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Serial Port Profile SPP, Hands-Free Profile HFP

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9.8.3 Serial Port Profile (SPP) A scenario would be using two devices, such as PCs or laptops, as virtual serial ports and then connecting the two devices via Bluetooth technology. The SPP defines two roles, Device A and Device B.  Device A - This is the device that takes initiative to form a connection to another device (initiator).  Device B - This is the device that waits for another device to take initiative to connect (acceptor). The applications on both sides are typically legacy applications, able and wanting to communicate over a serial cable (which in this case is emulated). But legacy applications cannot know about Bluetooth procedures for setting up emulated serial cables, which is why they need help from some sort of Bluetooth aware helper application on both sides. (These issues are not explicitly addressed in this profile; the major concern here is for Bluetooth interoperability.) Source: Bluetooth SIG, URL: http://www.bluetooth.com/Bluetooth/Technology/Works/SPP.htm 9.8.4 Hands-Free Profile (HFP) HFP describes how a gateway device can be used to place and receive calls for a hand-free device. The HFP defines two roles, that of an Audio Gateway (AG) and a Hands-Free unit (HF):  Audio Gateway (AG) - This is the device that is the gateway of the audio, both for input and output, typically a mobile phone.  Hands-Free Unit (HF) - This is the device acting as the Audio Gateway's remote audio input and output mechanism. It also provides some remote control means. Hands-Free control is the entity responsible for Hands-Free unit specific control signaling; this signaling is AT command based. Although not shown in the model to the left, it is assumed by this profile that Hands-Free Control has access to some lower layer procedures (for example, Synchronous Connection establishment). The audio port emulation layer shown in the figure to the left is the entity emulating the audio port on the Audio Gateway, and the audio driver is the driver software in the HandsFree unit. For the shaded protocols/entities in the figure to the left, the Serial Port Profile is used as the base standard. For these protocols, all mandatory requirements stated in the Serial Port Profile apply except in those cases where this specification explicitly states deviations. Source: Bluetooth SIG, URL: http://www.bluetooth.com/Bluetooth/Technology/Works/HFP.htm 171

