Hello,
the STM32F446 is a STM32 MCU with Cortex-M4, without DMA2D and without Display Controller.
As a starting point for a custom specific hardware based on STM32F446, let me recommend to use the Build Environment for STM32F407, which seems to be very close to the STM32F446 - from a GUI perspective.
I hope this helps.
Best regards,
Manfred.
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