const int LampuMerah = 1;
const int LampuKuning = 2;
const int LampuHijau = 3;
#include <LiquidCrystal.h>
#include "DHT.h"
#define DHTPIN 4
LiquidCrystal lcd(7,8,9,10,11,12);
#define DHTTYPE DHT22
DHT dht(DHTPIN,DHTTYPE);




void setup() {
  dht.begin();
  pinMode(LampuMerah, OUTPUT);
  pinMode(LampuKuning, OUTPUT);
  pinMode(LampuHijau, OUTPUT);
  lcd.begin(16,2);
  lcd.print("Lampu LaluLintas");
  // delay(1000);
  // put your setup code here, to run once:

}

void loop() {
  float t = dht.readTemperature();
  if(isnan(t)){
    lcd.setCursor (1,0);
    lcd.print("Failed to read from DHT");
  } else {
    lcd.setCursor(1,1);
    DisplayTemp(t);
  lcd.setCursor(1,0);
  digitalWrite(LampuMerah, HIGH); 
  lcd.print("Tolong Berhenti");
  for(int PositionCounter = 1; PositionCounter < 15;
  PositionCounter++){
    lcd.scrollDisplayLeft();
    delay(715);
  }

  lcd.clear();
  lcd.setCursor(15,0);
  lcd.print("Tolong Berhenti");
  lcd.setCursor(15,1);
  DisplayTemp(t);
  for(int PositionCounter = 1; PositionCounter < 15;
  PositionCounter++){
    lcd.scrollDisplayLeft();
    delay(715);
  }
  lcd.clear();
  delay(500);
  lcd.setCursor(1,0);
  lcd.print("Hati Hati");
  lcd.setCursor(1,1);
  DisplayTemp(t);

  digitalWrite(LampuMerah, LOW);
  digitalWrite(LampuKuning, HIGH);
  for(int PositionCounter = 1; PositionCounter < 15;
  PositionCounter++){
    lcd.scrollDisplayLeft();
    delay(150);
  }

  lcd.clear();
  lcd.setCursor(15,0);
  lcd.print("Hati Hati");
  lcd.setCursor(15,1);
  DisplayTemp(t);
  for(int PositionCounter = 1; PositionCounter < 15;
  PositionCounter++){
    lcd.scrollDisplayLeft();
    delay(150);
  }
  lcd.clear();
  delay(500);
  lcd.setCursor(1,0);
  lcd.print("Selamat jalan");
  lcd.setCursor(1,1);
  DisplayTemp(t);
  digitalWrite(LampuKuning, LOW);
  digitalWrite(LampuHijau, HIGH);
  for(int PositionCounter = 1; PositionCounter < 15;
  PositionCounter++){
    lcd.scrollDisplayLeft();
    delay(715);
  }

  lcd.clear();
  lcd.setCursor(15,0);
  lcd.print("Selamat Jalan");
  lcd.setCursor(15,1);
  DisplayTemp(t);
  for(int PositionCounter = 1; PositionCounter < 15;
  PositionCounter++){
    lcd.scrollDisplayLeft();
    delay(715);
  }
  delay(500);
  }

  
  // put your main code here, to run repeatedly:

}
void DisplayTemp(float t) {
  lcd.print("Temp: ");
    lcd.print(t);
    lcd.print("c");
}