// MCU BASIC: https://www.basic4mcu.com
// DateTime : 2018-06-18 오후 5:22:41
// by Ok-Hyun Park
//
#include <SimpleDHT.h>
SimpleDHT11 dht11;
//
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x3F,16,2);
//
int flame=A0;
int Beep =8;      // 피에조부저
//
int pinDHT11=2;
int ledPin1=11;   // 1번 LED
int ledPin2=10;   // 2번 LED
int PIRsensor=9;  // 센서 신호핀
//
int val=0,pirState=0;
//
void setup(){
  pinMode(ledPin1,OUTPUT); pinMode(ledPin2,OUTPUT); // LED
  pinMode(Beep,OUTPUT);
  lcd.init(); lcd.backlight();
  Serial.begin(9600);
}
//
void loop(){
  val=digitalRead(PIRsensor); Serial.print("PIR="); Serial.println(val); // PIR
  if(val){                    // 센서 신호값이 HIGH면(인체 감지가 되면)
    if(pirState==LOW){
      digitalWrite(ledPin1,HIGH); digitalWrite(ledPin2,LOW);
      pirState=HIGH; Serial.println("Welcome!"); 
    }
  }
  else{                  // 인체감지가 없으면
    if(pirState==HIGH){
      digitalWrite(ledPin1,LOW); digitalWrite(ledPin2,HIGH);
      pirState=LOW; Serial.println("Good Bye~");
    }
  }
  //
  val=analogRead(flame); Serial.print("Flame="); Serial.println(val); // 화재센서
  if(val>=300)digitalWrite(Beep,HIGH);
  else        digitalWrite(Beep,LOW);
  //
  byte temperature=0;
  byte humidity=0;
  //
  dht11.read(pinDHT11,&temperature,&humidity,NULL);
  //
  Serial.print((int)temperature); Serial.print("*C,");
  Serial.print((int)humidity);    Serial.println("%");
  //
  lcd.clear();
  lcd.print((int)temperature); lcd.print("*C,");
  lcd.print((int)humidity);    lcd.print("%");
  //
  delay(1000); // DHT11 sampling rate is 1HZ.
}