User Manual
第
11
页 共
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HLK-B35
at+[command]=[value],[value],[value]......
All commands start with "at" and end with "\r\n". If the command is not sent in this format, the
module will not proceed.
It does not return any data; after the effective instruction is recognized, the module will return
the corresponding data or perform the corresponding operation, and
Return OK; invalid command module will directly return ERR. The instruction types are shown
in the following table:
3.1. Basic AT commands
3.1.1.
Test response：at
Type
Grammar
Return and description
Execute
instructions
at
OK
Note: The module is in AT command mode, and the
baud rate is correct
When receiving ERROR, it indicates that the module
is in AT mode, but the command is invalid
When no data is received, it indicates that the
module is in transparent transmission mode or
working abnormally
The module is in transparent transmission mode by
default
3.1.2.
Query software version number：at+ver=?
Type
Grammar
Return and description
Query
instruction
at+ver=?
HLK-B35(V1.00Nov 9 2020-07:38:59)
OK
Note: current version number and firmware date
Type
Form
Description
Query
instruction
at+<x>?
Get the parameter value or status currently
set by the module
Set
instruction
at+<x>=<
···
>
Set the relevant parameters of the module
Execute
instructions
at+<x>
Execute the function of unchanged internal
parameters of the module
