4;

    int16_t s1 = rgb_matrix_config.sat;
    int16_t s2 = rgb_matrix_config.hue;
    int16_t deltaS = ( s2 - s1 ) / 4;

    HSV hsv = { .h = 0, .s = 255, .v = rgb_matrix_config.val };
    RGB rgb;
    Point point;
    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
    {
        // map_led_to_point( i, &point );
        point = g_rgb_leds[i].point;
        // The y range will be 0..64, map this to 0..4
        uint8_t y = (point.y>>4);
        // Relies on hue being 8-bit and wrapping
        hsv.h = rgb_matrix_config.hue + ( deltaH * y );
        hsv.s = rgb_matrix_config.sat + ( deltaS * y );
        rgb = hsv_to_rgb( hsv );
        rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
    }
}

void rgb_matrix_raindrops(bool initialize) {
    int16_t h1 = rgb_matrix_config.hue;
    int16_t h2 = (rgb_matrix_config.hue + 180) % 360;
    int16_t deltaH = h2 - h1;
    deltaH /= 4;

    // Take the shortest path between hues
    if ( deltaH > 127 )
    {
        deltaH -= 256;
    }
    else if ( deltaH < -127 )
    {
        deltaH += 256;
    }

    int16_t s1 = rgb_matrix_config.sat;
    int16_t s2 = rgb_matrix_config.sat;
    int16_t deltaS = ( s2 - s1 ) / 4;

    HSV hsv;
    RGB rgb;

    // Change one LED every tick, make sure speed is not 0
    uint8_t led_to_change = ( g_tick & ( 0x0A / (rgb_matrix_config.speed == 0 ? 1 : rgb_matrix_config.speed) ) ) == 0 ? rand() % (DRIVER_LED_TOTAL) : 255;

    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
    {
        // If initialize, all get set to random colors
        // If not, all but one will stay the same as before.
        if ( initialize || i == led_to_change )
        {
            hsv.h = h1 + ( deltaH * ( rand() & 0x03 ) );
            hsv.s = s1 + ( deltaS * ( rand() & 0x03 ) );
            // Override brightness with global brightness control
            hsv.v = rgb_matrix_config.val;

            rgb = hsv_to_rgb( hsv );
            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
        }
    }
}

void rgb_matrix_cycle_all(void) {
    uint8_t offset = ( g_tick << rgb_matrix_config.speed ) & 0xFF;

    rgb_led led;

    // Relies on hue being 8-bit and wrapping
    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
    {
        // map_index_to_led(i, &led);
        led = g_rgb_leds[i];
        if (led.matrix_co.raw < 0xFF) {
            uint16_t offset2 = g_key_hit[i]<<2;
            offset2 = (offset2<=63) ? (63-offset2) : 0;

            HSV hsv = { .h = offset+offset2, .s = 255, .v = rgb_matrix_config.val };
            RGB rgb = hsv_to_rgb( hsv );
            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
        }
    }
}

void rgb_matrix_cycle_left_right(void) {
    uint8_t offset = ( g_tick << rgb_matrix_config.speed ) & 0xFF;
    HSV hsv = { .h = 0, .s = 255, .v = rgb_matrix_config.val };
    RGB rgb;
    Point point;
    rgb_led led;
    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
    {
        // map_index_to_led(i, &led);
        led = g_rgb_leds[i];
        if (led.matrix_co.raw < 0xFF) {
            uint16_t offset2 = g_key_hit[i]<<2;
            offset2 = (offset2<=63) ? (63-offset2) : 0;

            // map_led_to_point( i, &point );
            point = g_rgb_leds[i].point;
            // Relies on hue being 8-bit and wrapping
            hsv.h = point.x + offset + offset2;
            rgb = hsv_to_rgb( hsv );
            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
        }
    }
}

void rgb_matrix_cycle_up_down(void) {
    uint8_t offset = ( g_tick << rgb_matrix_config.speed ) & 0xFF;
    HSV hsv = { .h = 0, .s = 255, .v = rgb_matrix_config.val };
    RGB rgb;
    Point point;
    rgb_led led;
    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
    {
        // map_index_to_led(i, &led);
        led = g_rgb_leds[i];
        if (led.matrix_co.raw < 0xFF) {
            uint16_t offset2 = g_key_hit[i]<<2;
            offset2 = (offset2<=63) ? (63-offset2) : 0;

