/*************************************************************

  This example shows how value can be pushed from Arduino to
  the Blynk App.

  WARNING :
  For this example you'll need Adafruit DHT sensor libraries:
    https://github.com/adafruit/Adafruit_Sensor
    https://github.com/adafruit/DHT-sensor-library

  App project setup:
    Value Display widget attached to V5
    Value Display widget attached to V6
 *************************************************************/

// Template ID, Device Name and Auth Token are provided by the Blynk.Cloud
// See the Device Info tab, or Template settings
// #define BLYNK_TEMPLATE_ID           "Temp1"
// #define BLYNK_DEVICE_NAME           "ESP32"
// #define BLYNK_AUTH_TOKEN            "f_s3kQXN_Hkp9s6wcqtZc6U9NhUnfjk9"
// #define BLYNK_TEMPLATE_ID "TMPLoSqj_vws"
// #define BLYNK_TEMPLATE_NAME "Quickstart Template"
// #define BLYNK_AUTH_TOKEN "f_s3kQXN_Hkp9s6wcqtZc6U9NhUnfjk9"

#define BLYNK_TEMPLATE_ID "TMPL6kUCFOkwK"
#define BLYNK_TEMPLATE_NAME "Smart Pillow"
#define BLYNK_AUTH_TOKEN "zkhztsyRHOYJqR26aFxK7di0kGJQ9ht9"
// Comment this out to disable prints and save space
#define BLYNK_PRINT Serial


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

char auth[] = BLYNK_AUTH_TOKEN;

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "Wokwi-GUEST"; // Change this with your Wifi SSID
char pass[] = "";             // Change this with your wifi password

#define DHTPIN 2          // What digital pin we're connected to

// Uncomment whatever type you're using!
// #define DHTTYPE DHT11     // DHT 11
#define DHTTYPE DHT22   // DHT 22, AM2302, AM2321
//#define DHTTYPE DHT21   // DHT 21, AM2301

DHT dht(DHTPIN, DHTTYPE);
BlynkTimer timer;

//====== GAS Sensor  =========
const byte gasPin = 4; // Gas sensor pin

// This function sends Arduino's up time every second to Virtual Pin (5).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App.
void sendSensor()
{
  float h = dht.readHumidity(); // Reaa Humidity
  float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit

  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
  
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V5, h);  // Update humidity
  Blynk.virtualWrite(V6, t); // Update Temperature
  Blynk.virtualWrite(V7, digitalRead(gasPin)); // Update gas sensor value
  Blynk.virtualWrite(V3, random(2)); // Update gas sensor value
  
}

void setup()
{
  // Debug console
  Serial.begin(115200);
  
  pinMode(gasPin, INPUT); // Set gas sensor pin as input

  Blynk.begin(auth, ssid, pass);
  // You can also specify server:
  //Blynk.begin(auth, ssid, pass, "blynk.cloud", 80);
  //Blynk.begin(auth, ssid, pass, IPAddress(192,168,1,100), 8080);

  dht.begin();

  // Setup a function to be called every second
  timer.setInterval(1000L, sendSensor);
}

void loop()
{
  Blynk.run();
  timer.run();
}