summaryrefslogtreecommitdiff
path: root/tmk_core/protocol/chibios/usb_main.c
blob: 9b139b39927b258c8625996906c8e3fa1cae336d (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
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
/*
 * (c) 2015 flabberast <s3+flabbergast@sdfeu.org>
 *
 * Based on the following work:
 *  - Guillaume Duc's raw hid example (MIT License)
 *    https://github.com/guiduc/usb-hid-chibios-example
 *  - PJRC Teensy examples (MIT License)
 *    https://www.pjrc.com/teensy/usb_keyboard.html
 *  - hasu's TMK keyboard code (GPL v2 and some code Modified BSD)
 *    https://github.com/tmk/tmk_keyboard/
 *  - ChibiOS demo code (Apache 2.0 License)
 *    http://www.chibios.org
 *
 * Since some GPL'd code is used, this work is licensed under
 * GPL v2 or later.
 */

/*
 * Implementation notes:
 *
 * USBEndpointConfig - Configured using explicit order instead of struct member name.
 *   This is due to ChibiOS hal LLD differences, which is dependent on hardware,
 *   "USBv1" devices have `ep_buffers` and "OTGv1" have `in_multiplier`.
 *   Given `USBv1/hal_usb_lld.h` marks the field as "not currently used" this code file
 *   makes the assumption this is safe to avoid littering with preprocessor directives.
 */

#include <ch.h>
#include <hal.h>
#include <string.h>

#include "usb_main.h"

#include "host.h"
#include "debug.h"
#include "suspend.h"
#ifdef SLEEP_LED_ENABLE
#    include "sleep_led.h"
#    include "led.h"
#endif
#include "wait.h"
#include "usb_device_state.h"
#include "usb_descriptor.h"
#include "usb_driver.h"

#ifdef NKRO_ENABLE
#    include "keycode_config.h"

extern keymap_config_t keymap_config;
#endif

#ifdef JOYSTICK_ENABLE
#    include "joystick.h"
#endif

/* ---------------------------------------------------------
 *       Global interface variables and declarations
 * ---------------------------------------------------------
 */

#ifndef usb_lld_connect_bus
#    define usb_lld_connect_bus(usbp)
#endif

#ifndef usb_lld_disconnect_bus
#    define usb_lld_disconnect_bus(usbp)
#endif

uint8_t                keyboard_idle __attribute__((aligned(2)))     = 0;
uint8_t                keyboard_protocol __attribute__((aligned(2))) = 1;
uint8_t                keyboard_led_state                            = 0;
volatile uint16_t      keyboard_idle_count                           = 0;
static virtual_timer_t keyboard_idle_timer;
static void            keyboard_idle_timer_cb(void *arg);

report_keyboard_t keyboard_report_sent = {{0}};
#ifdef MOUSE_ENABLE
report_mouse_t mouse_report_blank = {0};
#endif /* MOUSE_ENABLE */
#ifdef EXTRAKEY_ENABLE
uint8_t extra_report_blank[3] = {0};
#endif /* EXTRAKEY_ENABLE */

/* ---------------------------------------------------------
 *            Descriptors and USB driver objects
 * ---------------------------------------------------------
 */

/* HID specific constants */
#define HID_GET_REPORT 0x01
#define HID_GET_IDLE 0x02
#define HID_GET_PROTOCOL 0x03
#define HID_SET_REPORT 0x09
#define HID_SET_IDLE 0x0A
#define HID_SET_PROTOCOL 0x0B

/*
 * Handles the GET_DESCRIPTOR callback
 *
 * Returns the proper descriptor
 */
static const USBDescriptor *usb_get_descriptor_cb(USBDriver *usbp, uint8_t dtype, uint8_t dindex, uint16_t wIndex) {
    (void)usbp;
    static USBDescriptor desc;
    uint16_t             wValue = ((uint16_t)dtype << 8) | dindex;
    desc.ud_string              = NULL;
    desc.ud_size                = get_usb_descriptor(wValue, wIndex, (const void **const) & desc.ud_string);
    if (desc.ud_string == NULL)
        return NULL;
    else
        return &desc;
}

#ifndef KEYBOARD_SHARED_EP
/* keyboard endpoint state structure */
static USBInEndpointState kbd_ep_state;
/* keyboard endpoint initialization structure (IN) - see USBEndpointConfig comment at top of file */
static const USBEndpointConfig kbd_ep_config = {
    USB_EP_MODE_TYPE_INTR, /* Interrupt EP */
    NULL,                  /* SETUP packet notification callback */
    kbd_in_cb,             /* IN notification callback */
    NULL,                  /* OUT notification callback */
    KEYBOARD_EPSIZE,       /* IN maximum packet size */
    0,                     /* OUT maximum packet size */
    &kbd_ep_state,         /* IN Endpoint state */
    NULL,                  /* OUT endpoint state */
    2,                     /* IN multiplier */
    NULL                   /* SETUP buffer (not a SETUP endpoint) */
};
#endif

#if defined(MOUSE_ENABLE) && !defined(MOUSE_SHARED_EP)
/* mouse endpoint state structure */
static USBInEndpointState mouse_ep_state;

/* mouse endpoint initialization structure (IN) - see USBEndpointConfig comment at top of file */
static const USBEndpointConfig mouse_ep_config = {
    USB_EP_MODE_TYPE_INTR, /* Interrupt EP */
    NULL,                  /* SETUP packet notification callback */
    mouse_in_cb,           /* IN notification callback */
    NULL,                  /* OUT notification callback */
    MOUSE_EPSIZE,          /* IN maximum packet size */
    0,                     /* OUT maximum packet size */
    &mouse_ep_state,       /* IN Endpoint state */
    NULL,                  /* OUT endpoint state */
    2,                     /* IN multiplier */
    NULL                   /* SETUP buffer (not a SETUP endpoint) */
};
#endif

#ifdef SHARED_EP_ENABLE
/* shared endpoint state structure */
static USBInEndpointState shared_ep_state;

