#include <WiFi.h>
#include <ThingsBoard.h>

const char *ssid = "Wokwi-GUEST";
const char *password = "";
const char *thingsboardServer = "demo.thingsboard.io";
const char *accessToken = "Wg6oPsnLdNNDHLKgueO2";

const int lm35Pin = 12;

WiFiClient espClient;
ThingsBoard tb(espClient);

void setup() {
  Serial.begin(115200);

  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");

  // Connect to ThingsBoard
  tb.begin(thingsboardServer, accessToken);
}

void loop() {
  // Read LM35 temperature
  int rawValue = analogRead(lm35Pin);
  float voltage = (rawValue / 4095.0) * 3.3;
  float temperature = (voltage - 0.5) * 100.0;

  // Print and send temperature to ThingsBoard
  Serial.print("Temperature: ");
  Serial.println(temperature);

  // Send data to ThingsBoard
  tb.sendTelemetryFloat("temperature", temperature);

  delay(1000); // Send data every 1 seconds
}