STemWin in landscape with Cube + STM32F429discovery

aki · ‎2014-04-16

Posted on April 16, 2014 at 11:37

I'm having problems to produce correctly working landscape LCD with STemWin and STM32F429 discovery. I'm using STemWin_HelloWorld application from STM32Cube_FW_F4_V1.1.0 as a base for my tests. I don't need to rotate screen during run-time.

I have only changed display drivers in LCDConf from GUIDRV_LIN_32 to GUIDRV_LIN_OSY_32 to produce landscape screen. This results correctly oriented screen with correctly printed texts with GUI_DispStringAt(). But background and painting functions like GUI_FillCircle() will create three striped areas on top of each others. Looks like a synchronisation problem but haven't manage to sort it out. Furthermore wondering why texts are working correctly and drawings not. Changing physical size to 240x240 fixes the problem - except it's not full screen and 320 width.

https://scontent-a-ams.xx.fbcdn.net/hphotos-ash3/t1.0-9/10246499_672755232786025_2797032601679556975_n.jpg

.

Application code for this image:

GUI_SetFont(&GUI_Font20_1);

GUI_DispStringAt(''Hello world!'', (LCD_GetXSize()-100)/2, (LCD_GetYSize()-20)/2);

GUI_DispStringAt(''0'', 0, 0);

GUI_DispStringAt(''1'', 100, 0);

GUI_DispStringAt(''2'', 200, 0);

GUI_DispStringAt(''3'', 300, 0);

GUI_DispStringAt(''A'', 0, 100);

GUI_DispStringAt(''B'', 0, 200);

GUI_DispStringAt(''C'', 0, 300);

GUI_FillCircle(100, 100, 10);

Any ideas to fix this problem?

Montassar BEN ROMDHANE_O · ‎2014-05-30

Posted on May 30, 2014 at 11:58

Hi,

Can you please forward us the Segger's forum post ?

With regards.

Noppe.Jack · ‎2014-05-30

Posted on May 30, 2014 at 13:35

Hi,

Sorry for not including it in the previous post 🙂 Here it is ...

http://i111.indigo.fastwebserver.de/index.php?page=Thread&postID=5860#post5860

Thanks for looking into this,

J

Noppe.Jack · ‎2014-06-16

Posted on June 16, 2014 at 15:59

Hi 🙂 Have you by any chance had an opportunity to look into this some more?

Tx.

mats23 · ‎2014-08-07

Posted on August 07, 2014 at 22:53

Hi,

has there been any progress on this?

/M

Noppe.Jack · ‎2014-08-15

Posted on August 15, 2014 at 20:31

I just updated to the latest version of STM32Cube (which use Stegger 524b libraries) and the problem persists.

Out of desperation, I implemented

HAL_LTDC_ErrorCallback(LTDC_HandleTypeDef *hltdc)

and I get

hltdc->ErrorCode == HAL_LTDC_ERROR_FU (Frame Under run)

This error happens on the line:

HAL_LTDC_ConfigLayer(&hltdc, &layer_cfg, LayerIndex); //when LayerIndex = 0

In : LCD_LL_LayerInit(uint32_t LayerIndex)

Of: LCDConf_stm32f429i_disco_MB1075.c

Is the frame under run error a red-herring, and if not, any suggestions on configuration variables that would help correct this?

franck23 · ‎2015-05-06

Posted on May 06, 2015 at 11:02

Hello

Any update on the landscape bug?

I have seen more threads reporting this issue, but we still don't know what the problem is.

From Heisenberg answer, I do understand that the landscape mode is not possible (available?).

It would be interesting to know where the problem comes from, so when starting a new project we can choose the right hardware and firmware to avoid getting stuck with a portrait orientation.

Is it related to the ST implementation of emWin? Or is it the LCD driver?

Would it be the same problem with a different LCD controller?

etc...

Thanks for any hint,

Franck.

eraycanli · ‎2015-09-28

Posted on September 28, 2015 at 15:11

any solution to this problem so far??

reserv70 · ‎2015-10-01

Posted on October 01, 2015 at 19:54

Hi! I try to change orentation of diplay in stm32f429-disco but take same bag (atrifaction) on display.

What is the problem?? I have last version of HAL. How can I solve this problem? It is library problem or driver problem?

alessandro23 · ‎2016-03-05

Posted on March 05, 2016 at 15:20

Hello,

I experimented quite the same problem.

While trying to rotate the screen on the STM32F429Disco with the GUIDRV_LIN_OSX_32 driver, images appear overlapped and/or with strange patterns in some zones.

I was able to solve the problem by changing code in the file â€œ

LCDConf_stm32f429i_disco_MB1075.c

â€�. Iâ€™m not sure, but I think there is a bug there.

Here is my solution. In function â€œLCD_X_DisplayDriverâ€�, I changed the following lines:

case LCD_X_SETSIZE:

GUI_GetLayerPosEx(LayerIndex, (int*)&xPos, (int*)&yPos);

layer_prop[LayerIndex].xSize = ((LCD_X_SETSIZE_INFO *)pData)->xSize;

layer_prop[LayerIndex].ySize = ((LCD_X_SETSIZE_INFO *)pData)->ySize;

HAL_LTDC_SetWindowPosition(&hltdc, xPos, yPos, LayerIndex);

break;

to the followings:

case LCD_X_SETSIZE:

GUI_GetLayerPosEx(LayerIndex, (int*)&xPos, (int*)&yPos);

if( LCD_GetSwapXYEx(LayerIndex) )

{

layer_prop[LayerIndex].xSize = ((LCD_X_SETSIZE_INFO *)pData)->ySize;

layer_prop[LayerIndex].ySize = ((LCD_X_SETSIZE_INFO *)pData)->xSize;

}

else

{

layer_prop[LayerIndex].xSize = ((LCD_X_SETSIZE_INFO *)pData)->xSize;

layer_prop[LayerIndex].ySize = ((LCD_X_SETSIZE_INFO *)pData)->ySize;

}

HAL_LTDC_SetWindowPosition(&hltdc, xPos, yPos, LayerIndex);

break;

Now everything is correctly displayed.

Hope this will help other people to correct their problem.

Kind Regards,

Alessandro