/* shared endpoint initialization structure (IN) - see USBEndpointConfig comment at top of file */
static const USBEndpointConfig shared_ep_config = {
    USB_EP_MODE_TYPE_INTR, /* Interrupt EP */
    NULL,                  /* SETUP packet notification callback */
    shared_in_cb,          /* IN notification callback */
    NULL,                  /* OUT notification callback */
    SHARED_EPSIZE,         /* IN maximum packet size */
    0,                     /* OUT maximum packet size */
    &shared_ep_state,      /* IN Endpoint state */
    NULL,                  /* OUT endpoint state */
    2,                     /* IN multiplier */
    NULL                   /* SETUP buffer (not a SETUP endpoint) */
};
#endif

#if STM32_USB_USE_OTG1
typedef struct {
    size_t              queue_capacity_in;
    size_t              queue_capacity_out;
    USBInEndpointState  in_ep_state;
    USBOutEndpointState out_ep_state;
    USBInEndpointState  int_ep_state;
    USBEndpointConfig   inout_ep_config;
    USBEndpointConfig   int_ep_config;
    const QMKUSBConfig  config;
    QMKUSBDriver        driver;
} usb_driver_config_t;
#else
typedef struct {
    size_t              queue_capacity_in;
    size_t              queue_capacity_out;
    USBInEndpointState  in_ep_state;
    USBOutEndpointState out_ep_state;
    USBInEndpointState  int_ep_state;
    USBEndpointConfig   in_ep_config;
    USBEndpointConfig   out_ep_config;
    USBEndpointConfig   int_ep_config;
    const QMKUSBConfig  config;
    QMKUSBDriver        driver;
} usb_driver_config_t;
#endif

#if STM32_USB_USE_OTG1
/* Reusable initialization structure - see USBEndpointConfig comment at top of file */
#    define QMK_USB_DRIVER_CONFIG(stream, notification, fixedsize)                                                              \
        {                                                                                                                       \
            .queue_capacity_in = stream##_IN_CAPACITY, .queue_capacity_out = stream##_OUT_CAPACITY,                             \
            .inout_ep_config =                                                                                                  \
                {                                                                                                               \
                    stream##_IN_MODE,      /* Interrupt EP */                                                                   \
                    NULL,                  /* SETUP packet notification callback */                                             \
                    qmkusbDataTransmitted, /* IN notification callback */                                                       \
                    qmkusbDataReceived,    /* OUT notification callback */                                                      \
                    stream##_EPSIZE,       /* IN maximum packet size */                                                         \
                    stream##_EPSIZE,       /* OUT maximum packet size */                                                        \
                    NULL,                  /* IN Endpoint state */                                                              \
                    NULL,                  /* OUT endpoint state */                                                             \
                    2,                     /* IN multiplier */                                                                  \
                    NULL                   /* SETUP buffer (not a SETUP endpoint) */                                            \
                },                                                                                                              \
            .int_ep_config =                                                                                                    \
                {                                                                                                               \
                    USB_EP_MODE_TYPE_INTR,      /* Interrupt EP */                                                              \
                    NULL,                       /* SETUP packet notification callback */                                        \
                    qmkusbInterruptTransmitted, /* IN notification callback */                                                  \
                    NULL,                       /* OUT notification callback */                                                 \
                    CDC_NOTIFICATION_EPSIZE,    /* IN maximum packet size */                                                    \
                    0,                          /* OUT maximum packet size */                                                   \
                    NULL,                       /* IN Endpoint state */                                                         \
                    NULL,                       /* OUT endpoint state */                                                        \
                    2,                          /* IN multiplier */                                                             \
                    NULL,                       /* SETUP buffer (not a SETUP endpoint) */                                       \
                },                                                                                                              \
            .config = {                                                                                                         \
                .usbp        = &USB_DRIVER,                                                                                     \
                .bulk_in     = stream##_IN_EPNUM,                                                                               \
                .bulk_out    = stream##_OUT_EPNUM,                                                                              \
                .int_in      = notification,                                                                                    \
                .in_buffers  = stream##_IN_CAPACITY,                                                                            \
                .out_buffers = stream##_OUT_CAPACITY,                                                                           \
                .in_size     = stream##_EPSIZE,                                                                                 \
                .out_size    = stream##_EPSIZE,                                                                                 \
                .fixed_size  = fixedsize,                                                                                       \
                .ib          = (__attribute__((aligned(4))) uint8_t[BQ_BUFFER_SIZE(stream##_IN_CAPACITY, stream##_EPSIZE)]){},  \
                .ob          = (__attribute__((aligned(4))) uint8_t[BQ_BUFFER_SIZE(stream##_OUT_CAPACITY, stream##_EPSIZE)]){}, \
            }                                                                                                                   \
        }
#else
/* Reusable initialization structure - see USBEndpointConfig comment at top of file */
#    define QMK_USB_DRIVER_CONFIG(stream, notification, fixedsize)                                                              \
        {                                                                                                                       \
            .queue_capacity_in = stream##_IN_CAPACITY, .queue_capacity_out = stream##_OUT_CAPACITY,                             \
            .in_ep_config =                                                                                                     \
                {                                                                                                               \
                    stream##_IN_MODE,      /* Interrupt EP */                                                                   \
                    NULL,                  /* SETUP packet notification callback */                                             \
                    qmkusbDataTransmitted, /* IN notification callback */                                                       \
                    NULL,                  /* OUT notification callback */                                                      \
                    stream##_EPSIZE,       /* IN maximum packet size */                                                         \
                    0,                     /* OUT maximum packet size */                                                        \
                    NULL,                  /* IN Endpoint state */                                                              \
                    NULL,                  /* OUT endpoint state */                                                             \
                    2,                     /* IN multiplier */                                                                  \
                    NULL                   /* SETUP buffer (not a SETUP endpoint) */                                            \
                },                                                                                                              \
            .out_ep_config =                                                                                                    \
                {                                                                                                               \
                    stream##_OUT_MODE,  /* Interrupt EP */                                                                      \
                    NULL,               /* SETUP packet notification callback */                                                \
                    NULL,               /* IN notification callback */                                                          \
                    qmkusbDataReceived, /* OUT notification callback */                                                         \
                    0,                  /* IN maximum packet size */                                                            \
                    stream##_EPSIZE,    /* OUT maximum packet size */                                                           \
                    NULL,               /* IN Endpoint state */                                                                 \
                    NULL,               /* OUT endpoint state */                                                                \
                    2,                  /* IN multiplier */                                                                     \
                    NULL,               /* SETUP buffer (not a SETUP endpoint) */                                               \
                },                                                                                                              \
            .int_ep_config =                                                                                                    \
                {                                                                                                               \
                    USB_EP_MODE_TYPE_INTR,      /* Interrupt EP */                                                              \
                    NULL,                       /* SETUP packet notification callback */                                        \
                    qmkusbInterruptTransmitted, /* IN notification callback */                                                  \
                    NULL,                       /* OUT notification callback */                                                 \
                    CDC_NOTIFICATION_EPSIZE,    /* IN maximum packet size */                                                    \
                    0,                          /* OUT maximum packet size */                                                   \
                    NULL,                       /* IN Endpoint state */                                                         \
                    NULL,                       /* OUT endpoint state */                                                        \
                    2,                          /* IN multiplier */                                                             \
                    NULL,                       /* SETUP buffer (not a SETUP endpoint) */                                       \
                },                                                                                                              \
            .config = {                                                                                                         \
                .usbp        = &USB_DRIVER,                                                                                     \
                .bulk_in     = stream##_IN_EPNUM,                                                                               \
                .bulk_out    = stream##_OUT_EPNUM,                                                                              \
                .int_in      = notification,                                                                                    \
                .in_buffers  = stream##_IN_CAPACITY,                                                                            \
                .out_buffers = stream##_OUT_CAPACITY,                                                                           \
                .in_size     = stream##_EPSIZE,                                                                                 \
                .out_size    = stream##_EPSIZE,                                                                                 \
                .fixed_size  = fixedsize,                                                                                       \
                .ib          = (__attribute__((aligned(4))) uint8_t[BQ_BUFFER_SIZE(stream##_IN_CAPACITY, stream##_EPSIZE)]){},  \
                .ob          = (__attribute__((aligned(4))) uint8_t[BQ_BUFFER_SIZE(stream##_OUT_CAPACITY, stream##_EPSIZE)]){}, \
            }                                                                                                                   \
        }
#endif

