Write issue with STM32F405 w/ SDIO using fatfs as part of CubeIDE. uSD card mounts OK, system links OK, but anytime a write operation occurs there is a fault. The hardware has been instrumented OK and checked withe same result on another PCB.
However this was tried on an STM32F469 Discovery and worked fine. Does anyone have an STM32F405 running with an SD using a fatfs?