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与该帖子一致,采用DMA与Timeout中断接收不定长数据。目前FiFO触发配置为>=2。发送的字符串为2的倍数时,不会产生Timeout中断,如果非2的倍数,则由于fifo不为空,产生timeout中断。请问,在DMA触发后,FIFO为空时,此时无法产生Timeout中断,如何判断传输完成?