User's Manual

Enhanced Class 1 Bluetooth v2.1 Module
User’s Guide
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35
CONN-GUIDE-BT740_v0.2
6 S REGISTERS
All S registers are accessible when operating in AT protocol mode, but in MP protocol mode the only
visible S Registers are listed as ‘Standard’ and ‘Special’.
‘Standard’ and ‘AT’ S Registers share the same numbers in some cases. For this reason, the Standard
and Special registers access from AT mode by offsetting 9000. For example, the standard S register 3 for
profiles is read by using the command ATS9003? and set using ATS9003=n.
6.1 Standard S Registers
This section details all the standard configuration ‘S’ registers. Minimum and Maximum values are given
in decimal, unless the value is prefixed by 0x, in that case the value is in hexadecimal.
Table 6-1: Standard configuration S registers
RegNo
Dec
(Hex)
Min
Max
Category
Description
3 (03)
0
3
Profiles
Server Profile record Mask
Bit 0 = SPP
Bit 1 = HID
Bit 2 = HDP
If HID enables, see S Reg 39 for further configuration
options in terms of device or host implementation.
If HDP enables, see S Reg 70 for further configuration
options in terms of Agent or Manager services.
Note: Depending on the firmware build, some profiles are
not available; in that case setting or clearing the
appropriate bit in this register has no effect as that
bit is ignored.
4 (04)
0
1
GAP
Default Connectable Mode on power up/reset
0: Disable
1: Enable
5 (05)
0
2
GAP
Default Discoverable Mode on power up/reset
0 : Disable
1 : Enable General Discoverable mode (uses GIAC =
0x9E8B33)
2 : Enable Limited Discoverable mode (used LIAC =
0x9E8B00))
6 (06)
12
15
GAP
Security
IO Capability
Default Security Mode on power up/reset
12 = SSP + IO_CAP_NO_INPUT_NO_OUTPUT
13 = SSP + IO_CAP_DISPLAY_YES_NO
14 = SSP + IO_CAP_KEYBOARD_ONLY
15 = SSP + IO_CAP_DISPLAY_ONLY
7 (07)
12
2560
GAP
Inquiry Scan Interval in units of msec