summaryrefslogtreecommitdiffstats
path: root/lib/usbhost/USB_Host_Shield_2.0/BTD.h
blob: 6549c30c98438c556c3974c72f7e546728e3e6cb (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
/* Copyright (C) 2012 Kristian Lauszus, TKJ Electronics. All rights reserved.

 This software may be distributed and modified under the terms of the GNU
 General Public License version 2 (GPL2) as published by the Free Software
 Foundation and appearing in the file GPL2.TXT included in the packaging of
 this file. Please note that GPL2 Section 2[b] requires that all works based
 on this software must also be made publicly available under the terms of
 the GPL2 ("Copyleft").

 Contact information
 -------------------

 Kristian Lauszus, TKJ Electronics
 Web      :  http://www.tkjelectronics.com
 e-mail   :  kristianl@tkjelectronics.com
 */

#ifndef _btd_h_
#define _btd_h_

#include "Usb.h"
#include "hid.h"

//PID and VID of the Sony PS3 devices
#define PS3_VID                 0x054C  // Sony Corporation
#define PS3_PID                 0x0268  // PS3 Controller DualShock 3
#define PS3NAVIGATION_PID       0x042F  // Navigation controller
#define PS3MOVE_PID             0x03D5  // Motion controller

#define IOGEAR_GBU521_VID       0x0A5C // The IOGEAR GBU521 dongle does not presents itself correctly, so we have to check for it manually
#define IOGEAR_GBU521_PID       0x21E8

/* Bluetooth dongle data taken from descriptors */
#define BULK_MAXPKTSIZE         64 // Max size for ACL data

// Used in control endpoint header for HCI Commands
#define bmREQ_HCI_OUT USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_DEVICE

/* Bluetooth HCI states for hci_task() */
#define HCI_INIT_STATE                  0
#define HCI_RESET_STATE                 1
#define HCI_CLASS_STATE                 2
#define HCI_BDADDR_STATE                3
#define HCI_LOCAL_VERSION_STATE         4
#define HCI_SET_NAME_STATE              5
#define HCI_CHECK_DEVICE_SERVICE        6

#define HCI_INQUIRY_STATE               7 // These three states are only used if it should pair and connect to a device
#define HCI_CONNECT_DEVICE_STATE        8
#define HCI_CONNECTED_DEVICE_STATE      9

#define HCI_SCANNING_STATE              10
#define HCI_CONNECT_IN_STATE            11
#define HCI_REMOTE_NAME_STATE           12
#define HCI_CONNECTED_STATE             13
#define HCI_DISABLE_SCAN_STATE          14
#define HCI_DONE_STATE                  15
#define HCI_DISCONNECT_STATE            16

/* HCI event flags*/
#define HCI_FLAG_CMD_COMPLETE           (1UL << 0)
#define HCI_FLAG_CONNECT_COMPLETE       (1UL << 1)
#define HCI_FLAG_DISCONNECT_COMPLETE    (1UL << 2)
#define HCI_FLAG_REMOTE_NAME_COMPLETE   (1UL << 3)
#define HCI_FLAG_INCOMING_REQUEST       (1UL << 4)
#define HCI_FLAG_READ_BDADDR            (1UL << 5)
#define HCI_FLAG_READ_VERSION           (1UL << 6)
#define HCI_FLAG_DEVICE_FOUND           (1UL << 7)
#define HCI_FLAG_CONNECT_EVENT          (1UL << 8)

/* Macros for HCI event flag tests */
#define hci_check_flag(flag) (hci_event_flag & (flag))
#define hci_set_flag(flag) (hci_event_flag |= (flag))
#define hci_clear_flag(flag) (hci_event_flag &= ~(flag))

