STM32F401 SD CARD

[alizare368]

hi
I designed a board that includes cs4344 and sd card and mcu stm32f401.to get started with sd card ,I need help.



why the F_mount() dose not execute?

My connection SD card  :   
PC8   :D0
PC9   :D1
PC10 :D2         
PC11 :D3

PC12:ck
PD2:CMD




FATFS FatFs;
FIL fil;
static FRESULT status;

 status=f_mount(&FatFs, "M:", 1);

[@rt]

There’s no information there that could allow anyone to possibly help you.
Not even the return value for status.