Problem in StemWin driver in DMA2D_FillBuffer Method

[jones.david]

Posted on July 27, 2015 at 15:03

Problem in StemWin driver in DMA2D_FillBuffer Method

I am developing a board STM32F429 with a 5 inch LCD(800x480), I init LCD With Setting LTDC Without Stem win and successfully can see background Color in LCD(RED,Blue or Green) then in next Step i try to Set GUI Driver (Stem win) for my Board

i copy GuiDriver in One of St Application Project and then change LTDC Settings with my self(GPIO, Timing and Polarity).

i then change LCD xSize and ySize in driver with mine and then change

(my SDRAM is bank2 32MB RAM)

LayerAddress0=0xd0000000

LayerAddress1=0xd1000000

my problem is when (Gui_Init()) function is executed the Program goes to DMA2D_FillBuffer method and never finishes last line ''while'' Statement(it's a wait function until transfer via dma2d is complete)

Any idea about problem?

#stemwin #dma2d_fillbuffer #dma2d #ldtc #stemwin

[jones.david]

Posted on July 28, 2015 at 06:58

Solved

[Amel NASRI]

Posted on July 28, 2015 at 12:20

Hi jones.david.009,

The idea behind the STM32 forum (and any other forum I think) is to look for help and share experiences/solutions.

So it will be interesting if you can let other users know how you resolved your issue. It may be helpful for someone else facing same issue.

-Mayla-

[tamilselvansubramani1]

Posted on November 18, 2015 at 16:06

Hi jones.david,

I am facing the same issue.

I configured the lcd and i can see the Background Color but when i integrate with STemwin  calling  

Gui_Init()) function. it goes to DMA2D_FillBuffer() and then to NMI_Handler.Can you share your solution.

[tamilselvansubramani1]

Posted on November 19, 2015 at 10:17

Hi, 

The issue is solved.

I faced the memory issue since i am using ext Ram (SDRAM) for code,stack,heap and text and  also using the same memory region for ldtc (STemwin)GUI start address so I can't able to execute STenwim library function.