Diagnostika

int skupina1[] = {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1};
int skupina1Zapsana[20];
int skupina2[] = {0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1};
int skupina2Zapsana[20];


int dataPin = 6;
  int clockPin = 7;
  int latchPin = 8;
  byte data01 = B00000000;
  byte data02 = B00000000;
  byte data03 = B00000000;
  byte data11 = B00000000;
  byte data12 = B00000000;
  byte data13 = B00000000;


void setup() {
  Serial.begin(115200);

}

void loop() {
  diagnostikaShiftOut();

}

void diagnostikaShiftOut() {
  bool zapisNaDiagnostiku = false;

  for(int i=0; i<20; i++) {
    if(skupina1[i] != skupina1Zapsana[i]) {
      zapisNaDiagnostiku = true;
      if(i < 8) {
        bitWrite(data01, i, skupina1[i]);
      }
      else if(i > 7 && i < 16) {
        bitWrite(data02, i-8, skupina1[i]);
      }
      else if(i > 15 && i < 20) {
        bitWrite(data03, i-16, skupina1[i]);
      }
      skupina1Zapsana[i] = skupina1[i];
    }
    if(skupina2[i] != skupina2Zapsana[i]) {
      zapisNaDiagnostiku = true;
      if(i < 8) {
        bitWrite(data11, i, skupina2[i]);
      }
      else if(i > 7 && i < 16) {
        bitWrite(data12, i-8, skupina2[i]);
      }
      else if(i > 15 && i < 20) {
        bitWrite(data13, i-16, skupina2[i]);
      }
      skupina2Zapsana[i] = skupina2[i];
    }
  }
  if(zapisNaDiagnostiku == true) {
    digitalWrite(latchPin, LOW);
    shiftOut(dataPin, clockPin, LSBFIRST, data01);
    shiftOut(dataPin, clockPin, LSBFIRST, data02);
    shiftOut(dataPin, clockPin, LSBFIRST, data03);
    shiftOut(dataPin, clockPin, LSBFIRST, data11);
    shiftOut(dataPin, clockPin, LSBFIRST, data12);
    shiftOut(dataPin, clockPin, LSBFIRST, data13);
    digitalWrite(latchPin, HIGH);
  }

  printBinary(data01);
  printBinary(data02);
  printBinary(data03);
  Serial.println();
  printBinary(data11);
  printBinary(data12);
  printBinary(data13);
  Serial.println();
}

void printBinary(byte inByte) {
  for (int b = 7; b >= 0; b--) {
    Serial.print(bitRead(inByte, b));
  }
}