typedef struct {
    union {
        struct {
#ifdef CONSOLE_ENABLE
            usb_driver_config_t console_driver;
#endif
#ifdef RAW_ENABLE
            usb_driver_config_t raw_driver;
#endif
#ifdef MIDI_ENABLE
            usb_driver_config_t midi_driver;
#endif
#ifdef VIRTSER_ENABLE
            usb_driver_config_t serial_driver;
#endif
#ifdef JOYSTICK_ENABLE
            usb_driver_config_t joystick_driver;
#endif
#if defined(DIGITIZER_ENABLE) && !defined(DIGITIZER_SHARED_EP)
            usb_driver_config_t digitizer_driver;
#endif
        };
        usb_driver_config_t array[0];
    };
} usb_driver_configs_t;

static usb_driver_configs_t drivers = {
#ifdef CONSOLE_ENABLE
#    define CONSOLE_IN_CAPACITY 4
#    define CONSOLE_OUT_CAPACITY 4
#    define CONSOLE_IN_MODE USB_EP_MODE_TYPE_INTR
#    define CONSOLE_OUT_MODE USB_EP_MODE_TYPE_INTR
    .console_driver = QMK_USB_DRIVER_CONFIG(CONSOLE, 0, true),
#endif
#ifdef RAW_ENABLE
#    define RAW_IN_CAPACITY 4
#    define RAW_OUT_CAPACITY 4
#    define RAW_IN_MODE USB_EP_MODE_TYPE_INTR
#    define RAW_OUT_MODE USB_EP_MODE_TYPE_INTR
    .raw_driver = QMK_USB_DRIVER_CONFIG(RAW, 0, false),
#endif

#ifdef MIDI_ENABLE
#    define MIDI_STREAM_IN_CAPACITY 4
#    define MIDI_STREAM_OUT_CAPACITY 4
#    define MIDI_STREAM_IN_MODE USB_EP_MODE_TYPE_BULK
#    define MIDI_STREAM_OUT_MODE USB_EP_MODE_TYPE_BULK
    .midi_driver = QMK_USB_DRIVER_CONFIG(MIDI_STREAM, 0, false),
#endif

#ifdef VIRTSER_ENABLE
#    define CDC_IN_CAPACITY 4
#    define CDC_OUT_CAPACITY 4
#    define CDC_IN_MODE USB_EP_MODE_TYPE_BULK
#    define CDC_OUT_MODE USB_EP_MODE_TYPE_BULK
    .serial_driver = QMK_USB_DRIVER_CONFIG(CDC, CDC_NOTIFICATION_EPNUM, false),
#endif

#ifdef JOYSTICK_ENABLE
#    define JOYSTICK_IN_CAPACITY 4
#    define JOYSTICK_OUT_CAPACITY 4
#    define JOYSTICK_IN_MODE USB_EP_MODE_TYPE_BULK
#    define JOYSTICK_OUT_MODE USB_EP_MODE_TYPE_BULK
    .joystick_driver = QMK_USB_DRIVER_CONFIG(JOYSTICK, 0, false),
#endif

#if defined(DIGITIZER_ENABLE) && !defined(DIGITIZER_SHARED_EP)
#    define DIGITIZER_IN_CAPACITY 4
#    define DIGITIZER_OUT_CAPACITY 4
#    define DIGITIZER_IN_MODE USB_EP_MODE_TYPE_BULK
#    define DIGITIZER_OUT_MODE USB_EP_MODE_TYPE_BULK
    .digitizer_driver = QMK_USB_DRIVER_CONFIG(DIGITIZER, 0, false),
#endif
};

