DS4-BT

Source: http://eleccelerator.com/wiki/index.php?title=DualShock_4 (full paste 17:50 UTC, 18 January 2014 )

Bluetooth

Bluetooth module Qualcomm: Qualcomm Atheros AR3002-BL3D

Bluetooth is a wireless technology for creating personal area networks operating in the 2.4 GHz unlicensed band, with a default range of 10 meters.

An overview of Bluetooth:

http://engineeringagenda.com/agenda/2013/09/bluetooth/ An introduction to Bluetooth
http://www.eetimes.com/document.asp?doc_id=1200909 An introduction to debugging Bluetooth in embedded systems

Capable of streaming 32Khz sound to the controllers speakers for up to 2 players, but that reduces to 16Khz when 3 or more players are hooked up.

UART HCI

Testpoints

On the DS4 circuit itself is a Qualcomm Atheros AR3002 module and the UART pins have test points.

You can clearly see the UART HCI receiving/transmitting data when you analyze the traffic on the RX and TX pins (See testpoints).

The data seems to be at a baud rate of exactly 3Mbit/s , sticking with HCI standards, meaning it's 8N1 (8 data bits, No parity, 1 stop bit). The report rate seems to be once every 1.3 millisecond, but there are some occasional gaps in between that can reach 15 milliseconds.

This file is a capture of the traffic over the UART HCI, Wireshark can be used for parsing this PCAP file.

Similar to the file before but uses data while running "the Playroom" app on the PS4, so that it shows motors, speaker, and LED activity. This file needs to be decompressed using gzip first, then opened with Wireshark. Once opened, it needs to be sorted by timestamp.

Maximum theoretical update frequency per second (Minimum theoretical latency)

Controllers	Input+Output disabled	Output enabled	Input enabled
1	800x (1.25ms)	400 (2.50ms)	125 (8ms)
2	400x (2.50ms)	200 (5ms)	62.50 (16ms)
3	266x (3,75ms)	133 (7.5ms)	41.66 (24ms)
4	200x (5ms)	100 (10ms)	31.25 (32ms)

In comparison, USB has 250x (4ms)

Overlapping channels BT/WiFi

archaic BT/Wifi channels

Center Frequency (2.4xx Ghz)	BT 2.0 Channel	BT 4.0 Channel	WiFi channel (center freq. in GHz)
00	Guard	Guard
01	Guard	Guard	1 (2.412)
02	0	0
03	1	0
04	2	1
05	3	1
06	4	2		2 (2.417)
07	5	2
08	6	3
09	7	3
10	8	4
11	9	4			3 (2.422)
12	10	5
13	11	5
14	12	6
15	13	6
16	14	7				4 (2.427)
17	15	7
18	16	8
19	17	8
20	18	9
21	19	9					5 (2.432)
22	20	10
23	21	10
24	22	11
25	23	11
26	24	12	6 (2.437)
27	25	12
28	26	13
29	27	13
30	28	14
31	29	14		7 (2.442)
32	30	15
33	31	15
34	32	16
35	33	16
36	34	17			8 (2.447)
37	35	17
38	36	18
39	37	18
40	38	19
41	39	19				9 (2.452)
42	40	20
43	41	20
44	42	21
45	43	21
46	44	22					10 (2.457)
47	45	22
48	46	23
49	47	23
50	48	24
51	49	24	11 (2.462)
52	50	25
53	51	25
54	52	26
55	53	26
56	54	27		12 (2.467)
57	55	27
58	56	28
59	57	28
60	58	29
61	59	29			13 (2.472)
62	60	30
63	61	30
64	62	31
65	63	31
66	64	32
67	65	32
68	66	33
69	67	33
70	68	34
71	69	34
72	70	35
73	71	35
74	72	36
75	73	36
76	74	37
77	75	37
78	76	38
79	77	38
80	78	39
81	Guard	39
82		Guard
83		Guard

Bluetooth Adressing

Each Bluetooth unit has a unique 48-bit address (BD_ADDR).

_lsbxxxx	xxxx	xxxx	xxxx	xxxx	xxxx	xxxx	xxxx	xxxx	xxxx	xxxx	xxxx^msb
Company_assigned						Company_id
Lower Adress Part (24-bit)						Upper Adress Part (8-bit)		Non-Significant Adress Part (16-bit)

If you spoof a previously paired DS4's BDADDR (is the unique address of a Bluetooth device, similar to the MAC address of a network card) and class, then using "sudo hcitool cc <ps4's bdaddr>" will wake up the PS4. If the same cc request comes from an unknown BDADDR, nothing happens.

