At Commands - Ebyte E78-868LN22S Manual

Chengdu Ebyte Electronic Technology Co., Ltd.

7 AT Commands

a) Instruction format:
AT+ <CMD>[op][ para1, para2, para3,...]<CR><LF>
area
AT+
CMD
Op
para-1,para-2,...para-n
<CR><LF>
The response message format is <\r\n>[+CMD:][para-1,para-2,...para-n]<\r\n> or <\r\n><STATUS><\r\ n>, or
both.
area
\r\n
+CMD
para-1,para-2,...para-n
STATUS
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illustrate
Command message prefix
command string
Command operator. Can be the following:
"=": Indicates parameter settings.
"?": Indicates the current value of the query parameter.
"": Indicates executing the command.
"=?": Indicates the parameters of the query setting command.
Indicates the set parameter value, or specifies the parameter to
be queried.
Carriage return and line feed, ASCII 0x0D 0x0A
illustrate
Newline character, ASCII code is 0x0A
The corresponding command string
the corresponding parameter string
Command execution status. Can be the following:
"OK": Indicates that the command is executed successfully.
"ERROR": Indicates that the command execution failed.
"+CME ERROR:<err>": Indicates that the command
execution failed and the corresponding
error code.
E78-868LN22S User Manual
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