#define NUM_USB_DRIVERS (sizeof(drivers) / sizeof(usb_driver_config_t))

/* ---------------------------------------------------------
 *                  USB driver functions
 * ---------------------------------------------------------
 */

#define USB_EVENT_QUEUE_SIZE 16
usbevent_t event_queue[USB_EVENT_QUEUE_SIZE];
uint8_t    event_queue_head;
uint8_t    event_queue_tail;

void usb_event_queue_init(void) {
    // Initialise the event queue
    memset(&event_queue, 0, sizeof(event_queue));
    event_queue_head = 0;
    event_queue_tail = 0;
}

static inline bool usb_event_queue_enqueue(usbevent_t event) {
    uint8_t next = (event_queue_head + 1) % USB_EVENT_QUEUE_SIZE;
    if (next == event_queue_tail) {
        return false;
    }
    event_queue[event_queue_head] = event;
    event_queue_head              = next;
    return true;
}

static inline bool usb_event_queue_dequeue(usbevent_t *event) {
    if (event_queue_head == event_queue_tail) {
        return false;
    }
    *event           = event_queue[event_queue_tail];
    event_queue_tail = (event_queue_tail + 1) % USB_EVENT_QUEUE_SIZE;
    return true;
}

static inline void usb_event_suspend_handler(void) {
    usb_device_state_set_suspend(USB_DRIVER.configuration != 0, USB_DRIVER.configuration);
#ifdef SLEEP_LED_ENABLE
    sleep_led_enable();
#endif /* SLEEP_LED_ENABLE */
}

static inline void usb_event_wakeup_handler(void) {
    suspend_wakeup_init();
    usb_device_state_set_resume(USB_DRIVER.configuration != 0, USB_DRIVER.configuration);
#ifdef SLEEP_LED_ENABLE
    sleep_led_disable();
    // NOTE: converters may not accept this
    led_set(host_keyboard_leds());
#endif /* SLEEP_LED_ENABLE */
}

bool last_suspend_state = false;

void usb_event_queue_task(void) {
    usbevent_t event;
    while (usb_event_queue_dequeue(&event)) {
        switch (event) {
            case USB_EVENT_SUSPEND:
                last_suspend_state = true;
                usb_event_suspend_handler();
                break;
            case USB_EVENT_WAKEUP:
                last_suspend_state = false;
                usb_event_wakeup_handler();
                break;
            case USB_EVENT_CONFIGURED:
                usb_device_state_set_configuration(USB_DRIVER.configuration != 0, USB_DRIVER.configuration);
                break;
            case USB_EVENT_UNCONFIGURED:
                usb_device_state_set_configuration(false, 0);
                break;
            case USB_EVENT_RESET:
                usb_device_state_set_reset();
                break;
            default:
                // Nothing to do, we don't handle it.
                break;
        }
    }
}

/* Handles the USB driver global events
 * TODO: maybe disable some things when connection is lost? */
static void usb_event_cb(USBDriver *usbp, usbevent_t event) {
    switch (event) {
        case USB_EVENT_ADDRESS:
            return;

        case USB_EVENT_CONFIGURED:
            osalSysLockFromISR();
            /* Enable the endpoints specified into the configuration. */
#ifndef KEYBOARD_SHARED_EP
            usbInitEndpointI(usbp, KEYBOARD_IN_EPNUM, &kbd_ep_config);
#endif
#if defined(MOUSE_ENABLE) && !defined(MOUSE_SHARED_EP)
            usbInitEndpointI(usbp, MOUSE_IN_EPNUM, &mouse_ep_config);
#endif
#ifdef SHARED_EP_ENABLE
            usbInitEndpointI(usbp, SHARED_IN_EPNUM, &shared_ep_config);
#endif
            for (int i = 0; i < NUM_USB_DRIVERS; i++) {
#if STM32_USB_USE_OTG1
                usbInitEndpointI(usbp, drivers.array[i].config.bulk_in, &drivers.array[i].inout_ep_config);
#else
                usbInitEndpointI(usbp, drivers.array[i].config.bulk_in, &drivers.array[i].in_ep_config);
                usbInitEndpointI(usbp, drivers.array[i].config.bulk_out, &drivers.array[i].out_ep_config);
#endif
                if (drivers.array[i].config.int_in) {
                    usbInitEndpointI(usbp, drivers.array[i].config.int_in, &drivers.array[i].int_ep_config);
                }
                qmkusbConfigureHookI(&drivers.array[i].driver);
            }
            osalSysUnlockFromISR();
            if (last_suspend_state) {
                usb_event_queue_enqueue(USB_EVENT_WAKEUP);
            }
            usb_event_queue_enqueue(USB_EVENT_CONFIGURED);
            return;
        case USB_EVENT_SUSPEND:
            /* Falls into.*/
        case USB_EVENT_UNCONFIGURED:
            /* Falls into.*/
        case USB_EVENT_RESET:
            usb_event_queue_enqueue(event);
            for (int i = 0; i < NUM_USB_DRIVERS; i++) {
                chSysLockFromISR();
                /* Disconnection event on suspend.*/
                qmkusbSuspendHookI(&drivers.array[i].driver);
                chSysUnlockFromISR();
            }
            return;

        case USB_EVENT_WAKEUP:
            // TODO: from ISR! print("[W]");
            for (int i = 0; i < NUM_USB_DRIVERS; i++) {
                chSysLockFromISR();
                /* Disconnection event on suspend.*/
                qmkusbWakeupHookI(&drivers.array[i].driver);
                chSysUnlockFromISR();
            }
            usb_event_queue_enqueue(USB_EVENT_WAKEUP);
            return;

        case USB_EVENT_STALLED:
            return;
    }
}

/* Function used locally in os/hal/src/usb.c for getting descriptors
 * need it here for HID descriptor */
static uint16_t get_hword(uint8_t *p) {
    uint16_t hw;

