FatFS and FreeRTOS error f_write().

[AKuzn]

Good day.

I am having difficulty with FatFS while working with FreeRTOS.

The problem is of the following nature. Mounting the distka goes well. There is no problem to create a file either. But when trying to write to a file, the f_write () function always returns FR_DISK_ERR.

[Tesla DeLorean]

Would recommend instrumenting the DISKIO layer to understand the interaction and failure.

Print out the fault codes from the SDIO/SDMMC layer.

Remember that the SDIO/SDMMC doesn't multi-task, you'll need some mutex or semaphore to gate ownership, and handle interrupts in a timely fashion.

[AKuzn]

Semaphore has already been created by CubeMX. DMA interrupt priority is lower than RTOS. Mounting a disk, creating a file and reading from a file goes well, but writing always returns FR_DISK_ERR.