Simon Barotte

@greiman Yes it' not a true SD but it's like an SD card so I don't know if it change something or not. But I've used your library to read/wrtite...

Ok nice thanks for your help

Just for information , I've contacted the manufacturer of the device, and here is that answer > Our SD NAND default is format FAT16. Our SD NAND is the same...

I'm using a personnal board build with an `SAMD21E17A`. Yes I'll try to edit settings, I'll let you know ;)

Hi @greiman I've just tried to set new param but I have the same issue, I'e tried with `#define SPI_CLOCK SD_SCK_MHZ(25)` and force with `#define SD_CONFIG SdSpiConfig(SD_CS_PIN, SHARED_SPI, SPI_CLOCK)` but...