    hw = (uint16_t)*p++;
    hw |= (uint16_t)*p << 8U;
    return hw;
}

/*
 * Appendix G: HID Request Support Requirements
 *
 * The following table enumerates the requests that need to be supported by various types of HID class devices.
 * Device type     GetReport   SetReport   GetIdle     SetIdle     GetProtocol SetProtocol
 * ------------------------------------------------------------------------------------------
 * Boot Mouse      Required    Optional    Optional    Optional    Required    Required
 * Non-Boot Mouse  Required    Optional    Optional    Optional    Optional    Optional
 * Boot Keyboard   Required    Optional    Required    Required    Required    Required
 * Non-Boot Keybrd Required    Optional    Required    Required    Optional    Optional
 * Other Device    Required    Optional    Optional    Optional    Optional    Optional
 */

static uint8_t set_report_buf[2] __attribute__((aligned(4)));
static void    set_led_transfer_cb(USBDriver *usbp) {
    if (usbp->setup[6] == 2) { /* LSB(wLength) */
        uint8_t report_id = set_report_buf[0];
        if ((report_id == REPORT_ID_KEYBOARD) || (report_id == REPORT_ID_NKRO)) {
            keyboard_led_state = set_report_buf[1];
        }
    } else {
        keyboard_led_state = set_report_buf[0];
    }
}

/* Callback for SETUP request on the endpoint 0 (control) */
static bool usb_request_hook_cb(USBDriver *usbp) {
    const USBDescriptor *dp;

    /* usbp->setup fields:
     *  0:   bmRequestType (bitmask)
     *  1:   bRequest
     *  2,3: (LSB,MSB) wValue
     *  4,5: (LSB,MSB) wIndex
     *  6,7: (LSB,MSB) wLength (number of bytes to transfer if there is a data phase) */

    /* Handle HID class specific requests */
    if (((usbp->setup[0] & USB_RTYPE_TYPE_MASK) == USB_RTYPE_TYPE_CLASS) && ((usbp->setup[0] & USB_RTYPE_RECIPIENT_MASK) == USB_RTYPE_RECIPIENT_INTERFACE)) {
        switch (usbp->setup[0] & USB_RTYPE_DIR_MASK) {
            case USB_RTYPE_DIR_DEV2HOST:
                switch (usbp->setup[1]) { /* bRequest */
                    case HID_GET_REPORT:
                        switch (usbp->setup[4]) { /* LSB(wIndex) (check MSB==0?) */
                            case KEYBOARD_INTERFACE:
                                usbSetupTransfer(usbp, (uint8_t *)&keyboard_report_sent, sizeof(keyboard_report_sent), NULL);
                                return TRUE;
                                break;

#if defined(MOUSE_ENABLE) && !defined(MOUSE_SHARED_EP)
                            case MOUSE_INTERFACE:
                                usbSetupTransfer(usbp, (uint8_t *)&mouse_report_blank, sizeof(mouse_report_blank), NULL);
                                return TRUE;
                                break;
#endif

                            default:
                                usbSetupTransfer(usbp, NULL, 0, NULL);
                                return TRUE;
                                break;
                        }
                        break;

                    case HID_GET_PROTOCOL:
                        if ((usbp->setup[4] == KEYBOARD_INTERFACE) && (usbp->setup[5] == 0)) { /* wIndex */
                            usbSetupTransfer(usbp, &keyboard_protocol, 1, NULL);
                            return TRUE;
                        }
                        break;

                    case HID_GET_IDLE:
                        usbSetupTransfer(usbp, &keyboard_idle, 1, NULL);
                        return TRUE;
                        break;
                }
                break;

            case USB_RTYPE_DIR_HOST2DEV:
                switch (usbp->setup[1]) { /* bRequest */
                    case HID_SET_REPORT:
                        switch (usbp->setup[4]) { /* LSB(wIndex) (check MSB==0?) */
                            case KEYBOARD_INTERFACE:
#if defined(SHARED_EP_ENABLE) && !defined(KEYBOARD_SHARED_EP)
                            case SHARED_INTERFACE:
#endif
                                usbSetupTransfer(usbp, set_report_buf, sizeof(set_report_buf), set_led_transfer_cb);
                                return TRUE;
                                break;
                        }
                        break;

                    case HID_SET_PROTOCOL:
                        if ((usbp->setup[4] == KEYBOARD_INTERFACE) && (usbp->setup[5] == 0)) { /* wIndex */
                            keyboard_protocol = ((usbp->setup[2]) != 0x00);                    /* LSB(wValue) */
#ifdef NKRO_ENABLE
                            keymap_config.nkro = !!keyboard_protocol;
                            if (!keymap_config.nkro && keyboard_idle) {
#else  /* NKRO_ENABLE */
                            if (keyboard_idle) {
#endif /* NKRO_ENABLE */
                                /* arm the idle timer if boot protocol & idle */
                                osalSysLockFromISR();
                                chVTSetI(&keyboard_idle_timer, 4 * TIME_MS2I(keyboard_idle), keyboard_idle_timer_cb, (void *)usbp);
                                osalSysUnlockFromISR();
                            }
                        }
                        usbSetupTransfer(usbp, NULL, 0, NULL);
                        return TRUE;
                        break;

                    case HID_SET_IDLE:
                        keyboard_idle = usbp->setup[3]; /* MSB(wValue) */
                                                        /* arm the timer */
#ifdef NKRO_ENABLE
                        if (!keymap_config.nkro && keyboard_idle) {
#else  /* NKRO_ENABLE */
                        if (keyboard_idle) {
#endif /* NKRO_ENABLE */
                            osalSysLockFromISR();
                            chVTSetI(&keyboard_idle_timer, 4 * TIME_MS2I(keyboard_idle), keyboard_idle_timer_cb, (void *)usbp);
                            osalSysUnlockFromISR();
                        }
                        usbSetupTransfer(usbp, NULL, 0, NULL);
                        return TRUE;
                        break;
                }
                break;
        }
    }

