2

#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
#define butl 3
#define butp 5
#define led 6
LiquidCrystal_I2C  lcd(0x27,2,1,0,4,5,6,7);
int button = 0;
int num;
int nume;
int state;
void setup()
{

  pinMode(butl,INPUT);
  pinMode(butp,INPUT);

  pinMode(led,OUTPUT);
  digitalWrite(butl,HIGH);
  digitalWrite(butp,HIGH);
  Serial.begin(9600);

  lcd.begin (16,2); // wyswietlacz 2x16
  lcd.setBacklightPin(3,POSITIVE);
  lcd.setBacklight(HIGH);
  lcd.clear();
  lcd.home();
  lcd.print("Technikum nr 1");


}

void loop()
{
bool  butlst=digitalRead(butl);
bool  butpst=digitalRead(butp);

button = 0;
if (butlst == 0){
  button=1;
}

if (butpst == 0){
  button=2;
}



switch(button){
  case 1:
 num++;
 if(num>2){
  num=0;
  }
      break;
  case 2:
 nume++;
 if(nume>1){
  nume=0; }
      break;


}
switch(num){
  case 0:
  break;
  case 1:
  delay(250);
  break;
  case 2:
  delay(750);
  break;
}
switch(nume){
  case 0:
  lcd.scrollDisplayLeft();
  break;
  case 1:
  lcd.scrollDisplayRight();
  break;
}


delay(250);

}