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How to associate a Hardware Event with a DMA request line?

Jeffrey69080
Prodigy 90 points

I have  a DMA channel to move the mibspi  receive RAM data to CPU RAM.

I want to used the receive ram full event to trigger the DMA request . BUT...

In DMA , only set a channel associate with a request line , and DMA request can set "Software request" \ " Hardware request" or "Triggered by other control packet".

I think the mibspi receive ram full event is hardware request , any other register can I set ,if I want to associate the full event to dma request?