STM32H723Vx_btt and TFT35 firmware problem

[Citfta]

I have a BTT_SKR_3 and the TFT35 screen.  For the last several days I have been trying to get the proper firmware compiled.  I have tried several versions of Marlin.  With most of them I can get the software to compile just fine until I try to enable the function for the TFT display.  Then I get an error that says the TFT-SPI display only works with the STM32F series chips.  Does anyone know a way to get around this problem.

Thanks for any help you can give.

[Citfta]

I finally got it figured out.  The very latest Marlin which is 2.1.x supports the STM32H723VG chip and the TFT35 screen.  So I was finally able to compile a program with both that chip and the display.

Edited July 29, 2023 by Citfta

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[biquser1024]

Can you post what SERIAL_PORT configurations you used and which pins the EXP cable strips were connected to on the board and display?