/* HCI Events managed */
#define EV_INQUIRY_COMPLETE                             0x01
#define EV_INQUIRY_RESULT                               0x02
#define EV_CONNECT_COMPLETE                             0x03
#define EV_INCOMING_CONNECT                             0x04
#define EV_DISCONNECT_COMPLETE                          0x05
#define EV_AUTHENTICATION_COMPLETE                      0x06
#define EV_REMOTE_NAME_COMPLETE                         0x07
#define EV_ENCRYPTION_CHANGE                            0x08
#define EV_CHANGE_CONNECTION_LINK                       0x09
#define EV_ROLE_CHANGED                                 0x12
#define EV_NUM_COMPLETE_PKT                             0x13
#define EV_PIN_CODE_REQUEST                             0x16
#define EV_LINK_KEY_REQUEST                             0x17
#define EV_LINK_KEY_NOTIFICATION                        0x18
#define EV_DATA_BUFFER_OVERFLOW                         0x1A
#define EV_MAX_SLOTS_CHANGE                             0x1B
#define EV_READ_REMOTE_VERSION_INFORMATION_COMPLETE     0x0C
#define EV_QOS_SETUP_COMPLETE                           0x0D
#define EV_COMMAND_COMPLETE                             0x0E
#define EV_COMMAND_STATUS                               0x0F
#define EV_LOOPBACK_COMMAND                             0x19
#define EV_PAGE_SCAN_REP_MODE                           0x20

/* Bluetooth states for the different Bluetooth drivers */
#define L2CAP_WAIT                      0
#define L2CAP_DONE                      1

/* Used for HID Control channel */
#define L2CAP_CONTROL_CONNECT_REQUEST   2
#define L2CAP_CONTROL_CONFIG_REQUEST    3
#define L2CAP_CONTROL_SUCCESS           4
#define L2CAP_CONTROL_DISCONNECT        5

/* Used for HID Interrupt channel */
#define L2CAP_INTERRUPT_SETUP           6
#define L2CAP_INTERRUPT_CONNECT_REQUEST 7
#define L2CAP_INTERRUPT_CONFIG_REQUEST  8
#define L2CAP_INTERRUPT_DISCONNECT      9

/* Used for SDP channel */
#define L2CAP_SDP_WAIT                  10
#define L2CAP_SDP_SUCCESS               11

/* Used for RFCOMM channel */
#define L2CAP_RFCOMM_WAIT               12
#define L2CAP_RFCOMM_SUCCESS            13

#define L2CAP_DISCONNECT_RESPONSE       14 // Used for both SDP and RFCOMM channel

/* Bluetooth states used by some drivers */
#define TURN_ON_LED                     17
#define PS3_ENABLE_SIXAXIS              18
#define WII_CHECK_MOTION_PLUS_STATE     19
#define WII_CHECK_EXTENSION_STATE       20
#define WII_INIT_MOTION_PLUS_STATE      21

/* L2CAP event flags for HID Control channel */
#define L2CAP_FLAG_CONNECTION_CONTROL_REQUEST           (1UL << 0)
#define L2CAP_FLAG_CONFIG_CONTROL_SUCCESS               (1UL << 1)
#define L2CAP_FLAG_CONTROL_CONNECTED                    (1UL << 2)
#define L2CAP_FLAG_DISCONNECT_CONTROL_RESPONSE          (1UL << 3)

/* L2CAP event flags for HID Interrupt channel */
#define L2CAP_FLAG_CONNECTION_INTERRUPT_REQUEST         (1UL << 4)
#define L2CAP_FLAG_CONFIG_INTERRUPT_SUCCESS             (1UL << 5)
#define L2CAP_FLAG_INTERRUPT_CONNECTED                  (1UL << 6)
#define L2CAP_FLAG_DISCONNECT_INTERRUPT_RESPONSE        (1UL << 7)

/* L2CAP event flags for SDP channel */
#define L2CAP_FLAG_CONNECTION_SDP_REQUEST               (1UL << 8)
#define L2CAP_FLAG_CONFIG_SDP_SUCCESS                   (1UL << 9)
#define L2CAP_FLAG_DISCONNECT_SDP_REQUEST               (1UL << 10)

/* L2CAP event flags for RFCOMM channel */
#define L2CAP_FLAG_CONNECTION_RFCOMM_REQUEST            (1UL << 11)
#define L2CAP_FLAG_CONFIG_RFCOMM_SUCCESS                (1UL << 12)
#define L2CAP_FLAG_DISCONNECT_RFCOMM_REQUEST            (1UL << 13)

#define L2CAP_FLAG_DISCONNECT_RESPONSE                  (1UL << 14)

/* Macros for L2CAP event flag tests */
#define l2cap_check_flag(flag) (l2cap_event_flag & (flag))
#define l2cap_set_flag(flag) (l2cap_event_flag |= (flag))
#define l2cap_clear_flag(flag) (l2cap_event_flag &= ~(flag))

