serial_connection.py 文件源码

def __init__(self, port, baud_rate, terminal=None, reset=False):
        Connection.__init__(self, terminal)

        self._port = port
        self._baud_rate = baud_rate

        try:
            self._serial = serial.Serial(None, self._baud_rate, timeout=0, write_timeout=0.2)
            self._serial.dtr = False
            self._serial.rts = False
            self._serial.port = port
            self._serial.open()
            if reset:
                self._serial.rts = True
                time.sleep(0.1)
                self._serial.rts = False
                x = ""
                while not x.endswith(">>>"):
                    x += self._serial.read().decode('utf-8', errors="ignore")
            self.send_kill()
        except (OSError, serial.SerialException) as e:
            self._serial = None
            return
        except Exception as e:
            return

        self._reader_thread = Thread(target=self._reader_thread_routine)
        self._reader_thread.start()