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how to setup SPORT DMA transfer triggered by software?not automatical transfer.

  • hi Kinhome:

    SPORT'S DMA can be triggered by software instruction or in an ISR, even in an ISR, it is also trigger by your code when something happen or some condition satisfied, not really automatically.

    DMA should have an enable bit to start it.

    But to save the interruption to the core, DMA's start or stop should be set automatically in an ISR.