System AT Command Set
- AT: Test AT startup 
- AT+RST: Reset the module 
- AT+RESTORE: Restore factory default settings of the module. 
- AT+SYSSTORE: Set parameter storage mode 
AT: System AT Commands
Set Command
Command:
AT
Response:
OK
Explanation
- This is a test AT startup command, used to check if the device responds correctly. When this command is sent, the device should return OK, indicating the device is functioning properly. 
Example
AT
AT+RST: Reset the Module
Set Command
Command:
AT+RST
Response:
OK
Explanation
- This command is used to reset the device. After sending the AT+RST command, the device will reboot. 
Example
AT+RST
AT+RESTORE: Restore Factory Default Settings
Execute Command
Command:
AT+RESTORE
Response:
OK
Explanation
The execution of this command will restore all parameters saved in flash to factory default settings of the module.
The device will be restarted when this command is executed.
AT+SYSSTORE: Query/Set Parameter Store Mode
Query Command
Command:
AT+SYSSTORE?
Response:
+SYSSTORE:<store_mode>
OK
Set Command
Response:
AT+SYSSTORE=<store_mode>
Response:
OK
Parameter
- <store_mode>:Parameter storage mode - 0:command configuration is not stored into flash. 
- 1:command configuration is stored into flash. (Default) 
 
Explanation
- This command affects set commands only. Query commands are always fetched from RAM. 
- This command will affect the following commands: 
Example
AT+SYSSTORE=0
AT+CWMODE=1  // Not stored into flash
AT+CWJAP="test","1234567890" // Not stored into flash
AT+SYSSTORE=1
AT+CWMODE=3  // Stored into flash
AT+CWJAP="test","1234567890" // Stored into flash