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TMS570LS1227 的SCI multi-buffer 使用中的问题

请教:

        sci的buffer设置成8个字节的缓存,必须收满8个字节,sci标志位才会置位。测试过程中发现,如果buffer已经有2个字节数据时,以后每次都发送8个字节的协议报文,那么接收到的数据始终会错位两个字节,请问能否通过寄存器,清除buffer中的计数器,让他重新开始计数?