Hello! everyone.
I use the stm32 Nucleo-L476RG to read the total size of USB flash drive and external hard drives, respectively.
It works with USB flash drives, but not with external hard drives. The error message from STM32 is
FR_DISK_ERR (A hard error occurred in the low level disk I/O layer ) when I try to mount the external hard drives.
The wiring diagram is following
Please give me some suggestions to fix this issue. Thanks in advance.
