is SDMMC1_CDIR (microSD pin2, STM32H743VIT on GPIO PB9) Needed for 1bit operation?
I believe this signal is not needed by the 1bit interface, that only D0, CMD and CK is required. However since I cant get my card responding I start questioning my design. I thought CDIR was only used for SD cards used in SPI mode?Alternatively I may...