TouchGFX touch coordinate mismatch on STM32H7B3 hardware

[vijayajangam]

Hello ST Community,

I am using STM32H7B3 + TouchGFX + 7-inch 800×480 TFT with GT911/GT9111 touch controller.

In the TouchGFX PC simulator, all buttons and toggle switches work correctly. But after flashing to hardware:

• TFT display is working properly.
• Touch is detected.
• Actual touch point and detected touch point are different.
• Touch is detected on the same horizontal line, but the vertical coordinate is shifted/wrong.

I want to know the correct solution for touch coordinate mapping/calibration. Should this correction be done.

Please guide me on the correct method for touch calibration and hardware control/status display in TouchGFX.

Thank you.

[MM..1 · Accepted solution]

You missunderstand, TouchGFX is GUI manager , but right hw data is your code job. In target folder is one file for touch position getter, try handle your issue here. FYI STM32TouchController.cpp