Section	Page
1. INTRODUCTION	12
2. GETTING STARTED	14
3. IWRAP MODES	15
3.1 Command Mode	17
3.2 Data Mode	17
3.3 Multiplexing Mode	18
3.4 HFP mode	18
3.5 OPP mode	18
3.6 A2DP mode	18
3.7 AVRCP mode	18
4. TECHNICAL DETAILS	19
5. IWRAP COMMAND LISTING	21
5.1 Typographical Conventions	26
5.2 AT	27
5.2.1 Syntax	27
5.2.2 Examples	27
5.3 INQUIRY	28
5.3.1 Syntax	28
5.3.2 Examples	30
5.4 IC	32
5.4.1 Syntax	32
5.4.2 Examples	32
5.5 NAME	34
5.5.1 Syntax	34
5.5.2 Examples	34
5.6 PAIR	35
5.6.1 Syntax	35
5.6.2 Examples	35
5.7 AUTH	37
5.7.1 Syntax	37
5.7.2 Examples	37
5.8 CALL	39
5.8.1 Syntax	39
5.8.2 Examples	41
5.9 CLOSE	43
5.9.1 Syntax	43
5.9.2 Examples	43
5.10 LIST	44
5.10.1 Syntax	44
5.10.2 Examples	48
5.11 SELECT	49
5.11.1 Syntax	49
5.11.2 Examples	49
5.12 SDP	50
5.12.1 Syntax	50
5.12.2 Examples	50
5.13 SDP ADD	52
5.13.1 Syntax	52
5.13.2 Examples	52
5.14 IDENT	53
5.14.1 Syntax	53
5.14.2 Examples	53
5.15 L2CAP	54
5.15.1 Syntax	54
5.15.2 Examples	54
5.16 RFCOMM	55
5.16.1 Syntax	55
5.16.2 Examples	55
5.17 SCO ENABLE	56
5.17.1 Syntax	56
5.18 SCO OPEN	57
5.18.1 Syntax	57
5.18.2 Examples	58
5.19 CLOCK	59
5.19.1 Syntax	59
5.19.2 Examples	59
5.20 KILL	60
5.20.1 Syntax	60
5.21 BER	61
5.21.1 Syntax	61
5.21.2 Examples	61
5.22 RSSI	62
5.22.1 Syntax	62
5.22.2 Examples	62
5.23 TXPOWER	63
5.23.1 Syntax	63
5.23.2 Examples	63
5.24 PING	64
5.24.1 Syntax	64
5.24.2 Examples	64
5.25 ECHO	65
5.25.1 Syntax	65
5.25.2 Examples	65
5.26 SLEEP	66
5.26.1 Syntax	66
5.27 PIO	67
5.27.1 Syntax	67
5.27.2 Examples	68
5.28 VOLUME	69
5.28.1 Syntax	69
5.29 TEMP	70
5.29.1 Syntax	70
5.29.2 Examples	70
5.30 BATTERY	71
5.30.1 Syntax	71
5.30.2 Examples	71
5.31 BYPASSUART	72
5.31.1 Syntax	72
5.32 DEFRAG	73
5.32.1 Syntax	73
5.33 BCSP_ENABLE	74
5.33.1 Syntax	74
5.34 RESET	75
5.34.1 Syntax	75
5.35 BOOT	76
5.35.1 Syntax	76
5.35.2 Examples	76
5.36 TEST	77
5.36.1 Syntax	77
5.36.2 Examples	79
5.37 TESTMODE	80
5.37.1 Syntax	80
5.38 HELP	81
5.38.1 Syntax	81
5.38.2 Examples	81
5.39 INFO	82
5.39.1 Syntax	82
5.39.2 Examples	82
5.40 CONNECT	84
5.40.1 Syntax	84
5.40.2 Examples	84
6. SET	85
6.1.1 Syntax of SET Commands	85
6.1.2 Examples	86
6.2 SET BT BDADDR	87
6.2.1 Syntax	87
6.3 SET BT NAME	88
6.3.1 Syntax	88
6.4 SET BT CLASS	89
6.4.1 Syntax	89
6.5 SET BT AUTH	90
6.5.1 Syntax	90
6.6 SET BT LAP	92
6.6.1 Syntax	92
6.7 SET BT PAGEMODE	94
6.7.1 Syntax	94
6.8 SET BT PAIR	96
6.8.1 Syntax	96
6.9 SET BT ROLE	97
6.9.1 Syntax	97
6.10 SET BT SNIFF	99
6.10.1 Syntax	99
6.11 SET BT POWER	101
6.11.1 Syntax	101
6.11.2 Examples	102
6.12 SET BT IDENT	103
6.12.1 Syntax	103
6.12.2 Examples	104
6.13 SET CONTROL AUTOCALL	105
6.13.1 Syntax	105
6.13.2 Examples	107
6.14 SET CONTROL BAUD	108
6.14.1 Syntax	108
6.14.2 Examples	109
6.15 SET CONTROL CD	110
6.15.1 Syntax	110
6.16 SET CONTROL CONFIG	111
6.16.1 Syntax	111
6.16.2 Examples	113
6.17 SET CONTROL ECHO	114
6.17.1 Syntax	114
6.18 SET CONTROL ESCAPE	115
6.18.1 Syntax	115
6.18.2 Examples	116
6.19 SET CONTROL INIT	117
6.19.1 Syntax	117
6.19.2 Examples	117
6.20 SET CONTROL MUX	118
6.20.1 Syntax	118
6.20.2 Examples	118
6.20.3 Using Multiplexing Mode	119
6.21 SET CONTROL BIND	122
6.21.1 Syntax	122
6.21.2 Examples	123
6.22 SET CONTROL MSC	124
6.22.1 Syntax	124
6.23 SET CONTROL GAIN	126
6.23.1 Syntax	126
6.24 SET CONTROL VREGEN	127
6.24.1 Syntax	127
6.24.2 Examples	128
6.25 SET CONTROL MICBIAS	129
6.25.1 Syntax	129
6.26 SET CONTROL PCM	131
6.26.1 Syntax	131
6.27 SET PROFILE	132
6.27.1 Syntax	132
6.27.2 Examples	133
6.28 SET {link_id} ACTIVE	134
6.28.1 Syntax	134
6.28.2 Examples	134
6.29 SET {link_id} MASTER	135
6.29.1 Syntax	135
6.29.2 Examples	135
6.30 SET {link_id} SLAVE	136
6.30.1 Syntax	136
6.31 SET {link_id} SNIFF	137
6.31.1 Syntax	137
6.32 SET {link_id} MSC	138
6.32.1 Syntax	138
6.32.2 Examples	138
6.33 SET {link_id} SELECT	139
6.33.1 Syntax	139
7. IWRAP EVENTS	140
7.1 CONNECT	141
7.1.1 Syntax	141
7.2 INQUIRY_PARTIAL	142
7.2.1 Syntax	142
7.3 NO CARRIER	143
7.3.1 Syntax	143
7.4 READY	144
7.4.1 Syntax	144
7.5 NAME	145
7.5.1 Syntax	145
7.6 NAME ERROR	146
7.6.1 Syntax	146
7.7 PAIR	147
7.7.1 Syntax	147
7.8 RING	148
7.8.1 Syntax	148
7.9 SYNTAX ERROR	149
7.9.1 Syntax	149
7.10 AUTH	150
7.10.1 Syntax	150
7.11 CLOCK	151
7.11.1 Syntax	151
7.12 IDENT	152
7.12.1 Syntax	152
7.13 IDENT ERROR	153
7.13.1 Syntax	153
7.14 BATTERY	154
7.14.1 Syntax	154
7.15 PIO	155
7.15.1 Syntax	155
7.16 VOLUME	156
7.16.1 Syntax	156
8. IWRAP ERROR MESSAGES	157
8.1 HCI Errors	157
8.2 SDP Errors	160
8.3 RFCOMM Errors	162
9. GENERAL INFORMATION	164
9.1 Changing Parameters over RS232 with PSTool	164
9.2 Using BlueTest over RS232	165
9.3 Switching to HCI Firmware	166
9.4 Firmware Updates over SPI	167
9.5 Firmware Updates over UART	167
9.6 UART Hardware Flow Control	168
9.7 RS232 Connections Diagram	169
9.8 Supported Bluetooth Profiles Overview	170
9.8.1 RFCOMM with TS07.10	170
9.8.2 Service Discovery Protocol (SDP)	170
9.8.3 Serial Port Profile (SPP)	171
9.8.4 Hands-Free Profile (HFP)	171
9.8.5 Dial-up Networking Profile (DUN)	172
9.8.6 Object Push Profile (OPP)	172
9.8.7 Advanced Audio Distribution Profile	172
9.8.8 Audio Video Remote Control Profile	173
9.8.9 Human Interface Device Profile	173
9.9 Power Saving	174
9.10 Bluetooth profile UUIDs	175
10. KNOWN ISSUES	179
11. TROUBLESHOOTING	181
12. IWRAP USAGE EXAMPLES	182
12.1 Serial Port Profile – Slave mode	182
12.2 Serial Port Profile – Master mode	184
12.3 Dial-up Networking	185
12.4 OBEX Object Push Profile Server	186
12.5 Hands-Free Audio Gateway Connection to a Headset Device	188
12.6 Hands-Free connection to a Mobile Phone	192
12.7 iWRAP to iWRAP Serial Port Profile + SCO connection	195
12.8 Wireless IO Replacement	196
12.9 A2DP Sink	198
12.10 A2DP Source	199
12.11 AVRCP Connection	200
12.12 Human Interface Device (HID) Example	202
12.13 Over-the-Air Configuration	206
12.14 Bluetooth Networking with iWRAP and WRAP Access Server	207
13. SUPPORT	209
14. RELATED DOCUMENTATION	210