/* L2CAP signaling commands */
#define L2CAP_CMD_COMMAND_REJECT        0x01
#define L2CAP_CMD_CONNECTION_REQUEST    0x02
#define L2CAP_CMD_CONNECTION_RESPONSE   0x03
#define L2CAP_CMD_CONFIG_REQUEST        0x04
#define L2CAP_CMD_CONFIG_RESPONSE       0x05
#define L2CAP_CMD_DISCONNECT_REQUEST    0x06
#define L2CAP_CMD_DISCONNECT_RESPONSE   0x07
#define L2CAP_CMD_INFORMATION_REQUEST   0x0A
#define L2CAP_CMD_INFORMATION_RESPONSE  0x0B

// Used For Connection Response - Remember to Include High Byte
#define PENDING     0x01
#define SUCCESSFUL  0x00

/* Bluetooth L2CAP PSM - see http://www.bluetooth.org/Technical/AssignedNumbers/logical_link.htm */
#define SDP_PSM         0x01 // Service Discovery Protocol PSM Value
#define RFCOMM_PSM      0x03 // RFCOMM PSM Value
#define HID_CTRL_PSM    0x11 // HID_Control PSM Value
#define HID_INTR_PSM    0x13 // HID_Interrupt PSM Value

// Used to determine if it is a Bluetooth dongle
#define WI_SUBCLASS_RF      0x01 // RF Controller
#define WI_PROTOCOL_BT      0x01 // Bluetooth Programming Interface

#define BTD_MAX_ENDPOINTS   4
#define BTD_NUM_SERVICES    4 // Max number of Bluetooth services - if you need more than 4 simply increase this number

#define PAIR    1

class BluetoothService;

/**
 * The Bluetooth Dongle class will take care of all the USB communication
 * and then pass the data to the BluetoothService classes.
 */
class BTD : public USBDeviceConfig, public UsbConfigXtracter {
public:
        /**
         * Constructor for the BTD class.
         * @param  p   Pointer to USB class instance.
         */
        BTD(USB *p);

        /** @name USBDeviceConfig implementation */
        /**
         * Address assignment and basic initialization is done here.
         * @param  parent   Hub number.
         * @param  port     Port number on the hub.
         * @param  lowspeed Speed of the device.
         * @return          0 on success.
         */
        uint8_t ConfigureDevice(uint8_t parent, uint8_t port, bool lowspeed);
        /**
         * Initialize the Bluetooth dongle.
         * @param  parent   Hub number.
         * @param  port     Port number on the hub.
         * @param  lowspeed Speed of the device.
         * @return          0 on success.
         */
        uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
        /**
         * Release the USB device.
         * @return 0 on success.
         */
        uint8_t Release();
        /**
         * Poll the USB Input endpoints and run the state machines.
         * @return 0 on success.
         */
        uint8_t Poll();

        /**
         * Get the device address.
         * @return The device address.
         */
        virtual uint8_t GetAddress() {
                return bAddress;
        };

        /**
         * Used to check if the dongle has been initialized.
         * @return True if it's ready.
         */
        virtual bool isReady() {
                return bPollEnable;
        };

        /**
         * Used by the USB core to check what this driver support.
         * @param  klass The device's USB class.
         * @return       Returns true if the device's USB class matches this driver.
         */
        virtual bool DEVCLASSOK(uint8_t klass) {
                return (klass == USB_CLASS_WIRELESS_CTRL);
        };

        /**
         * Used by the USB core to check what this driver support.
         * Used to set the Bluetooth address into the PS3 controllers.
         * @param  vid The device's VID.
         * @param  pid The device's PID.
         * @return     Returns true if the device's VID and PID matches this driver.
         */
        virtual bool VIDPIDOK(uint16_t vid, uint16_t pid) {
                if(vid == IOGEAR_GBU521_VID && pid == IOGEAR_GBU521_PID)
                        return true;
                if(my_bdaddr[0] != 0x00 || my_bdaddr[1] != 0x00 || my_bdaddr[2] != 0x00 || my_bdaddr[3] != 0x00 || my_bdaddr[4] != 0x00 || my_bdaddr[5] != 0x00) { // Check if Bluetooth address is set
                        if(vid == PS3_VID && (pid == PS3_PID || pid == PS3NAVIGATION_PID || pid == PS3MOVE_PID))
                                return true;
                }
                return false;
        };
        /**@}*/

