User's Manual

56
www.lairdtech.com
Laird Technologies
BTM510/511
Bluetooth
®
Multimedia Module
6.1.6 Headset summary
Task AT-Command / S Register Comment
Enable HSP-HS role S102 0x02 = HS role of HSP (bitmask), needs
subsequent “AT&W” and “atz” to
activate
Initiate ACL from headset AT+HSD<bd_addr
hex
> Responses:
successful: “CONNECT
123456789012,1112,>”
failed: “NO CARRIER”
prole disabled: “ERROR 59”
incorrect state: “ERROR 63”
Send “Button pressed” (HS) AT+HSB Sends “AT+CPKD=200” to the con-
nected gateway
Disconnect from HS AT+HSH / ATH1108 / ATH* For test purposes only, because discon-
nection initiated by HS other than send-
ing “AT+CKPD=200” to gateway is not
dened in HSP specication.
Enable “ATH” for HS S332 Enable HS disconnection “ATH1108”
and “ATH*”
0 = disabled (default)
1 = enable
Should only be enabled for test purpos-
es, because disconnection initiated by
HS other than sending “AT+CKPD=200”
to gateway is not dened in HSP speci-
cation.
Inquire HS status ATI63 0 = not connected
1 = ACL connected
2 = Audio connected
Table 3.26: Headset role (HSP) – Summary of S Registers and AT Commands
6.2 Audio gateway role (AG-HSP / HSG)
Audio gateway role (for HSP) is activated by setting ag 0x08 in S102 plus “AT&W” plus “atz“.
Figure 3.23 outlines a block diagram of an audio gateway with a BTM5xx in hosted operation mode.
Mobile
Termination
Host
Controller
Audio routing
control
local speaker,
local microphone
BTM5xx
[HSG] or
[HFG]
Audio Network
AT Command
Interface
Telephone control
(set of buttons / keypad / display)
Figure 3.23 Audio Gateway block diagram
AT COMMAND SET
REFERENCE