protocol.py 文件源码

def connect(self):
        """
        ????? ??????????? ? ??????????.
        """

        if not self.connected:
            self.serial.port = self.port
            if not self.serial.isOpen():
                try:
                    self.serial.open()
                except serial.SerialException as exc:
                    raise excepts.NoConnectionError(
                        u'?? ??????? ??????? ???? {} ({})'.format(
                            self.port, exc
                        )
                    )

            for r in self.check(self.CHECK_NUM, True):
                if r:
                    self.connected = True
                    return
            else:
                self.serial.close()
                raise excepts.NoConnectionError()