            // map_led_to_point( i, &point );
            point = g_rgb_leds[i].point;
            // Relies on hue being 8-bit and wrapping
            hsv.h = point.y + offset + offset2;
            rgb = hsv_to_rgb( hsv );
            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
        }
    }
}


void rgb_matrix_dual_beacon(void) {
    HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
    RGB rgb;
    rgb_led led;
    for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
        led = g_rgb_leds[i];
        hsv.h = ((led.point.y - 32.0)* cos(g_tick * PI / 128) / 32 + (led.point.x - 112.0) * sin(g_tick * PI / 128) / (112)) * (180) + rgb_matrix_config.hue;
        rgb = hsv_to_rgb( hsv );
        rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
    }
}

void rgb_matrix_rainbow_beacon(void) {
    HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
    RGB rgb;
    rgb_led led;
    for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
        led = g_rgb_leds[i];
        hsv.h = (1.5 * (rgb_matrix_config.speed == 0 ? 1 : rgb_matrix_config.speed)) * (led.point.y - 32.0)* cos(g_tick * PI / 128) + (1.5 * (rgb_matrix_config.speed == 0 ? 1 : rgb_matrix_config.speed)) * (led.point.x - 112.0) * sin(g_tick * PI / 128) + rgb_matrix_config.hue;
        rgb = hsv_to_rgb( hsv );
        rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
    }
}

void rgb_matrix_rainbow_pinwheels(void) {
    HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
    RGB rgb;
    rgb_led led;
    for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
        led = g_rgb_leds[i];
        hsv.h = (2 * (rgb_matrix_config.speed == 0 ? 1 : rgb_matrix_config.speed)) * (led.point.y - 32.0)* cos(g_tick * PI / 128) + (2 * (rgb_matrix_config.speed == 0 ? 1 : rgb_matrix_config.speed)) * (66 - abs(led.point.x - 112.0)) * sin(g_tick * PI / 128) + rgb_matrix_config.hue;
        rgb = hsv_to_rgb( hsv );
        rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
    }
}

void rgb_matrix_rainbow_moving_chevron(void) {
    HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
    RGB rgb;
    rgb_led led;
    for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
        led = g_rgb_leds[i];
        // uint8_t r = g_tick;
        uint8_t r = 32;
        hsv.h = (1.5 * (rgb_matrix_config.speed == 0 ? 1 : rgb_matrix_config.speed)) * abs(led.point.y - 32.0)* sin(r * PI / 128) + (1.5 * (rgb_matrix_config.speed == 0 ? 1 : rgb_matrix_config.speed)) * (led.point.x - (g_tick / 256.0 * 224)) * cos(r * PI / 128) + rgb_matrix_config.hue;
        rgb = hsv_to_rgb( hsv );
        rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
    }
}


void rgb_matrix_jellybean_raindrops( bool initialize ) {
    HSV hsv;
    RGB rgb;

    // Change one LED every tick, make sure speed is not 0
    uint8_t led_to_change = ( g_tick & ( 0x0A / (rgb_matrix_config.speed == 0 ? 1 : rgb_matrix_config.speed) ) ) == 0 ? rand() % (DRIVER_LED_TOTAL) : 255;

    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
    {
        // If initialize, all get set to random colors
        // If not, all but one will stay the same as before.
        if ( initialize || i == led_to_change )
        {
            hsv.h = rand() & 0xFF;
            hsv.s = rand() & 0xFF;
            // Override brightness with global brightness control
            hsv.v = rgb_matrix_config.val;

            rgb = hsv_to_rgb( hsv );
            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
        }
    }
}

void rgb_matrix_multisplash(void) {
    // if (g_any_key_hit < 0xFF) {
        HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
        RGB rgb;
        rgb_led led;
        for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
            led = g_rgb_leds[i];
            uint16_t c = 0, d = 0;
            rgb_led last_led;
            // if (g_last_led_count) {
                for (uint8_t last_i = 0; last_i < g_last_led_count; last_i++) {
                    last_led = g_rgb_leds[g_last_led_hit[last_i]];
                    uint16_t dist = (uint16_t)sqrt(pow(led.point.x - last_led.point.x, 2) + pow(led.point.y - last_led.point.y, 2));
                    uint16_t effect = (g_key_hit[g_last_led_hit[last_i]] << 2) - dist;
                    c += MIN(MAX(effect, 0), 255);
                    d += 255 - MIN(MAX(effect, 0), 255);
                }
            // } else {
            //     d = 255;
            // }
            hsv.h = (rgb_matrix_config.hue + c) % 256;
            hsv.v = MAX(MIN(d, 255), 0);
            rgb = hsv_to_rgb( hsv );
            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
        }
    // } else {
        // rgb_matrix_set_color_all( 0, 0, 0 );
    // }
}


