// NodeMCU Wi-Fi Connection Example

#include   

const char* ssid = "Your_SSID";        // Replace with your Wi-Fi SSID
const char* password = "Your_PASSWORD"; // Replace with your Wi-Fi password

const int MAX_ATTEMPTS = 40;  // 20 seconds timeout (500ms * 40)

void setup() {
  Serial.begin(115200);
  delay(100);
  Serial.println("\nConnecting to WiFi...");
  
  WiFi.begin(ssid, password);
  
  int attempts = 0;
  while (WiFi.status() != WL_CONNECTED && attempts < MAX_ATTEMPTS) {
    delay(500);
    Serial.print(".");
    attempts++;
  }
  
  Serial.println();
  
  if (WiFi.status() == WL_CONNECTED) {
    Serial.println("Connected to WiFi!");
    Serial.print("IP Address: ");
    Serial.println(WiFi.localIP());
  } else {
    Serial.println("Connection failed! Check SSID/Password");
  }
}

void loop() {
  static unsigned long lastCheck = 0;
  unsigned long now = millis();
  
  // Check every 10 seconds
  if (now - lastCheck >= 10000) {
    lastCheck = now;
    
    if (WiFi.status() != WL_CONNECTED) {
      Serial.println("Wi-Fi lost. Reconnecting...");
      WiFi.disconnect();        // Reset previous connection
      delay(100);
      WiFi.begin(ssid, password);  // Reconnect
      
      // Wait for reconnection with timeout
      int attempts = 0;
      while (WiFi.status() != WL_CONNECTED && attempts < 20) {
        delay(500);
        Serial.print(".");
        attempts++;
      }
      
      if (WiFi.status() == WL_CONNECTED) {
        Serial.println("\nReconnected!");
        Serial.print("New IP: ");
        Serial.println(WiFi.localIP());
      } else {
        Serial.println("\nReconnection failed");
      }
    }
  }
  
  delay(100);  // Prevent CPU overload
}