Laird BTM410, User Manual

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BTM410/411
Bluetooth
®
AT Data Module
12 www.lairdtech.com Laird Technologies
AT COMMAND SET
REFERENCE
BTM - AT Command Set
This section describes the AT Command Set for a BTM module. This section is structured in functional
groups of AT commands, related to module configuration, Bluetooth profiles, hardware units and
miscellaneous purposes.
Assumptions
1. All commands are terminated by the carriage return character 0x0D, which is represented
by the string <cr> in descriptions below this cannot be changed.
2. All responses from the BTM device have carriage return and linefeed characters preceding and
appending the response. These dual character sequences have the values 0x0D and 0x0A
respectively and shall be represented by the string <cr,lf>
3. All Bluetooth addresses are represented by a fixed 12 digit hexadecimal string, case insensitive.
4. All Bluetooth Device Class codes are represented by a fixed 6 digit hexadecimal string, case
insensitive.
5. All profile specific commands are identified by the prefix shown in Table 3-6.
Table 3-6: AT command prefix for profiles
Profile Term AT-Command Prefix
Serial Port Profile SPP AT+SP…
Command Syntax
The following syntax is employed throughout this document to describe optional or mandatory
parameters for AT commands.
<bd_addr> A 12 character Bluetooth address consisting of ASCII characters ‘0’ to ‘9’,
‘A’ to ‘F’ and ‘a’ to ‘f’.
<devclass> A 6 character Bluetooth device class consisting of ASCII characters ‘0’ to ‘9’,
‘A’ to ‘F’ and ‘a’ to ‘f’.
N A positive integer value.
M An integer value which could be positive or negative, which can be entered
as a decimal value or in hexadecimal if preceded by the ‘$’ character. E.g.
the value 1234 can also be entered as $4D2
<string> A string delimited by double quotes. E.g. “Hello World”. The “ character
MUST be supplied as delimiters.
<uuid> A 4 character UUID number consisting of ASCII characters ‘0’ to ‘9’, ‘A’ to
‘F’ and ‘a’ to ‘f’.