    /* Handle the Get_Descriptor Request for HID class (not handled by the default hook) */
    if ((usbp->setup[0] == 0x81) && (usbp->setup[1] == USB_REQ_GET_DESCRIPTOR)) {
        dp = usbp->config->get_descriptor_cb(usbp, usbp->setup[3], usbp->setup[2], get_hword(&usbp->setup[4]));
        if (dp == NULL) return FALSE;
        usbSetupTransfer(usbp, (uint8_t *)dp->ud_string, dp->ud_size, NULL);
        return TRUE;
    }

    for (int i = 0; i < NUM_USB_DRIVERS; i++) {
        if (drivers.array[i].config.int_in) {
            // NOTE: Assumes that we only have one serial driver
            return qmkusbRequestsHook(usbp);
        }
    }

    return FALSE;
}

/* Start-of-frame callback */
static void usb_sof_cb(USBDriver *usbp) {
    kbd_sof_cb(usbp);
    osalSysLockFromISR();
    for (int i = 0; i < NUM_USB_DRIVERS; i++) {
        qmkusbSOFHookI(&drivers.array[i].driver);
    }
    osalSysUnlockFromISR();
}

/* USB driver configuration */
static const USBConfig usbcfg = {
    usb_event_cb,          /* USB events callback */
    usb_get_descriptor_cb, /* Device GET_DESCRIPTOR request callback */
    usb_request_hook_cb,   /* Requests hook callback */
    usb_sof_cb             /* Start Of Frame callback */
};

/*
 * Initialize the USB driver
 */
void init_usb_driver(USBDriver *usbp) {
    for (int i = 0; i < NUM_USB_DRIVERS; i++) {
#if STM32_USB_USE_OTG1
        QMKUSBDriver *driver                       = &drivers.array[i].driver;
        drivers.array[i].inout_ep_config.in_state  = &drivers.array[i].in_ep_state;
        drivers.array[i].inout_ep_config.out_state = &drivers.array[i].out_ep_state;
        drivers.array[i].int_ep_config.in_state    = &drivers.array[i].int_ep_state;
        qmkusbObjectInit(driver, &drivers.array[i].config);
        qmkusbStart(driver, &drivers.array[i].config);
#else
        QMKUSBDriver *driver                     = &drivers.array[i].driver;
        drivers.array[i].in_ep_config.in_state   = &drivers.array[i].in_ep_state;
        drivers.array[i].out_ep_config.out_state = &drivers.array[i].out_ep_state;
        drivers.array[i].int_ep_config.in_state  = &drivers.array[i].int_ep_state;
        qmkusbObjectInit(driver, &drivers.array[i].config);
        qmkusbStart(driver, &drivers.array[i].config);
#endif
    }

    /*
     * Activates the USB driver and then the USB bus pull-up on D+.
     * Note, a delay is inserted in order to not have to disconnect the cable
     * after a reset.
     */
    usbDisconnectBus(usbp);
    wait_ms(1500);
    usbStart(usbp, &usbcfg);
    usbConnectBus(usbp);

    chVTObjectInit(&keyboard_idle_timer);
}

__attribute__((weak)) void restart_usb_driver(USBDriver *usbp) {
    usbStop(usbp);
    usbDisconnectBus(usbp);

#if USB_SUSPEND_WAKEUP_DELAY > 0
    // Some hubs, kvm switches, and monitors do
    // weird things, with USB device state bouncing
    // around wildly on wakeup, yielding race
    // conditions that can corrupt the keyboard state.
    //
    // Pause for a while to let things settle...
    wait_ms(USB_SUSPEND_WAKEUP_DELAY);
#endif

    usbStart(usbp, &usbcfg);
    usbConnectBus(usbp);
}

/* ---------------------------------------------------------
 *                  Keyboard functions
 * ---------------------------------------------------------
 */
/* keyboard IN callback hander (a kbd report has made it IN) */
#ifndef KEYBOARD_SHARED_EP
void kbd_in_cb(USBDriver *usbp, usbep_t ep) {
    /* STUB */
    (void)usbp;
    (void)ep;
}
#endif

/* start-of-frame handler
 * TODO: i guess it would be better to re-implement using timers,
 *  so that this is not going to have to be checked every 1ms */
void kbd_sof_cb(USBDriver *usbp) { (void)usbp; }

/* Idle requests timer code
 * callback (called from ISR, unlocked state) */
static void keyboard_idle_timer_cb(void *arg) {
    USBDriver *usbp = (USBDriver *)arg;

    osalSysLockFromISR();

    /* check that the states of things are as they're supposed to */
    if (usbGetDriverStateI(usbp) != USB_ACTIVE) {
        /* do not rearm the timer, should be enabled on IDLE request */
        osalSysUnlockFromISR();
        return;
    }

#ifdef NKRO_ENABLE
    if (!keymap_config.nkro && keyboard_idle && keyboard_protocol) {
#else  /* NKRO_ENABLE */
    if (keyboard_idle && keyboard_protocol) {
#endif /* NKRO_ENABLE */
        /* TODO: are we sure we want the KBD_ENDPOINT? */
        if (!usbGetTransmitStatusI(usbp, KEYBOARD_IN_EPNUM)) {
            usbStartTransmitI(usbp, KEYBOARD_IN_EPNUM, (uint8_t *)&keyboard_report_sent, KEYBOARD_EPSIZE);
        }
        /* rearm the timer */
        chVTSetI(&keyboard_idle_timer, 4 * TIME_MS2I(keyboard_idle), keyboard_idle_timer_cb, (void *)usbp);
    }

    /* do not rearm the timer if the condition above fails
     * it should be enabled again on either IDLE or SET_PROTOCOL requests */
    osalSysUnlockFromISR();
}

/* LED status */
uint8_t keyboard_leds(void) { return keyboard_led_state; }

/* prepare and start sending a report IN
 * not callable from ISR or locked state */
void send_keyboard(report_keyboard_t *report) {
    osalSysLock();
    if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
        goto unlock;
    }

