<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def start(self):
 """ Monitor the bus for events and handle them """

        print("Entering monitoring mode, press CTRL-C to quit")
        serial = self._connection.serial

        while True:
            serial.write(b"@R")
            length = int(serial.read(), 16)
            data = serial.read(length * 2)
            message = messages.parse(data)
            if not (self._options.filter and
                    message.entity and
                    message.entity in self._devices):
                logging.debug(" ".join(message.bytes))
            if not self._options.config or \
               message.entity is None or \
               message.entity in self._devices:
                continue

            print("New device found")
            ha_id = input("Enter home assistant unique ID: ")
            name = input("Enter name: ")
            self._add_device(scs_id=message.entity, ha_id=ha_id, name=name)