void rgb_matrix_splash(void) {
    g_last_led_count = MIN(g_last_led_count, 1);
    rgb_matrix_multisplash();
}


void rgb_matrix_solid_multisplash(void) {
    // if (g_any_key_hit < 0xFF) {
        HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
        RGB rgb;
        rgb_led led;
        for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
            led = g_rgb_leds[i];
            uint16_t d = 0;
            rgb_led last_led;
            // if (g_last_led_count) {
                for (uint8_t last_i = 0; last_i < g_last_led_count; last_i++) {
                    last_led = g_rgb_leds[g_last_led_hit[last_i]];
                    uint16_t dist = (uint16_t)sqrt(pow(led.point.x - last_led.point.x, 2) + pow(led.point.y - last_led.point.y, 2));
                    uint16_t effect = (g_key_hit[g_last_led_hit[last_i]] << 2) - dist;
                    d += 255 - MIN(MAX(effect, 0), 255);
                }
            // } else {
            //     d = 255;
            // }
            hsv.v = MAX(MIN(d, 255), 0);
            rgb = hsv_to_rgb( hsv );
            rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
        }
    // } else {
        // rgb_matrix_set_color_all( 0, 0, 0 );
    // }
}


void rgb_matrix_solid_splash(void) {
    g_last_led_count = MIN(g_last_led_count, 1);
    rgb_matrix_solid_multisplash();
}


// Needs eeprom access that we don't have setup currently

void rgb_matrix_custom(void) {
//     HSV hsv;
//     RGB rgb;
//     for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
//     {
//         backlight_get_key_color(i, &hsv);
//         // Override brightness with global brightness control
//         hsv.v = rgb_matrix_config.val;
//         rgb = hsv_to_rgb( hsv );
//         rgb_matrix_set_color( i, rgb.r, rgb.g, rgb.b );
//     }
}

void rgb_matrix_task(void) {
    static uint8_t toggle_enable_last = 255;
	if (!rgb_matrix_config.enable) {
    	rgb_matrix_all_off();
        toggle_enable_last = rgb_matrix_config.enable;
    	return;
    }
    // delay 1 second before driving LEDs or doing anything else
    static uint8_t startup_tick = 0;
    if ( startup_tick < 20 ) {
        startup_tick++;
        return;
    }

    g_tick++;

    if ( g_any_key_hit < 0xFFFFFFFF ) {
        g_any_key_hit++;
    }

    for ( int led = 0; led < DRIVER_LED_TOTAL; led++ ) {
        if ( g_key_hit[led] < 255 ) {
            if (g_key_hit[led] == 254)
                g_last_led_count = MAX(g_last_led_count - 1, 0);
            g_key_hit[led]++;
        }
    }

    // Factory default magic value
    if ( rgb_matrix_config.mode == 255 ) {
        rgb_matrix_test();
        return;
    }

    // Ideally we would also stop sending zeros to the LED driver PWM buffers
    // while suspended and just do a software shutdown. This is a cheap hack for now.
    bool suspend_backlight = ((g_suspend_state && RGB_DISABLE_WHEN_USB_SUSPENDED) ||
            (RGB_DISABLE_AFTER_TIMEOUT > 0 && g_any_key_hit > RGB_DISABLE_AFTER_TIMEOUT * 60 * 20));
    uint8_t effect = suspend_backlight ? 0 : rgb_matrix_config.mode;

    // Keep track of the effect used last time,
    // detect change in effect, so each effect can
    // have an optional initialization.
    static uint8_t effect_last = 255;
    bool initialize = (effect != effect_last) || (rgb_matrix_config.enable != toggle_enable_last);
    effect_last = effect;
    toggle_enable_last = rgb_matrix_config.enable;