The DualShock 4 has two modes, one where you can pair it with a computer (hold PS and share at the same time until the light blinks twice in quick succession rapidly), and another mode when it is used with a PS4.

Class of Device/Service (CoD)

In practice, most Bluetooth clients scan their surroundings in two successive steps: they first look for all bluetooth devices around them and find out their "class". You can do this on Linux with the hcitool scan command. Then, they use SDP in order to check if a device in a given class offers the type of service that they want.

In the PS4 mode, the DualShock 4 appears to be advertised as two devices (neither has a name), one is a game controller and the other is an audio device:

The game controller has a class of Device/Service (CoD) 0x002508:

Major Service Class: Limited Discoverable Mode (0x2000)
Major Device Class : Peripheral (mouse, joystick, keyboards etc) (0x500)
Minor Device Class : Gamepad (0x08)

The audio device is class 0x200404:

Major Service Class: Audio (Speaker, Microphone, Headset service, ...)
Major Device Class : Audio/Video (headset, speaker, stereo, video display, VCR, ...)
Minor Device Class : Wearable Headset Device

(Online Generator http://bluetooth-pentest.narod.ru/software/bluetooth_class_of_device-service_generator.html)

Service Discovery Protocol (SDP)

SDP used by the PS4 the first time a device tries to connect, whereas the DS4 does it each time it connects to the PS4 (you can use Wireshark for parsing SDP files, but double check manually due to wrong interpretation or not standard protocol).

PDU

SDP uses a request/response model where each transaction consists of one request PDU (protocol data unit) and one response PDU.

PDU value	Description
0x00	Reserved
0x01	Error Response
0x02	Search Request
0x03	Search Response
0x04	Attribute Request
0x05	Attribute Response
0x06	Search Attribute Request
0x07	Search Attribute Response
0x08-0xFF	Reserved

Data Element

an attribute id or an attribute value is often represented as a data element.

The format of a data element follows the TLV (type-length-value) convention.

byte index	bit 7	bit 2
[0]	Type	Length
[1-4]	additional field
[x]	Value

Type descriptor

Type Descriptor value	Valid Size descriptor values	type description
0	0	Nil
1	0, 1, 2, 3, 4	Unsigned Integer
2	0, 1, 2, 3, 4	Signed twos-complements integer
3	1, 2, 4	Universally Unique Identifier (UUID)
4	5, 6, 7	text string
5	0	booleans
6	5, 6, 7	Data element sequence, a data element whose data field is a sequence of data elements
7	5, 6, 7	Data element alternative, data element whose data filed is a sequence of data elements from which one data elements is to be selected
8	5, 6, 7	Uniform Resource Locator (URL)
9-31		Reserved

Length descriptor

Size Index	Additional bits	Data size
0	0	1 byte
1	0	2 bytes
2	0	4 bytes
3	0	8 bytes
4	0	16 bytes
5	8	The data size is contained in the additional 8 bits, which are interpreted as an unsigned integer
6	16	The data size is contained in the additional 16 bits, which are interpreted as an unsigned integer
7	32	The data size is contained in the additional 32 bits, which are interpreted as an unsigned integer

e.g.: 0x35 = 00110101 (binary) = 00110 | 101 = Type 6 | Length size index 5

PS4

Request

(without 0x02 0x1520 0x1800 0x1400 0x4000 see header section)

06 00 01 00 0f 35 03 19 01 00 08 00 35 05 0a 00 00 ff ff 00

0x06 PDU Service Search Attribute Request
0x0001 Transaction ID
0x000F Length
0x3503: Data element (Type descriptor: 6, Size index: 5) 3 bytes
- 0x19: Data element (type: 3 (UUID), size index: 1 (2 bytes))
- 0x0100: L2CAP
0x0800: Maximum Attribute Byte count (2048)?
0x0A: Data element (type:1, Size index: 2 (4 bytes)
- 0x0000FFFF: Attribute ID list
0x00: Continuation State

Response

(without 0x02 0x1520 0x5C01 0x5801 0x4000), see header section)

Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00000000  07 00 01 01 53 01 50 36 01 4D 36 00 32 09 00 00  ....S.P6.M6.2...
00000010  0A 00 01 00 05 09 00 01 35 03 19 11 0A 09 00 04  ........5.......
00000020  35 10 35 06 19 01 00 09 00 19 35 06 19 00 19 09  5.5.......5.....
00000030  01 02 09 00 09 35 08 35 06 19 11 0D 09 01 02 36  .....5.5.......6
00000040  00 32 09 00 00 0A 00 01 00 06 09 00 01 35 03 19  .2...........5..
00000050  11 0B 09 00 04 35 10 35 06 19 01 00 09 00 19 35  .....5.5.......5
00000060  06 19 00 19 09 01 02 09 00 09 35 08 35 06 19 11  ..........5.5...
00000070  0D 09 01 02 36 00 3B 09 00 00 0A 00 01 00 07 09  ....6.;.........
00000080  00 01 35 06 19 11 0E 19 11 0F 09 00 04 35 10 35  ..5..........5.5
00000090  06 19 01 00 09 00 17 35 06 19 00 17 09 01 03 09  .......5........
000000A0  00 09 35 08 35 06 19 11 0E 09 01 04 09 03 11 09  ..5.5...........
000000B0  00 02 36 00 4D 09 00 00 0A 00 01 00 08 09 00 01  ..6.M...........
000000C0  35 03 19 11 0C 09 00 04 35 10 35 06 19 01 00 09  5.......5.5.....
000000D0  00 17 35 06 19 00 17 09 01 03 09 00 09 35 08 35  ..5..........5.5
000000E0  06 19 11 0E 09 01 04 09 00 0D 35 10 35 06 19 01  ..........5.5...
000000F0  00 09 00 1B 35 06 19 00 17 09 01 03 09 03 11 09  ....5...........
00000100  00 01 36 00 52 09 00 00 0A 00 01 00 0A 09 00 01  ..6.R...........
00000110  35 03 19 12 00 09 00 04 35 0D 35 06 19 01 00 09  5.......5.5.....
00000120  00 01 35 03 19 00 01 09 00 09 35 08 35 06 19 12  ..5.......5.5...
00000130  00 09 01 03 09 02 00 09 01 03 09 02 01 09 05 4C  ...............L
00000140  09 02 02 09 08 1F 09 02 03 09 01 00 09 02 04 28  ...............(
00000150  01 09 02 05 09 00 02 00                          ........

Universal Attributes

Universally Unique Identifier (UUID)

UUID Protocol Identifiers(shall be used only in the Profile Descriptor List attribute).

07 PDU Service Search Attribute Response
00 01 Transaction ID
01 53 Length
01 50 Length

36| 01 4D type:6, size index:6 + Length

See assigned IDs:

36 00 32 Length

0x0000 Service Record Handle-->value:

{0x010005 (65541)}

0x0001 Service Class ID List-->value:

{0x110A Audio Source} //Advanced Audio Distribution Profile (A2DP)

0x0004 Protocol Descriptor List-->value:

{0x0100 L2CAP , 0x0019 } ,{ 0x0019 Audio/Video Distribution Transport Protocol (AVDTP) , 0x0102 (258)}

0x0009 Bluetooth Profile Descriptor List-->value:

{0x110D Advanced Audio Distribution , 0x0102 (258)}

36 00 32 Length

0x0000 Service Record Handle-->value:

{ 0x010006 (65542) }

0x0001 Service Class ID List-->value:

{ 0x110B Audio Sink } //A2DP

0x0004 Protocol Descriptor List-->value:

{ 0x0100 L2CAP , 0x0019 (25) } , { 0x0019 Audio/Video Distribution Transport Protocol (AVDTP) , 0x0102 (258) }

0x0009 Bluetooth Profile Descriptor List-->value:

{0x110D Advanced Audio Distribution , 0x0102 (258)}

36 00 3B Length

0x0000 Service Record Handle-->value:

{ 0x010007 (65543) }

0x0001 Service ClassID List-->value:

{ 0x110E Audio/Video Remote Control , 0x110F Video Conferencing / A/V Remote Control Controller } ^[1]

0x0004 Protocol Descriptor List-->value:

{ 0x0100 L2CAP , 0x0017 (23) } , { 0x0017 Audio/Video Control Transport Protocol (AVCTP) , 0x0103 (259) }

