User's Manual

Enhanced Class 1 Bluetooth v2.1 Module
User’s Guide
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49
CONN-GUIDE-BT740_v0.2
RegNo
Min
Max
Category
Description
an 8 bit number on the terminal program.
651
-1
8
GPIO
-1 means no GPIO pin allocation.
See Note 1 and 3 below.
Requires firmware build 185 or newer.
652
-1
8
GPIO
-1 means no GPIO pin allocation.
See Note 1 and 3 below.
Requires firmware build 185 or newer.
653
-1
8
GPIO
-1 means no GPIO pin allocation.
See Note 1 and 3 below.
Requires firmware build 185 or newer.
654
-1
8
GPIO
-1 means no GPIO pin allocation.
See Note 1 and 3 below.
Requires firmware build 185 or newer.
661
-1
8
GPIO
-1 means no GPIO pin allocation.
See Note 2 and 3 below.
Requires firmware build 185 or newer.
662
-1
8
GPIO
-1 means no GPIO pin allocation.
See Note 2 and 3 below.
Requires firmware build 185 or newer.
663
-1
8
GPIO
-1 means no GPIO pin allocation.
See Note 2 and 3 below.
Requires firmware build 185 or newer.
664
-1
8
GPIO
-1 means no GPIO pin allocation.
See Note 2 and 3 below.
Requires firmware build 185 or newer.
717
2
15
GAP
Maximum time to wait for a remote friendly name to read
(AT+BTI command).
All these S Registers, unless specifically mentioned, become effective after a power cycle or reset.
Note 1: S Reg 651 to 654 take a GPIO pin number in the range 1 to 8 inclusive (or as per the full
range for the specific module) which maps from the RTR, RTC,DV,IC bits in the RFCOMM
Modem Control signal which exchanges for serial port profile. When a fresh Modem Control
Sig message arrives from the peer, if the corresponding S register is NOT -1 and the specific
GPIO pin is configured as an output (using S Reg 50 to 65 inclusive), then the state of the bit
outputs to that pin.
Note 2: S Reg 661 to 664 take a GPIO pin number in the range 1 to 8 inclusive (or as per the full
range for the specific module) which maps to the RTR, RTC,DV,IC bits in the RFCOMM
Modem Control signal which exchanges for serial port profile. If a GPIO pin specifies in one
of these S Registers and it changes state AND there is an SPP connection, then the state of
that input pin copies into an RFCOMM modem control message and sent to the peer.