#define BLYNK_TEMPLATE_ID "TMPL6AO0k8lTN"
#define BLYNK_AUTH_TOKEN "zW4XW3s9rLrC0M3QcqIwD_OaBoAXx5sf"
#define BLYNK_TEMPLATE_NAME "aidil temperature sensor"

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <DHT.h>

#define DHT_PIN 12
#define DHTTYPE DHT22
#define PULSE_PIN 35

DHT dht(DHT_PIN, DHTTYPE);

char ssid[] = "Wokwi-GUEST";
char pass[] = "";

void setup() {
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");

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

  // Initialize Blynk
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  // Initialize DHT sensor
  dht.begin();
}

void loop() {
  Blynk.run();

  // Read sensor values
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  // Example: Read pulseValue from PULSE_PIN
  int16_t pulseValue = analogRead(PULSE_PIN);

  // Example: Convert pulseValue to voltage
  float voltage = pulseValue * (5.0 / 4095.0);

  // Example: Calculate heartRate from voltage
  int heartRate = (voltage / 3.3) * 675;

  // Send sensor data to Blynk app
  Blynk.virtualWrite(V0, temperature);
  Blynk.virtualWrite(V1, humidity);
  Blynk.virtualWrite(V2, heartRate);

  // Print sensor values to Serial Monitor
  Serial.print("Heart Rate: ");
  Serial.print(heartRate);
  Serial.print(" Temp: ");
  Serial.print(temperature);
  Serial.print(" Humidity: ");
  Serial.println(humidity);

  delay(100);  // Delay for stability, adjust as needed
}