0x0009 Bluetooth Profile Descriptor List-->value:

{ 0x110E Audio/Video Remote Control , 0x0104 (260) }

0x0311 Supported Features-->value:

{ 0x02 }

36 00 4D Length

0x0000 Service Record Handle-->value:

{ 0x010008 (65544) }

0x0001 Service Class ID List-->value:

{ 0x110C Audio/Video Remote Control Target }

0x0004 Protocol Descriptor List-->value:

{ 0x0100 L2CAP , 0x0017 (23) } , { 0x0017 Audio/Video Control Transport Protocol (AVCTP) , 0x0103 (259) }

0x0009 Bluetooth Profile Descriptor List-->value:

{ 0x110E Audio/Video Remote Control , 0x0104 (260) }

0x000D Additional Protocol Descriptor Lists-->value:

{ 0x0100 L2CAP , 0x001B (27) } { 0x0017 Audio/Video Control Transport Protocol (AVCTP) , 0x0103 (259) }

0x0311 Supported Features-->value:

{ 0x01 } }}

36 00 52 Length

0x0000 Service Record Handle-->value:

{0x01000A (65546)}

0x0001 Service Class ID List-->value:

{ 0x1200 PnP Information }

0x0004 Protocol Descriptor List-->value:

{ 0x0100 L2CAP , 0x0001) } , { 0x0001 SDP }

0x0009 Bluetooth Profile Descriptor List-->value:

{ 0x1200 PnP Information , 0x0103 (259) }

0x0200 Specification ID-->value:

{ 0x0103 (259) }

0x0201 Vendor ID^[2]-->value:

{ 0x054C } (Sony Corp.)

0x0202 Product ID-->value:

{ 0x081F }

0x0203 Version-->value:

{ 0x0100 }

0x0204 Primary Record-->value:

{ 0x01 }

0x0205 Vendor ID Source-->value:

{ 0x0002 }

DS4

Response

This response is 708-byte long: the DS4 does not respect the 672-byte outgoing L2CAP MTU.

Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00000000  07 00 01 02 BF 02 BC 36 02 B9 36 02 61 09 00 00  ....¿.¼6.¹6.a...
00000010  0A 00 01 00 01 09 00 01 35 03 19 11 24 09 00 04  ........5...$...
00000020  35 0D 35 06 19 01 00 09 00 11 35 03 19 00 11 09  5.5.......5.....
00000030  00 06 35 09 09 65 6E 09 00 6A 09 01 00 09 00 09  ..5..en..j......
00000040  35 08 35 06 19 11 24 09 01 00 09 00 0D 35 0F 35  5.5...$......5.5
00000050  0D 35 06 19 01 00 09 00 13 35 03 19 00 11 09 01  .5.......5......
00000060  00 25 13 57 69 72 65 6C 65 73 73 20 43 6F 6E 74  .%.Wireless Cont
00000070  72 6F 6C 6C 65 72 09 01 01 25 0F 47 61 6D 65 20  roller...%.Game 
00000080  43 6F 6E 74 72 6F 6C 6C 65 72 09 01 02 25 1B 53  Controller...%.S
00000090  6F 6E 79 20 43 6F 6D 70 75 74 65 72 20 45 6E 74  ony Computer Ent
000000A0  65 72 74 61 69 6E 6D 65 6E 74 09 02 00 09 01 00  ertainment......
000000B0  09 02 01 09 01 11 09 02 02 08 08 09 02 03 08 00  ................
000000C0  09 02 04 28 00 09 02 05 28 01 09 02 06 36 01 6C  ...(....(....6.l
000000D0  36 01 69 08 22 26 01 64 05 01 09 05 A1 01 85 01  6.i."&.d....¡.….
000000E0  09 30 09 31 09 32 09 35 15 00 26 FF 00 75 08 95  .0.1.2.5..&ÿ.u.•
000000F0  04 81 02 09 39 15 00 25 07 75 04 95 01 81 42 05  ....9..%.u.•..B.
00000100  09 19 01 29 0E 15 00 25 01 75 01 95 0E 81 02 75  ...)...%.u.•...u
00000110  06 95 01 81 01 05 01 09 33 09 34 15 00 26 FF 00  .•......3.4..&ÿ.
00000120  75 08 95 02 81 02 06 04 FF 85 02 09 24 95 24 B1  u.•.....ÿ…..$•$±
00000130  02 85 A3 09 25 95 30 B1 02 85 05 09 26 95 28 B1  .…£.%•0±.…..&•(±
00000140  02 85 06 09 27 95 34 B1 02 85 07 09 28 95 30 B1  .…..'•4±.…..(•0±
00000150  02 85 08 09 29 95 2F B1 02 06 03 FF 85 03 09 21  .…..)•/±...ÿ…..!
00000160  95 26 B1 02 85 04 09 22 95 2E B1 02 85 F0 09 47  •&±.….."•.±.…ð.G
00000170  95 3F B1 02 85 F1 09 48 95 3F B1 02 85 F2 09 49  •?±.…ñ.H•?±.…ò.I
00000180  95 0F B1 02 06 00 FF 85 11 09 20 15 00 26 FF 00  •.±...ÿ….. ..&ÿ.
00000190  75 08 95 4D 81 02 09 21 91 02 85 12 09 22 95 8D  u.•M...!‘.….."•.
000001A0  81 02 09 23 91 02 85 13 09 24 95 CD 81 02 09 25  ...#‘.…..$•Í...%
000001B0  91 02 85 14 09 26 96 0D 01 81 02 09 27 91 02 85  ‘.…..&–.....'‘.…
000001C0  15 09 28 96 4D 01 81 02 09 29 91 02 85 16 09 2A  ..(–M....)‘.…..*
000001D0  96 8D 01 81 02 09 2B 91 02 85 17 09 2C 96 CD 01  –.....+‘.…..,–Í.
000001E0  81 02 09 2D 91 02 85 18 09 2E 96 0D 02 81 02 09  ...-‘.…...–.....
000001F0  2F 91 02 85 19 09 30 96 22 02 81 02 09 31 91 02  /‘.…..0–"....1‘.
00000200  06 80 FF 85 82 09 22 95 3F B1 02 85 83 09 23 B1  .€ÿ…‚."•?±.…ƒ.#±
00000210  02 85 84 09 24 B1 02 85 90 09 30 B1 02 85 91 09  .…„.$±.…..0±.…‘.
00000220  31 B1 02 85 92 09 32 B1 02 85 93 09 33 B1 02 85  1±.…’.2±.…“.3±.…
00000230  A0 09 40 B1 02 85 A4 09 44 B1 02 C0 09 02 07 35   .@±.…¤.D±.À...5
00000240  08 35 06 09 04 09 09 01 00 09 02 08 28 00 09 02  .5..........(...
00000250  09 28 01 09 02 0A 28 01 09 02 0B 09 01 00 09 02  .(....(.........
00000260  0C 09 1F 40 09 02 0D 28 00 09 02 0E 28 00 36 00  ...@...(....(.6.
00000270  52 09 00 00 0A 00 01 00 02 09 00 01 35 03 19 12  R...........5...
00000280  00 09 00 04 35 0D 35 06 19 01 00 09 00 01 35 03  ....5.5.......5.
00000290  19 00 01 09 00 09 35 08 35 06 19 12 00 09 01 03  ......5.5.......
000002A0  09 02 00 09 01 03 09 02 01 09 05 4C 09 02 02 09  ...........L....
000002B0  05 C4 09 02 03 09 01 00 09 02 04 28 01 09 02 05  .Ä.........(....
000002C0  09 00 02 00                                      ....

0x07 PDU

0x0001 Transaction ID

0x02BF Length

0x02BC Length

0x36|02B9 type:6, size index:6 + Length

0x36|0261 type:6, size index:6 + Length first chunk

0x0000 Service Record Handle-->value {0x010001}

0x0001 Service Class ID List-->value {0x1124 Human Interface Device (HID)}
0x0004 Protocol Descriptor List-->value {0x0100 L2CAP , 0x0011 } ,{ 0x0011 Human Interface Device Profile (HIDP) , 0x0102 (258)}
0x0006 Language Base Attribute ID List^[3]-->: value = { 0x656E ("en"), 0x6A (106), 0x100(256) }
0x0009 Bluetooth Profile Descriptor List--> value = { 0x1124 Human Interface Device Service , 0x100(256)}
0x000D Additional Protocol Descriptor Lists--> value = { { 0x0100 L2CAP , 0x0013(19) } , { 0x00 11HIDP } }
0X0100 Service Name--> value = "Wireless Controller"
0x0101 Service Description--> value = "Game Controller"
0x0102 Provider Name--> value = "Sony Computer Entertainment"
0x0200 GOEP L2CAP PSM/Group Id/IP Subnet (0x200)--> value = 0x100 (256)
0x0201 Service Database State--> value = 273

...

