#include "DHT.h"
#define DHTPIN 4
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
float h, t;
const int buttonPin=35;
const int ledPin=2;
int ledState;
int buttonState;

void setup() {
  Serial.begin(115200);
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin, INPUT);
  digitalWrite(ledPin, LOW);
  dht.begin();
  Serial.print("Bắt đầu");
}

void ReadingDHT22(){
  h=dht.readHumidity();
  t=dht.readTemperature();
  if(isnan(h) || isnan(t)){
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }
}


void loop() {
  ReadingDHT22();
  buttonState=digitalRead(buttonPin);
  if(buttonState == HIGH){
    Serial.println("Kiểm tra");
  if(h>=70){
    ledState= HIGH;
  }
  else {
    ledState=LOW;
  }
  digitalWrite(ledPin,ledState);
  Serial.println("Data log ");
  Serial.print("Độ ẩm: ");
  Serial.print(h);
  Serial.println("%");
  Serial.print("Nhiệt độ:");
  Serial.print(t);
  Serial.println("độ C");
}
  if(ledState==HIGH)
  {
    Serial.println("Độ ẩm trên 70%");
    Serial.println("Sáng led");
  }
  else{
    Serial.println("Độ dưới 70%");
    Serial.println("Tắt Led");
  }
  Serial.println("--------------------------------------------");
 delay(50);
}