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171

9.8.3

Serial Port Profile (SPP)

A scenario would be using two devices, such as PCs or laptops, as virtual serial ports and

then connecting the two devices via Bluetooth technology.

The SPP defines two roles, Device A and Device B.



Device A – This is the device that takes initiative to form a connection to another

device (initiator).



Device B – This is the device that waits for another device to take initiative to

connect (acceptor).

The applications on both sides are typically legacy applications, able and wanting to

communicate over a serial cable (which in this case is emulated). But legacy applications

cannot know about Bluetooth procedures for setting up emulated serial cables, which is

why they need help from some sort of Bluetooth aware helper application on both sides.

(These issues are not explicitly addressed in this profile; the major concern here is for

Bluetooth interoperability.)

Source: Bluetooth SIG, URL:

http://www.bluetooth.com/Bluetooth/Technology/Works/SPP.htm

9.8.4

Hands-Free Profile (HFP)

HFP describes how a gateway device can be used to place and receive calls for a hand-free

device.

The HFP defines two roles, that of an Audio Gateway (AG) and a Hands-Free unit (HF):



Audio Gateway (AG) – This is the device that is the gateway of the audio, both for

input and output, typically a mobile phone.



Hands-Free Unit (HF) – This is the device acting as the Audio Gateway’s remote

audio input and output mechanism. It also provides some remote control means.

Hands-Free control is the entity responsible for Hands-Free unit specific control signaling;

this signaling is AT command based.

Although not shown in the model to the left, it is assumed by this profile that Hands-Free

Control has access to some lower layer procedures (for example, Synchronous Connection

establishment).

The audio port emulation layer shown in the figure to the left is the entity emulating the

audio port on the Audio Gateway, and the audio driver is the driver software in the Hands-

Free unit.

For the shaded protocols/entities in the figure to the left, the Serial Port Profile is used as

the base standard. For these protocols, all mandatory requirements stated in the Serial

Port Profile apply except in those cases where this specification explicitly states deviations.

Source: Bluetooth SIG, URL:

http://www.bluetooth.com/Bluetooth/Technology/Works/HFP.htm