DVK-BTM521 Laird Technologies, DVK-BTM521 Datasheet - Page 49

• 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
49 www.lairdtech.com
®
Multimedia Plus Module
5.2 AVRCP - Control (CT) and Target (TG)
5.3 AVRCP - Control (CT)
This section describes AT Commands an S registers which are common to BTM5xx AVRCP
Controller role and AVRCP Target role.
5.2.1 Initiate AVRCP Connection
5.2.2 Release AVRCP Control Connection
This section describes AT Commands an S registers when BTM5xx is configured as an AVRCP
Controller (S301=1).
5.3.1 Send UNIT INFO Request
5.3.2 Send SUBUNIT INFO Request (Incomplete*)
AT+AVD<bd_addr
Initiate AVRCP control connection to Bluetooth address <bd_addr
be configured as AVRCP Control by S register 301 = 1. Furthermore, a category must be
selected in S register 302.
Response:
Or:
Or:
Or:
After an AVRCP connection has been established, the module remains in AT command
mode. S Register 531 is ignored for AVRCP connections.
AT+AVH
Release AVRCP control connection.
Response
AT+AVU
Send a Unit Info request to a connected AVRCP target.
Response immediately:
On command completion:
<cr,lf>AVUR <n>,<unit_id
<n> = status
If <n> is greater than zero (unsuccessful outcome), <unit_type
will not be sent. Examples for unsuccessful response are:
<cr,lf>AVUR 1<cr,lf> or
<cr,lf>AVUR 4<cr,lf>
For unit_type see Table 3.21: AV/C Unit/Subunit Types.
AT+AVS<page
Send a Subunit Info request to a connected AVRCP target.
Response:
And:
<n> = status
<page
<pagedata
dec
<cr,lf>NO CARRIER 110E<cr,lf>
<cr,lf>ERROR 47<cr,lf>
<cr,lf>ERROR 48<cr,lf>
1 – fail
4 – timeout
1 – fail
4 – timeout
>
<cr,lf>AVSR <n>,<page
hex
dec
>:
dec
:
: 0 – success
dec
>
<cr,lf>CONNECT 123456789012,110E,><cr,lf>
<cr,lf >NO CARRIER 110E<cr,lf>
<cr,lf>OK<cr,lf> (immediately)
0 – success
:
1st word of requested page
hex
>
hex
<cr,lf>OK<cr,lf>
requested page [0..31]
>,<unit_type
dec
>,<pagedata
hex
>,<company_id
hex
> <cr,lf> (after command completion)
hex
><cr,lf>
hex
> and <company_id
hex
>. The module must
Laird Technologies
hex
>