diff options
author | Leo C | 2018-05-27 21:26:38 +0200 |
---|---|---|
committer | Leo C | 2018-05-27 21:26:38 +0200 |
commit | 289f6a146c0b2087607d8d8659531ea90142779a (patch) | |
tree | 37b0e9e341a4112582ccda4b8e22d4b2c4a6ee21 /fatfs/documents/res | |
parent | 70702af1370e44e32fb2c3c507e4759a187b4fe5 (diff) | |
download | z180-stamp-289f6a146c0b2087607d8d8659531ea90142779a.zip |
Import fatfs R0.13bfatfs-0.13b
Diffstat (limited to 'fatfs/documents/res')
22 files changed, 532 insertions, 0 deletions
diff --git a/fatfs/documents/res/app1.c b/fatfs/documents/res/app1.c new file mode 100644 index 0000000..85275e1 --- /dev/null +++ b/fatfs/documents/res/app1.c @@ -0,0 +1,44 @@ +/*------------------------------------------------------------/
+/ Open or create a file in append mode
+/ (This function was sperseded by FA_OPEN_APPEND flag at FatFs R0.12a)
+/------------------------------------------------------------*/
+
+FRESULT open_append (
+ FIL* fp, /* [OUT] File object to create */
+ const char* path /* [IN] File name to be opened */
+)
+{
+ FRESULT fr;
+
+ /* Opens an existing file. If not exist, creates a new file. */
+ fr = f_open(fp, path, FA_WRITE | FA_OPEN_ALWAYS);
+ if (fr == FR_OK) {
+ /* Seek to end of the file to append data */
+ fr = f_lseek(fp, f_size(fp));
+ if (fr != FR_OK)
+ f_close(fp);
+ }
+ return fr;
+}
+
+
+int main (void)
+{
+ FRESULT fr;
+ FATFS fs;
+ FIL fil;
+
+ /* Open or create a log file and ready to append */
+ f_mount(&fs, "", 0);
+ fr = open_append(&fil, "logfile.txt");
+ if (fr != FR_OK) return 1;
+
+ /* Append a line */
+ f_printf(&fil, "%02u/%02u/%u, %2u:%02u\n", Mday, Mon, Year, Hour, Min);
+
+ /* Close the file */
+ f_close(&fil);
+
+ return 0;
+}
+
diff --git a/fatfs/documents/res/app2.c b/fatfs/documents/res/app2.c new file mode 100644 index 0000000..3de3eee --- /dev/null +++ b/fatfs/documents/res/app2.c @@ -0,0 +1,68 @@ +/*------------------------------------------------------------/
+/ Remove all contents of a directory
+/ This function works regardless of FF_FS_RPATH.
+/------------------------------------------------------------*/
+
+
+FILINFO fno;
+
+FRESULT empty_directory (
+ char* path /* Working buffer filled with start directory */
+)
+{
+ UINT i, j;
+ FRESULT fr;
+ DIR dir;
+
+ fr = f_opendir(&dir, path);
+ if (fr == FR_OK) {
+ for (i = 0; path[i]; i++) ;
+ path[i++] = '/';
+ for (;;) {
+ fr = f_readdir(&dir, &fno);
+ if (fr != FR_OK || !fno.fname[0]) break;
+ if (_FS_RPATH && fno.fname[0] == '.') continue;
+ j = 0;
+ do
+ path[i+j] = fno.fname[j];
+ while (fno.fname[j++]);
+ if (fno.fattrib & AM_DIR) {
+ fr = empty_directory(path);
+ if (fr != FR_OK) break;
+ }
+ fr = f_unlink(path);
+ if (fr != FR_OK) break;
+ }
+ path[--i] = '\0';
+ closedir(&dir);
+ }
+
+ return fr;
+}
+
+
+
+int main (void)
+{
+ FRESULT fr;
+ FATFS fs;
+ char buff[256]; /* Working buffer */
+
+
+
+ f_mount(&fs, "", 0);
+
+ strcpy(buff, "/"); /* Directory to be emptied */
+ fr = empty_directory(buff);
+
+ if (fr) {
+ printf("Function failed. (%u)\n", fr);
+ return fr;
+ } else {
+ printf("All contents in the %s are successfully removed.\n", buff);
+ return 0;
+ }
+}
+
+
+
diff --git a/fatfs/documents/res/app3.c b/fatfs/documents/res/app3.c new file mode 100644 index 0000000..523058f --- /dev/null +++ b/fatfs/documents/res/app3.c @@ -0,0 +1,109 @@ +/*----------------------------------------------------------------------/
+/ Allocate a contiguous area to the file
+/-----------------------------------------------------------------------/
+/ This function checks if the file is contiguous with desired size.
