DMA2D

[nsabo.1]

Hi, I have initialized 1 layer in 800 * 480 resolution, and I also I have initialized DMA2D for this layer. I got 2 problems:

1- when it loads my logo , I see some lines which I can't understand how they come!!

for this: some horizontal lines appeared on my back ground just in logo resolution and for this I checked my sdram configuration and LTDC initialization.

I use F429ZGT6.

2- now I want to clear the LCD and loads it with six ball images in 90 * 86 resolution...

but it doesn't show anything....

Can some one help me?

What should I do to show 6 balls current layer.

here is my code:

// enable layer 1 ----> configuration in Reg_setup.h

LTDC_Cmd(ENABLE);

LTDC_LayerCmd(LTDC_Layer1, ENABLE); 

LTDC_ReloadConfig(LTDC_IMReload); 

// DMA2D initialization:

DMA2D_InitTypeDef DMA2D_InitStruct;

DMA2D_FG_InitTypeDef DMA2D_FG_InitStruct;

DMA2D_BG_InitTypeDef DMA2D_BG_InitStruct;

 DMA2D_DeInit();  

 DMA2D_InitStruct.DMA2D_Mode = DMA2D_M2M_BLEND;    

 DMA2D_InitStruct.DMA2D_CMode = DMA2D_RGB565;    

 DMA2D_InitStruct.DMA2D_OutputGreen = 0x00;    

 DMA2D_InitStruct.DMA2D_OutputBlue = 0x00;   

 DMA2D_InitStruct.DMA2D_OutputRed  = 0x00;         

 DMA2D_InitStruct.DMA2D_OutputAlpha = 255;      

 DMA2D_InitStruct.DMA2D_OutputMemoryAdd =SDRAM_START_ADR+ (800*130 * 2)+(220 *2);//(uint32_t)T;                                   

DMA2D_FG_InitStruct.DMA2D_FGO = 0x00 ;

 DMA2D_FG_InitStruct.DMA2D_FGMA =(uint32_t)T2;                           

DMA2D_FG_InitStruct.DMA2D_FGCM = CM_RGB565 ;

DMA2D_FG_InitStruct.DMA2D_FGPFC_ALPHA_MODE=COMBINE_ALPHA_VALUE;

// DMA2D_FG_InitStruct.DMA2D_FGPFC_ALPHA_VALUE = j ;

DMA2D_FG_InitStruct.DMA2D_FGC_BLUE = 0x00 ;

DMA2D_FG_InitStruct.DMA2D_FGC_GREEN = 0 ;

DMA2D_FG_InitStruct.DMA2D_FGC_RED = 0x00 ;

DMA2D_InitStruct.DMA2D_OutputOffset =800-340;        

 DMA2D_InitStruct.DMA2D_NumberOfLine = 240;     

 DMA2D_InitStruct.DMA2D_PixelPerLine = 340;

// logo 340*240 -----> in center & fading away

DMA2D_BG_InitStruct.DMA2D_BGO = 800-340 ;

 DMA2D_BG_InitStruct.DMA2D_BGMA =SDRAM_START_ADR + (800*130 * 2)+(220 *2);                             

DMA2D_BG_InitStruct.DMA2D_BGCM = CM_RGB565 ;

DMA2D_BG_InitStruct.DMA2D_BGPFC_ALPHA_MODE=REPLACE_ALPHA_VALUE ;

DMA2D_BG_InitStruct.DMA2D_BGPFC_ALPHA_VALUE = 255 ;

DMA2D_BG_InitStruct.DMA2D_BGC_BLUE = 0x00 ;

DMA2D_BG_InitStruct.DMA2D_BGC_GREEN = 0 ;

DMA2D_BG_InitStruct.DMA2D_BGC_RED = 0x00 ;

 DMA2D_Init(&DMA2D_InitStruct);  

DMA2D_FGConfig(&DMA2D_FG_InitStruct);

 DMA2D_BGConfig(&DMA2D_BG_InitStruct);

// DMA2D_Suspend(DISABLE);

// DMA2D_FGStart(ENABLE);

// DMA2D_BGStart(ENABLE);

 /* Start Transfer */ 

 DMA2D_StartTransfer();  

