exFAT is proprietary, and Microsoft owns patents on several elements of its design.ĮxFAT can be used where NTFS is not a feasible solution (due to data-structure overhead), but a greater file-size limit than the standard FAT32 file system (i.e. en. exFATĮxFAT (Extensible File Allocation Table) is a file system introduced by Microsoft in 2006 and optimized for flash memory such as USB flash drives and SD cards. I presume that I could format this card as FAT32, and it would work, right? Unfortunately, my embedded system has no format capability at the moment, and it seems a lot to ask of an end user to somehow format big cards in a way that Windows does not support. If I stick the card into my PC, Windows says the “File system” is “exFAT”. * An error here should override the current error, as its likely fatal. If( ( ( pxPartition->usBlkSize % 512 ) != 0 ) || ( pxPartition->usBlkSize = 0 ) )
PxPartition->usBlkSize = FF_getShort( pxBuffer->pucBuffer, FF_FAT_BYTES_PER_SECTOR ) PxBuffer = FF_GetBuffer( pxIOManager, pxPartition->ulBeginLBA, FF_MODE_READ ) It seems to get unhappy around here: /* Now we get the Partition sector.
However, I just tried sticking in a new 128 GB SanDisk Ultra SDXC UHS-1 card, and the mount fails. Testing with 8GB and 32GB cards works well.
I’ve got FreeRTOS + FAT working with SD cards.