        /** @name UsbConfigXtracter implementation */
        /**
         * UsbConfigXtracter implementation, used to extract endpoint information.
         * @param conf  Configuration value.
         * @param iface Interface number.
         * @param alt   Alternate setting.
         * @param proto Interface Protocol.
         * @param ep    Endpoint Descriptor.
         */
        void EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *ep);
        /**@}*/

        /** Disconnects both the L2CAP Channel and the HCI Connection for all Bluetooth services. */
        void disconnect();

        /**
         * Register Bluetooth dongle members/services.
         * @param  pService Pointer to BluetoothService class instance.
         * @return          The service ID on success or -1 on fail.
         */
        int8_t registerBluetoothService(BluetoothService *pService) {
                for(uint8_t i = 0; i < BTD_NUM_SERVICES; i++) {
                        if(!btService[i]) {
                                btService[i] = pService;
                                return i; // Return ID
                        }
                }
                return -1; // Error registering BluetoothService
        };

        /** @name HCI Commands */
        /**
         * Used to send a HCI Command.
         * @param data   Data to send.
         * @param nbytes Number of bytes to send.
         */
        void HCI_Command(uint8_t* data, uint16_t nbytes);
        /** Reset the Bluetooth dongle. */
        void hci_reset();
        /** Read the Bluetooth address of the dongle. */
        void hci_read_bdaddr();
        /** Read the HCI Version of the Bluetooth dongle. */
        void hci_read_local_version_information();
        /**
         * Set the local name of the Bluetooth dongle.
         * @param name Desired name.
         */
        void hci_set_local_name(const char* name);
        /** Enable visibility to other Bluetooth devices. */
        void hci_write_scan_enable();
        /** Disable visibility to other Bluetooth devices. */
        void hci_write_scan_disable();
        /** Read the remote devices name. */
        void hci_remote_name();
        /** Accept the connection with the Bluetooth device. */
        void hci_accept_connection();
        /**
         * Disconnect the HCI connection.
         * @param handle The HCI Handle for the connection.
         */
        void hci_disconnect(uint16_t handle);
        /**
         * Respond with the pin for the connection.
         * The pin is automatically set for the Wii library,
         * but can be customized for the SPP library.
         */
        void hci_pin_code_request_reply();
        /** Respons when no pin was set. */
        void hci_pin_code_negative_request_reply();
        /**
         * Command is used to reply to a Link Key Request event from the BR/EDR Controller
         * if the Host does not have a stored Link Key for the connection.
         */
        void hci_link_key_request_negative_reply();
        /** Used to try to authenticate with the remote device. */
        void hci_authentication_request();
        /** Start a HCI inquiry. */
        void hci_inquiry();
        /** Cancel a HCI inquiry. */
        void hci_inquiry_cancel();
        /** Connect to last device communicated with. */
        void hci_connect();
        /**
         * Connect to device.
         * @param bdaddr Bluetooth address of the device.
         */
        void hci_connect(uint8_t *bdaddr);
        /** Used to a set the class of the device. */
        void hci_write_class_of_device();
        /**@}*/

