File_ListDir()
File_ListDir(), String * 8
Result String = name of directory
0 = end of list
String * 8 = directory name
Get Currently Listed Directory Name
File_ListDir() is a command used to retrieve the name of the directory currently being processed in a sequential list of directories. It works in conjunction with File_ListReset() and other file listing commands to allow you to loop through directories on an SD card or other storage media.
Example:
File_ListDir()
How It Works:
• File_ListDir() is used to get the name of the directory at the current position in the list. After calling this command, the internal counter is automatically incremented, moving to the next directory in the list.
• It returns a string with the directory name. If there are no more directories, it returns 0 to indicate the end of the list.
Important Notes:
• End of List: When there are no more directories to list, File_ListDir() returns 0, signaling the end of the list.
• Directory Names: The directory names are retrieved in the order they are found in the FAT table.
• File List Reset: Always reset the list with File_ListReset() before using File_ListDir() to ensure you start from the beginning of the directory list.
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TftSetUp(0) 'Set screen TftResetScreen(BLACK) 'Reset screen TftSetSndFont(0,0) 'Set Font0 While File_Init() <> cErrOK : Wend 'Initialize SD Card TftPrintSndString("Sd Initialization OK",1,0,0,1,GREEN,BLACK,0) 'Confirm Initialize SD Card bCounter = 27 'Vertical print counter File_ListReset() 'Reset file/folder counter Do Clear sString sString = File_ListDir() 'Loop through folder names If sString = 0 Then Break 'Break if end of list TftPrintSndString(sString,1,0,bCounter,1,GREEN,BLACK,0) 'Print folder name Dec bCounter 'Move to next print line Loop bCounter = 27 'Vertical print counter File_ListReset() 'Reset file/folder counter Do 'Loop through file names Clear sString sString = File_ListFile() If sString = 0 Then Break 'Break if end of list TftPrintSndString(sString,1,20,bCounter,1,WHITE,BLACK,0) 'Print folder name Dec bCounter 'Move to next print line Loop |
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