Rafael Mamro

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5 years, 8 months ago.

LittleFS doesn't mount

Hi guys,

I've problems with mounting LittleFS on a dataflash blockdevice. The mount method never returns. By stepping through the code, I've found out that it always hangs when initialising the blockdevice while calling:

line 419 in stm_spi_api.c

while (!LL_SPI_IsActiveFlag_RXNE(SPI_INST(obj)));

The SPI SR is always 2 (even) instead of 1 (odd). But I have no idea what's wrong and how to fix this. Any help is appreciated.

Thanks and cheers!

1 Answer

Pavel S
5 years, 8 months ago.

I use SD card not dataflash but also through SPI on STM32F412/F429 and have no problems

if ( sd.init() == 0) {
    if (fs.mount(&sd) == 0) {
        printf("FS mounted\n");

        struct statvfs stat;

        fs.statvfs(SD_ROOT, &stat);

        printf( "block size: %lu free blocks: %llu\n", stat.f_bsize, stat.f_bavail);

    } else {
        printf("FS not mounted\n");
    }

} else {
    printf("cound not init SD\n");
}