        /** @name L2CAP Commands */
        /**
         * Used to send L2CAP Commands.
         * @param handle      HCI Handle.
         * @param data        Data to send.
         * @param nbytes      Number of bytes to send.
         * @param channelLow,channelHigh  Low and high byte of channel to send to.
         * If argument is omitted then the Standard L2CAP header: Channel ID (0x01) for ACL-U will be used.
         */
        void L2CAP_Command(uint16_t handle, uint8_t* data, uint8_t nbytes, uint8_t channelLow = 0x01, uint8_t channelHigh = 0x00);
        /**
         * L2CAP Connection Request.
         * @param handle HCI handle.
         * @param rxid   Identifier.
         * @param scid   Source Channel Identifier.
         * @param psm    Protocol/Service Multiplexer - see: https://www.bluetooth.org/Technical/AssignedNumbers/logical_link.htm.
         */
        void l2cap_connection_request(uint16_t handle, uint8_t rxid, uint8_t* scid, uint16_t psm);
        /**
         * L2CAP Connection Response.
         * @param handle HCI handle.
         * @param rxid   Identifier.
         * @param dcid   Destination Channel Identifier.
         * @param scid   Source Channel Identifier.
         * @param result Result - First send ::PENDING and then ::SUCCESSFUL.
         */
        void l2cap_connection_response(uint16_t handle, uint8_t rxid, uint8_t* dcid, uint8_t* scid, uint8_t result);
        /**
         * L2CAP Config Request.
         * @param handle HCI Handle.
         * @param rxid   Identifier.
         * @param dcid   Destination Channel Identifier.
         */
        void l2cap_config_request(uint16_t handle, uint8_t rxid, uint8_t* dcid);
        /**
         * L2CAP Config Response.
         * @param handle HCI Handle.
         * @param rxid   Identifier.
         * @param scid   Source Channel Identifier.
         */
        void l2cap_config_response(uint16_t handle, uint8_t rxid, uint8_t* scid);
        /**
         * L2CAP Disconnection Request.
         * @param handle HCI Handle.
         * @param rxid   Identifier.
         * @param dcid   Device Channel Identifier.
         * @param scid   Source Channel Identifier.
         */
        void l2cap_disconnection_request(uint16_t handle, uint8_t rxid, uint8_t* dcid, uint8_t* scid);
        /**
         * L2CAP Disconnection Response.
         * @param handle HCI Handle.
         * @param rxid   Identifier.
         * @param dcid   Device Channel Identifier.
         * @param scid   Source Channel Identifier.
         */
        void l2cap_disconnection_response(uint16_t handle, uint8_t rxid, uint8_t* dcid, uint8_t* scid);
        /**
         * L2CAP Information Response.
         * @param handle       HCI Handle.
         * @param rxid         Identifier.
         * @param infoTypeLow,infoTypeHigh  Infotype.
         */
        void l2cap_information_response(uint16_t handle, uint8_t rxid, uint8_t infoTypeLow, uint8_t infoTypeHigh);
        /**@}*/

        /** Use this to see if it is waiting for a incoming connection. */
        bool watingForConnection;
        /** This is used by the service to know when to store the device information. */
        bool l2capConnectionClaimed;
        /** This is used by the SPP library to claim the current SDP incoming request. */
        bool sdpConnectionClaimed;
        /** This is used by the SPP library to claim the current RFCOMM incoming request. */
        bool rfcommConnectionClaimed;

        /** The name you wish to make the dongle show up as. It is set automatically by the SPP library. */
        const char* btdName;
        /** The pin you wish to make the dongle use for authentication. It is set automatically by the SPP and BTHID library. */
        const char* btdPin;

        /** The bluetooth dongles Bluetooth address. */
        uint8_t my_bdaddr[6];
        /** HCI handle for the last connection. */
        uint16_t hci_handle;
        /** Last incoming devices Bluetooth address. */
        uint8_t disc_bdaddr[6];
        /** First 30 chars of last remote name. */
        char remote_name[30];
        /**
         * The supported HCI Version read from the Bluetooth dongle.
         * Used by the PS3BT library to check the HCI Version of the Bluetooth dongle,
         * it should be at least 3 to work properly with the library.
         */
        uint8_t hci_version;

        /** Call this function to pair with a Wiimote */
        void pairWithWiimote() {
                pairWithWii = true;
                hci_state = HCI_CHECK_DEVICE_SERVICE;
        };
        /** Used to only send the ACL data to the Wiimote. */
        bool connectToWii;
        /** True if a Wiimote is connecting. */
        bool incomingWii;
        /** True when it should pair with a Wiimote. */
        bool pairWithWii;
        /** True if it's the new Wiimote with the Motion Plus Inside or a Wii U Pro Controller. */
        bool motionPlusInside;
        /** True if it's a Wii U Pro Controller. */
        bool wiiUProController;

        /** Call this function to pair with a Wiimote */
        void pairWithHID() {
                pairWithHIDDevice = true;
                hci_state = HCI_CHECK_DEVICE_SERVICE;
        };
        /** Used to only send the ACL data to the Wiimote. */
        bool connectToHIDDevice;
        /** True if a Wiimote is connecting. */
        bool incomingHIDDevice;
        /** True when it should pair with a device like a mouse or keyboard. */
        bool pairWithHIDDevice;

        /**
         * Read the poll interval taken from the endpoint descriptors.
         * @return The poll interval in ms.
         */
        uint8_t readPollInterval() {
                return pollInterval;
        };

protected:
        /** Pointer to USB class instance. */
        USB *pUsb;
        /** Device address. */
        uint8_t bAddress;
        /** Endpoint info structure. */
        EpInfo epInfo[BTD_MAX_ENDPOINTS];

