       printError(command);
     }
     #endif
+    
     return;
   }
 

  op_amp_gain = new_gain;
  
  #ifdef HAS_EEPROM_BACKED_CALIBRATION_VALUES
  eeprom_write_float(&op_amp_gain_EEPROM_address, op_amp_gain);
  #endif
  
  return OK_NO_ERROR;  

    }
    #endif
    
    #ifdef HAS_CALIBRATE_LM317_VREF_COMMAND
    case 'r':
    {