+/ If not, a block of contiguous sectors is allocated to the file.
+/ If the file has been opened without FA_WRITE flag, it only checks if
+/ the file is contiguous and returns the resulut.
+/-----------------------------------------------------------------------/
+/ This function can work with FatFs R0.09 - R0.11a.
+/ It is incompatible with R0.12+. Use f_expand function instead.
+/----------------------------------------------------------------------*/
+
+/* Declarations of FatFs internal functions accessible from applications.
+/ This is intended to be used for disk checking/fixing or dirty hacks :-) */
+DWORD clust2sect (FATFS* fs, DWORD clst);
+DWORD get_fat (FATFS* fs, DWORD clst);
+FRESULT put_fat (FATFS* fs, DWORD clst, DWORD val);
+
+
+DWORD allocate_contiguous_clusters ( /* Returns the first sector in LBA (0:error or not contiguous) */
+ FIL* fp, /* Pointer to the open file object */
+ DWORD len /* Number of bytes to allocate */
+)
+{
+ DWORD csz, tcl, ncl, ccl, cl;
+
+
+ if (f_lseek(fp, 0) || !len) /* Check if the given parameters are valid */
+ return 0;
+ csz = 512UL * fp->fs->csize; /* Cluster size in unit of byte (assuming 512 bytes/sector) */
+ tcl = (len + csz - 1) / csz; /* Total number of clusters required */
+ len = tcl * csz; /* Round-up file size to the cluster boundary */
+
+ /* Check if the existing cluster chain is contiguous */
+ if (len == fp->fsize) {
+ ncl = 0; ccl = fp->sclust;
+ do {
+ cl = get_fat(fp->fs, ccl); /* Get the cluster status */
+ if (cl + 1 < 3) return 0; /* Hard error? */
+ if (cl != ccl + 1 && cl < fp->fs->n_fatent) break; /* Not contiguous? */
+ ccl = cl;
+ } while (++ncl < tcl);
+ if (ncl == tcl) /* Is the file contiguous? */
+ return clust2sect(fp->fs, fp->sclust); /* File is contiguous. Return the start sector */
+ }
+
+ /* File is not contiguous */
+#if _FS_READONLY
+ return 0; /* Exit if in read-only cfg. */
+#else
+ if (!(fp->flag & FA_WRITE)) return 0; /* Exit if the file object is for read-only */
+
+ if (f_truncate(fp)) return 0; /* Remove the non-contiguous chain */
+
+ /* Find a free contiguous area */
+ ccl = cl = 2; ncl = 0;
+ do {
+ if (cl >= fp->fs->n_fatent) return 0; /* No contiguous area is found. */
+ if (get_fat(fp->fs, cl)) { /* Encounterd a cluster in use */
+ do { /* Skip the block of used clusters */
+ cl++;
+ if (cl >= fp->fs->n_fatent) return 0; /* No contiguous area is found. */
+ } while (get_fat(fp->fs, cl));
+ ccl = cl; ncl = 0;
+ }
+ cl++; ncl++;
+ } while (ncl < tcl);
+
+ /* Create a contiguous cluster chain */
+ fp->fs->last_clust = ccl - 1;
+ if (f_lseek(fp, len)) return 0;
+
+ return clust2sect(fp->fs, fp->sclust); /* Return file start sector */
+#endif
+}
+
+
+int main (void)
+{
+ FRESULT fr;
+ DRESULT dr;
+ FATFS fs;
+ FIL fil;
+ DWORD org;
+
+
+ /* Open or create a file to write */
+ f_mount(&fs, "", 0);
+ fr = f_open(&fil, "fastrec.log", FA_READ | FA_WRITE | FA_OPEN_ALWAYS);
+ if (fr) return 1;
+
+ /* Check if the file is 256MB in size and occupies a contiguous area.
