ESP32 WiFi Library -WiFi.config

/*
 * Author: Avant Maker
 * Date: February 7, 2025
 * Version: 1.0
 * Description: This code demonstrates how to configure
 * and connect an ESP32 to a WiFi network using ESP32 WiFI Library's
 * config method. It defines the static IP configuration including
 * the local IP, gateway, subnet mask, and optional DNS servers.
 * The program attempts to apply the static IP configuration
 * and then connects to a specified WiFi network using its SSID
 * and password. Once connected, it prints the assigned IP
 * address to confirm the successful connection.
 *
 * 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/home/all-about-esp32-arduino-core-library/
 *
 * 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 nnovative ideas to life.
 */

#include <WiFi.h> // Include the WiFi library for ESP32

void setup() {
  // Initialize serial communication for debug output
  Serial.begin(115200);
  Serial.println(); // Print a blank line for better readability
  Serial.println("WiFi Static IP Configuration Example");

  // Define the static IP address and network configuration
  IPAddress local_IP(192, 168, 1, 186);  // Static IP address for the ESP32
  IPAddress gateway(192, 168, 1, 1);     // Gateway for the network
  IPAddress subnet(255, 255, 255, 0);    // Subnet mask
  IPAddress primaryDNS(8, 8, 8, 8);      // Primary DNS server (optional)
  IPAddress secondaryDNS(8, 8, 4, 4);    // Secondary DNS server (optional)

  // Attempt to configure the WiFi settings with the static IP
  Serial.println("Applying static IP configuration...");
  if (WiFi.config(local_IP, gateway, subnet, primaryDNS, secondaryDNS)) {
    Serial.println("Static IP configuration applied successfully.");
  } else {
    Serial.println("Static IP configuration failed. Using default settings.");
  }

  // Connect to the WiFi network with SSID and password
  const char* ssid = "YourSSID";          // Replace with your WiFi SSID
  const char* password = "YourPassword";  // Replace with your WiFi password

  Serial.print("Connecting to WiFi network: ");
  Serial.println(ssid);
  WiFi.begin(ssid, password); // Start the connection process

  // Wait until the WiFi is connected
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000); // Wait 1 second
    Serial.println("Attempting to connect to WiFi...");
  }

  // Once connected, print the connection details
  Serial.println("Connected to WiFi!");
  Serial.print("Assigned IP address: ");
  Serial.println(WiFi.localIP()); // Print the assigned IP address
}

void loop() {
  // Placeholder for user code
  // In this example, the loop does nothing
}