B4R Question Clear ESP8266 files on flash

[bdunkleysmith]

I am working on an application in which I save SSID passwords to individual files on the ESP8266 using rESP8266FileSystem.

During development I appear to have accidentally created a file with a null file name which is 8 bytes long, in addition to another valid file as indicated by the result when I run

Sub ListFiles
    Log("Listing password files:")
    For Each f As File In fs.ListFiles("")
        Log("Name: ", f.Name, ", Size: ", f.Size)
    Next
End Sub

Listing password files:
Name: , Size: 8
Name: Telstra1943, Size: 8

Having a null file name apparently means this code

For Each f As File In fs.ListFiles("")
    fs.Remove(f.Name)
Next

fails or at least doesn't delete the file.

Any suggestions as to how I can clear the files from the flash - it doesn't matter if I have to delete any valid files in the process because I can recreate those once the filesystem is purged.

Thanks in anticipation of suggestions.

 

[tigrot]

Once I created on a windows 10 folder a file with 0 size. I've been trying to delete it for years, with no success. I've tryed to use some utilty as well. Same result. Seems I've to format drive again to get rid of it. I'll do when I'll grow up!
I think that formating will solve: http://esp8266.github.io/Arduino/versions/2.0.0/doc/filesystem.html for your reference

 

[bdunkleysmith]

Thanks Tigrot. I overlooked the Format function of the rESP8266FileSystem library and following your suggestion I have now successfully used that to solve my problem.

 

[Johan Hormaza]

And to create and fill a file ".txt"

 

[tigrot]

rESP8266FileSystem

Use this library to write on flash, open file, write and close as usual. I personally use a sd card.

 

[Johan Hormaza]

Use this library to write on flash, open file, write and close as usual. I personally use a sd card.

But how could I create a file. Thank you!

 

[tigrot]

Look https://www.b4x.com/android/forum/threads/resp8266filesystem-spiffs.76487/

 

[tigrot]

https://www.b4x.com/android/forum/threads/rsd-openreadwrite.67384/
Is related to sd, but the syntax is almost the same.