0x36|0052 type:6, size index:6 + Length second chunk

0x0000 Service Record Handle-->value {0x010002}

0x0001 Service Class ID List-->value {0x1200 Device Identification (DID)}
0x0004 Protocol Descriptor List-->

0x0200 Specification ID-->value: 0x0103
0x0201 Vendor ID-->value: 0x054C (Sony Corp.)
0x0202 Product ID-->value: 0x05C4 (Sony Computer Entertainment Wireless Controller)
0x0203 Version-->value: 0x0100
0x0204 Primary Record-->value: 0x01
0x0205 Vendor ID Source-->value: 0x0002

Notes:

↑ The Audio/Video Remote Control Profile (AVRCP) specification v1.3 and later require that 0x110E also be included in the ServiceClassIDList before 0x110F for backwards compatibility
↑ See Device Descriptor
↑ A list of language bases that contains a language identifier according to ISO 639:1 , a character encoding identifier and a base attribute ID (0x0100) for the languages used in the service record.

HID Report header & footer

Examples

HCI Command Packet example

0000   01 13 0c f8 57 69 72 65 6c 65 73 73 20 43 6f 6e  ....Wireless Con
0010   74 72 6f 6c 6c 65 72 00 00 00 00 00 00 00 00 00  troller.........
0020   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0030   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0040   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0050   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0060   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0070   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0080   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0090   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00a0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00b0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00c0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00d0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00e0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00f0   00 00 00 00 00 00 00 00 00 00 00 00              ............

0x01: HCI Command Packet

0x130C (0x0C13) Op-code (16 bits): identifies the command:

OGF (Op-code Group Field, most significant 6 bits):

OCF (Op-code Command Field, least significant 10 bits):

0xF8 (248) Length of Packet

HCI Event Packet example

04 13 05 01 15 00 01 00

0x04 Packet Type: HCI Event Packet

0x13 Event code

0x05 Parameter total length

0x01 Number of Connection handles

0x1500 (0x15) Connection handle

0x0100 (1) Number of completed packets

Here's a sample HCI ACL Data Packet transaction that represents a report from the DS4 to the PS4:

Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00000000  02 15 20 53 00 4F 00 42 00 A1 11 C0 00 83 81 7E
00000010  7E 08 00 3C 00 00 83 A2 07 F1 FF F9 FF 04 00 21
00000020  03 17 1F 29 F9 00 00 00 00 00 08 00 00 00 00 80
00000030  00 00 00 80 00 00 00 00 80 00 00 00 80 00 00 00
00000040  00 80 00 00 00 80 00 00 00 00 80 00 00 00 80 00
00000050  00 00 00 00 7D 0A 5D 0B

	Offset	Size	Value	Description
Header	0x00	0x01	0x02	(2) Packet Type: 0x01: HCI Command Packet (send commands to the Host Controller) 0x02: HCI ACL Data Packet (exchange Asynchronous Connection-Less data between the Host and Host Controller) 0x03: HCI SCO Data Packet (exchange Synchronous Connection-Oriented data) 0x04: HCI Event Packet (notify the Host when events occur)
	0x01	0x02	0x1520	(0x2015) Control information (_msb00 10 000000010101_lsb): for Packet type: 2 Broadcast (BC) flag (most significant 2 bits): 00 = point-to-point packet (no broadcast) (only two Bluetooth units involved) 01 = Active Slave Broadcast (Up to 7 slaves can be active in the Piconet) 10 = Parked Slave Broadcast (Up to 255 further slave devices can be inactive) Packet boundary (PB) flag (2 bits): 01 = continuing packet of a higher level message 10 = first packet of a higher level message Connection handle (least significant 12 bits): 0x15
	0x03	0x02	0x5300	(83) Total length
	0x05	0x02	0x4F00	(79) Data Length (Payload+Check)
	0x07	0x02	0x4200	(0x0042) Channel ID (CID)
HID portion	0x09	0x03	0xA111C0	Packet Payload header: INPUT DATA protocol code 0x11 (see Structure HID transaction)
HID portion	0x0C	0x48	0x0083 … 0x00	Data: See (speculation) USB data format for the first 64 bytes + 8 bytes NULL.
Check	0x54	0x04	0x7D0A5D0B	(0x0B5D0A7D) Data Integrity Check (CRC-32) To ensure that the packet is valid, this field is appended onto the end of the packet. Packet Payload is used to compute the Data Integrity Check (the CRC32's polynomial is 0x4C11DB7). You can use http://www.lammertbies.nl/comm/info/crc-calculation.html to try this yourself, enter the packet payload into the textbox (hex): First 75 bytes of the HID report A1 11 C0 00 83 81 7E 7E 08 00 3C 00 00 83 A2 07 F1 FF F9 FF 04 00 21 03 17 1F 29 F9 00 00 00 00 00 08 00 00 00 00 80 00 00 00 80 00 00 00 00 80 00 00 00 80 00 00 00 00 80 00 00 00 80 00 00 00 00 80 00 00 00 80 00 00 00 00 00

