We are facing a technical issue creating a TouchGFX project. We suspect it is an inherent issue with ST’s toolchain —STM32CubeMX and TouchGFX—when used with the official STM32H757 Eval Kit.
Issue at Quick Glance:
1. Enabling LTDC in STM32CubeMX automatically enables DSI, even when we intend to use only RGB888 via CN20 (as in our custom display board with 10.1inch Winstar WF101JTYAHLNB0#).
2. This causes build failures and prevents TouchGFX Designer from generating any GUI code, despite the project being valid and configured as per ST training examples.
3. We’ve attempted all known workarounds, including patching headers and ensuring paths/configs are correct—yet the issue persists.
We kindly request:
1. Resolution on how to disable DSI cleanly while keeping CubeMX and TouchGFX code generation functional.
2. Clarification on internal tool dependencies between LTDC and DSI, and how to bypass them for RGB-only use cases.
3. A reference TouchGFX project using only RGB+LTDC (via CN20) for STM32H757 Eval Kit.
This is a time-sensitive issue. We’re happy to provide our .ioc, test project zip if needed for detailed analysis and support.
We look forward to your expert guidance.
