// LCD1602 to Arduino Uno connection example

#include <LiquidCrystal.h>

int time_card;
int time_change;
int time_loop;
int time_start;
bool ledCursor;
int back_light = 5;
double lightlevel = 0;
String inputString = "";
bool sens = 0;
int CountDownTime;

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

void setup() {
  Serial.begin(9600);
  // pinMode(back_light, OUTPUT);
  lcd.begin(16, 2);
  // you can now interact with the LCD, e.g.:
  lcd.print("Hello World!");
  time_change = millis();
  time_loop = millis();
  ledCursor = 0;
  Serial.println("Enter lightlevel");
}

String enter_number(String s){
  String number = "";
  int len = sizeof(s);
  for(int i=0;i<len;i++){
    if (int(s[i])>=48 && int(s[i])<=57){
      number += s[i];
    }
    else{
      if (len == 0){
        return "Not a number";
      }
      break;
    }
  }
  return number;
}

void loop() {
  
  time_start = millis();

  while(time_card - time_start < 10000){
    // lcd.clear();
    time_card = millis();
    int lastCount = CountDownTime;
    CountDownTime = floor(10 - ((time_card - time_start)/1000));
    if(CountDownTime != lastCount){
      lcd.clear();
    }
    Serial.println(CountDownTime);
    lcd.setCursor(0,1);
    lcd.print(CountDownTime);
    delay(10);
  }

  lcd.setCursor(0,1);
  lcd.println("gg");
  delay(10000);



}