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同一个发送类型的message obj，我需要更新它的数据域以及仲裁域（CAN ID）。我在官方提供的driverlib库中有发现CAN_sendMessage这个函数接口可以用来更新一个message obj的数据域，没有找到更新仲裁域的接口，请问怎么做？再去调用CAN_setupMessageObject吗？因为发送message时需要经常修改数据域和仲裁域，每次发送都调用CAN_setupMessageObject，感觉时间成本会高
