大家好,最近在研究在TMA570LS上用串口DMA传输方式收发数据,看前辈们用DMA传输都是定长传输的,DMA需要定长才能产生接收或发送中断,我想问的是如何接收或发送可变长度的数据呢?
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大家好,最近在研究在TMA570LS上用串口DMA传输方式收发数据,看前辈们用DMA传输都是定长传输的,DMA需要定长才能产生接收或发送中断,我想问的是如何接收或发送可变长度的数据呢?