DM8148和DM8168 EDMA3 源地址和目标地址有没有字节对齐要求?
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你好,
在TRM里面,你可以找到下面的信息。
8.4.3.2.2 Channel Source Address (SRC)
The 32-bit source address parameter specifies the starting byte address of the source. For SAM in increment mode, there are no alignment restrictions imposed by EDMA3. For SAM in constant addressing mode, you must program the source address to be aligned to a 256-bit aligned address (5 LSBs of address must be 0).
你好,我在使用DM8168的EDMA传输数据到GPMC接口上,GPMC端的地址模式设置为INCR,GPMC能接收到数据,但是速度上不去;GPMC端的地址模式设置为FIFO,却发现数据并没有进行传输。
请问这个问题该如何解决呢??