NCS (Zephyr-OS/ littlefs) SD-card support

Question

Hi, 
 I need to connect SD card to nRF52833, using NCS (Zephyr/ littlefs). 
 Referring to readme in 
cs\v2.2.0\zephyr\samples\subsys\fs\littlefs - looks like littlefs supports SD storage. 
 The question is - do I need anything on nRF52833 (SPI driver?) side to be able to use SD mounted littlefs? 
 Please advise. Thanks for your timely attention and help.

Turbo J · Accepted Answer

Bad idea, SD cards work better when using FAT. 
 The v2.2.0 SDK includes a version of FatFS that can be made usable with an SD card.

ovrebekk · Answer

Hi Ash 
 I agree with Jörg that it would make more sense to use the FAT filesystem for SD cards, otherwise you wouldn't be able to read the card anywhere else. This is also the only file system SD cards have been tested with in Zephyr. 
 The fat_fs sample in Zephyr is a good starting point, and shows you both the software configuration and hardware configuration needed to use fat FS with SD cards. 
 The board files are for the nRF52840, but it should be similar for the nRF52833. 
 Best regards Torbjørn

NCS (Zephyr-OS/ littlefs) SD-card support

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