CubeMx 4.25 & STemWin & WM_MULTIBUF_Enable(1)

[Vitaliy Chernobay]

Posted on May 30, 2018 at 01:15

I make the small project for F746 Discovery with STemWin (small test window with button) for Keil

After the project is compiling & the start  - black screen.

void GRAPHICS_Init(void)

{/* Initialize the GUI */GUI_Init();

WM_MULTIBUF_Enable(1);

/* Enable the multi-buffering functionality */

/* Activate the use of memory device feature */

/* USER CODE BEGIN WM_SetCreateFlags *///WM_SetCreateFlags(WM_CF_MEMDEV);/* USER CODE END WM_SetCreateFlags */}

I am a comment line

//WM_MULTIBUF_Enable(1);

An image appears on the screen after this.

Why does not  WM_MULTIBUF_Enable(1)  work?

#stemwin #cubemx #multibuf

[Imen.D]

Posted on May 30, 2018 at 10:01

Hello

Chernobay.Vitali.002

,

May be this not related to WM_MULTIBUF_Enable (1) function! But is due to your configuration.

We will check your issue internally and come back to you asap.

With Regards,

Imen

[Imen.D]

Posted on May 30, 2018 at 10:10

Hi

Chernobay.Vitali.002

,

Please keep all posts in this discussion and do not duplicate the same question in other threads as

https://community.st.com/0D50X00009XkXi4SAF

With Regards,

Imen

[Vitaliy Chernobay]

Posted on May 30, 2018 at 12:02

Hello, Imen D

I made a standard project with the default F746Discovery board configuration from CubeMX.

I did not add anything to the project for Keil. I am the only press Build after a project generation from CubeMX.

�?�ou can easily check with a standard F746Discovery board.

[Nawres GHARBI]

Posted on May 31, 2018 at 10:19

Hi Vitaliy, 

after investigating your ioc I find some issues:

1- Screen height and width are wrong in layer and graphics config

2- LCD and DMA2D interrupts are set to 0 

Please find attached you ioc fixed

PS: if it doesn't work please add 'WM_Paint(pMsg->hWin);' in the user tag of  'case WM_INIT_DIALOG:' in DLG file

[Nawres GHARBI]

Posted on May 31, 2018 at 10:36

ioc attached

________________ Attachments : 746.ioc.zip : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HxY8&d=%2Fa%2F0X0000000azo%2FKB1gWkkzcXk8VP2Ma4o1Hi5psrvwaACg2zNArS3GWlw&asPdf=false

[Vitaliy Chernobay]

Posted on May 31, 2018 at 12:25

Hello,

GHARBI.Nawres

On the

site

st.com

there is only the latest version 4.1

I really want to get a new version as soon as possible.

Many great thanks for the answer.

[Vitaliy Chernobay · Accepted solution]

Posted on June 01, 2018 at 03:37

Hello,

GHARBI.Nawres

I launched your project.

I replaced the version of CubeMX in your file .ioc (4.26 -> 4.1)

The project is launched under the condition

//WM_MULTIBUF_Enable(1);

or

WM_MULTIBUF_Enable(0);

BUT! If I compile the project with the condition

WM_MULTIBUF_Enable(1);

After the power is turned off and on...

a project does not start...

I am very vexed.

Please check it again carefully/

With Regards,

Vitaliy.