User's Manual

Enhanced Class 1 Bluetooth v2.1 Module
User’s Guide
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www.lairdtech.com/wireless
78
CONN-GUIDE-BT740_v0.2
Where::
LL is the total length of the packet, and given only the EE..EE field is of variable length, the length
of the EE..EE field is calculated by subtracting 12 (decimal) from LL.
F0 is the channel number and is fixed
AAAAAAAAAAAA is a 6 byte field containing the Bluetooth address of the responding device.
CCCCCC is the device class code of the responding device
RR is the measured RSSI value for that response (8 bit signed integer)
EE..EE is a variable length field, with a maximum of 240 bytes, containing the enhanced inquiry
data which is formatted as multiple len/tag/data structures as specified in the Bluetooth
specification. Where both len and tag fields are single bytes and len does not include itself.
Any data passed from the baseband must match the format defined in the Bluetooth Specification Version
2.1 + EDR [1], vol3, Part C – Generic Access Profile, 8 Extended Inquiry Response Data Format (page
1305 in the *.pdf file).
A typical message sequence is as follows:
Figure 8-6: Typical message sequence
8.14.3 Set Discoverable Mode
This command enables/disables discoverable mode.
Command Packet
Offset
Field
Value
Comments
0
LENGTH
5
Fixed
1
CHANNEL
0
Fixed
2
COMMAND
[CMD_ DISCOVERABLE_MODE]