I am having a very difficult time trying to read the file directory using the code I got from the web. I am able to get most SD card functions to work and I actually get the read directory function to work the first time but it only reads 6 of the 10 files on the directory after I do one read it no longer will read the file directory because when I do. if (res == FR_OK) I get a error code: FR_TOO_MANY_OPEN_FILES so I can no longer read the file directory...Any ideas as to what may be causing this issue?? I got more of the code from: https://github.com/eziya/STM32_SPI_SDCARD.
Unfortunately where I downloaded the SDfat files there is no place to ask any questions or post for help.Any suggestions will be greatly appreciated.
The lines of code in question are below:
if(response == '5')
{
printf("\n\rFile directory contains: \n\r"); // %s \n\r",buff);
f_mount(&fs, "",0);
if(fresult == FR_OK) { // gives me -------> 'FR_TOO_MANY_OPEN_FILES" after first read of directory so it will not read
fresult = scan_files(buff); }
printf("Total Space on this SD disk: %lu \n\r", totalSpace);
printf("Total Free Space on this SD disk: %u \n\r", freeSpace);
}
FRESULT scan_files (char* path) /* Start node to be scanned (***also used as work area***) */
{
FRESULT res;
DIR dir;
UINT i;
static FILINFO fno;
res = f_opendir(&dir, path); /* Open the directory */
if (res == FR_OK) {
for (;;) {
res = f_readdir(&dir, &fno); /* Read a directory item */
if (res != FR_OK || fno.fname[0] == 0) break; /* Break on error or end of dir */
if (fno.fattrib & AM_DIR) { /* It is a directory */
i = strlen(path);
sprintf(&path[i], "/%s", fno.fname);
res = scan_files(path); /* Enter the directory */
if (res != FR_OK) break;
path[i] = 0;
} else { /* It is a file. */
printf("%s/%s\n\r", path, fno.fname);
}
}
f_closedir(&dir);
}
////////////////// get disk space parameters ////////////////
f_getfree("", &fre_clust, &pfs);
totalSpace = (uint32_t)((pfs->n_fatent - 2) * pfs->csize * 0.5);
freeSpace = (uint32_t)(fre_clust * pfs->csize * 0.5);
return res;
}