Structure HID transaction (portion)

Input and output reports specify control data and feature reports specify configuration data.

Data Format
byte index	bit 7	bit 3	bit 1
[0]	transaction type: 0x04: GET REPORT 0x05: SET REPORT 0x0A: DATA	parameters: 0x00: 0x01: 0x02:	report type: 0x01: INPUT 0x02: OUTPUT 0x03: FEATURE
[1]	protocol code
[2]	-
[3-end]	report content (e.g. buttons for report type input , see data structure)

HID INPUT reports

Input controls are sources of data relevant to an application, for example, X and Y data (e.g.: axes stick) or buttons obtained from a pointing device.

Protocol code:

0x01

This report is sent until the GET REPORT FEATURE 0x02 is received.

0xa1, 0x01, 0x7d, 0x7d, 0x80, 0x7e, 0x08, 0x00, 0x00, 0x00, 0x00
            ^Left Stick X ...       ^D-PAD

0x11

This report is sent once the GET REPORT FEATURE 0x02 is received. See example

HID OUTPUT reports

Output controls are a sink for application data, for example, an LED (or sound or rumbles) that indicates the state of a device.

Protocol code:

0x11

0x14

Speculation: contains sound.

Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

   0000   0f 01 42 00 a2 14 40 a0 f4 69 02 9c 75 19 24 00  [email protected].$.
   0010   00 00 00 00 00 00 00 76 db 6d bb 6d b6 dd b6 db  .......v.m.m....
   0020   6e db 6d b7 6d b6 db b6 db 6d db 6d b6 ed b6 db  n.m.m....m.m....
   0030   76 db 6d bb 6d b6 dd b6 db 6e db 6d b7 6d b6 db  v.m.m....n.m.m..
   0040   b6 db 6d db 6d b6 ed b6 db 76 db 6d bb 6d b6 dd  ..m.m....v.m.m..
   0050   b6 db 6e db 6d b7 6d b6 db b6 db 6d db 6d b6 ed  ..n.m.m....m.m..
   0060   b6 db 76 db 6d bb 6d b6 dd b6 db 6e db 6d b7 6d  ..v.m.m....n.m.m
   0070   b6 db b6 db 6d db 6d b6 ed b6 db 9c 75 19 24 00  ....m.m.....u.$.
   0080   00 00 00 00 00 00 00 76 db 6d bb 6d b6 dd b6 db  .......v.m.m....
   0090   6e db 6d b7 6d b6 db b6 db 6d db 6d b6 ed b6 db  n.m.m....m.m....
   00a0   76 db 6d bb 6d b6 dd b6 db 6e db 6d b7 6d b6 db  v.m.m....n.m.m..
   00b0   b6 db 6d db 6d b6 ed b6 db 76 db 6d bb 6d b6 dd  ..m.m....v.m.m..
   00c0   b6 db 6e db 6d b7 6d b6 db b6 db 6d db 6d b6 ed  ..n.m.m....m.m..
   00d0   b6 db 76 db 6d bb 6d b6 dd b6 db 6e db 6d b7 6d  ..v.m.m....n.m.m
   00e0   b6 db b6 db 6d db 6d b6 ed b6 db 00 00 00 00 00  ....m.m.........
   00f0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
   0100   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 9f  ................
   0110   42 86 54                                         B.T

0x15

Speculation: contains rumbles, LED color and sound.

Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

   0000   4f 01 42 00 a2 15 c0 a0 f3 04 00 00 00 00 00 ff  O.B.............
   0010   00 00 00 00 00 00 00 00 00 00 49 49 00 4f 85 00  ..........II.O..
   0020   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
   0030   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
   0040   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
   0050   00 00 00 f6 69 02 9c 75 19 24 00 00 00 00 00 00  ....i..u.$......
   0060   00 00 76 db 6d bb 6d b6 dd b6 db 6e db 6d b7 6d  ..v.m.m....n.m.m
   0070   b6 db b6 db 6d db 6d b6 ed b6 db 76 db 6d bb 6d  ....m.m....v.m.m
   0080   b6 dd b6 db 6e db 6d b7 6d b6 db b6 db 6d db 6d  ....n.m.m....m.m
   0090   b6 ed b6 db 76 db 6d bb 6d b6 dd b6 db 6e db 6d  ....v.m.m....n.m
   00a0   b7 6d b6 db b6 db 6d db 6d b6 ed b6 db 76 db 6d  .m....m.m....v.m
   00b0   bb 6d b6 dd b6 db 6e db 6d b7 6d b6 db b6 db 6d  .m....n.m.m....m
   00c0   db 6d b6 ed b6 db 9c 75 19 24 00 00 00 00 00 00  .m.....u.$......
   00d0   00 00 76 db 6d bb 6d b6 dd b6 db 6e db 6d b7 6d  ..v.m.m....n.m.m
   00e0   b6 db b6 db 6d db 6d b6 ed b6 db 76 db 6d bb 6d  ....m.m....v.m.m
   00f0   b6 dd b6 db 6e db 6d b7 6d b6 db b6 db 6d db 6d  ....n.m.m....m.m
   0100   b6 ed b6 db 76 db 6d bb 6d b6 dd b6 db 6e db 6d  ....v.m.m....n.m
   0110   b7 6d b6 db b6 db 6d db 6d b6 ed b6 db 76 db 6d  .m....m.m....v.m
   0120   bb 6d b6 dd b6 db 6e db 6d b7 6d b6 db b6 db 6d  .m....n.m.m....m
   0130   db 6d b6 ed b6 db 00 00 00 00 00 00 00 00 00 00  .m..............
   0140   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 b5  ................
   0150   98 a9 0f                                         ...

0x4F01: length (335)
0x4200: CID (42)
0xA2: DATA OUTPUT
0x15: Protocol Code
0xC0A0F30400: Unknown
0x00: Rumble right
0x00: Rumble left
0x00: LED (Red)
0x00: LED (Green)
0xFF: LED (Blue)

... 0xB598A90F: Check (CRC-32 from offset 0x04 to 0x14E)

0x17

0x18

0x19

HID features reports

A user-mode application can obtain (get) and set feature information by using this report designation.

GET FEATURE

0x02

0x04

0x06

0xA3

0xF1

02 15 20 08 00 04 00 41 00 4b f1 40 00

0xF2

SET FEATURE

0x03

0xF0

[1] The Audio/Video Remote Control Profile (AVRCP) specification v1.3 and later require that 0x110E also be included in the ServiceClassIDList before 0x110F for backwards compatibility

[2] See Device Descriptor

[3] A list of language bases that contains a language identifier according to ISO 639:1 , a character encoding identifier and a base attribute ID (0x0100) for the languages used in the service record.

[1]

[2]

[3]

DS4-BT

Bluetooth

UART HCI

Maximum theoretical update frequency per second (Minimum theoretical latency)

Overlapping channels BT/WiFi

Bluetooth Adressing

Class of Device/Service (CoD)

Service Discovery Protocol (SDP)

PDU

Data Element

PS4

Request

Response

DS4

Response

Notes:

HID Report header & footer

Examples

Structure HID transaction (portion)

HID INPUT reports

0x01

0x11

HID OUTPUT reports

0x11

0x14

0x15

0x17

0x18

0x19

HID features reports

GET FEATURE

0x02

0x04

0x06

0xA3

0xF1

0xF2

SET FEATURE

0x03

0xF0

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