serial_pm.py 文件源码

def __init__(self,
                 serialdevice,
                 configuration,
                 power_control=DTR_ON,
                 scan_interval=0):
        """Initialize the data collector based on the given parameters."""

        self.record_length = configuration[RECORD_LENGTH]
        self.start_sequence = configuration[STARTBLOCK]
        self.byte_order = configuration[BYTE_ORDER]
        self.multiplier = configuration[MULTIPLIER]
        self.timeout = configuration[TIMEOUT]
        self.scan_interval = scan_interval
        self.listeners = []
        self.power_control = power_control
        self.sensordata = {}
        self.config = configuration
        self.data = None
        self.last_poll = None
        self.start_func = None
        self.stop_func = None

        self.ser = serial.Serial(port=serialdevice,
                                 baudrate=configuration[BAUD_RATE],
                                 parity=serial.PARITY_NONE,
                                 stopbits=serial.STOPBITS_ONE,
                                 bytesize=serial.EIGHTBITS)

        # Update date in using a background thread
        if self.scan_interval > 0:
            thread = threading.Thread(target=self.refresh, args=())
            thread.daemon = True
            thread.start()