Linked list GPDMA port configuration mismatch

[mkrk]

I'd like to report one issue with DMA Linked List editor. I need to do PSSI reception with GPDMA using linked list on STM32H7R3L8H6H. CubeMX is version v6.15.0 and CubeIDE is v1.19.0.

Based on reference manual (RM) and AN5593, the GPDMA ports 0 and 1 are both AHB ports, with port 0 being capable of direct access to APB peripherals. However, Linked list editor in CubeMX displays port options with wrong names:

I guess it follows HPDMA port naming. Maybe it should avoid naming at all or decide it based on the DMA channel option in the List editor.

It looks like a minor issue, but I happened to make opposite choice because memory is on AXI bus so for me it is yet another problem on the way of getting the whole thing working.

[Ghofrane GSOURI]

Hello @mkrk 

Your detailed explanation is much appreciated.

Issue has been raised to dev team for resolution.

Internal ticket number is 218536 

THX

Ghofrane

[mkrk]

Thanks @Ghofrane GSOURI 

There seems to be one more issue with Linked list editor. Now I picked source port 0 and destination port 1, saved IOC file and closed it. When re-opening IOC file and looking at Linked list editor, destination port is 0. I look at IOC file and see that there is no separate source and destination port parameter, but a single TransferAllocatedPortSrc which is zero. Here is a block of LinkedList parameters from IOC:

