Ebyte E52-400/900NW22S, Руководство пользователя

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Chengdu Ebyte Electronic Technology Co.,Ltd..
E52-400/900NW22S User Manual
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Copyright ©2012–2023, Chengdu Ebyte Electronic Technology Co.,Ltd.
10
VI. Command Introduction
6.1 Introduction to AT commands

AT instructions are divided into three categories: command instructions, setting instructions and query instructions;

AT command uses 115200 bps baud rate by default, without sending new lines;

Different AT commands require different numbers of input parameters. Different parameters need to be separated by
",". The input parameters are uniformly decimal values. You need to read the instruction set carefully for details. If
the number of input parameters of the AT command is wrong, the serial port will Returns data similar to
"AT+DST_ADDR=CMD_ERR".

Some AT command parameters will be restricted. If the AT command input value is wrong, the serial port will return
data similar to "AT+DST_ADDR=CMD_VALUE_ERR";

If the parameter setting is successful, the serial port will return data similar to "AT+DST_ADDR=OK";

Data in non-AT command sets will be considered transparent data, and the module will initiate a data request, so
you should try to avoid sending data starting with "AT+";

After using the saved instructions, all parameters inside the current module will be saved. Most of the setting
instructions will be saved directly to Flash. Only some common setting instructions can be saved to Flash according
to the parameters.
6.2 Command instruction set

The command instruction has no suffix, and only requires "AT+RESET" to restart the module.
6.3 Query instruction set

The suffix of the query command is "=?". For example, the query module related information command
"AT+INFO=?", the module will return the main parameters of the module.
Command
Instruction
Function Description
AT+IAP Enter IAP upgrade mode
After returning AT+IAP=OK, the module immediately restarts
and enters the IAP upgrade mode. It remains powered on for
about 30 seconds and automatically exits the IAP upgrade mode.
AT+RESET Module restart
After returning AT+RESET=OK, the module will restart
immediately.
AT+DEFAULT
Restore module to factory
settings
After returning AT+DAFAULT=OK, the parameters will be
restored to factory values, and then restart immediately.