#include <Arduino.h>
#include <WiFi.h>

const char *ssid = "Wokwi-GUEST";
const char *password = "";

unsigned long previousMillis = 0;
unsigned long interval = 5000; 

void iniWiFi()
{
    WiFi.mode(WIFI_STA);
    WiFi.begin(ssid, password); 
    Serial.print("Connecting to WiFi ");
    while (WiFi.status() != WL_CONNECTED)
    {
        Serial.print(".");
        delay(1000);
    }
    Serial.println();
    Serial.println(WiFi.localIP());
}

void setup()
{
    Serial.begin(9600);
    iniWiFi();
    Serial.print("RSSI: ");
    Serial.println(WiFi.RSSI()); 
}

void loop()
{
    unsigned long currentMillis = millis();
    if ((WiFi.status() != WL_CONNECTED) && (currentMillis - previousMillis >= interval)) // Sửa 'WL_CONNECTED' và 'perviousMillis' thành 'WL_CONNECTED' và 'previousMillis'
    {
        Serial.print(millis());
        Serial.println(" Reconnect to WiFi...");
        WiFi.disconnect();
        WiFi.reconnect(); 
        previousMillis = currentMillis;
    }
    if (WiFi.status() == WL_CONNECTED)
    {
        Serial.print("RSSI: ");
        Serial.println(WiFi.RSSI());
        delay(5000);
    }
}