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C6748 EDMA3通道设置

根据手册spruh79a.pdf中16.6节的描述:1.初始化DMA通道的步骤e:队列设置,我使用了DMA通道,不太明白怎么设置DMAQNUM,比如我使用GPIO6【8】作为触发事件,这里的DMAQNUM该怎么设置,总共有是个DMAQNUM寄存器,这些寄存器与事件的对应关系不太明白。