        /** Configuration number. */
        uint8_t bConfNum;
        /** Total number of endpoints in the configuration. */
        uint8_t bNumEP;
        /** Next poll time based on poll interval taken from the USB descriptor. */
        uint32_t qNextPollTime;

        /** Bluetooth dongle control endpoint. */
        static const uint8_t BTD_CONTROL_PIPE;
        /** HCI event endpoint index. */
        static const uint8_t BTD_EVENT_PIPE;
        /** ACL In endpoint index. */
        static const uint8_t BTD_DATAIN_PIPE;
        /** ACL Out endpoint index. */
        static const uint8_t BTD_DATAOUT_PIPE;

        /**
         * Used to print the USB Endpoint Descriptor.
         * @param ep_ptr Pointer to USB Endpoint Descriptor.
         */
        void PrintEndpointDescriptor(const USB_ENDPOINT_DESCRIPTOR* ep_ptr);

private:
        void Initialize(); // Set all variables, endpoint structs etc. to default values
        BluetoothService *btService[BTD_NUM_SERVICES];

        uint16_t PID, VID; // PID and VID of device connected

        uint8_t pollInterval;
        bool bPollEnable;

        bool pairWiiUsingSync; // True if paring was done using the Wii SYNC button.
        bool checkRemoteName; // Used to check remote device's name before connecting.
        bool incomingPS4; // True if a PS4 controller is connecting
        uint8_t classOfDevice[3]; // Class of device of last device

        /* Variables used by high level HCI task */
        uint8_t hci_state; // Current state of Bluetooth HCI connection
        uint16_t hci_counter; // Counter used for Bluetooth HCI reset loops
        uint16_t hci_num_reset_loops; // This value indicate how many times it should read before trying to reset
        uint16_t hci_event_flag; // HCI flags of received Bluetooth events
        uint8_t inquiry_counter;

        uint8_t hcibuf[BULK_MAXPKTSIZE]; // General purpose buffer for HCI data
        uint8_t l2capinbuf[BULK_MAXPKTSIZE]; // General purpose buffer for L2CAP in data
        uint8_t l2capoutbuf[14]; // General purpose buffer for L2CAP out data

        /* State machines */
        void HCI_event_task(); // Poll the HCI event pipe
        void HCI_task(); // HCI state machine
        void ACL_event_task(); // ACL input pipe

        /* Used to set the Bluetooth Address internally to the PS3 Controllers */
        void setBdaddr(uint8_t* BDADDR);
        void setMoveBdaddr(uint8_t* BDADDR);
};

/** All Bluetooth services should inherit this class. */
class BluetoothService {
public:
        BluetoothService(BTD *p) : pBtd(p) {
                if(pBtd)
                        pBtd->registerBluetoothService(this); // Register it as a Bluetooth service
        };
        /**
         * Used to pass acldata to the Bluetooth service.
         * @param ACLData Pointer to the incoming acldata.
         */
        virtual void ACLData(uint8_t* ACLData) = 0;
        /** Used to run the different state machines in the Bluetooth service. */
        virtual void Run() = 0;
        /** Used to reset the Bluetooth service. */
        virtual void Reset() = 0;
        /** Used to disconnect both the L2CAP Channel and the HCI Connection for the Bluetooth service. */
        virtual void disconnect() = 0;

        /**
         * Used to call your own function when the device is successfully initialized.
         * @param funcOnInit Function to call.
         */
        void attachOnInit(void (*funcOnInit)(void)) {
                pFuncOnInit = funcOnInit; // TODO: This really belong in a class of it's own as it is repeated several times
        };

protected:
        /**
         * Called when a device is successfully initialized.
         * Use attachOnInit(void (*funcOnInit)(void)) to call your own function.
         * This is useful for instance if you want to set the LEDs in a specific way.
         */
        virtual void onInit() = 0;

        /** Used to check if the incoming L2CAP data matches the HCI Handle */
        bool checkHciHandle(uint8_t *buf, uint16_t handle) {
                return (buf[0] == (handle & 0xFF)) && (buf[1] == ((handle >> 8) | 0x20));
        }

        /** Pointer to function called in onInit(). */
        void (*pFuncOnInit)(void);

        /** Pointer to BTD instance. */
        BTD *pBtd;

        /** The HCI Handle for the connection. */
        uint16_t hci_handle;

        /** L2CAP flags of received Bluetooth events. */
        uint32_t l2cap_event_flag;

        /** Identifier for L2CAP commands. */
        uint8_t identifier;
};

#endif