A problem with USB mas storage.

[Sergii]

Hello.
I have a problem with usbd_msc .
When I plug the device by usb and Windows sees the device how mass storage. After I copy files to the device - it copies and all is good. But when I plug off and plug on USB again - some files are broken. It happens some times and random. In the biggest part of the times help "Safely Remove", but not all time.

Note! I use demo APP from SDK15 

[bjorn-spockeli]

Hi Sergii,

I think you should try to add the code suggested in this answer and see if that helps. 

Best regards

Bjørn 

[Sergii]

Hi Bjørn,

Have tried - didn't help (((.
I add this code in the function:

static ret_code_t block_dev_qspi_uninit(nrf_block_dev_t const * p_blk_dev)
{
ASSERT(p_blk_dev);
nrf_block_dev_qspi_t const * p_qspi_dev =
CONTAINER_OF(p_blk_dev, nrf_block_dev_qspi_t, block_dev);
nrf_block_dev_qspi_work_t * p_work = p_qspi_dev->p_work;

//*******************************************Added code*************************************************//
if ((p_work-> state != NRF_BLOCK_DEV_QSPI_STATE_IDLE))
{
wait_for_idle (p_qspi_dev);
}
//*******************************************Added code*************************************************// 

if (m_active_qspi_dev != p_qspi_dev)
{
/* QSPI instance is BUSY*/
return NRF_ERROR_BUSY;
}

if (p_work->state != NRF_BLOCK_DEV_QSPI_STATE_IDLE)
{
/* Previous asynchronous operation in progress*/
return NRF_ERROR_BUSY;
}

if (p_work->ev_handler)
{
/*Asynchronous operation*/
const nrf_block_dev_event_t ev = {
NRF_BLOCK_DEV_EVT_UNINIT,
NRF_BLOCK_DEV_RESULT_SUCCESS,
NULL,
p_work->p_context
};

p_work->ev_handler(p_blk_dev, &ev);
}

p_work->state = NRF_BLOCK_DEV_QSPI_STATE_DISABLED;
nrf_drv_qspi_uninit();

memset(p_work, 0, sizeof(nrf_block_dev_qspi_work_t));
m_active_qspi_dev = NULL;
return NRF_SUCCESS;
}

 Please let me know, maybe some thing else.