#ifdef NKRO_ENABLE
    if (keymap_config.nkro && keyboard_protocol) { /* NKRO protocol */
        /* need to wait until the previous packet has made it through */
        /* can rewrite this using the synchronous API, then would wait
         * until *after* the packet has been transmitted. I think
         * this is more efficient */
        /* busy wait, should be short and not very common */
        if (usbGetTransmitStatusI(&USB_DRIVER, SHARED_IN_EPNUM)) {
            /* Need to either suspend, or loop and call unlock/lock during
             * every iteration - otherwise the system will remain locked,
             * no interrupts served, so USB not going through as well.
             * Note: for suspend, need USB_USE_WAIT == TRUE in halconf.h */
            osalThreadSuspendS(&(&USB_DRIVER)->epc[SHARED_IN_EPNUM]->in_state->thread);

            /* after osalThreadSuspendS returns USB status might have changed */
            if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
                goto unlock;
            }
        }
        usbStartTransmitI(&USB_DRIVER, SHARED_IN_EPNUM, (uint8_t *)report, sizeof(struct nkro_report));
    } else
#endif /* NKRO_ENABLE */
    {  /* regular protocol */
        /* need to wait until the previous packet has made it through */
        /* busy wait, should be short and not very common */
        if (usbGetTransmitStatusI(&USB_DRIVER, KEYBOARD_IN_EPNUM)) {
            /* Need to either suspend, or loop and call unlock/lock during
             * every iteration - otherwise the system will remain locked,
             * no interrupts served, so USB not going through as well.
             * Note: for suspend, need USB_USE_WAIT == TRUE in halconf.h */
            osalThreadSuspendS(&(&USB_DRIVER)->epc[KEYBOARD_IN_EPNUM]->in_state->thread);

            /* after osalThreadSuspendS returns USB status might have changed */
            if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
                goto unlock;
            }
        }
        uint8_t *data, size;
        if (keyboard_protocol) {
            data = (uint8_t *)report;
            size = KEYBOARD_REPORT_SIZE;
        } else { /* boot protocol */
            data = &report->mods;
            size = 8;
        }
        usbStartTransmitI(&USB_DRIVER, KEYBOARD_IN_EPNUM, data, size);
    }
    keyboard_report_sent = *report;

unlock:
    osalSysUnlock();
}

/* ---------------------------------------------------------
 *                     Mouse functions
 * ---------------------------------------------------------
 */

#ifdef MOUSE_ENABLE

#    ifndef MOUSE_SHARED_EP
/* mouse IN callback hander (a mouse report has made it IN) */
void mouse_in_cb(USBDriver *usbp, usbep_t ep) {
    (void)usbp;
    (void)ep;
}
#    endif

void send_mouse(report_mouse_t *report) {
    osalSysLock();
    if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
        osalSysUnlock();
        return;
    }

    if (usbGetTransmitStatusI(&USB_DRIVER, MOUSE_IN_EPNUM)) {
        /* Need to either suspend, or loop and call unlock/lock during
         * every iteration - otherwise the system will remain locked,
         * no interrupts served, so USB not going through as well.
         * Note: for suspend, need USB_USE_WAIT == TRUE in halconf.h */
        if (osalThreadSuspendTimeoutS(&(&USB_DRIVER)->epc[MOUSE_IN_EPNUM]->in_state->thread, TIME_MS2I(10)) == MSG_TIMEOUT) {
            osalSysUnlock();
            return;
        }
    }
    usbStartTransmitI(&USB_DRIVER, MOUSE_IN_EPNUM, (uint8_t *)report, sizeof(report_mouse_t));
    osalSysUnlock();
}

#else  /* MOUSE_ENABLE */
void send_mouse(report_mouse_t *report) { (void)report; }
#endif /* MOUSE_ENABLE */

/* ---------------------------------------------------------
 *                   Shared EP functions
 * ---------------------------------------------------------
 */
#ifdef SHARED_EP_ENABLE
/* shared IN callback hander */
void shared_in_cb(USBDriver *usbp, usbep_t ep) {
    /* STUB */
    (void)usbp;
    (void)ep;
}
#endif

/* ---------------------------------------------------------
 *                   Extrakey functions
 * ---------------------------------------------------------
 */

#ifdef EXTRAKEY_ENABLE
static void send_extra(uint8_t report_id, uint16_t data) {
    osalSysLock();
    if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
        osalSysUnlock();
        return;
    }

    static report_extra_t report;
    report = (report_extra_t){.report_id = report_id, .usage = data};

    usbStartTransmitI(&USB_DRIVER, SHARED_IN_EPNUM, (uint8_t *)&report, sizeof(report_extra_t));
    osalSysUnlock();
}
#endif

void send_system(uint16_t data) {
#ifdef EXTRAKEY_ENABLE
    send_extra(REPORT_ID_SYSTEM, data);
#endif
}

void send_consumer(uint16_t data) {
#ifdef EXTRAKEY_ENABLE
    send_extra(REPORT_ID_CONSUMER, data);
#endif
}

void send_digitizer(report_digitizer_t *report) {
#ifdef DIGITIZER_ENABLE
#    ifdef DIGITIZER_SHARED_EP
    osalSysLock();
    if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
        osalSysUnlock();
        return;
    }

    usbStartTransmitI(&USB_DRIVER, DIGITIZER_IN_EPNUM, (uint8_t *)report, sizeof(report_digitizer_t));
    osalSysUnlock();
#    else
    chnWrite(&drivers.digitizer_driver.driver, (uint8_t *)report, sizeof(report_digitizer_t));
#    endif
#endif
}

/* ---------------------------------------------------------
 *                   Console functions
 * ---------------------------------------------------------
 */

