FATFS: show all files

[mfrank9]

Hi,

is it possibility to show a list of files and folders with the fatfs library?

Like "ls" in the console.

[SBEN .2]

Hello @mfrank9​ ,

It is possible to recursively travers the file tree using FATFS and display its content using f_readdir(). A limited example, for inspiration, can be found in the implementation of kStorage_GetDirectoryFiles() (See here) in the STM32G474E-EVAL demonstration project.

Best regards,

@SBEN .2​ 

[Tesla DeLorean · Accepted solution]

The FatFs library provides you with the means to implement this, but not the code, although you might find some if you look.

Typically a problem that can be solved via recursive, or queued linear, traversal

For a simple single level

puts("Display Directory");
 
  {
    DIR dir;
    char *path;
    UINT BytesWritten;
    char string[128];
 
    path = ""; // where you want to list
 
    res = f_opendir(&dir, path);
 
#ifdef DBG
    if (res != FR_OK)
      printf("res = %d f_opendir\n", res);
#endif
 
    if (res == FR_OK)
    {
      while(1)
      {
        FILINFO fno;
 
        res = f_readdir(&dir, &fno);
 
#ifdef DBG
        if (res != FR_OK)
          printf("res = %d f_readdir\n", res);
#endif
 
        if ((res != FR_OK) || (fno.fname[0] == 0))
          break;
 
        sprintf(string, "%c%c%c%c %10d %s/%s",
          ((fno.fattrib & AM_DIR) ? 'D' : '-'),
          ((fno.fattrib & AM_RDO) ? 'R' : '-'),
          ((fno.fattrib & AM_SYS) ? 'S' : '-'),
          ((fno.fattrib & AM_HID) ? 'H' : '-'),
          (int)fno.fsize, path, fno.fname);
 
        puts(string);
      }
    }
  }

[mfrank9]

Thank you!

That works.

The following lines don't do what they're supposed to, but I don't know why.

This is not a problem as they work when called individually.

        sprintf(string, "%c%c%c%c %10d %s/%s",
          ((fno.fattrib & AM_DIR) ? 'D' : '-'),
          ((fno.fattrib & AM_RDO) ? 'R' : '-'),
          ((fno.fattrib & AM_SYS) ? 'S' : '-'),
          ((fno.fattrib & AM_HID) ? 'H' : '-'),
          (int)fno.fsize, path, fno.fname);

[TBode.1]

Thanks!

Helped me much.