+ / If not, a contiguous area will be re-allocated to the file. */
+ org = allocate_contiguous_clusters(&fil, 0x10000000);
+ if (!org) {
+ printf("Function failed due to any error or insufficient contiguous area.\n");
+ f_close(&fil);
+ return 1;
+ }
+
+ /* Now you can read/write the file without filesystem layer. */
+ ...
+ dr = disk_write(fil.fs->drv, Buff, org, 1024); /* Write 512KiB from top of the file */
+ ...
+
+ f_close(&fil);
+ return 0;
+}
+
diff --git a/fatfs/documents/res/app4.c b/fatfs/documents/res/app4.c new file mode 100644 index 0000000..4209f39 --- /dev/null +++ b/fatfs/documents/res/app4.c @@ -0,0 +1,311 @@ +/*----------------------------------------------------------------------/
+/ Low level disk I/O module function checker /
+/-----------------------------------------------------------------------/
+/ WARNING: The data on the target drive will be lost!
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include "ff.h" /* Declarations of sector size */
+#include "diskio.h" /* Declarations of disk functions */
+
+
+static
+DWORD pn ( /* Pseudo random number generator */
+ DWORD pns /* 0:Initialize, !0:Read */
+)
+{
+ static DWORD lfsr;
+ UINT n;
+
+
+ if (pns) {
+ lfsr = pns;
+ for (n = 0; n < 32; n++) pn(0);
+ }
+ if (lfsr & 1) {
+ lfsr >>= 1;
+ lfsr ^= 0x80200003;
+ } else {
+ lfsr >>= 1;
+ }
+ return lfsr;
+}
+
+
+int test_diskio (
+ BYTE pdrv, /* Physical drive number to be checked (all data on the drive will be lost) */
+ UINT ncyc, /* Number of test cycles */
+ DWORD* buff, /* Pointer to the working buffer */
+ UINT sz_buff /* Size of the working buffer in unit of byte */
+)
+{
+ UINT n, cc, ns;
+ DWORD sz_drv, lba, lba2, sz_eblk, pns = 1;
+ WORD sz_sect;
+ BYTE *pbuff = (BYTE*)buff;
+ DSTATUS ds;
+ DRESULT dr;
+
+
+ printf("test_diskio(%u, %u, 0x%08X, 0x%08X)\n", pdrv, ncyc, (UINT)buff, sz_buff);
+
+ if (sz_buff < _MAX_SS + 4) {
+ printf("Insufficient work area to run program.\n");
+ return 1;
+ }
+
+ for (cc = 1; cc <= ncyc; cc++) {
+ printf("**** Test cycle %u of %u start ****\n", cc, ncyc);
+
+ printf(" disk_initalize(%u)", pdrv);
+ ds = disk_initialize(pdrv);
+ if (ds & STA_NOINIT) {
+ printf(" - failed.\n");
+ return 2;
+ } else {
+ printf(" - ok.\n");
+ }
+
+ printf("**** Get drive size ****\n");
+ printf(" disk_ioctl(%u, GET_SECTOR_COUNT, 0x%08X)", pdrv, (UINT)&sz_drv);
+ sz_drv = 0;
+ dr = disk_ioctl(pdrv, GET_SECTOR_COUNT, &sz_drv);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 3;
+ }
+ if (sz_drv < 128) {
+ printf("Failed: Insufficient drive size to test.\n");
+ return 4;
+ }
+ printf(" Number of sectors on the drive %u is %lu.\n", pdrv, sz_drv);
+
+#if FF_MAX_SS != FF_MIN_SS
+ printf("**** Get sector size ****\n");
