Resolved! STM32H753ZI SPI SD Card Not Responding to CMD0/CMD8 (0xFF Response)
Hi everyone,I’m working with an STM32H753ZI and trying to interface a 32GB SDHC card via SPI using FatFs.The SPI connection seems fine (I can read 0xFF repeatedly), but the SD card does not respond to CMD0 or CMD8 — both return 0xFF. As a result, f_m...