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. 

[Håkon Alseth]

Hello,

 

Which revision of the nRF52840 are you using?

If you are using the latest revision of the nRF52840, there are some erratas that has not been properly applied in our SDK; please see this thread.

 

Please also note that former engineering revision A has now been deprecated and will not work properly with SDK 15.

 

Kind regards,

Håkon

[Sergii]

Hello,

I use C revision.

Regards,

Sergii

[Håkon Alseth]

Hi Sergii,

 

When using rev C or the production release of nRF52840, it is important that you apply the patch mentioned in my former link.

Could you try this and report back?

 

Kind regards,

Håkon