+ printf(" disk_ioctl(%u, GET_SECTOR_SIZE, 0x%X)", pdrv, (UINT)&sz_sect);
+ sz_sect = 0;
+ dr = disk_ioctl(pdrv, GET_SECTOR_SIZE, &sz_sect);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 5;
+ }
+ printf(" Size of sector is %u bytes.\n", sz_sect);
+#else
+ sz_sect = FF_MAX_SS;
+#endif
+
+ printf("**** Get block size ****\n");
+ printf(" disk_ioctl(%u, GET_BLOCK_SIZE, 0x%X)", pdrv, (UINT)&sz_eblk);
+ sz_eblk = 0;
+ dr = disk_ioctl(pdrv, GET_BLOCK_SIZE, &sz_eblk);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ }
+ if (dr == RES_OK || sz_eblk >= 2) {
+ printf(" Size of the erase block is %lu sectors.\n", sz_eblk);
+ } else {
+ printf(" Size of the erase block is unknown.\n");
+ }
+
+ /* Single sector write test */
+ printf("**** Single sector write test 1 ****\n");
+ lba = 0;
+ for (n = 0, pn(pns); n < sz_sect; n++) pbuff[n] = (BYTE)pn(0);
+ printf(" disk_write(%u, 0x%X, %lu, 1)", pdrv, (UINT)pbuff, lba);
+ dr = disk_write(pdrv, pbuff, lba, 1);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 6;
+ }
+ printf(" disk_ioctl(%u, CTRL_SYNC, NULL)", pdrv);
+ dr = disk_ioctl(pdrv, CTRL_SYNC, 0);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 7;
+ }
+ memset(pbuff, 0, sz_sect);
+ printf(" disk_read(%u, 0x%X, %lu, 1)", pdrv, (UINT)pbuff, lba);
+ dr = disk_read(pdrv, pbuff, lba, 1);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 8;
+ }
+ for (n = 0, pn(pns); n < sz_sect && pbuff[n] == (BYTE)pn(0); n++) ;
+ if (n == sz_sect) {
+ printf(" Data matched.\n");
+ } else {
+ printf("Failed: Read data differs from the data written.\n");
+ return 10;
+ }
+ pns++;
+
+ printf("**** Multiple sector write test ****\n");
+ lba = 1; ns = sz_buff / sz_sect;
+ if (ns > 4) ns = 4;
+ for (n = 0, pn(pns); n < (UINT)(sz_sect * ns); n++) pbuff[n] = (BYTE)pn(0);
+ printf(" disk_write(%u, 0x%X, %lu, %u)", pdrv, (UINT)pbuff, lba, ns);
+ dr = disk_write(pdrv, pbuff, lba, ns);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 11;
+ }
+ printf(" disk_ioctl(%u, CTRL_SYNC, NULL)", pdrv);
+ dr = disk_ioctl(pdrv, CTRL_SYNC, 0);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 12;
+ }
+ memset(pbuff, 0, sz_sect * ns);
+ printf(" disk_read(%u, 0x%X, %lu, %u)", pdrv, (UINT)pbuff, lba, ns);
+ dr = disk_read(pdrv, pbuff, lba, ns);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 13;
+ }
+ for (n = 0, pn(pns); n < (UINT)(sz_sect * ns) && pbuff[n] == (BYTE)pn(0); n++) ;
+ if (n == (UINT)(sz_sect * ns)) {
+ printf(" Data matched.\n");
+ } else {
+ printf("Failed: Read data differs from the data written.\n");
+ return 14;
+ }
+ pns++;
+
+ printf("**** Single sector write test (misaligned address) ****\n");
+ lba = 5;
+ for (n = 0, pn(pns); n < sz_sect; n++) pbuff[n+3] = (BYTE)pn(0);
+ printf(" disk_write(%u, 0x%X, %lu, 1)", pdrv, (UINT)(pbuff+3), lba);
