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  • UhClem's Avatar
    05-30-2019, 07:36 PM
    I suspect that this depends more on the software (which you don't describe) than on the SD card. Any FAT library is going to create occasional pauses when it needs to search for a new cluster. If it does that poorly,...
    1 replies | 149 view(s)
  • UhClem's Avatar
    05-25-2019, 05:15 PM
    UhClem replied to a thread Emmc in Project Guidance
    MMC cards (and presumably eMMC) are a bit different and will require changes to the SD card drivers. I still have a 64MB MMC card gathering dust around here somewhere. I can't recall if I ever got one of my embedded...
    15 replies | 403 view(s)
  • UhClem's Avatar
    05-19-2019, 07:23 PM
    UhClem replied to a thread Emmc in Project Guidance
    The SDHC clock divisor is limited so for best performance you need to carefully select the main clock. At 256MHz divide by six is the best you can do which means that the SD clock is slower than it could be. 200MHz...
    15 replies | 403 view(s)
  • UhClem's Avatar
    04-30-2019, 08:47 AM
    There is a lot of code there, more than I really care to go through but a few things that jump out: You have no protection from writing data to a buffer after it is full. This will clobber whatever happens to be...
    2 replies | 128 view(s)
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SD card Latency test tool 05-30-2019 07:36 PM
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