#ifdef CONSOLE_ENABLE

int8_t sendchar(uint8_t c) {
    static bool timed_out = false;
    /* The `timed_out` state is an approximation of the ideal `is_listener_disconnected?` state.
     *
     * When a 5ms timeout write has timed out, hid_listen is most likely not running, or not
     * listening to this keyboard, so we go into the timed_out state. In this state we assume
     * that hid_listen is most likely not gonna be connected to us any time soon, so it would
     * be wasteful to write follow-up characters with a 5ms timeout, it would all add up and
     * unncecessarily slow down the firmware. However instead of just dropping the characters,
     * we write them with a TIME_IMMEDIATE timeout, which is a zero timeout,
     * and this will succeed only if hid_listen gets connected again. When a write with
     * TIME_IMMEDIATE timeout succeeds, we know that hid_listen is listening to us again, and
     * we can go back to the timed_out = false state, and following writes will be executed
     * with a 5ms timeout. The reason we don't just send all characters with the TIME_IMMEDIATE
     * timeout is that this could cause bytes to be lost even if hid_listen is running, if there
     * is a lot of data being sent over the console.
     *
     * This logic will work correctly as long as hid_listen is able to receive at least 200
     * bytes per second. On a heavily overloaded machine that's so overloaded that it's
     * unusable, and constantly swapping, hid_listen might have trouble receiving 200 bytes per
     * second, so some bytes might be lost on the console.
     */

    const sysinterval_t timeout = timed_out ? TIME_IMMEDIATE : TIME_MS2I(5);
    const size_t        result  = chnWriteTimeout(&drivers.console_driver.driver, &c, 1, timeout);
    timed_out                   = (result == 0);
    return result;
}

// Just a dummy function for now, this could be exposed as a weak function
// Or connected to the actual QMK console
static void console_receive(uint8_t *data, uint8_t length) {
    (void)data;
    (void)length;
}

void console_task(void) {
    uint8_t buffer[CONSOLE_EPSIZE];
    size_t  size = 0;
    do {
        size_t size = chnReadTimeout(&drivers.console_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
        if (size > 0) {
            console_receive(buffer, size);
        }
    } while (size > 0);
}

#endif /* CONSOLE_ENABLE */

#ifdef RAW_ENABLE
void raw_hid_send(uint8_t *data, uint8_t length) {
    // TODO: implement variable size packet
    if (length != RAW_EPSIZE) {
        return;
    }
    chnWrite(&drivers.raw_driver.driver, data, length);
}

__attribute__((weak)) void raw_hid_receive(uint8_t *data, uint8_t length) {
    // Users should #include "raw_hid.h" in their own code
    // and implement this function there. Leave this as weak linkage
    // so users can opt to not handle data coming in.
}

void raw_hid_task(void) {
    uint8_t buffer[RAW_EPSIZE];
    size_t  size = 0;
    do {
        size_t size = chnReadTimeout(&drivers.raw_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
        if (size > 0) {
            raw_hid_receive(buffer, size);
        }
    } while (size > 0);
}

#endif

#ifdef MIDI_ENABLE

void send_midi_packet(MIDI_EventPacket_t *event) { chnWrite(&drivers.midi_driver.driver, (uint8_t *)event, sizeof(MIDI_EventPacket_t)); }

bool recv_midi_packet(MIDI_EventPacket_t *const event) {
    size_t size = chnReadTimeout(&drivers.midi_driver.driver, (uint8_t *)event, sizeof(MIDI_EventPacket_t), TIME_IMMEDIATE);
    return size == sizeof(MIDI_EventPacket_t);
}
void midi_ep_task(void) {
    uint8_t buffer[MIDI_STREAM_EPSIZE];
    size_t  size = 0;
    do {
        size_t size = chnReadTimeout(&drivers.midi_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
        if (size > 0) {
            MIDI_EventPacket_t event;
            recv_midi_packet(&event);
        }
    } while (size > 0);
}
#endif

#ifdef VIRTSER_ENABLE

void virtser_send(const uint8_t byte) { chnWrite(&drivers.serial_driver.driver, &byte, 1); }

__attribute__((weak)) void virtser_recv(uint8_t c) {
    // Ignore by default
}

void virtser_task(void) {
    uint8_t numBytesReceived = 0;
    uint8_t buffer[16];
    do {
        numBytesReceived = chnReadTimeout(&drivers.serial_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
        for (int i = 0; i < numBytesReceived; i++) {
            virtser_recv(buffer[i]);
        }
    } while (numBytesReceived > 0);
}

#endif

#ifdef JOYSTICK_ENABLE

void send_joystick_packet(joystick_t *joystick) {
    static joystick_report_t rep;
    rep = (joystick_report_t) {
#    if JOYSTICK_AXES_COUNT > 0
        .axes =
        { joystick->axes[0],

#        if JOYSTICK_AXES_COUNT >= 2
          joystick->axes[1],
#        endif
#        if JOYSTICK_AXES_COUNT >= 3
          joystick->axes[2],
#        endif
#        if JOYSTICK_AXES_COUNT >= 4
          joystick->axes[3],
#        endif
#        if JOYSTICK_AXES_COUNT >= 5
          joystick->axes[4],
#        endif
#        if JOYSTICK_AXES_COUNT >= 6
          joystick->axes[5],
#        endif
        },
#    endif  // JOYSTICK_AXES_COUNT>0

#    if JOYSTICK_BUTTON_COUNT > 0
        .buttons = {
            joystick->buttons[0],

#        if JOYSTICK_BUTTON_COUNT > 8
            joystick->buttons[1],
#        endif
#        if JOYSTICK_BUTTON_COUNT > 16
            joystick->buttons[2],
#        endif
#        if JOYSTICK_BUTTON_COUNT > 24
            joystick->buttons[3],
#        endif
        }
#    endif  // JOYSTICK_BUTTON_COUNT>0
    };

    // chnWrite(&drivers.joystick_driver.driver, (uint8_t *)&rep, sizeof(rep));
    osalSysLock();
    if (usbGetDriverStateI(&USB_DRIVER) != USB_ACTIVE) {
        osalSysUnlock();
        return;
    }

    usbStartTransmitI(&USB_DRIVER, JOYSTICK_IN_EPNUM, (uint8_t *)&rep, sizeof(joystick_report_t));
    osalSysUnlock();
}

#endif