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