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Uwe Bonnes
Uwe Bonnes
Chief
July 6, 2018
Question

DMA MEN2MEN and DMAMUX

  • July 6, 2018
  • 1 reply
  • 439 views
Posted on July 06, 2018 at 11:29

Hello,

is the DMAMUX somehow involved when doing DMA MEM2MEM transfers? Is the value in the DMAMUX channel corresponding to the selectedMEM2MEM DMA channel irrelevant or must it be zero? I did not see MEM2MEN mentioned in the DMAMUX chapter of RM0432.

    This topic has been closed for replies.

    1 reply

    Imen.D
    ST Technical Moderator
    July 9, 2018
    Posted on July 09, 2018 at 17:29

    Hello

    Bonnes.Uwe

     ,

    DMAMUX is only for peripherals and not memory to memory.

    When a channel of DMA1 is programmed with DMA_CCRx.MEM2MEM=1, there is no hardware peripheral request.

    So,

     DMAMUX is not involved. 

    With Regards,

    Imen

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