TouchGFX UI works in simulator but not displaying on STM32H7B3I-EVAL TFT (only backlight ON)

[vijayajangam]

Hello,

The board revision I am using is MB1370-lcd-b02 a254300030.

I am working with the STM32H7B3I-EVAL board and using TouchGFX (TouchGFX Designer).

I have created a simple screen in TouchGFX, and:

• The simulation runs correctly on PC
• The project builds successfully in STM32CubeIDE
• The code flashes successfully to the board

However, on hardware:

• The TFT backlight turns ON
• But no UI is displayed (screen is blank)

[vijayajangam]

Hello,

Touch GFX is suport dirrectly flash code into controller or need STM32cube IDE for generate output file dirreclty from TOuch GFX uplaod the code into controller.

Thanks.

Vijaya.

[JohanAstrup]

Hello @vijayajangam.

There have recently been similar reports of this issue. It appears that the touch driver was changed in the latest board revision, introducing breaking changes to the software.

I have attached a project in which I updated the latest TBS to the newest version of the BSP code. Please validate and confirm whether this resolves your issue. If it does, I will upload a new version of the TBS with this fix.

Best regards,
Johan

[JohanAstrup]

Hello again.

This is a duplicate of this this ticket. Please refer to the solution proposed there.

Best regards,
Johan

[vijayajangam]

Hello ,

please upload a new version of the TBS with this fix. 

Thank You

Vijaya.

[JohanAstrup]

I need you to confirm that it works before I can upload it.
Could you please test the previously attached project and let me know whether it fixes the issue?

Best regards,
Johan

[vijayajangam]

no my issue not yet solve 

[JohanAstrup]

New versions of both the STM32H7B3I-EVAL TBS and BSD, which support newer board revisions, have now been uploaded to TouchGFX Designer.

The new TBS version is 3.0.21, and the new BSD version is 3.0.18. Please check and confirm whether these versions work on your board.

Best regards,
Johan