+ dr = disk_write(pdrv, pbuff+3, lba, 1);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 15;
+ }
+ printf(" disk_ioctl(%u, CTRL_SYNC, NULL)", pdrv);
+ dr = disk_ioctl(pdrv, CTRL_SYNC, 0);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 16;
+ }
+ memset(pbuff+5, 0, sz_sect);
+ printf(" disk_read(%u, 0x%X, %lu, 1)", pdrv, (UINT)(pbuff+5), lba);
+ dr = disk_read(pdrv, pbuff+5, lba, 1);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 17;
+ }
+ for (n = 0, pn(pns); n < sz_sect && pbuff[n+5] == (BYTE)pn(0); n++) ;
+ if (n == sz_sect) {
+ printf(" Data matched.\n");
+ } else {
+ printf("Failed: Read data differs from the data written.\n");
+ return 18;
+ }
+ pns++;
+
+ printf("**** 4GB barrier test ****\n");
+ if (sz_drv >= 128 + 0x80000000 / (sz_sect / 2)) {
+ lba = 6; lba2 = lba + 0x80000000 / (sz_sect / 2);
+ for (n = 0, pn(pns); n < (UINT)(sz_sect * 2); n++) pbuff[n] = (BYTE)pn(0);
+ printf(" disk_write(%u, 0x%X, %lu, 1)", pdrv, (UINT)pbuff, lba);
+ dr = disk_write(pdrv, pbuff, lba, 1);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 19;
+ }
+ printf(" disk_write(%u, 0x%X, %lu, 1)", pdrv, (UINT)(pbuff+sz_sect), lba2);
+ dr = disk_write(pdrv, pbuff+sz_sect, lba2, 1);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 20;
+ }
+ printf(" disk_ioctl(%u, CTRL_SYNC, NULL)", pdrv);
+ dr = disk_ioctl(pdrv, CTRL_SYNC, 0);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 21;
+ }
+ memset(pbuff, 0, sz_sect * 2);
+ printf(" disk_read(%u, 0x%X, %lu, 1)", pdrv, (UINT)pbuff, lba);
+ dr = disk_read(pdrv, pbuff, lba, 1);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 22;
+ }
+ printf(" disk_read(%u, 0x%X, %lu, 1)", pdrv, (UINT)(pbuff+sz_sect), lba2);
+ dr = disk_read(pdrv, pbuff+sz_sect, lba2, 1);
+ if (dr == RES_OK) {
+ printf(" - ok.\n");
+ } else {
+ printf(" - failed.\n");
+ return 23;
+ }
+ for (n = 0, pn(pns); pbuff[n] == (BYTE)pn(0) && n < (UINT)(sz_sect * 2); n++) ;
+ if (n == (UINT)(sz_sect * 2)) {
+ printf(" Data matched.\n");
+ } else {
+ printf("Failed: Read data differs from the data written.\n");
+ return 24;
+ }
+ } else {
+ printf(" Test skipped.\n");
+ }
+ pns++;
+
+ printf("**** Test cycle %u of %u completed ****\n\n", cc, ncyc);
+ }
+
+ return 0;
+}
+
+
+
+int main (int argc, char* argv[])
+{
+ int rc;
+ DWORD buff[FF_MAX_SS]; /* Working buffer (4 sector in size) */
+
+ /* Check function/compatibility of the physical drive #0 */
+ rc = test_diskio(0, 3, buff, sizeof buff);
+
+ if (rc) {
+ printf("Sorry the function/compatibility test failed. (rc=%d)\nFatFs will not work with this disk driver.\n", rc);
+ } else {
+ printf("Congratulations! The disk driver works well.\n");
+ }
+
+ return rc;
+}
+
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