FatFs impementation _ FR_NO_FILESYSTEM error after f_open

[malarab]

Hello,

I build an application with FatFs Middleware to log data on a uSD card.

I used the same protocol on FatFs_uSD application with wl55 mcu.

f_mkfs and f_mount function return FR_OK.

but f_open return FR_NO_FILESYSTEM 

i tried to change between SDHC and SDSC

i passed the SD module power supply from 3.3V to 5V

i changed min heap and stack sizes

i changed _MAX_SS in ffconh.h

... but always the same problem !

any suggestion please ?

[malarab]

I should always format the disk to be able to write on it