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S32K DMA

Question asked by Koorosh Hajiani on Jun 6, 2017
Latest reply on Jun 6, 2017 by Daniel Martynek

Hi,

According to the reference manual (S32K144) the clock source for the DMA module is System Clock which is not gated via PCC, and yet if I comment the following line out,  the code doesn't work.

 

PCC->PCCn[PCC_DMA0_INDEX] |= PCC_PCCn_CGC_MASK; // CGC=1: Clock enabled for DMA0

So what is going on here?

even in the design studio debugger's  PERIPHERAL REGISTER view, PCC_DMA doesn't exist. This is a bit confusing .

In one of the S32K144.H variant PCC_DMA0_INDEX is defined as 8. 

BUT AS I MENTIONED BEFORE  there is no reference to this  in the user manual or anywhere. I may be missing something.

Can someone clarify please.

 

Thanks,

Koorosh Hajiani

248-778-6396

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