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Sanjay27
Associate II
December 23, 2025
Solved

TouchGfx Touch

  • December 23, 2025
  • 1 reply
  • 266 views

Hello,
I am using the STM32U5G9ZJTXQ with TouchGFX on a 4.3-inch display (480×272). The display works fine, but the touch is not working. The touch controller IC is GT911.

Best answer by JohanAstrup

Hello @Sanjay27.

Could you please share the content of your STM32TouchController.cpp file?

E.g. the TBS for the STM32H745I Discovery Kit available in TouchGFX Designer also uses the GT911, so you can use this as a reference. Alternatively, you can also have a look at this repository: https://github.com/STMicroelectronics/stm32-gt911.

Best regards,
Johan

1 reply

JohanAstrupBest answer
ST Technical Moderator
January 2, 2026

Hello @Sanjay27.

Could you please share the content of your STM32TouchController.cpp file?

E.g. the TBS for the STM32H745I Discovery Kit available in TouchGFX Designer also uses the GT911, so you can use this as a reference. Alternatively, you can also have a look at this repository: https://github.com/STMicroelectronics/stm32-gt911.

Best regards,
Johan

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