DVK-BTM411 Laird Technologies, DVK-BTM411 Datasheet - Page 31
![BLUETOOTH EVAL BOARD BTM411](/photos/28/97/289759/dvk_btm411_sml.jpg)
DVK-BTM411
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DVK-BTM411-02
Manufacturer:
LAIRD
Quantity:
2
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