// NAMA: MUHAMMAD FA'IZ DWI ADHISKI
// KELAS: XI TEK 1

// === PENGGUNAAN SENSOR PIR & LCD_I2C ===

#include <LiquidCrystal_I2C.h>

const char* intro[] = {"M.Fa'Iz Dwi A.", "XI TEK 1"};
const char* msg[] = {"Sensor menyala!", "Sensor mati!"};
const int lcdAddr = 0x27;
const int lcdCol = 16;
const int lcdRow = 2;
const int center = lcdCol + (strlen(intro[0]) - strlen(intro[1])) / 2;

const int sensor = 0x22; // pin 34
int rs;

LiquidCrystal_I2C lcd(lcdAddr, lcdCol, lcdRow);

namespace Detector {
  int getSen() {
    rs = digitalRead(sensor);

    return rs;
  }

  void lcdIntro() {
    lcd.clear();
    lcd.setCursor(lcdCol, 0);
    lcd.printstr(intro[0]);
    lcd.setCursor(center, 1);
    lcd.printstr(intro[1]);

    for(int i = 0;i <= (lcdCol*2);i++) {
      lcd.scrollDisplayLeft();
      delay(150);
    }
  }

  void senOn() {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.printstr(msg[0]);
  }

  void senOff() {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.printstr(msg[1]);
  }

  void main() {
    if(Detector::getSen()) {
      Detector::senOn();
    } else {
      Detector::senOff();
    }

    delay(1000);
  }
}

void setup() {
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  pinMode(sensor, INPUT);

  Detector::lcdIntro();
}


void loop() {
  Detector::main();
}