def do_serial(self, p):
		"""Set the serial port, e.g.: /dev/tty.usbserial-A4001ib8"""
		try:
			self.serial.port = p
			self.serial.open()
			print 'Opening serial port: %s' % p
		except Exception, e:
			print 'Unable to open serial port: %s' % p
Set the serial port, e.g.: /dev/tty.usbserial-A4001ib8