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64个edma通道事件的实际意义



       EDMA                                                                       EDMA
        Channel          Event Name                  Event Description
          32                    GPINT0                    GPIO Interrupt 0 Event

          33                    GPINT1                    GPIO Interrupt 1 Event

          34                    GPINT2                    GPIO Interrupt 2 Event

          35                    GPINT3                    GPIO Interrupt 3 Event

 

上面的第32通道,和gpio interrupt0 event关联。是不是可以这么理解: 在edma的中断服务程序中, 事件和通道只是为了起判断作用,因为通常64个EDMA的通道,就只有一个中断入口;而 “Event Description”只是起描述的作用,并不能强行绑定emda通道号的作用。可以这么理解吗? 进一步说,如果针对mcbsp某端口进行edma操作,是不是64个通道中的任何一个通道都可以应用呢?