Espressif Systems ESP8266 AT, Instruction Set, Page: 37 / 64

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4. Wi-Fi AT Commands
4.2.17. AT+CWDHCPS_CUR—Sets the IP Address Allocated by ESP8266 SoftAP DHCP;
Configuration Not Saved in Flash
4.2.18. AT+CWDHCPS_DEF—Sets the IP Address Allocated by ESP8266 SoftAP DHCP;
Configuration Saved in Flash
Commands
Query Command:
AT+CWDHCPS_CUR?
Set Command:
AT+CWDHCPS_CUR=<enable>,<lease time>,<start IP>,<end
IP>
Function: sets the IP address range of the ESP8266 SoftAP
DHCP server.
Response
+CWDHCPS_CUR=<lease time>,<start
IP>,<end IP>
OK
Parameters
• <enable>
:
‣
0
: Disable the settings and use the default IP range.
‣
1
: Enable setting the IP range, and the parameters below have to be set.
• <lease time>
: lease time; unit: minute; range [1, 2880].
• <start IP>
: start IP of the IP range that can be obtained from ESP8266 SoftAP DHCP server.
• <end IP>
: end IP of the IP range that can be obtained from ESP8266 SoftAP DHCP server.
Notes
•
The configuration changes will NOT be saved in the flash.
•
This AT command is enabled when ESP8266 runs as SoftAP, and when DHCP is enabled. The IP
address should be in the same network segment as the IP address of ESP8266 SoftAP.
Examples
AT+CWDHCPS_CUR=1,3,"192.168.4.10","192.168.4.15"
or
AT+CWDHCPS_CUR=0 //Disable the settings and use the default IP range.
Commands
Query Command:
AT+CWDHCPS_DEF?
Set Command:
AT+CWDHCPS_DEF=<enable>,<lease time>,<start IP>,<end
IP>
Function: sets the IP address range of the ESP8266 SoftAP
DHCP server.
Response
+CWDHCPS_DEF=<lease time>,<start
IP>,<end IP>
OK
Parameters
• <enable>
:
‣
0
: Disable the settings and use the default IP range.
‣
1
: Enable setting the IP range, and the parameters below have to be set.
• <lease time>
: lease time; unit: minute; range [1, 2880].
• <start IP>
: start IP of the IP range that can be obtained from ESP8266 SoftAP DHCP server.
• <end IP>
: end IP of the IP range that can be obtained from ESP8266 SoftAP DHCP server.
Notes
•
The configuration changes will be stored in the user parameter area in the flash.
•
This AT command is enabled when ESP8266 runs as SoftAP, and when DHCP is enabled. The IP
address should be in the same network segment as the IP address of ESP8266 SoftAP.
Espressif ! /52 31 2017.05