Problem about fatfs and QSPI on nRF52840

[junpu]

static bool fatfs_init(void)
{
	FRESULT ff_result;
	bool    init_result = true;
	DSTATUS disk_state = STA_NOINIT;
	bool flag = false;

	memset(&m_filesystem, 0, sizeof(FATFS));

	// Initialize FATFS disk I/O interface by providing the block device.
	static diskio_blkdev_t drives[] =
	{
#if USE_SD_CARD
		DISKIO_BLOCKDEV_CONFIG(NRF_BLOCKDEV_BASE_ADDR(m_block_dev_sdc, block_dev), NULL)
#else
			DISKIO_BLOCKDEV_CONFIG(NRF_BLOCKDEV_BASE_ADDR(m_block_dev_qspi, block_dev), NULL)
#endif
	};

	diskio_blockdev_register(drives, ARRAY_SIZE(drives));

	NRF_LOG_INFO("Initializing disk 0 (QSPI)...");

	disk_state = disk_initialize(0);
	if (disk_state)
	{
		NRF_LOG_ERROR("Disk initialization failed.");
		return false;
	}

	NRF_LOG_INFO("Mounting volume...");
	ff_result = f_mount(&m_filesystem, "", 1);
	if (ff_result != FR_OK)
	{
		if (ff_result == FR_NO_FILESYSTEM)
		{
			NRF_LOG_ERROR("Mount failed. Filesystem not found. Please format device.");

		}
		else
		{
			NRF_LOG_ERROR("Mount failed: %u", ff_result);
        
		}

		ff_result = fatfs_mkfs();
		if (ff_result != FR_OK)
		{

			init_result = false;
		}
		else
		{
#ifdef RECORD_ERR
			m_log_buf_len =   sprintf((char *)m_log_buf, "f_mount failed,then fatfs_mkfs sucessfully, fatfs_mkfs result %d\r\n", ff_result);
			record_stat_data(0);
#endif			
			flag = true;

		}
	}
	else
	{
		flag = true;
#ifdef RECORD_ERR
		m_log_buf_len =   sprintf((char *)m_log_buf, "Initializing disk 0 (QSPI) completed,ff_result %d\r\n",ff_result);
		record_stat_data(1);
#endif
	}

	return init_result;
}

Hi, I was using nRF52840 ， flash is mx25L25645GM2, I used fatfs with QSPI ,but I found fatfs was unstable,After some time, the stored file would dispear.Sometime there were scrambling symbols in my files

[junpu]

Attach the picture

[Jared]

Hi, 

Which SDK and Softdevice version and revision of the nRF52840 are you using?

Regards

Jared

[junpu]

sdk :nRF5_SDK_15.2.0_9412b96  

revision of the nRF52840 ： cortex-m4 nrf52840_xxAA 1024KB+4KB 256KB  PCA10056

[Jared]

Hi,

Could you share your definition of the block_dev? And the functions where you open read/write and close the files.

Regards

Jared 

[junpu]

/**
 * @brief  QSPI block device definition
 */
NRF_BLOCK_DEV_QSPI_DEFINE(
    m_block_dev_qspi,
    NRF_BLOCK_DEV_QSPI_CONFIG(
        512,
        NRF_BLOCK_DEV_QSPI_FLAG_CACHE_WRITEBACK,
        NRF_DRV_QSPI_DEFAULT_CONFIG
     ),
     NFR_BLOCK_DEV_INFO_CONFIG("Nordic", "QSPI", "1.00")
);

static uint32_t file_open(const char*filename)
{
    static FIL file;
    FRESULT ff_result;

    NRF_LOG_INFO("Opening file: %s.", NRF_LOG_PUSH(filename));
    if(get_record_disabled()){
        return NRF_ERROR_BUSY;
    }
    ff_result = f_open(&file, filename, FA_READ | FA_WRITE | FA_OPEN_APPEND);
    if (ff_result != FR_OK)
    {
       NRF_LOG_INFO("Unable to open or create file: %d", ff_result);
       return NRF_ERROR_BUSY;
    }
    m_opened_file = &file;
    return NRF_SUCCESS;
}

static uint32_t file_write(const uint8_t *buf, uint32_t len)
{
    uint32_t written = 0;
    FRESULT ff_result;
    if(m_opened_file == NULL){
        NRF_LOG_ERROR("Sorry, open file first");
        return NRF_ERROR_BUSY;
    }
    NRF_LOG_HEXDUMP_DEBUG(buf, len);
    if(get_record_disabled()){
        return NRF_ERROR_BUSY;
    }
	f_lseek(m_opened_file,f_size(m_opened_file));
    ff_result = f_write(m_opened_file, buf, len, (UINT *) &written);
    if (ff_result != FR_OK || written != len)
    {
        NRF_LOG_ERROR("Failed to write, ff_result: %d, written: %d", ff_result, written);
        return NRF_ERROR_NULL;
    }
    else
    {
        NRF_LOG_DEBUG("%d bytes written.", written);
    }
    f_sync(m_opened_file);
    return NRF_SUCCESS;
}