User's Manual

Class 1 Bluetooth v2.0 Module
User’s Guide
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48
CONN-GUIDE-BT730_v0.9
6.3.57 AT+BTT?{List Trusted Device}
This command is used to list the contents of the trusted device database. The link key is not displayed so
the response is as shown below. If the list is empty then just the OK response is sent otherwise an OK is
used to terminate the list. Use the command ATI6 to read the maximum size of the trusted device
database.
Response: <cr,lf>12346789012
<cr,lf>12345678913
<cr,lf>12345678914
<cr,lf>OK<cr,lf>
6.3.58 AT+BTV<U><Y><bd_addr>,<uuid>{SDP Query for Service }
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 a 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.