//#include <Bonezegei_LCD2004_I2C.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define but_left 6
#define but_right 5
#define but_up 7
#define but_down 4
int8_t count =0;
uint8_t clickUp;
uint8_t clickDown;
uint8_t lastStateUp = HIGH;
uint8_t lastStateDown = HIGH;

LiquidCrystal_I2C lcd(0x27, 20, 4); // I2C address 0x27, 20 column and 4 rows

void setup() {
  pinMode(but_left, INPUT_PULLUP);
  pinMode(but_right, INPUT_PULLUP);
  pinMode(but_up, INPUT_PULLUP);
  pinMode(but_down, INPUT_PULLUP);
  lcd.init(); //initialize the lcd
  lcd.backlight(); //open the backlight 
  lcd.setCursor(1, 0);
  lcd.print("Hello World!");
  //lcd.setCursor(0, 0);
  //lcd.print(">");

}

void loop() {
  bool butStateLeft = digitalRead(but_left);
  bool butStateRight = digitalRead(but_right);
  bool butStateUp = digitalRead(but_up);
  bool butStateDown = digitalRead(but_down);
  if (butStateUp == LOW && lastStateUp == HIGH){
    clickUp = true;
  }
    if (butStateDown == LOW && lastStateDown == HIGH){
    clickDown = true;
  }

  if (clickUp){
    count --;
    lcd.clear();
    lcd.setCursor(0, count);
    lcd.print(">");
    if (count == -1) count=4;
    clickUp = false;
  }
    if (clickDown){
    count --;
    lcd.clear();
    lcd.setCursor(0, count-1);
    lcd.print(">");
    if (count ==4) count=0;
    clickUp = false;
  }


  lastStateUp = butStateUp;
  lastStateDown = butStateDown;
 // if (butStateUp == HIGH && lastStat == HIGH){
  
}