User's Manual

Enhanced Class 1 Bluetooth v2.1 Module
User’s Guide
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CONN-GUIDE-BT740_v0.2
5.3.34 Enable Connectable+Discoverable Mode
Command:
AT+BTP
Response:
<cr,lf>OK<cr,lf>
Or
<cr,lf>ERROR nn<cr,lf>
Description:
Enable page and inquiry scanning and wait for a connection from any device.
The page scan window and interval timing derives from S Reg 9009 and 9010.
The inquiry scan window and interval timing derives from S Reg 9007 and
9008.
5.3.35 Enable Discoverable Mode Only
Command:
AT+BTQ
Response:
<cr,lf>OK<cr,lf>
Or
<cr,lf>ERROR nn<cr,lf>
Description:
Set discoverable mode only by enabling inquiry scanning.
The inquiry scan window and interval timing derives from S Reg 9007 and 9008.
Use ATi21 and ATi22 to determine the discoverable and connectable modes at any
time.
5.3.36 List Trusted Device
Command:
AT+BTT?
Response:
<cr,lf>12346789012
<cr,lf>12345678913
<cr,lf>12345678914
<cr,lf>OK<cr,lf>
Or
<cr,lf>ERROR nn<cr,lf>
Description:
This command lists the contents of both the ‘rolling’ and the ‘persist’ trusted device
database. The link key does NOT display so the response is as shown above. If the
list is empty, only the OK response sends; otherwise an OK terminates the list. Use
the command ATI6 to read the maximum size of the trusted device database.
Note: All new successful pairings automatically store in the ‘rolling’ database. If
the database is full, then the oldest is deleted to make room for the new
one. To ensure a link key is never deleted, transfer it to the ‘persist’
database using the command AT+BTT<bd_addr> described in detail later.