DVK-BTM411 Laird Technologies, DVK-BTM411 Datasheet - Page 31

• Manufacturer Part Number: DVK-BTM411
• Description: BLUETOOTH EVAL BOARD BTM411
• Manufacturer: Laird Technologies
• Type: Transceiverr

Specifications of DVK-BTM411

• Frequency: 2.4GHz
• Wireless Frequency: 2.402 GHz to 2.48 GHz
• Interface Type: UART
• Data Rate: 2.1 Mbps
• Operating Voltage: 3 V to 3.3 V
• Antenna: Multilayer Ceramic Integrated
• Operating Temperature Range: - 30 C to + 70 C
• Output Power: 4 dBm
• Technology/ Type: Development Kit
• For Use With/related Products: BTM411
• 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-BTM411

BTM410/411
Bluetooth
AT COMMAND SET
REFERENCE
31 www.lairdtech.com
®
AT Data Module
2.2
2.3
Figure 3.4: SPP example Device A - initiate connection, receiving data, command mode, disconnect
ATA {Accept Incoming SPP Connection Request}
Accept an incoming connection, which is indicated by the unsolicited string <cr,lf>RING
123456789012<cr,lf> every second. 123456789012 is the Bluetooth address of the
connecting device.
Response: <cr,lf>CONNECT 123456789012,1101,<<cr,lf>
AT+SPD<bd_addr>
Initiate an SPP connection to device with Bluetooth address <bd_addr> and SPP profile.
The timeout is specified by S register 505.
For backward compatibility, the following command fulfils the same purpose: ATD<bd_addr>.
Response: <cr,lf>CONNECT 123456789012,1101,><cr,lf>
Or <cr,lf>NO CARRIER<cr,lf>
Due to a known issue in the Bluetooth RFCOMM stack, it is not possible to make more than
65525 outgoing connections in a single power up session. Therefore if that number is exceeded,
then the connection attempt will fail with the following response:-
Response: <cr,lf>CALL LIMIT
Or <cr,lf>NO CARRIER<cr,lf>
In that case, issuing an ATZ to reset the device will reset the count to 0 and more connections
are possible.
Figure 3.5: SPP example Device B - incoming connection, receiving data, disconnection
{Make Outgoing SPP Connection}
Laird Technologies