#include <Bounce2.h>

#include <LiquidCrystal_I2C.h>


#define I2C_ADDR 0x27
#define LCD_COLUMNS 16
#define LCD_LINES 2


LiquidCrystal_I2C lcd (I2C_ADDR, LCD_COLUMNS, LCD_LINES);

#define PIN_MODE INPUT_PULLUP
#define INTERVAL_IN_MS 10

Bounce2::Button b1 = Bounce2::Button();
Bounce2::Button b2 = Bounce2::Button();





int status = 0;
int position = 0;
unsigned long last = millis();

void setup() {

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

  b1.attach ( 7, PIN_MODE );
  b1.interval (INTERVAL_IN_MS);
  b1.setPressedState ( LOW );

  b2.attach ( 6, PIN_MODE );
  b2.interval (INTERVAL_IN_MS);
  b2.setPressedState ( LOW );

lcd.clear();
}

void loop() {

b1.update();
b2.update();

if (status == 0) // im Zustand 0
{
  if (b2.pressed()) // Falls down gedrückt wurde 
  {
    status = 1;
  }
}

else if (status == 1)
{
  if(millis()-last > 500)
  {
    position++;
    last = millis();
  }
  if(position == 16)
  {
      status = 2;
  }

  
  if(b1.pressed())
  {
    status = 4;
  }
}

else if (status == 3)
{ 
  if(millis()-last > 500)
  {
    position--;
    last = millis();
  }
  if(position == 0)
  {
      status = 0;
  }
  if (b2.pressed())
  {
    status = 4;
  }
}

else if(status == 2)
{
  if(b1.pressed())
  {
    status = 3;
  }

}

else if(status == 4){
  
  if(b1.pressed())
  {
    status = 3;
  }
  if(b2.pressed())
  {
    status = 1;
  }
}

lcd.setCursor(0,0);
lcd.print(status);
lcd.setCursor(0,1);
lcd.print(position);
lcd.print(" ");

}