   Serial.begin(19200);
 
 #if INIT_EEPROM
-  Serial.printf(F("Erasing EVERYTHING in EEPROM!\n"));
+  Serial.print(F("Erasing EVERYTHING in EEPROM!\n"));
   initialize_eeprom();  // WARNING! Destroys the EEPROM stored values
 #endif
 

/* restart the Teensy, without invoking bootloader. */
void restart(void)
{
  Serial.printf(F("Restarting ...\n"));
  delay(500);
  WRITE_RESTART(0x5FA0004);  
}

  pinMode(mc_Brightness, OUTPUT);
  pinMode(mc_Contrast, OUTPUT);

  // initialize the display
  lcd.begin(NumCols, NumRows);      // define display size
  lcd.noCursor();
  lcd.clear();

  // get state back from EEPROM, set display brightness/contrast
  restore_from_eeprom();
  analogWrite(mc_Brightness, 0);    // display off while initializing
  analogWrite(mc_Contrast, LcdContrast);

  // create underlined space for frequency display
  lcd.createChar(SpaceChar, sel_digits[SpaceIndex]);
