driver_examples of SDK_2.2_LPC54608J512，sdcard-fatfs has erased other files existed in SD

[zhixiangzeng]

When I was doing this demo, I created the file in SD card,  both DIR1 and DIR2 succeeded, but wiped out all the files in my SD card. What's the reason for this? Is there a way not to erase?

[kerryzhou]

Hello zhixiang zeng,

    Do you use the official KSDK sd sample code directly on LPC54608 board?

   Could you give me the details steps which can reproduce your problem? Then I can check and test it on my side.

Have a great day,
Kerry

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[zhixiangzeng]

Hi，there are  1 file and 1 folder  existed my SD card .When after I run the examples "SDK_2.2_LPC54608J512\boards\lpcxpresso54608\driver_examples\sdcard_fatfs",the  both DIR1 and DIR2 succeeded

but  the file test and folder test have been erased.There are only the DIR_1 created by the fatfs.

[kerryzhou]

Hi Zhixiang,

   Just as I have told you, f_mkfs function will do the disc format, more details please check this link:

FatFs - f_mkfs 

Wish it helps you!

Have a great day,
Kerry

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[zhixiangzeng]

How to avoid deleting other  files in my SD card ? Do you have any ideas or suggestions?

[kerryzhou · Accepted solution]

Hello zhixiang,

    Just do this modification:

1. open ffconf.h

   Line 50, change _USE_MKFS to 0.

Disable f_mkfs function

2. New test result

  This is my test result in the SD card.

After point 1 modification, build and download it to the board again.

You can find the folder test and test.txt still exist.

You can try it on your side.

Have a great day,

Kerry

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[zhixiangzeng]

Hi，Kerry！

       I have solved the problem last night, and the modifications I made were the same as you mentioned. Anyway, thank you very much for your support.

[kerryzhou]

Hello Zhixiang,

   You are welcome!

   If your problem is solved, please mark the correct answer to close this case, thank you and have a nice day!

Have a great day,
Kerry

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[kerryzhou]

Hi Zhixiang,

   I already reproduce your problem, and I am working on it, it needs time to process it.

  f_mkfs function will delete all the file in the SD card. I am still checking it.

   Any updated information will let you know, please wait patiently now.

   Thanks a lot for your understanding.

Have a great day,
Kerry

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