Data Sheet

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5. TCP/IP 相关 AT 指令
5.2. Commands
5.2.1. AT+CIPSTATUS—Gets the Connection Status
5.2.2. AT+CIPDOMAIN—DNS Function
Execute Command
AT+CIPSTATUS
Response
STATUS:<stat>
+CIPSTATUS:<link󰐇ID>,<type>,<remote󰐇IP>,<remote󰐇port>,<local󰐇port>,<tetype>
Parameters
• <stat>: status of the ESP8266 Station interface.
‣ 2: The ESP8266 Station is connected to an AP and its IP is obtained.
‣ 3: The ESP8266 Station has created a TCP or UDP transmission.
‣ 4: The TCP or UDP transmission of ESP8266 Station is disconnected.
‣ 5: The ESP8266 Station does NOT connect to an AP.
• <link󰐇ID>: ID of the connection (0~4), used for multiple connections.
• <type>: string parameter, "TCP" or "UDP".
• <remote󰐇IP>: string parameter indicating the remote IP address.
• <remote󰐇port>: the remote port number.
• <local󰐇port>: ESP8266 local port number.
• <tetype>:
‣ 0: ESP8266 runs as a client.
‣ 1: ESP8266 runs as a server.
Execute Command
AT+CIPDOMAIN=<domain󰐇name>
Response
+CIPDOMAIN:<IP󰐇address>
Parameter
<domain󰐇name>: the domain name, length should be less than 64 bytes.
Example
AT+CWMODE=1󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇//󰐇set󰐇Station󰐇mode
AT+CWJAP="SSID","password"󰐇󰐇󰐇󰐇󰐇󰐇󰐇󰐇//󰐇access󰐇to󰐇the󰐇internet
AT+CIPDOMAIN="iot.espressif.cn"󰐇󰐇󰐇//󰐇DNS󰐇function
Espressif
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2017.05