DMA2D throws configuration error

[VLesc.1]

Hello!

We are use STM32H747 and TouchGFX. We are need to use DMA2D. But we have issue with mode DMA2D_R2M.

Our configuration

  hdma2d.Instance = DMA2D;
  hdma2d.Init.Mode = DMA2D_R2M;
  hdma2d.Init.ColorMode = DMA2D_OUTPUT_ARGB8888;
  hdma2d.Init.OutputOffset = 0;
 
  if (HAL_DMA2D_Init(&hdma2d) != HAL_OK)
  {
      while (1);
  }
 
  if (HAL_DMA2D_ConfigLayer(&hdma2d, 1) != HAL_OK)
  {
      while (1);
  }

Our test

NVIC_EnableIRQ(DMA2D_IRQn);
 
HAL_DMA2D_Start_IT(&hdma2d, 0x12345678, 0xD0165800, 640, 572);

In this case we have callback from DMA with configuration error.

For mode DMA2D_R2M - all Ok.

Any ideas?

[Imen.D]

Hello @Community member​ ,

Have a look at the "Configuration error detection" subchapter of DMA2D chapter in the RM0399, and check with the condition and configuration that you have.

Hope this helps you :smiling_face_with_smiling_eyes: !

Please mark my answer as best by clicking on the "Select as Best" button if it helped.

Imen

[VLesc.1 · Accepted solution]

Thanks for answer!

But I found that for hdma2d.Init.Mode = DMA2D_R2M function HAL_DMA2D_Init (...) set into CR mode as 0x07, not 0x03.

I updated code for correct mode and now all works!

[Imen.D]

Thanks for sharing the update and your solution!

I'm really glad to know you overcame this problem :)

Imen