#include <Adafruit_LiquidCrystal.h>

unsigned long previousMillis = 0;

bool stav = true;
bool striedanieretazca=true;

String retazec1 ="SPS IT IG";
String retazec2 ="TVRDOSIN";

Adafruit_LiquidCrystal lcd(0);

/*byte customChar0[8] = {
	0b01010,
	0b00100,
	0b00110,
	0b01000,
	0b00100,
	0b00010,
	0b01100,
	0b00000
};
byte customChar1[8] = {
	0b00011,
	0b00000,
	0b00100,
	0b00100,
	0b00100,
	0b00100,
	0b00100,
	0b00000
};*/

void setup() {
lcd.begin(16, 2);
lcd.setBacklight(HIGH);
Serial.begin(9600);
}


void loop() {
unsigned long currentMillis = millis();
if(currentMillis - previousMillis >=2000){
previousMillis = currentMillis;
  stav=!stav;
  lcd.clear();
}
(stav)?zobraz1():zobraz2();

if (Serial.available()>0) {
	String novytext=Serial.readString();
	novytext.trim();
 (striedanieretazca)?retazec1=novytext:retazec2=novytext;
 striedanieretazca=!striedanieretazca;
}
}


void zobraz1()
{
lcd.setCursor(0,0);
lcd.print(retazec2);
lcd.setCursor(16-retazec1.length(),1);
lcd.print(retazec1);
}

void zobraz2()
{
lcd.setCursor(16-retazec2.length(),0);
lcd.print(retazec2);
lcd.setCursor(0,1);
lcd.print(retazec1);
}