SD issue in WEC2013 RRS feed

  • Question

  • Hi,

    We are working on Wifi driver over SDIO interface on Freescale based i.Mx6 board.
    Wifi in up Now and normal Wifi functionalities like Band change,Scanning,Connect/Association are working fine.
    But some time during Bulk transfer (Like FTP File transfer from remote Host PC to the platform over Wifi),
    we are facing the SDIO Write fail issue.

    We are getting the error from SD bus driver as "The operation encountered an unspecified error"
    When we debugged inside SD bus driver we found that there is pointer/flag "m_curHCOwned "to track the current HC transfer status.
    This pointer holds the current Request buffer address and will be made NULL once SDHC transfer done successfully.
    SD bus driver checks this pointer, proceed for transfer only if this variable is NULL.
    During the failure case, This flag is not NULL and SD bus is returning failure.

    Thanks and Regards,


    Thursday, April 23, 2015 2:26 PM

All replies

  • Hi Seeth,

    Have you installed all the latest QFEs?

    A QFE was released just a few days ago that addressed an issue with the ISR stopping to work, when you are doing bulk transfers to the SD card you are likely to be heavily loading the ISR which makes it more likely to stop working.

    Look at this thread

    • Proposed as answer by tomleijen Monday, May 4, 2015 10:04 PM
    Friday, April 24, 2015 5:24 AM