    // this gets ticked at 20 Hz.
    // each effect can opt to do calculations
    // and/or request PWM buffer updates.
    switch ( effect ) {
        case RGB_MATRIX_SOLID_COLOR:
            rgb_matrix_solid_color();
            break;
        case RGB_MATRIX_ALPHAS_MODS:
            rgb_matrix_alphas_mods();
            break;
        case RGB_MATRIX_DUAL_BEACON:
            rgb_matrix_dual_beacon();
            break;
        case RGB_MATRIX_GRADIENT_UP_DOWN:
            rgb_matrix_gradient_up_down();
            break;
        case RGB_MATRIX_RAINDROPS:
            rgb_matrix_raindrops( initialize );
            break;
        case RGB_MATRIX_CYCLE_ALL:
            rgb_matrix_cycle_all();
            break;
        case RGB_MATRIX_CYCLE_LEFT_RIGHT:
            rgb_matrix_cycle_left_right();
            break;
        case RGB_MATRIX_CYCLE_UP_DOWN:
            rgb_matrix_cycle_up_down();
            break;
        case RGB_MATRIX_RAINBOW_BEACON:
            rgb_matrix_rainbow_beacon();
            break;
        case RGB_MATRIX_RAINBOW_PINWHEELS:
            rgb_matrix_rainbow_pinwheels();
            break;
        case RGB_MATRIX_RAINBOW_MOVING_CHEVRON:
            rgb_matrix_rainbow_moving_chevron();
            break;
        case RGB_MATRIX_JELLYBEAN_RAINDROPS:
            rgb_matrix_jellybean_raindrops( initialize );
            break;
        #ifdef RGB_MATRIX_KEYPRESSES
            case RGB_MATRIX_SOLID_REACTIVE:
                rgb_matrix_solid_reactive();
                break;
            case RGB_MATRIX_SPLASH:
                rgb_matrix_splash();
                break;
            case RGB_MATRIX_MULTISPLASH:
                rgb_matrix_multisplash();
                break;
            case RGB_MATRIX_SOLID_SPLASH:
                rgb_matrix_solid_splash();
                break;
            case RGB_MATRIX_SOLID_MULTISPLASH:
                rgb_matrix_solid_multisplash();
                break;
        #endif
        default:
            rgb_matrix_custom();
            break;
    }

    if ( ! suspend_backlight ) {
        rgb_matrix_indicators();
    }

}

void rgb_matrix_indicators(void) {
    rgb_matrix_indicators_kb();
    rgb_matrix_indicators_user();
}

__attribute__((weak))
void rgb_matrix_indicators_kb(void) {}

__attribute__((weak))
void rgb_matrix_indicators_user(void) {}


// void rgb_matrix_set_indicator_index( uint8_t *index, uint8_t row, uint8_t column )
// {
//  if ( row >= MATRIX_ROWS )
//  {
//      // Special value, 255=none, 254=all
//      *index = row;
//  }
//  else
//  {
//      // This needs updated to something like
//      // uint8_t led[8], led_count;
//      // map_row_column_to_led(row,column,led,&led_count);
//      // for(uint8_t i = 0; i < led_count; i++)
//      map_row_column_to_led( row, column, index );
//  }
// }

void rgb_matrix_init(void) {
  rgb_matrix_setup_drivers();

  // TODO: put the 1 second startup delay here?

  // clear the key hits
  for ( int led=0; led<DRIVER_LED_TOTAL; led++ ) {
      g_key_hit[led] = 255;
  }


  if (!eeconfig_is_enabled()) {
      dprintf("rgb_matrix_init_drivers eeconfig is not enabled.\n");
      eeconfig_init();
      eeconfig_update_rgb_matrix_default();
  }
  rgb_matrix_config.raw = eeconfig_read_rgb_matrix();
  if (!rgb_matrix_config.mode) {
      dprintf("rgb_matrix_init_drivers rgb_matrix_config.mode = 0. Write default values to EEPROM.\n");
      eeconfig_update_rgb_matrix_default();
      rgb_matrix_config.raw = eeconfig_read_rgb_matrix();
  }
  eeconfig_debug_rgb_matrix(); // display current eeprom values
}

void rgb_matrix_setup_drivers(void) {
  // Initialize TWI
  i2c_init();
  IS31_init( DRIVER_ADDR_1 );
  IS31_init( DRIVER_ADDR_2 );

  for ( int index = 0; index < DRIVER_LED_TOTAL; index++ ) {
    bool enabled = true;
    // This only caches it for later
    IS31_set_led_control_register( index, enabled, enabled, enabled );
  }
  // This actually updates the LED drivers
  IS31_update_led_control_registers( DRIVER_ADDR_1, DRIVER_ADDR_2 );
}

