27
www.lairdtech.com
Laird Technologies
BTM520/521
Bluetooth
®
Multimedia Plus Module
CONFIGURING
THE BTM520/521
12. AT+BTIN<devclass> {Inquire}
As per AT+BTI but the response includes the device class code and friendly name for all inquiry
responses. Please refer to the ‘ERROR RESPONSE’ note in the description for AT+BTI<devclass>.
The friendly name strings are in UTF-8 format as per the Bluetooth specification.
Response: <cr,lf>12346789012,123456,”TDK SYSTEMS AT DONGLE 1”
<cr,lf>12345678914,123456, “TDK SYSTEMS RS232”
<cr,lf>OK<cr,lf>
Note: Many releases of firmware will return the product name as LAIRD, e.g.
Response: <cr,lf>12346789012,123456,”TDK SYSTEMS AT DONGLE 1”
<cr,lf>12345678914,123456, “TDK SYSTEMS RS232”
<cr,lf>OK<cr,lf>
We strongly recommend that any software implementation that uses this command should
check for LAIRD, EZURIO and TDK SYSTEMS to ensure backwards and forwards compatibility.
13. AT+BTK=<string> {Set Passkey}
This command is used to provide a passkey when PIN? 12345678 indications are received
asynchronously. If a pairing is not in progress then the pin is written to non-volatile memory
for future use. Specifying an empty string deletes the key from the non-volatile memory.
The string length must be in the range 0 to 8, otherwise an error will be returned.
Response: <cr,lf>OK<cr,lf>
14. AT+BTM {Delete Incoming Peer Address}
This command is used to delete the peer address previously stored using AT+BTR<bd_addr>.
Response: <cr,lf>OK<cr,lf>
15. AT+BTM? {Read Incoming Peer Address}
This command is used to display the peer address stored in non-volatile memory, used to put
the module in pure cable replacement mode.
Response: <cr,lf>12346789012
<cr,lf>OK<cr,lf>
If the location is empty the response is as follows.
Response: <cr,lf>00000000000
<cr,lf>OK<cr,lf>
16. AT+BTN=<string> {Set Friendly Name in Non-volatile Memory}
This sets the default friendly name of this device as seen by other devices. It will be stored
in non-volatile memory. Use AT+BTF to make the name visible to other devices. Use AT+BTN?
To read it back. An empty string (“”) will delete the string from non-volatile memory which will
force the default name to be used.
Response: <cr,lf>OK<cr,lf>
17. AT+BTN? {Read Friendly Name from Non-volatile Memory}
Read the default friendly name from non-volatile memory.
Response: <cr,lf>”My FriendlyName”<cr,lf>
<cr,lf>OK<cr,lf>
