Luminary Micro SD Card Drive Letter?

[psears]

Has anyone had any success using the "List Folder" file I/O vi with the LM3S8962 eval board?  I've tried using a C:\, M:\, U:\ and a blank file path, but all of them result in error 1.  I also can't reference files located in folders on the SD card for this same reason.  Is this functionality supported? FYI, I'm running LV 2010.

Thanks!

[Justin_P]

Hello,

C:\, M:\ and blank should all work.  There are some issues with certain types of SD cards.  Could you check to see if you have one of these types of SD cards?

[psears]

I'm using a standard Lexar 2GB MicroSD card (not HC or XC).  I can open file references using C:\ or M:\, but I can't find a way to get a directory list using this same convention.  Here is a pic of the test code and the resulting output.  I've also attached the VI.

[Justin_P]

Hello,

I did a little more digging and found a known issue with the List Folder.vi when the you specify a base of "C:\" (or anything like it..."c:","m:\","m:","\", etc.).  In order to use the List Folder VI, you need to specify a folder (example, "C:\temp\").  The developer mentions that this base folder ("C:\temp\") would be able to hold 1 GByte of data, and a subfolder ("C:\temp\test1\") would be able to hold 8GBytes of data.  Please give this a try and let me know the results.

I hope this helps,

[psears]

This works, but there seem to be some limitations on what you can name folders/subfolders.  For instance C:\temp\test and C:\Temp\test work but C:\Temp\Test doesn't.  Is it that mixed case names aren't allowed for subfolders, or am I missing some bigger constraint.

Thanks for helping me get this far.

-P

[Justin_P]

Hi again,

I'm not sure actually.  I'll have to look into this.