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Graduate II
February 20, 2025
Question

CubeMX FileX Maximum SRAM Disk Size

  • February 20, 2025
  • 3 replies
  • 635 views

Hello,

Why is there a limitation to the maximum Disk space in FileX?  256K is too small.  I would like to allocate 64Mbytes.

mattcrc_0-1740030478318.png

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    3 replies

    Technical Moderator
    February 20, 2025

    Hello @matt-crc 

    This is a hardware limitation. Please check the datasheet of your device. 

    Saket_Om_0-1740049104126.png

     

    matt-crcAuthor
    Graduate II
    February 20, 2025

    Hi @Saket_Om 

    I did and the memory is available.  I highlighted the available memory on the datasheet

    mattcrc_0-1740053118943.png

     

    Technical Moderator
    February 20, 2025

    Hello @matt-crc 

    This is not an embedded SRAM. It concerns the FMC (Flexible external memory controller) peripheral which can control an external SRAM.

    matt-crcAuthor
    Graduate II
    February 20, 2025

    hi @Saket_Om 

    ok, but i find it very strange that FileX can be configured to use the FMC with the external Flash (Nor/Nand) without that limitation, but it can't use the very same FMC for a RAM disk... 

    Graduate II
    February 20, 2025

    Yes, doesn't make sense to me either, should be able to use the SDRAM, and however large that is, less the offset into it.

    Perhaps SRAM DISK is too specific, and there should be an SDRAM-DISK, or a more generalized RAM-DISK

    @STTwo-32 please flag this for consideration/review for parts supporting external memory and/or SDRAM enabled, and an "Address" field in the user interface.

    Technical Moderator
    February 21, 2025

    Hello @Tesla DeLorean 

    I reported your request internally. 

    Internal ticket number: 203748 (This is an internal tracking number and is not accessible or usable by customers).