#include <DallasTemperature.h>

#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#include <LiquidCrystal_I2C.h>

//define I2C address......
LiquidCrystal_I2C lcd(0x27,16,2);

#define OLED_RESET -1
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define SCREEN_ADDRESS 0x3C

int x_cursor = 30;
int y_cursor = 30;

Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

// Data wire is conntec to the Arduino digital pin 4
#define ONE_WIRE_BUS 8

// Setup a oneWire instance to communicate with any OneWire devices
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature sensor 
DallasTemperature sensors(&oneWire);

int led = 13;                // the pin that the LED is atteched to
int sensor = 2;              // the pin that the sensor is atteched to
int state = LOW;             // by default, no motion detected
int val = 0;                 // variable to store the sensor status (value)


void setup(void)
{
  // Start serial communication for debugging purposes
  Serial.begin(9600);
  // Start up the library
  sensors.begin();

  pinMode(led, OUTPUT);      // initalize LED as an output
  pinMode(sensor, INPUT);    // initialize sensor as an input

  // put your setup code here, to run once:
  Serial.begin(9600);

  if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println("Failed to initialize oled display");
    while(1);
  }

  oled.clearDisplay();
  oled.setTextSize(1);
  oled.setTextColor(WHITE);
  oled.setCursor(0, 0);
  oled.println("Hello world!");
  oled.display();


  lcd.init();
  lcd.clear();
  lcd.backlight();

  lcd.setCursor(2,0);
  lcd.print("Hello World");

}

void loop(void){ 
  // Call sensors.requestTemperatures() to issue a global temperature and Requests to all devices on the bus
  sensors.requestTemperatures(); 
   
  oled.clearDisplay();
  oled.setTextSize(1);
  oled.setTextColor(WHITE);
  oled.setCursor(7, 9);
  oled.print("temperature: ");
  // Why "byIndex"? You can have more than one IC on the same bus. 0 refers to the first IC on the wire
  Serial.print(sensors.getTempCByIndex(0)); 
  Serial.print(" - Fahrenheit temperature: ");
  Serial.println(sensors.getTempFByIndex(0));
  delay(10000);

  val = digitalRead(sensor);   // read sensor value
  if (val == HIGH) {           // check if the sensor is HIGH
    digitalWrite(led, HIGH);   // turn LED ON
    delay(100);                // delay 100 milliseconds 
    
    if (state == LOW) {
      lcd.setCursor(2,1);
      lcd.println("Motion detected!"); 
      state = HIGH;       // update variable state to HIGH
    }
  } 
  else {
      digitalWrite(led, LOW); // turn LED OFF
      delay(200);             // delay 200 milliseconds 
      
      if (state == HIGH){
        lcd.setCursor(2,1);
        lcd.println("Motion stopped!");
        state = LOW;       // update variable state to LOW
    }
  }

  scrollRight();
  
  if (x_cursor == 57) {
    while (x_cursor != 1) {
      scrollLeft();
      oled.display();
    }
  }

  oled.display();
}

 void scrollRight() {
  delay(10);

  oled.clearDisplay();

  x_cursor += 1;

  oled.setCursor(x_cursor, y_cursor);

  oled.println("Hello world!");
}

void scrollLeft() {
  delay(10);

  oled.clearDisplay();

  x_cursor -= 1;

  oled.setCursor(x_cursor, y_cursor);

  oled.println("Hello world!"); 
}