ESP32 WiFi Library – WiFi.isConnected

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Description

The isConnected method checks whether the ESP32 is currently connected to a Wi-Fi network. This method is useful for verifying network connectivity before performing network operations.

Syntax and Usage

This method returns a boolean value indicating the connection status of the ESP32.

WiFi.isConnected()

This method does not accept any arguments and returns true if the ESP32 is connected to a Wi-Fi network, or false otherwise.

Argument(s)

This method does not accept any arguments.

Return Value

The isConnected method returns a bool value:

• true if the ESP32 is connected to a Wi-Fi network.
• false if the ESP32 is not connected to a Wi-Fi network.

Example Codes

Check Wi-Fi connection status

This code demonstrates how to use the ESP32 WiFi Library’s isConnected() method to check whether the ESP32 is currently connected to a WiFi network. The isConnected() method returns true if the device is connected and false otherwise. This allows the ESP32 to continuously monitor its connection status and take appropriate actions based on the result.

To use this code, replace “your_SSID” and “your_PASSWORD” with your WiFi network’s SSID and password. Upload the code to your ESP32 board and open the Serial Monitor at 115200 baud. The code will connect to the WiFi network and periodically check the connection status every 5 seconds, printing whether the ESP32 is connected or not. Ensure the ESP32 remains within range of the WiFi signal for accurate results.

/*
 * Author: Avant Maker
 * Date: February 8, 2025
 * Version: 1.0
 * Description: This code demonstrates how to continuously check 
 * and print whether the ESP32 is connected to the WiFi with ESP32 
 * WiFi Library's WiFi.isConnected().
 *
 * License: MIT 
 * 
 * Code Source: This example code is sourced from the Comprehensive Guide
 * to the ESP32 Arduino Core Library, accessible on AvantMaker.com. 
 * For additional code examples and in-depth documentation related to 
 * the ESP32 Arduino Core Library, please visit:
 *
 * https://avantmaker.com/references/esp32-arduino-core-index/
 *
 * AvantMaker.com, your premier destination for all things DIY, AI, IoT, 
 * Smart Home, and STEM projects. We are dedicated to empowering makers,
 * learners, and enthusiasts with the resources they need to bring their 
 * innovative ideas to life.
 */

#include <WiFi.h>

const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";

void setup() {
    Serial.begin(115200);
    WiFi.begin(ssid, password);

    Serial.println("Connecting to WiFi...");
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }
    Serial.println("\nConnected to WiFi!");
}

void loop() {
        // Check connection status
    if (WiFi.isConnected()) {
        Serial.println("ESP32 is connected to the network.");
    } else {
        Serial.println("ESP32 is not connected to the network.");
    }
    delay(5000);
}