SD or MMC card as storage for logging
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  1. #1
    Join Date
    Oct 2018
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    4

    Post SD or MMC card as storage for logging

    • Thanks, I'll download this and see what I can learn. I appreciate your help.

      Mike





  2. #2
    Join Date
    Aug 2003
    Location
    Australia
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    1,043

    Default Re: SD or MMC card as storage for logging

    Download what?

    I was aware of some raw data use of an SD card, which is basically using one as a large EEPROM.
    Has anything else happened? I’m sure PBP could do a FAT32 filesystem, but not sure how any PBP supported chips would go fitting it, and a useful program as well.

  3. #3
    Join Date
    Feb 2013
    Posts
    486

    Default Re: SD or MMC card as storage for logging

    I'm using Parallax's memory stick datalogger device. It allows to write/read to USB flash drives.

  4. #4
    Join Date
    Apr 2014
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    Northeast
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    292

    Default Re: SD or MMC card as storage for logging

    I gave up and am storing the data on an external 2 Mb EEPROM, then downloading it via USB. I never conquered the mysterious SD Card.

  5. #5
    Join Date
    Aug 2003
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    Australia
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    Default Re: SD or MMC card as storage for logging

    SD card filesystems are quite large. I’m not even sure one would fit on any PBP supported devices.

    This looks like a shrill account though, in any case.

  6. #6
    Join Date
    Sep 2009
    Posts
    749

    Default Re: SD or MMC card as storage for logging

    I used one few years ago on PIC18F2550.
    http://www.picbasic.co.uk/forum/cont...USB-SD-LOGGING
    http://www.picbasic.co.uk/forum/show...766#post128766
    It uses about 13KB. So there is 19KB Left for user code.

  7. #7
    Join Date
    Aug 2003
    Location
    Australia
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    Default Re: SD or MMC card as storage for logging

    Wow. I’d have loved to know about that at the time.
    Even if limited to FAT16, that should still be readable by any modern PC.

  8. #8
    Join Date
    Sep 2009
    Posts
    749

    Default Re: SD or MMC card as storage for logging

    It's not FAT16, it was FAT32.
    'DEFINE NO_FAT32 '-2694 no need for any FAT32 compatibility
    'DEFINE NO_FAT16 '-1788 no need for any FAT16 compatibility
    But you can make it to be FAT16, and drop support for 32 if you don't need it.

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