sd card mounting using FATFS example

RE: sd card mounting using FATFS example

samkris — Wed, 05 Dec 2018 07:04:10 GMT

Hi,

I got it working and log messages as below.

info> app: FATFS started.
<info> app: Initializing disk 0 (SDC)...
<info> app: Capacity: 3781 MB.
<info> app: Mounting volume...

<info> app:
Listing directory: /
16 NORDIC.TXT<info> app: Writing to file NORDIC.TXT...
<info> app: 16 bytes written.

FIX:

Connected sd card adapter VCC to 5 v in DK.

Thanks,

Syam

RE: sd card mounting using FATFS example

Stian Røed Hafskjold — Mon, 03 Dec 2018 13:34:22 GMT

Seems like the voltage on VDD on the DK is too low for some SD cards. Try to use a 3.3V external power source.

RE: sd card mounting using FATFS example

samkris — Thu, 29 Nov 2018 15:48:00 GMT

Iam using linux ubuntu machine and checked in disks utility in that and there is no partitions in SD CARDS.it is showing 30mb for all the sd cards I have tested.In code only sdcards 8 gb and 4 gb is getting initialized ,64 gb is failing to do the same.I have not checked 16 and 32 gbs.

sam

RE: sd card mounting using FATFS example

Stian Røed Hafskjold — Thu, 29 Nov 2018 15:03:58 GMT

Since it's reporting 30MB, maybe there's a boot partition at the start of the SD card? Did you check the partition table? In windows you can use "Disk Management" to see the disk drives and partitions.