STM32duino STM32SD

Enables reading and writing on SD card using SD card slot of the STM32 Board.

data, storage
platformio lib install 1810


STM32 SD library for Arduino

With an STM32 board with SD card slot availability, this library enables reading and writing on SD card using SD card slot of a STM32 board (NUCLEO, DISCOVERY, ...).

This library follow Arduino API.

For more information about it, please visit:


This library is based on FatFs, a generic FAT file system module for small embedded systems.

The FatFs has been ported as Arduino library here. The STM32SD library depends on it.



The FatFs has several user defined options, which is specified from within the ffconf.h file.

This library provides a default user defined options file named ffconf_default.h.

User can provide his own defined options by adding his configuration in a file named ffconf_custom.h at sketch level or in variant folder.

SD detect and timeout

  • SD_DETECT_PIN pin number can be defined in variant.h or using build_opt.h.

  • SD_DATATIMEOUT constant for Read/Write block could be redefined in variant.h or using build_opt.h