 /* Wait for CTC Flag activation */

 while(DMA2D_GetFlagStatus(DMA2D_FLAG_TC) == RESET){} 

for(i=0;i<=10;i++){

  j = 255- (25*i);

  DMA2D_FG_InitStruct.DMA2D_FGPFC_ALPHA_VALUE = j ;

  Delay_us(1000000);

DMA2D_Init(&DMA2D_InitStruct); 

DMA2D_FGConfig(&DMA2D_FG_InitStruct);

 DMA2D_StartTransfer();  

 /* Wait for CTC Flag activation */

 while(DMA2D_GetFlagStatus(DMA2D_FLAG_TC) == RESET){} 

LTDC_ReloadConfig(LTDC_IMReload); // logo must be refreshed 

}

// logo------> deactivated

DMA2D_Suspend(ENABLE);

// clear transfer complete flag

DMA2D_ClearFlag(DMA2D_FLAG_TC);

DMA2D_Suspend(DISABLE);

//*********************************************************************************

Delay_us(1000000);

// section 2:

LCD_Clear(LCD_COLOR_WHITE);

LTDC_Cmd(ENABLE);

LTDC_LayerCmd(LTDC_Layer1, ENABLE); 

LTDC_ReloadConfig(LTDC_IMReload); 

//

DMA2D_Suspend(DISABLE);

// DMA2D_StructInit(&DMA2D_InitStruct);

//

// DMA2D_DeInit();  

 DMA2D_InitStruct.DMA2D_Mode = DMA2D_M2M_BLEND;    

 DMA2D_InitStruct.DMA2D_CMode = DMA2D_RGB565;    

 DMA2D_InitStruct.DMA2D_OutputGreen = 0x00;    

 DMA2D_InitStruct.DMA2D_OutputBlue = 0x00;   

 DMA2D_InitStruct.DMA2D_OutputRed  = 0x00;         

 DMA2D_InitStruct.DMA2D_OutputAlpha = 255;      

 DMA2D_InitStruct.DMA2D_OutputMemoryAdd =0xC0000000; 

// ball 90*86

DMA2D_FG_InitStruct.DMA2D_FGO =0;

DMA2D_FG_InitStruct.DMA2D_FGMA =(uint32_t)_acSport;                           

 DMA2D_FG_InitStruct.DMA2D_FGCM = CM_ARGB8888 ;

 DMA2D_InitStruct.DMA2D_OutputOffset =800-90;        

 DMA2D_InitStruct.DMA2D_NumberOfLine = 86;     

 DMA2D_InitStruct.DMA2D_PixelPerLine = 90;

DMA2D_BG_InitStruct.DMA2D_BGO = 800-90 ;

 DMA2D_BG_InitStruct.DMA2D_BGMA =0xC0000000 ;                             

DMA2D_BG_InitStruct.DMA2D_BGCM = CM_RGB565 ;

DMA2D_BG_InitStruct.DMA2D_BGPFC_ALPHA_MODE=REPLACE_ALPHA_VALUE ;

DMA2D_BG_InitStruct.DMA2D_BGPFC_ALPHA_VALUE = 255 ;

DMA2D_BG_InitStruct.DMA2D_BGC_BLUE = 0x00 ;

DMA2D_BG_InitStruct.DMA2D_BGC_GREEN = 0 ;

DMA2D_BG_InitStruct.DMA2D_BGC_RED = 0x00 ;

 DMA2D_Init(&DMA2D_InitStruct);  

DMA2D_FGConfig(&DMA2D_FG_InitStruct);

 DMA2D_BGConfig(&DMA2D_BG_InitStruct);

// DMA2D_FGStart(ENABLE);

// DMA2D_BGStart(ENABLE);

 DMA2D_Suspend(DISABLE);

 /* Start Transfer */ 

 DMA2D_StartTransfer();  

 /* Wait for CTC Flag activation */

 while(DMA2D_GetFlagStatus(DMA2D_FLAG_TC) == RESET){}

LTDC_ReloadConfig(LTDC_IMReload); 

[MM..1]

Seems you miss how DMA2D works and how use it with LTDC .

And you dont show ltdc layer config...

Normal code is ��

... on gui start and all initialized
 
ClearScreen(); // dont required here is in init
SHowImage(image1,x,y); // struct with info and data
...
DMA is used in ClearScreen and in SHowImage ....