Data Sheet

6. Appendix

ESP8266 AT commands below will save the conﬁguration changes in ﬂash:

AT Command

Examples

Conﬁguration Saved in the User Parameter Area in the Flash

AT+UART_DEF

AT+UART_DEF=115200,8,1,0,3

AT+CWDHCP_DEF

AT+CWDHCP_DEF=1,1

AT+CIPSTAMAC_DEF

AT+CIPSTAMAC_DEF="18:fe:35:98:d3:7b"

AT+CIPAPMAC_DEF

AT+CIPAPMAC_DEF="1a:fe:36:97:d5:7b"

AT+CIPSTA_DEF

AT+CIPSTA_DEF="192.168.6.100"

AT+CIPAP_DEF

AT+CIPAP_DEF="192.168.5.1"

AT+CWDHCPS_DEF

AT+CWDHCPS_DEF=1,3,"192.168.4.10","192.168.4.15"

AT+SAVETRANSLINK

AT+SAVETRANSLINK_DEF=1,"192.168.6.10",1001

AT+CIPDNS_DEF

AT+CIPDNS_DEF=1,"208.67.220.220"

AT+RFAUTOTRACE

AT+RFAUTOTRACE=0

Conﬁguration Saved in the System Parameter Area in the Flash

AT+CWMODE_DEF

AT+CWMODE_DEF=3

AT+CWJAP_DEF

AT+CWJAP_DEF="abc","0123456789"

AT+CWSAP_DEF

AT+CWSAP_DEF="ESP8266","12345678",5,3

AT+CWAUTOCONN

AT+CWAUTOCONN=1

⚠ Notice:

• Only when the conﬁguration changes will the AT ﬁrmware write the new conﬁguration into the ﬂash. Therefore,

users need not be concerned about wearing out the ﬂash on repeated application of commands that set the same

default conﬁgurations over and over again.

• For 512 KB + 512 KB Flash Map, the user parameter area is 0x7C000 ~ 0x80000, 16 KB;

• For 1024 KB + 1024 KB Flash Map: the user parameter area is 0xFC000 ~ 0x100000, 16 KB;

•

The system parameter area is always the last 16 KB in the ﬂash.

Espressif

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2017.05