How to write code for stm32h750vbt6 SD Card? How can i initialize DMA

[DRath.1]

I am trying to create file in sd card and pass some string to that file. And I also want to initiate DMA for SDMMC. How can i do that? there is no any such tutorial for h7

[Tesla DeLorean]

I write code rather than tutorials. You need to watch the memory used, the alignment, and cache coherency.

[DRath.1]

I wrote code, below i am attaching code and screenshot of ioc settings in which DMA is not mentioned, and also attached schematic of stm32h7vbt6. I think the connection of vbt6 board is not correct.

First I simply try for create the file. kindly go through below attached file.