Freenove ESP32-S3 User Manual

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Chapter 6 TCP/IP
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}
if (Serial.available() > 0) {
delay(20);
String line = Serial.readString();
client.print(line);
}
if (client.connected () == 0) {
client.stop();
WiFi.disconnect();
}
}
Add WiFi function header file.
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#include <WiFi.h>
Enter the actual router name, password, remote server IP address, and port number.
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const char *ssid_Router = "********"; //Enter the router name
const char *password_Router = "********"; //Enter the router password
#define REMOTE_IP "********" //input the remote server which is you want to connect
#define REMOTE_PORT 8888 //input the remote port which is the remote provide
Apply for the method class of WiFiClient.
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WiFiClient client;
Connect specified WiFi until it is successful. If the name and password of WiFi are correct but it still fails to
connect, please push the reset key.
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WiFi.begin(ssid_Router, password_Router);
Serial.print("\nWaiting for WiFi... ");
while (WiFi.status() ! = WL_CONNECTED) {
Serial.print(".");
delay(500);
}
Send connection request to remote server until connect successfully. When connect successfully, print out the
connecting prompt on the serial monitor and send messages to remote server.
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while (!client.connect(REMOTE_IP, REMOTE_PORT)) {//Connect to Server
Serial.println("Connection failed.");
Serial.println("Waiting a moment before retrying...");
}
Serial.println("Connected");
client.print("Hello\n");
When ESP32-S3 receive messages from servers, it will print them out via serial port; Users can also send
messages to servers from serial port.
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if (client.available() > 0) {
delay(20);
//read back one line from the server
String line = client.readString();
Serial.println(REMOTE_IP + String(":") + line);
}

Freenove ESP32-S3 Specifications

General

Brand	Freenove
Model	ESP32-S3
Category	Control Unit
Language	English