code: function writeToLogFile(rawPacket, parsedPacket) {
    if (!debugMode) { return; }
  
    var now = new Date().toUTCString();
  
    fs.appendFile(config.debugRawDataFile, 'Package received at ' + now + ':\n' + rawPacket + '\n\n', function (err) {
      if (err) {
        console.error('Could not write raw package to ' + config.debugRawDataFile);
      }
    });
  
    fs.appendFile(config.debugParsedDataFile, 'Package received at ' + now + ':\n' + JSON.stringify(parsedPacket, true, 4) + '\n\n', function (err) {
      if (err) {
        console.error('Could not write parsed package to ' + config.debugParsedDataFile);
      }
    });
  }
docs: Write raw and parsed data to log file for debugging purposes
  
  @param rawPacket : Raw packet as received via the serial port
  @param parsedPacket : Parsed packet object