BTT SKR3 MCU STM32H723VGT6 Support

[sacy80]

Is your feature request related to a problem? Please describe.

Hi all

I got a BTT SKR3 which the MCU are "STM32H723VGT6", i try compile Marlin 2.1.2 with env:STM32H743Vx_btt. but when firmware flash. the board not responding . no usb com.

Possible due to MCU env not compatiable?

Are you looking for hardware support?

SKR3 with MCU "STM32H723VGT6"

Describe the feature you want

MCU support for SKR3 MCU "STM32H723VGT6"

Additional context

No response

[ellensp]

See #25387 (comment)
Is already being worked on, wonce BTT release the code.

[thisiskeithb]

I've pinged @bigtreetech about this, but it won't be added in the referenced PR.

BigTreeTech will need to submit a PR or post the code so I can port it upstream, but this board/MCU combination won't be supported until that happens.

[CristianoGorla]

Hello,
I just successfully compiled and flashed Marlin from the Bigtreetech Github Octopus-Max-EZ(https://github.com/bigtreetech/Octopus-Max-EZ).
I'm using the STM32H723VGT6 MCU version and this is the only Marlin source that boot the board.
I think you can find the things to make compatible the official Marlin version.

[thisiskeithb]

I've added SKR V3.0/V3.0 EZ support back into the referenced PR:

• ✨ BTT Octopus Max EZ V1.0 (STM32H723VE/ZE), SKR V3.0 / V3.0 EZ (STM32H723VG) #25387

[CristianoGorla]

Thanks @thisiskeithb

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