code: def setupSerialPort(loopback, port):
      
      if loopback:
          # Implement loopback software serial port
          testSerial = SerialTestClass()
          serialPort = testSerial.serialPort
      else:
          # TODO enable serial port command line options (keep simple for user!)
          serialPort = serial.Serial(port, 115200, timeout=0)
  
      return serialPort
docs: Sets up serial port by connecting to phsyical or software port.
  
      Depending on command line options, this function will either connect to a
      SerialTestClass() port for loopback testing or to the specified port from
      the command line option. If loopback is True it overrides the physical port
      specification.
  
      Args:
          loopback: argparse option
          port: argparse option
  
      Returns:
          serialPort: Pyserial serial port instance