def __init__(self, port, baudrate):
     # Stream.__init__( self )
     # self.am = Serial( **kw )
     #self.am.open() # Seems to cause "permission denied" with PySerial 2.x
     self.am = AM(SerialTOS(port, baudrate), serialStreamProcessorHook)
     self.handlersList = []
     t = Thread(target=self.startService)
     t.setDaemon(True)
     t.start()
     # t.join(5)
     self.servico = t
     self.msg = ''
     self.msgId = 1
     self.leitura = deque(maxlen=4)