CubeMX not generating all needed DMA_HandleType inits when Circular SPI transfer is selected?

Question

Using STM32H533RE and successfully got SPI1 doing DMA transfers with HAL_SPI_Transmit_DMA() one shot at a time. As soon as I select Circular transfer and re-gen, the above function fails because a bunch of fields in my DMA_HandleType for that DMA channel are left at 0. I get a bunch of NEW inits for the DMA_NodeConfTypeDef. I decided to cut and paste the handful of items from the old HAL_SPI_MspInit() when in non-circular mode, and paste them into the circular config re-generated HAL_SPI_MspInit() and voila DMA SPI in circular mode works fine.  Is this a cube MX bug? Or am I missing something? See attached screenshots

Ghofrane GSOURI · Accepted Answer

Hello @devinw

I appreciate your contribution.

A ticket 182039 has been raised to dev team to fix this issue .

As a simple workaround , try to add the following line of code

handle_GPDMA1_Channel4.Init = NodeConfig.Init;

Here

 handle_GPDMA1_Channel4.Instance = GPDMA1_Channel4;

 handle_GPDMA1_Channel4.InitLinkedList.Priority = DMA_LOW_PRIORITY_HIGH_WEIGHT;

 handle_GPDMA1_Channel4.InitLinkedList.LinkStepMode = DMA_LSM_FULL_EXECUTION;

 handle_GPDMA1_Channel4.InitLinkedList.LinkAllocatedPort = DMA_LINK_ALLOCATED_PORT0;

 handle_GPDMA1_Channel4.InitLinkedList.TransferEventMode = DMA_TCEM_BLOCK_TRANSFER;

 handle_GPDMA1_Channel4.InitLinkedList.LinkedListMode = DMA_LINKEDLIST_CIRCULAR;

if (HAL_DMAEx_List_Init(&handle_GPDMA1_Channel4) != HAL_OK)

 {

 Error_Handler();

 }



if (HAL_DMAEx_List_LinkQ(&handle_GPDMA1_Channel4, &List_GPDMA1_Channel4) != HAL_OK)

 {

 Error_Handler();

 }



 __HAL_LINKDMA(hspi, hdmatx, handle_GPDMA1_Channel4);



if (HAL_DMA_ConfigChannelAttributes(&handle_GPDMA1_Channel4, DMA_CHANNEL_NPRIV) != HAL_OK)

 {

 Error_Handler();

 }



/* SPI1 interrupt Init */

 HAL_NVIC_SetPriority(SPI1_IRQn, 0, 0);

 HAL_NVIC_EnableIRQ(SPI1_IRQn);

/* USER CODE BEGIN SPI1_MspInit 1 */

 handle_GPDMA1_Channel4.Init = NodeConfig.Init;

/* USER CODE END SPI1_MspInit 1 */

 }

Ghofrane GSOURI · Answer

Hello @devinw First let me thank you for posting.I would appreciate it if you could share your IOC so that I can verify your configuration.I will be waiting for your feedback.THXGhofrane

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