Fail to write to SD

Hi,

I'm using STM32L451RCT with SDMMC and FATFS.

I'm Generating the code from CUBE.

Reading files (f_read) from SD is working but I'm failed to write to file (f_write)

Does anyone know how can I solve the problem

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Super User

Look at the return value. Figure out which line is failing, go from there.

Visitor II

Hi,

The return value from f_write is: FR_DISK_ERR

In SD_write function it get out with timeout after BSP_SD_WriteBlocks_DMA call

Graduate II

Have to debug the DISKIO layer

Would look at the IRQ Handler, and make sure the one you need is not WEAK.

Check the .MAP and .LST files, check what code got built /bound

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