#include <DHT.h>
#include <WiFi.h>
#include <FirebaseESP32.h>


#define FIREBASE_HOST "https://esp32-dht22-c7861-default-rtdb.firebaseio.com/"
#define FIREBASE_AUTH "DFMonEvRjYSO7Ynf9mNFEdu8Cc25XSCJi3pD4P7O"
#define DHTPIN 15    // Chân dữ liệu của DHT11, với NodeMCU chân D5 GPIO là 14
#define DHTTYPE DHT22   // DHT22
#define LED1 18
#define BUTTON 14

TaskHandle_t ledTaskHandle;
TaskHandle_t buttonTaskHandle;

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

DHT dht(DHTPIN, DHTTYPE);
FirebaseData fbdo;

void ledTask(void* pvParameters) {
  TickType_t delay = 100;  // Initial delay of 100 milliseconds
  
  while (1) {
    digitalWrite(LED1, HIGH);  // Turn on the LED
    vTaskDelay(delay / portTICK_PERIOD_MS);  // Delay for the specified time
    
    digitalWrite(LED1, LOW);  // Turn off the LED
    vTaskDelay(delay / portTICK_PERIOD_MS);  // Delay for the specified time
  }
}
void buttonTask(void* pvParameters) {
  TickType_t delay = 100;  // Initial delay of 100 milliseconds
  
  while (1) {
    // Check the button state
    if (digitalRead(BUTTON) == HIGH) {
      // Button is pressed, so change the delay to 10 milliseconds
      delay = 10;
    } else {
      // Button is not pressed, so revert to the default delay of 100 milliseconds
      delay = 100;
    }
    
    vTaskDelay(100 / portTICK_PERIOD_MS);  // Poll the button state every 100 milliseconds
  }


void setup() {
  Serial.begin(9600);
  pinMode(LED1, OUTPUT);
  pinMode(BUTTON, INPUT);
  delay(100);
  WiFi.begin(ssid, pass);
  Serial.print("Connecting ...");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }

  Serial.println("");
  Serial.println("Connected !!!");
  Serial.println(WiFi.localIP());

  Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH); delay(100);
  dht.begin(); delay(100);

  xTaskCreatePinnedToCore(ledTask, "LED Task", 2048, NULL, 1, &ledTaskHandle, 0);
  xTaskCreatePinnedToCore(buttonTask, "Button Task", 2048, NULL, 1, &buttonTaskHandle, 1);
}

void loop() {
  float h = dht.readHumidity();
  float t = dht.readTemperature();  // Đọc nhiệt độ theo độ C

  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Serial.print("Temp: ");
  Serial.print(t);
  Serial.print(" °C  ");
  Serial.print("Humi: ");
  Serial.print(h);
  Serial.println(" %");

  Firebase.setFloat(fbdo, "TEMP", t);
  Firebase.setFloat(fbdo, "HUMI", h);
  
  delay(500);
}