serial_driver.py 文件源码

def setDeviceID(dev, id):
        if id < 0 or id > 255:
            raise ValueError("ID must be an unsigned byte!")

        try:
            com = serial.Serial(dev, timeout=5)

            packet = DriverSerial._generateHeader(CMDTYPE.SETID, 1)
            packet.append(id)
            com.write(packet)

            resp = com.read(1)
            if len(resp) == 0:
                DriverSerial._comError()
            else:
                if ord(resp) != RETURN_CODES.SUCCESS:
                    DriverSerial._printError(ord(resp))

        except serial.SerialException:
            log.error("Problem connecting to serial device.")
            raise IOError("Problem connecting to serial device.")