__init__.py 文件源码

def get_serial():
    s = serial.Serial(PORT)
    s.baudrate = BAUD
    s.parity   = serial.PARITY_NONE
    s.databits = serial.EIGHTBITS
    s.stopbits = serial.STOPBITS_ONE
    s.timeout = 0 # non blocking mode

    s.close()
    s.port = PORT
    s.open()
    return s