Hello,
I want to delete all files in folder, I use Arduino Mega2560 and SD card module, I've tried for-each loop but number of files should be less than 30 in folder! I've increased stack buffer size from 1500 to 2000 but it made things go worse. Any ideas how to do that?
Thanks
I want to delete all files in folder, I use Arduino Mega2560 and SD card module, I've tried for-each loop but number of files should be less than 30 in folder! I've increased stack buffer size from 1500 to 2000 but it made things go worse. Any ideas how to do that?
B4X:
private Sub DeleteFilesInFolder(FolderName As String) As String
If Not(SD.Exists(FolderName)) Then
Return ERR_NOT_FOUND
End If
LCD.Clear
PutString(0,1,"Please Wait...",True)
Dim MaxF As Byte = 0
For Each f As File In SD.ListFiles(FolderName)
'Log(GetFullFileName(f.Name,FolderName))
SD.Remove(GetFullFileName(f.Name,FolderName))
MaxF = MaxF + 1
If MaxF > 30 Then 'stack overflow if number of files is > 30
LCD.Clear
Return ERR_MAX_STACK_OR_BUFFER_SIZE
End If
Next
LCD.Clear
Return True
End Sub
Private Sub GetFullFileName(FileName As String, FolderName As String) As String
Dim FullFileName As String
Private raf As RandomAccessFile
Dim FileNameArr (FileName.Length + FolderName.Length + 1) As Byte
raf.Initialize(FileNameArr, True)
raf.WriteBytes(FolderName, 0, FolderName.Length, raf.CurrentPosition)
raf.WriteBytes("/", 0, 1, raf.CurrentPosition)
raf.WriteBytes(FileName, 0, FileName.Length, raf.CurrentPosition)
FullFileName = BC.StringFromBytes(FileNameArr)
Return FullFileName
End SubThanks
Last edited: