Problem with USBHS and FATFS - STM32F407

[Ahmed Emad el-deen]

Posted on April 26, 2017 at 02:46

I'm using STM32f407 with USB 3300 ULPI module, and try to copy file from SD card using SDIO to flash memory using fatfs. 

The drive mounted and file opened successfully, but while reading or writing data on flash memory f_read or f_write fails and returns disk_err although first calls of f_read/write work properly. ?