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这个已经改过了,还是30多ms。另外,我发现genTwiddle函数好像有问题,应将n2-n2_start改为n2,这样每个核才能设置各自的旋转因子。还有我想问的是,dma的两个通道应该是同时传输的,但edmaTrigger函数的参数只有0通道?