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