Linkedlist.MDMA_Channel0.GP_SW.0.BlkHWRequest=DMA_BREQ_SINGLE_BURST
Linkedlist.MDMA_Channel0.GP_SW.0.DataHandling=NONE
Linkedlist.MDMA_Channel0.GP_SW.0.DataSize=8192
Linkedlist.MDMA_Channel0.GP_SW.0.DestBurstLength=1
Linkedlist.MDMA_Channel0.GP_SW.0.DestDataWidth=DMA_DEST_DATAWIDTH_WORD
Linkedlist.MDMA_Channel0.GP_SW.0.DestInc=DMA_DINC_INCREMENTED
Linkedlist.MDMA_Channel0.GP_SW.0.Direction=DMA_PERIPH_TO_MEMORY
Linkedlist.MDMA_Channel0.GP_SW.0.DstAddress=0
Linkedlist.MDMA_Channel0.GP_SW.0.Instance=MDMA_Channel0
Linkedlist.MDMA_Channel0.GP_SW.0.LL_CIRCULARNODE=PSSI_DMA_LL_N1
Linkedlist.MDMA_Channel0.GP_SW.0.LL_MASTERDMA=GPDMA1
Linkedlist.MDMA_Channel0.GP_SW.0.LL_NAME=PSSI_DMA_LL
Linkedlist.MDMA_Channel0.GP_SW.0.LL_TYPE=CIRCULAR
Linkedlist.MDMA_Channel0.GP_SW.0.Mode=DMA_NORMAL
Linkedlist.MDMA_Channel0.GP_SW.0.NODE_NAME=PSSI_DMA_LL_N1
Linkedlist.MDMA_Channel0.GP_SW.0.RequestParameters=LL_NAME,LL_MASTERDMA,LL_TYPE,LL_CIRCULARNODE,NODE_NAME,BlkHWRequest,Requestforcodegen,Direction,SrcInc,DestInc,SrcDataWidth,DestDataWidth,SrcBurstLength,DestBurstLength,TransferAllocatedPortSrc,TransferEventMode,Mode,DataHandling,TriggerPolarity,SrcAddress,DstAddress,DataSize
Linkedlist.MDMA_Channel0.GP_SW.0.Requestforcodegen=GPDMA1_REQUEST_PSSI
Linkedlist.MDMA_Channel0.GP_SW.0.SrcAddress=(uint32_t)(&hpssi.Instance->DR)
Linkedlist.MDMA_Channel0.GP_SW.0.SrcBurstLength=1
Linkedlist.MDMA_Channel0.GP_SW.0.SrcDataWidth=DMA_SRC_DATAWIDTH_WORD
Linkedlist.MDMA_Channel0.GP_SW.0.SrcInc=DMA_SINC_FIXED
Linkedlist.MDMA_Channel0.GP_SW.0.TransferAllocatedPortsrc=DMA_SRC_ALLOCATED_PORT0
Linkedlist.MDMA_Channel0.GP_SW.0.TransferEventMode=DMA_TCEM_EACH_LL_ITEM_TRANSFER
Linkedlist.MDMA_Channel0.GP_SW.0.TriggerPolarity=DMA_TRIG_POLARITY_MASKED
Linkedlist.MDMA_Channel0.GP_SW.1.BlkHWRequest=DMA_BREQ_SINGLE_BURST
Linkedlist.MDMA_Channel0.GP_SW.1.DataHandling=NONE
Linkedlist.MDMA_Channel0.GP_SW.1.DataSize=8192
Linkedlist.MDMA_Channel0.GP_SW.1.DestBurstLength=1
Linkedlist.MDMA_Channel0.GP_SW.1.DestDataWidth=DMA_DEST_DATAWIDTH_WORD
Linkedlist.MDMA_Channel0.GP_SW.1.DestInc=DMA_DINC_INCREMENTED
Linkedlist.MDMA_Channel0.GP_SW.1.Direction=DMA_PERIPH_TO_MEMORY
Linkedlist.MDMA_Channel0.GP_SW.1.DstAddress=0
Linkedlist.MDMA_Channel0.GP_SW.1.Instance=MDMA_Channel0
Linkedlist.MDMA_Channel0.GP_SW.1.LL_CIRCULARNODE=PSSI_DMA_LL_N1
Linkedlist.MDMA_Channel0.GP_SW.1.LL_MASTERDMA=GPDMA1
Linkedlist.MDMA_Channel0.GP_SW.1.LL_NAME=PSSI_DMA_LL
Linkedlist.MDMA_Channel0.GP_SW.1.LL_TYPE=CIRCULAR
Linkedlist.MDMA_Channel0.GP_SW.1.Mode=DMA_NORMAL
Linkedlist.MDMA_Channel0.GP_SW.1.NODE_NAME=PSSI_DMA_LL_N2
Linkedlist.MDMA_Channel0.GP_SW.1.RequestParameters=LL_NAME,LL_MASTERDMA,LL_TYPE,LL_CIRCULARNODE,NODE_NAME,BlkHWRequest,Requestforcodegen,Direction,SrcInc,DestInc,SrcDataWidth,DestDataWidth,SrcBurstLength,DestBurstLength,TransferAllocatedPortSrc,TransferEventMode,Mode,DataHandling,TriggerPolarity,SrcAddress,DstAddress,DataSize
Linkedlist.MDMA_Channel0.GP_SW.1.Requestforcodegen=GPDMA1_REQUEST_PSSI
Linkedlist.MDMA_Channel0.GP_SW.1.SrcAddress=(uint32_t)(&hpssi.Instance->DR)
Linkedlist.MDMA_Channel0.GP_SW.1.SrcBurstLength=1
Linkedlist.MDMA_Channel0.GP_SW.1.SrcDataWidth=DMA_SRC_DATAWIDTH_WORD
Linkedlist.MDMA_Channel0.GP_SW.1.SrcInc=DMA_SINC_FIXED
Linkedlist.MDMA_Channel0.GP_SW.1.TransferAllocatedPortsrc=DMA_SRC_ALLOCATED_PORT0
Linkedlist.MDMA_Channel0.GP_SW.1.TransferEventMode=DMA_TCEM_EACH_LL_ITEM_TRANSFER
Linkedlist.MDMA_Channel0.GP_SW.1.TriggerPolarity=DMA_TRIG_POLARITY_MASKED
Linkedlist.MDMA_Channel0.Request0=GP_SW
Linkedlist.MDMA_Channel0.Request1=GP_SW
Linkedlist.MDMA_Channel0.RequestsNb=2
Linkedlist.RequestSet0=MDMA_Channel0
Linkedlist.RequestSetsNb=1

Generated code (linked_list.c) also puts both to zero:

pNodeConfig.Init.TransferAllocatedPort = DMA_SRC_ALLOCATED_PORT0|DMA_DEST_ALLOCATED_PORT0;

[Ghofrane GSOURI]

Hello @mkrk 

Thank you very much for your valuable contributions.

A separate ticket has been submitted to the development team to address and correct this behavior

Internal ticket number is 218572 .

THX

Ghofrane