SD card "Mount Failed Error"

[ashish_shukla]

Hi All, 

I'm trying to interface a SD Card with nRF52840 DK. 

I've got a SD Card socket and a FAT32 formatted 8GB sd card. 

When I run, fatfs example , I get following error 

<info> app: FATFS example started.
<info> app: Initializing disk 0 (SDC)...
<info> app: Capacity: 7580 MB
<info> app: Mounting volume...
<info> app: Mount failed.Error Code : 13 

Can someone point me to resolve this error ? 

Thanks. 

 

[Kenneth]

Check out this thread: https://devzone.nordicsemi.com/f/nordic-q-a/41037/sd-card-mounting-using-fatfs-example 

[ashish_shukla]

I'd already gone through this link - It didn't solve my problem. 

[Kenneth]

I am not aware of anything other than the voltage is too low. What SD card reader are you using, and is there a regulator on it?

Kenneth

[ashish_shukla]

Hi, 

I'm using this https://robu.in/product/micro-sd-card-module/  SD Card reader. 

It does have voltage regulator circuit. 

Do you think I should provide external 5V supply instead of giving it from nRF52 DK board ? 

[Kenneth]

I suspect the problem may be electrical, so that seems like a good start. You can also try to add a logic analyzer just to see if anything looks odd (e.g. maybe some signals aren't working).