void getEEPROMContent() {
  int eeprom_address = 0;
  byte eeprom_value;
  Serial.println(F("EEPROM-Data:"));
  Serial.println(F("ADDR\t0\t1\t2\t3\t4\t5\t6\t7"));
  int col = 0;
  for (int i = 0; i < EEPROM.length(); i++) {
    eeprom_value = EEPROM.read(eeprom_address);
    if (col == 0) {
      Serial.print(eeprom_address);
      Serial.print("\t");
    }
    Serial.print(eeprom_value, DEC);
    Serial.print("\t");
    eeprom_address = eeprom_address + 1;

    if (col >= 7) {
      col = 0;
      Serial.println();
    }
    else col++;
  }
}

void formatEEPROMArea(int _from, int _len) {
  int _to;
  _to = _from + _len - 1;
  Serial.print(F("EEPROM - formatting area from "));
  Serial.print(_from);
  Serial.print(F(" to "));
  Serial.println(_to);
  for (int i = _from; i <= _to; i++) {
    Serial.print(".");
    EEPROM.update(i, 0);
  }
  Serial.println("DONE");
}


void formatEEPROM_AllData() {
  for (byte i = 0; i < COUNTERS_COUNT; i++) {
    formatEEPROMArea(eeprom_addr_area_start_currentReadingImpulses[i], eeprom_addr_area_length_currentReadingImpulses[i]);
    formatEEPROMArea(eeprom_addr_currentReading[i], 4);
    formatEEPROMArea(eeprom_addr_currentReading_backup1[i], 4);
    formatEEPROMArea(eeprom_addr_currentReading_backup2[i], 4);
  }
}


void formatEEPROMAreaOfCounter(byte _cNum) {
  if (_cNum >= 0 && _cNum < COUNTERS_COUNT) {
    formatEEPROMArea(eeprom_addr_currentReading[_cNum], 4);
    formatEEPROMArea(eeprom_addr_currentReading_backup1[_cNum], 4);
    formatEEPROMArea(eeprom_addr_currentReading_backup2[_cNum], 4);
    formatEEPROMArea(eeprom_addr_area_start_currentReadingImpulses[_cNum], eeprom_addr_area_length_currentReadingImpulses[_cNum]);
    eeprom_nextoffset_currentReadingImpulses[_cNum] = 0;
    eeprom_writecounter_currentReadingImpulses[_cNum] = 1;
  }
}