artifacts in 32-bit SDRAM

[EEuge]

Helllo!

I use development board with F769 and 32-bit sdram

I see artifacts - stripes on both sides of pictures

Artifacts a dissapear when I use 16 bit SDRAM mode. Artifacts are disappear then I use RBG565

But I want 32-bit SDRAM and RGB888

What I try to do - I try to work without touchGFX

void STFT_FillRectangle(uint16_t x1, uint16_t y1,
											uint16_t x2, uint16_t y2, uint32_t color)
{
	#define swap(a,b) {int16_t t=a;a=b;b=t;}
 
	if(x1>x2) swap(x1,x2);
	if(y1>y2) swap(y1,y2);
	uint32_t addr=0;
	SCB_CleanDCache();
	addr = 0xD0000000 + 3*(y1*hltdc.LayerCfg[0].ImageWidth+x1);
	hdma2d.Init.Mode = DMA2D_R2M;
		hdma2d.Init.OutputOffset = hltdc.LayerCfg[0].ImageWidth - (x2-x1);
	if(HAL_DMA2D_Init(&hdma2d) == HAL_OK)
	{
		if(HAL_DMA2D_Start_IT(&hdma2d, color, addr,	x2-x1, y2-y1) == HAL_OK)
		{
			HAL_DMA2D_PollForTransfer(&hdma2d, 10);
		}
	}
	SCB_InvalidateDCache();
 
}

But artifacts (stripes) still present.

What can I see in memory, when I try to fill by color 0x0000FF

First bytes are broken

Help me!

P.S. IMPORTANT! These errors I see when I use DMA2D.

If I write and read to SDRAM without DMA2D - all OK.

[Tesla DeLorean]

I wouldn't use SCB_InvalidateDCache() blindly, use the by address version if you must.

Shouldn't need for DMA Read from memory.

[EEuge]

Hm... I can't understand you.

Can you say in other words?

Why not need DMA? DMA is used in TOuchGFX.

SCB_InvalidateDCache()  - is used in touchgfx library in file "STM32DMA......"

[EEuge]

No answers?