Wokwi - Online ESP32, STM32, Arduino Simulator

/* ESP32 WiFi Scanning example */

#include <WiFi.h>
#include <Wire.h>
#include <RTClib.h>
#include <ESPAsyncWebSrv.h>

// WiFi credentials
const char* ssid = "YourWiFiName";
const char* password = "YourWiFiPassword";

// Pin definitions
const int RELAY_PIN = 26;

// RTC object
RTC_DS1307 rtc;

// Web server on port 80
AsyncWebServer server(80);

// Timer variables
bool timerEnabled = false;
int onHour = 0;
int onMinute = 0;
int offHour = 0;
int offMinute = 0;

void setup() {
  Serial.begin(115200);
  
  // Initialize relay pin
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW);
  
  // Initialize RTC
  Wire.begin(21, 22); // SDA, SCL
  if (!rtc.begin()) {
    Serial.println("RTC failed to initialize");
    while (1);
  }
  
  // Connect to WiFi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");
  Serial.println(WiFi.localIP());

  // Web server routes
  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
    String html = "<html><body>";
    html += "<h1>Smart Socket Control</h1>";
    html += "<button onclick='toggleRelay()'>Toggle Socket</button>";
    html += "<script>function toggleRelay(){fetch('/toggle');}</script>";
    html += "</body></html>";
    request->send(200, "text/html", html);
  });

  server.on("/toggle", HTTP_GET, [](AsyncWebServerRequest *request) {
    digitalWrite(RELAY_PIN, !digitalRead(RELAY_PIN));
    request->send(200);
  });

  server.begin();
}

void loop() {
  if (timerEnabled) {
    DateTime now = rtc.now();
    
    // Check if it's time to turn on
    if (now.hour() == onHour && now.minute() == onMinute) {
      digitalWrite(RELAY_PIN, HIGH);
    }
    
    // Check if it's time to turn off
    if (now.hour() == offHour && now.minute() == offMinute) {
      digitalWrite(RELAY_PIN, LOW);
    }
  }
  
  delay(1000);
}