HF-A11 Embedded WiFi Module User Manual
Shanghai High-Flying Electronics Technology Co., Ltd
www.hi-flying.com
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4.2. AT+ Instruction Set Overview
User can input AT+ Instruction through hyper terminal or other serial debug terminal, also can
program the AT+ Instruction to script. User can also input “AT+H” to list all AT+ Instruction and
description to start.
Figure 40. ”AT+H” Instruction for Help
4.2.1. Instruction Syntax Format
AT+Instruction protocol is based on the instruction of ASCII command style, the description of
syntax format as follow.
¾
Format Description
< >
: Means the parts must be included
[ ]
: Means the optional part
¾
Command Message
AT+<CMD>[op][para-1,para-2,para-3,para-4…]<CR>
AT+: Prefix of command message;
CMD: Command string;
[op]: Symbol of command operator,
“=” : The command requires parameters input;
“NULL”: Query the current command parameters setting;
[para-n]:
Parameters
input for setting if required;
<CR>
：
”Enter” Key, it’s 0x0a or 0x0d in ASCII;
Notes:
When input AT+Instruction, “AT+<CMD>” character will display capital letter automatic
and other
parts will not change as you input.
¾
Response Message
+<RSP>[op] [para-1,para-2,para-3,para-4…]<CR><LF><CR><LF>
+: Prefix of response message;
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