SD/TF Card Filesystem

[Alizame]

What Filesystem should be used? I'm using a 2GB SD-Card and I tried a few different ones, but i couldn't get it to work.

I always get an error from the fs demo:

... Get FS T Flash device info fail! T Flash used:0 Bytes, total size:0 Bytes(0.000 MB) ... Start Fs TF card read write test! Open file failed:-1

[ihewitt]

Standard FAT32 should be fine. There are power issues driving the SDCard as the board powers up GRPS though: https://github.com/Ai-Thinker-Open/GPRS_C_SDK/issues/421 so if you're getting intermittent errors try 1. making sure to have enough good power and/or 2. power cycling the board (not just resetting it).

[Alizame]

Hi, thanks so much for the help so far!

I looked at #421 (and #457 ), but I don't have the problem that it "sometimes" doesn't mount, it never works/worked ;( I always power cycle it between tests.

I supply the pudding board with my bench PSU (has a 5A current capability) at the VBAT-Pins. (I also looked if I have some fitting caps, but no luck so far, i may need to order some LOW ESR ones tomorrow)

I tried FAT32 with allocation unit sizes of 4096 or 512 bytes, both not working (i formated the sd-card via windows).

On another note: does someone know why the altitude is 0.00000 in the GPS example?

[mirekhk]

Hi all, I have same problem. The SD card is not mounted at all even I tried as many as possible FAT versions. Can someone help here?

Thank you

[ermito]

Same problem. tried different cards