// Deals with the messy details of incrementing an integer
uint8_t increment( uint8_t value, uint8_t step, uint8_t min, uint8_t max ) {
    int16_t new_value = value;
    new_value += step;
    return MIN( MAX( new_value, min ), max );
}

uint8_t decrement( uint8_t value, uint8_t step, uint8_t min, uint8_t max ) {
    int16_t new_value = value;
    new_value -= step;
    return MIN( MAX( new_value, min ), max );
}

// void *backlight_get_custom_key_color_eeprom_address( uint8_t led )
// {
//     // 3 bytes per color
//     return EECONFIG_RGB_MATRIX + ( led * 3 );
// }

// void backlight_get_key_color( uint8_t led, HSV *hsv )
// {
//     void *address = backlight_get_custom_key_color_eeprom_address( led );
//     hsv->h = eeprom_read_byte(address);
//     hsv->s = eeprom_read_byte(address+1);
//     hsv->v = eeprom_read_byte(address+2);
// }

// void backlight_set_key_color( uint8_t row, uint8_t column, HSV hsv )
// {
//     uint8_t led[8], led_count;
//     map_row_column_to_led(row,column,led,&led_count);
//     for(uint8_t i = 0; i < led_count; i++) {
//         if ( led[i] < DRIVER_LED_TOTAL )
//         {
//             void *address = backlight_get_custom_key_color_eeprom_address(led[i]);
//             eeprom_update_byte(address, hsv.h);
//             eeprom_update_byte(address+1, hsv.s);
//             eeprom_update_byte(address+2, hsv.v);
//         }
//     }
// }

void rgb_matrix_test_led( uint8_t index, bool red, bool green, bool blue ) {
    for ( int i=0; i<DRIVER_LED_TOTAL; i++ )
    {
        if ( i == index )
        {
            IS31_set_led_control_register( i, red, green, blue );
        }
        else
        {
            IS31_set_led_control_register( i, false, false, false );
        }
    }
}

uint32_t rgb_matrix_get_tick(void) {
    return g_tick;
}

void rgblight_toggle(void) {
	rgb_matrix_config.enable ^= 1;
    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
}

void rgblight_step(void) {
    rgb_matrix_config.mode++;
    if (rgb_matrix_config.mode >= RGB_MATRIX_EFFECT_MAX)
        rgb_matrix_config.mode = 1;
    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
}

void rgblight_step_reverse(void) {
    rgb_matrix_config.mode--;
    if (rgb_matrix_config.mode < 1)
        rgb_matrix_config.mode = RGB_MATRIX_EFFECT_MAX - 1;
    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
}

void rgblight_increase_hue(void) {
    rgb_matrix_config.hue = increment( rgb_matrix_config.hue, 8, 0, 255 );
    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
}

void rgblight_decrease_hue(void) {
    rgb_matrix_config.hue = decrement( rgb_matrix_config.hue, 8, 0, 255 );
    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
}

void rgblight_increase_sat(void) {
    rgb_matrix_config.sat = increment( rgb_matrix_config.sat, 8, 0, 255 );
    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
}

void rgblight_decrease_sat(void) {
    rgb_matrix_config.sat = decrement( rgb_matrix_config.sat, 8, 0, 255 );
    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
}

void rgblight_increase_val(void) {
    rgb_matrix_config.val = increment( rgb_matrix_config.val, 8, 0, RGB_MATRIX_MAXIMUM_BRIGHTNESS );
    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
}

void rgblight_decrease_val(void) {
    rgb_matrix_config.val = decrement( rgb_matrix_config.val, 8, 0, RGB_MATRIX_MAXIMUM_BRIGHTNESS );
    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
}

void rgblight_increase_speed(void) {
    rgb_matrix_config.speed = increment( rgb_matrix_config.speed, 1, 0, 3 );
    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);//EECONFIG needs to be increased to support this
}

void rgblight_decrease_speed(void) {
    rgb_matrix_config.speed = decrement( rgb_matrix_config.speed, 1, 0, 3 );
    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);//EECONFIG needs to be increased to support this
}

void rgblight_mode(uint8_t mode) {
    rgb_matrix_config.mode = mode;
    eeconfig_update_rgb_matrix(rgb_matrix_config.raw);
}

uint32_t rgblight_get_mode(void) {
    return rgb_matrix_config.mode;
}