DVK-BTM521 Laird Technologies, DVK-BTM521 Datasheet - Page 66

• Manufacturer Part Number: DVK-BTM521
• Description: BT MM DEV KIT
• Manufacturer: Laird Technologies
• Type: Transceiver, Bluetoothr

Specifications of DVK-BTM521

• Frequency: 2.4GHz
• Interface Type: RS-232
• Processor Series: BTM521
• Silicon Manufacturer: Laird Technologies
• Kit Application Type: Communication & Networking
• Application Sub Type: Bluetooth
• Kit Contents: Development Board & Software Tools
• Features: Supports CSR
• Rohs Compliant: Yes
• For Use With/related Products: BTM521
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: DVK-BTM521

BTM520/521
Bluetooth
AT COMMAND SET
REFERENCE
66 www.lairdtech.com
®
Multimedia Plus Module
7.1.15 “+CIEV” Indicators Received from AG (#2)
7.1.16 Hands-Free Status
7.1.17 Hands-Free Asynchronous Messages
“+CIEV” Audio
Gateway Indicator
Service
Call
Call Setup
Call held
Signal
Roam
Battery Charge
HFI”<indicator_string>”,<val>
HFI<indicator_id>,<val>
Inform the HF-host about a “+CIEV” indicator message received from the connected audio
gateway. S-Register 333 enables verbose mode for HFI indicators. Possible indicators are
listed in Table 3.29.
ATI65
Returns the status of the Hands-free (HFP) instance:
0 = not connected
1 = SLC connected
2 = Audio connected
3 = In call, SLC connected
4 = In call, audio connected
5 = In call setup (incoming/dialling/alerting), SLC connected
6 = In call setup (incoming/dialling/alerting), audio connected
CONNECT <bd_addr
A Service level connection to headset has been established and initialized.
<bd_addr
<uuid
<dir>
HF”RING”
HF has received a “RING” indication from the connected audio gateway. HF is expected to
respond with “ATA” (answer, see “AT+HFCA”) or “AT+CHUP” (see “AT+HFCH”).
HF”ERROR”
HF has received “ERROR” from the connected audio gateway. This can be due to a request
for memory dialling with invalid memory location (AT+HFC>”mmm”) or due to a request to
redial the last number (AT+HFDL) but there is no last number available in the AG.
HF”AU1”
Audio connection (SCO) has been established (= “audio on”).
HF”AU0”
Audio connection (SCO) has been released (= “audio off”).
HF”CLIP,OK”
HFG has replied with OK to reception of “AT+CLIP=1” or “AT+CLIP=0”.
hex
>
hex
>
Table 3.29: +CIEV indicators in HFI message
HFI indicator_string
(S333=1)
“service”
“call”
“callsetup”
“callheld”
“signal”
“roam”
“battchg”
: Bluetooth address of headset device
: “111E” if it is an incoming connection
: “<”/”>”/”I”/”O”’ optionally indicates the direction (incoming/outgoing),
“111F” if it is an outgoing connection.
please refer to S331 and section 6, page 92
hex
>,<uuid
(S333=0)
hex
>[,<dir>]
(S333=1, default)
HFI indicator_id
(S333=0)
1
2
3
4
5
6
7
Section in HFP spec. [5]
4.4
All call related sections
4.5
4.6
4.7
Laird Technologies