DMA MEN2MEN and DMAMUX

[Uwe Bonnes]

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.

[Imen.D]

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