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Thread: How to use long file names on Teensy/Arduino SD Card Reader

  1. #1
    Junior Member
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    Feb 2019
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    How to use long file names on Teensy/Arduino SD Card Reader

    Does anyone know if there is a way to get Arduino SD card readers to work with long files names (bigger than the 8.3 filename format)? I am currently trying read files from a Teensy 3.5 using the standard Arduino SD card library, and the file fails to open whenever I use longer file names.

    Is this an inherent hardware limitation, or is it simply a software limitation?

    If I could implement this, it would greatly simplify my code and would improve the user experience significantly.

  2. #2
    Senior Member+ defragster's Avatar
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    Feb 2015
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    That is a software limitation. There are related forum posts - I think most link to work found or linked here which came up first in my search : https://github.com/greiman/SdFat

  3. #3
    Junior Member
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    Quote Originally Posted by defragster View Post
    That is a software limitation. There are related forum posts - I think most link to work found or linked here which came up first in my search : https://github.com/greiman/SdFat/mybkexperience
    Thank you so much for the suggestion.

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