User Manual

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Espressif Systems
ESP8266
AT Command Examples
3. UDP Transmission
UDP transmission is established via AT+CIPSTART. There is no such definition as UDP server or UDP
client. For more information about AT commands, please refer to documentation “ 4A-ESP8266__AT
Instruction Set ”.
•
Set WiFi mode :
AT+CWMODE=3 // softAP+station mode
Response :OK
•
Connect to router:
AT+CWJAP="SSID", "password" // SSID and password of router
Response :OK
•
Query device’s IP:
AT+CIFSR
Response :+CIFSR: STAIP, "192.168.101.104" // IP address of ESP8266 station
•
Connect PC to the same router as ESP8266 is connected to.
Using a network tool on the computer to create a UDP .
Below is two examples on UDP transmission.
Espressif Systems Confidential / Friday, Oct 23, 20157 16