/*
 * 
  * 
 * code for LAB 1 v1.0
 * created 2022
  *by nasrul([email protected])
 * matrix number
 * 
 */
  #include <LiquidCrystal_PCF8574.h>//enable lcd 16x2 
#include <Wire.h> ///enable protocol serial +i2c
LiquidCrystal_PCF8574 lcd(0x27); // set the LCD address to 0x27 for a 16 chars and 2 line display
#include <SimpleDHT.h>
#include <NTPClient.h>
#include <WiFi.h>
//#include <WiFiUdp.h>


// wajib ada
//wifi setup
const char *ssid     = "Wokwi-GUEST";//ssid id
const char *password = "";// ssid password


WiFiUDP ntpUDP;
//NTPClient timeClient(ntpUDP);
NTPClient timeClient(ntpUDP, "asia.pool.ntp.org", 28800, 60000);

//dht 11
int pinDHT22 =16;//pin dht 11
SimpleDHT22 dht22(pinDHT22);
byte temperature = 0;
byte humidity = 0;



//led 
const int red_led = 5 ; // RED LED PIN D5 
const int yellow_led = 18 ; // yellow LED PIN D6
const int green_led = 19 ; // green LED PIN D7


//masa

String masa; 
int minutes=0 ;
int hours= 0; 
int seconds=0;

 void setup() {
  Serial.begin(115200);
  //output mode 
  pinMode(red_led, OUTPUT);    // sets the digital d5 as output
  pinMode(yellow_led, OUTPUT);    // sets the digital d6 as output
  pinMode(green_led, OUTPUT);    // sets the digital d7 as output
//UART COMM

  WiFi.begin(ssid, password);

  //wifi connected status
while ( WiFi.status() != WL_CONNECTED ) {
    delay ( 500 );
    Serial.print ( "." );
  }

  timeClient.begin();//start com ntp
  
  delay(1000);
  
  Serial.println("lab 1 v1 ");//serial comm write
  Serial.println("By Nasrul_2021 ");//serial comm write
 //serial i2c com ldc
 //lcd
  Wire.begin();//i2c serial 
  Wire.beginTransmission(0x27);
  lcd.begin(16, 2); // initialize the lcd
  lcd.setBacklight(255);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("lab1v1");
  lcd.setCursor(0, 1);
  lcd.print("By Nasrul_2022");
 
  delay(1000);
}

void loop() {
  timeClient.update();
  Serial.println(timeClient.getFormattedTime());
  masa = timeClient.getFormattedTime();
  hours = timeClient.getHours();
  minutes = timeClient.getMinutes();
  
  delay(1000);

//dht data 
float temperature = 0;
float humidity = 0;
int err = SimpleDHTErrSuccess;
  if ((err = dht22.read2(&temperature, &humidity, NULL)) != SimpleDHTErrSuccess) {
    Serial.print("Read DHT22 failed, err="); Serial.print(SimpleDHTErrCode(err));
    Serial.print(","); Serial.println(SimpleDHTErrDuration(err)); delay(2000);
    return; 
  }
  Serial.print("Sample OK: ");
  Serial.print((int)temperature); Serial.print(" *C, "); 
  Serial.print((int)humidity); Serial.println(" H");
  Serial.print("Time : ");
  Serial.print(hours);
  //Serial.print(":");
  //Serial.print(minutes);
 
//display lcd
  lcd.setCursor(0, 0);
  lcd.print("TIME:");
  lcd.print(timeClient.getHours());
  lcd.print(":");
  lcd.print(timeClient.getMinutes());
  lcd.print(":");
  lcd.print(timeClient.getSeconds());
  lcd.print("   ");
  lcd.setCursor(0, 1);
  lcd.print("H:");
  lcd.print(humidity);
  lcd.print(";");
  lcd.print("Temp:");
  lcd.print(temperature);
  lcd.print((char)223);
  lcd.print("C");

///condition rule time led

if ( timeClient.getSeconds() >30 ){

    digitalWrite( red_led,HIGH);
}
if ( timeClient.getSeconds() <=30 ){

    digitalWrite( red_led,LOW);
} 

if (temperature > 25 ){
  digitalWrite( yellow_led,HIGH);
}
if (temperature <= 25 ){
  digitalWrite( yellow_led,LOW);
}
if (humidity > 41 ){
  digitalWrite( green_led,HIGH);
}
if (humidity <= 41 ){
  digitalWrite(green_led,LOW);
}
}