DVK-BTM521 Laird Technologies, DVK-BTM521 Datasheet - Page 39

• 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
39 www.lairdtech.com
®
Multimedia Plus Module
Phase
Preparation
Preparation
3.2 A2DP Example 2
This section gives an example of an A2DP connection between a Laird Technologies BTM5xx device
(A) as Audio Sink (wireless speaker/ wireless headphones) and another Laird Technologies BTM5xx
device (B) as Audio source.
Both BTM5xx devices are assumed to be connected via UART to a terminal program, e.g., Ezurio
Terminal on a PC. The required instructions along with the sequence of AT commands are listed
in Table 3.14. Figure 3.12 to Figure 3.15 show appropriate screenshots.
Figure 3.11: A2DP example 1: New Bluetooth Audio Device in the Device Manager
Dev.
ext.
audio
equipm.
A
AT Command
AT&F*
ATS515=$040400
ATS512=4
AT&W
ATZ
ATI4
Comment
1.) Connect an audio source (e.g. MP3 player) to the stereo
audio input (line in) of Device B
2.) Connect a headphone or a speaker to the stereo audio
output (line out) of device A
Restore factory default settings
A2DP profile is enabled per default in S102
Audio Sink role is enabled per default in S300
Set A2DP device class (Sink)
Make device connectable and discoverable (permanent setting)
Store settings
Reset
Query Bluetooth device address of Dev. A <BdAddr_DevA>
Laird Technologies