Philips Semiconductors
UM_1SPP
BGB203 BT 2.0 Serial Port Profile Module User’s Guide
5.
General Command Syntax
All commands listed in this document must be preceded with the string “ AT ”. All
commands listed in this document end when a carriage return character (ASCII character
value 13 - hexadecimal 0x0D) is received. An entire command sequence will have the
following format:
<Prefix><Command><CR>
where,
<Prefix> is the case-insensitive string “ AT ” (without the quotation marks),
<Command> is a command listed in the command section of this document, and
<CR> is the carriage return character (ASCII character value 13 - hexadecimal
0x0D)
Once a command is received by the device it will be processed. Once a command is
processed, a response will be generated. A response will have the following format:
<CR><LF><Response><CR><LF>
where,
<CR> is the carriage return character (ASCII character value 13 - hexadecimal
0x0D),
<LF> is the line feed character (ASCII character 10 - hexadecimal 0x0A),
<Response> is the command specific response, or one of the following strings
(without the quotation marks):
“ OK ”
“ ERROR ”
<CR> is the carriage return character (ASCII character value 13 – hexadecimal
0x0D),
<LF> is the line feed character (ASCII character 10 - hexadecimal 0x0A)
If the command is an extended command, it will return each line of the result in the
following format:
<CR><LF><Command><Delimiter><Response Data><CR><LF>
where,
<CR> is the carriage return character (ASCII character value 13 - hexadecimal
0x0D),
<LF> is the line feed character (ASCII character 10 - hexadecimal 0x0A),
<Command> is the command itself (without the “ AT ” prefix)
<Delimiter> is the string “ : “(without the quotation marks). Note the single space
character in the above string.
<Response Data> is the command specific response data
<CR> is the carriage return character (ASCII character value 13 - hexadecimal
0x0D),
,
<LF> is the line feed character (ASCII character 10 - hexadecimal 0x0A),
? Koninklijke Philips Electronics N.V. 2005
All rights are reserved. Reproduction in whole or in part is prohibited without the prior
written consent of the copyright owner. The information presented in this document does
not form part of any quotation or contract, is believed to be accurate and reliable and may
be changed without notice. No liability will be accepted by the publisher for any
consequence of its use. Publication thereof does not convey nor imply any license under
patent- or other industrial or intellectual property rights.
Date of release:21 Dec 2005
Published in The Netherlands
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