USBD_MSD Disk initialization fails in USB unplug with SDK15.0

[Mo]

After unplugging the USB, disk initialization fails in usbd_user_ev_handler function function (case: APP_USBD_EVT_STOPPED). If I connect and disconnect a second time, it works.

[art_art]

Hi.

I had the almost the same issue. After any access to the files via the USB, the file system was demolished after internal flash access.
I added additional logs to the SDK in QSPI module and it has shown me, that QSPI uninit function (block_dev_qspi_uninit), called after unplugging the USB, was busy (return with NRF_ERROR_BUSY).

I add this code at the beggining of block_dev_qspi_uninit:

if ((p_work->state != NRF_BLOCK_DEV_QSPI_STATE_IDLE))

{

 wait_for_idle(p_qspi_dev);

}

It fixed the problem.

Best regards
Artur

[Håkon Alseth]

Thanks for reporting this, Artur. I will forward your proposed fix to the devs.

 

Kind regards,

Håkon