DVK-BTM411 Laird Technologies, DVK-BTM411 Datasheet - Page 15

• 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
15 www.lairdtech.com
®
AT Data Module
AT Commands for S Registers
As with modems, the Bluetooth module employs a concept of registers which are used to store parameters,
such as escape sequence character, inquiry delay time etc.
For a list of general S registers please refer to page 17 and Table 4.1.
S registers associated with a particular profile or specific functions, are described in the appropriate profile
section of this document.
The following AT commands allow the manipulation of S registers.
14. AT+BTV<bd_addr>,<uuid> {SDP Query for Service }
15. ATIn {Information}
1. ATSn=m
2. ATSn?
This command is used to interrogate the SDP database of the peer device <bd_addr> for the service
<uuid>. It results in an ACL connection and then an SDP transaction.
If the <uuid> service is present then
Response: <cr,lf>0
<cr,lf>OK<cr,lf>
If the <uuid> service is not present then
Response: <cr,lf>1
<cr,lf>OK<cr,lf>
If the device < bd_addr > cannot be reached, or is in non-connectable mode then
Response: <cr,lf>2
<cr,lf>OK<cr,lf>
If the SDP database is corrupt or invalid then
Response: <cr,lf>3
<cr,lf>OK<cr,lf>
If the device is not in idle mode then
Response: <cr,lf>4
<cr,lf>OK<cr,lf>
and in this case, the command AT+BTX may put the device into the correct idle mode.
This will return the information about the Laird Technologies device and its status. Please refer to
Table 4.2 (Appendix) for a complete list of supported ATIn parameters.
For recognized values of n:
Response: <cr,lf>As Appropriate<cr,lf>OK<cr,lf>
For unrecognized values of n.
Response: <cr,lf>Laird Technologies Inc, UK, (c)2009<cr,lf>
The value part ‘m’ can be entered as decimal or hexadecimal. A hexadecimal value is specified via a ‘$’
leading character. For example $1234 is a hexadecimal number.
When S register values are changed, the changes are not stored in non-volatile memory UNTIL the
AT&W command is used. Note that AT&W does not affect S registers 520 to 525 or 1000 to 1010
as they are updated in non-volatile memory when the command is received.
This will return the current value of register n.
For recognized values of n
Response: <cr,lf>As Appropriate<cr,lf>OK<cr,lf>
For unrecognized values of n
Response: <cr,lf>ERROR nn<cr,lf>
{Set S Register}
{Read S Register Value}
Laird Technologies