//------- - 15.04.2021
// BASIC PROGRAM - NUMBERS
//-------
#include <Wire.h> 
//--------------- VARIABLES USED IN MODULES - MUST BE
char pit = "";
int spd = 8;
//---------------
int count = 0;

void setup() { 
  //----------- START I2C COMMUNICATION - MUST BE
  Wire.setClock(100000);  
  Wire.begin();  // join i2c bus  
  //----------- 
  begin_def(); // start screen
}

void loop() {
 ispis(String(count)+";2;1;3");
 count += 1;
 delay(1000);
 ispis("CLS"); 
}

//------------------------------------------------------------  SETTINGS
void begin_def() // all settings you need in program
{
    ispis("RST"); 
    delay(200);
    ispis("CLS"); 
    delay(500);    
}

//------------------------------------------------------------ MAIN MODULE
void ispis(String poruka)
{
  Serial.println(poruka);
  poruka = poruka + ";";
  int duz = poruka.length();
  if (duz > 30)
  {
    String por1 = poruka.substring(0,30)+"+";
    char dio1[31];
    por1.toCharArray(dio1,duz);
    Wire.beginTransmission(0x11);
    Wire.write(dio1);
    Wire.endTransmission();
    String por2 = poruka.substring(30);
    duz = por2.length();
    char dio2[duz];
    por2.toCharArray(dio2,duz);
    Wire.beginTransmission(0x11);
    Wire.write(dio2);
    Wire.endTransmission();
    delay(duz*spd);
  }
  else
  {
    char copy[duz];    
    poruka.toCharArray(copy,duz);
    Wire.beginTransmission(0x11);
    Wire.write(copy);
    Wire.endTransmission();
    delay(duz*spd);
  }     
}