Wokwi - Online ESP32, STM32, Arduino Simulator

#include <WiFi.h>
#include <WiFiClient.h>
#include <WebServer.h>
#include <ThingSpeak.h>
#include <DHT.h>

#define DHTPIN 15
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

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

WiFiClient client;
WebServer server(80);

int lampu1 = 35;
int lampu2 = 32;
int lampu3 = 33;
unsigned long lampuChannelNumber = 2456431;
const char *lampuReadAPIKey = "0XKV9H07INPGUV3X";
const int FieldNumber1 = 1; // Nomor field 1 
const int FieldNumber2 = 2; // Nomor field 2
const int FieldNumber3 = 3; // Nomor field 2
const int FieldNumber4 = 4;
unsigned long sensorChannelNumber = 2456431;
const char *sensorWriteAPIKey = "T1FA520FFA5I48JM";

void setup() 
{
  pinMode(lampu1, OUTPUT);
  pinMode(lampu2, OUTPUT);
  pinMode(lampu3, OUTPUT);
  Serial.begin(115200);
  dht.begin();

  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("WiFi connected");
  Serial.println(WiFi.localIP());

  ThingSpeak.begin(client);

  server.on("/", handleRoot);
  server.on("/data", handleData);
  server.begin();
  Serial.println("HTTP server started");
}

void loop() {
  server.handleClient();

  // Reading lampu data from ThingSpeak
  int lampuA = ThingSpeak.readLongField(lampuChannelNumber, 1, lampuReadAPIKey);
  int lampuB = ThingSpeak.readLongField(lampuChannelNumber, 2, lampuReadAPIKey);
  int lampuC = ThingSpeak.readLongField(lampuChannelNumber, 3, lampuReadAPIKey);

  // Controlling lampu1
  if (lampuA == 1) {
    digitalWrite(lampu1, HIGH);
  } else if (lampuA == 0) {
    digitalWrite(lampu1, LOW);
  }

  // Controlling lampu2
  if (lampuB == 1) {
    digitalWrite(lampu2, HIGH);
  } else if (lampuB == 0) {
    digitalWrite(lampu2, LOW);
  }

  if (lampuC == 1) {
    digitalWrite(lampu3, HIGH);
  } else if (lampuC == 0) {
    digitalWrite(lampu3, LOW);
  }

  // Reading sensor data
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  ThingSpeak.writeField(sensorChannelNumber, 4, temperature, sensorWriteAPIKey);

  delay(1000);
}

void handleRoot() {
  String html = "<html><head><title>IoT Dashboard</title></head><body><h1>IoT Dashboard</h1>";
  html += "<p><a href=\"/data\">View Sensor Data</a></p></body></html>";
  server.send(200, "text/html", html);
}

void handleData() {
  float temperature = ThingSpeak.readFloatField(sensorChannelNumber, 4, sensorWriteAPIKey);
  float humidity = dht.readHumidity(); // Assumes you want to read humidity from the sensor directly

  String json = "{";
  json += "\"temperature\": " + String(temperature) + ",";
  json += "\"humidity\": " + String(humidity);
  json += "}";

  server.send(200, "application/json", json);
}