BthReadRemoteExtendedFeatures (Compact 2013)
3/26/2014
This function retrieves the extended Link Manager Protocol (LMP) feature mask for the specified device and page.
Syntax
DWORD BthReadRemoteExtendedFeatures(
__in const BT_ADDR *pba,
__in BYTE PageNumber,
__out BYTE LMPFeatures[8]);
Parameters
- pba
[in] Points to the address of the device.
- PageNumber
[in] The page number from 0x01 through 0xFF. Set to 0x00 to retrieve the standard LMP feature mask.
LMP Features
[out] The Link Manager Protocol feature mask.The following table lists the features and their corresponding bits in the mask. For each feature a single bit is specified that is set to 1 if the feature is supported, and set to 0 otherwise. The single exception is the flow control lag, which is coded as a 3-bit field with the least significant bit in byte 2 bit 4, and the most significant bit in byte 2 bit 6.
The following table shows the page 0 mask.
No.
Supported feature
Byte
Bit
0
3 slot packets
0
0
1
5 slot packets
0
1
2
Encryption
0
2
3
Slot offset
0
3
4
Timing accuracy
0
4
5
Role switch
0
5
6
Hold mode
0
6
7
Sniff mode
0
7
8
Park state
1
0
9
Power control requests
1
1
10
Channel quality driven data rate (CQDDR)
1
2
11
SCO link
1
3
12
HV2 packets
1
4
13
HV3 packets
1
5
14
μ-law log synchronous data
1
6
15
A-law log synchronous data
1
7
16
CVSD synchronous data
2
0
17
Paging parameter negotiation
2
1
18
Power control
2
2
19
Transparent synchronous data
2
3
20
Flow control lag (least significant bit)
2
4
21
Flow control lag (middle bit)
2
5
22
Flow control lag (most significant bit)
2
6
23
Broadcast Encryption
2
7
24
Reserved
3
0
25
Enhanced Data Rate ACL 2 Mbps mode
3
1
26
Enhanced Data Rate ACL 3 Mbps mode
3
2
27
Enhanced inquiry scan
3
3
28
Interlaced inquiry scan
3
4
29
Interlaced page scan
3
5
30
RSSI with inquiry results
3
6
31
Extended SCO link (EV3 packets)
3
7
32
EV4 packets
4
0
33
EV5 packets
4
1
34
Reserved
4
2
35
AFH capable subordinate device
4
3
36
AFH classification subordinate device
4
4
37
Reserved
4
5
38
Reserved
4
6
39
3-slot Enhanced Data Rate ACL packets
4
7
40
5-slot Enhanced Data Rate ACL packets
5
0
41
Sniff subrating
5
1
42
Pause encryption
5
2
43
AFH capable master device
5
3
44
AFH classification master device
5
4
45
Enhanced Data Rate eSCO 2 Mbps mode
5
5
46
Enhanced Data Rate eSCO 3 Mbps mode
5
6
47
3-slot Enhanced Data Rate eSCO packets
5
7
48
Extended Inquiry Response
6
0
51
Secure Simple Pairing
6
3
52
Encapsulated PDU
6
4
53
Erroneous Data Reporting
6
5
54
Non-flushable Packet Boundary Flag
6
6
56
Link Supervision Timeout Changed Event
7
0
57
Inquiry Response TX Power Level
7
1
63
Extended features
7
7
The following table shows the page 1 mask.
No.
Supported feature
Byte
Bit
64
Secure Simple Pairing (Host Support)
0
0
Return Value
The following table shows the possible return values.
Value |
Description |
|---|---|
ERROR_SUCCESS |
Success. |
ERROR_SERVICE_NOT_ACTIVE |
The Bluetooth stack is not present. |
Requirements
Header |
bt_api.h |
Library |
Btdrt.lib |