fatfs/documents/res/app6.c

   1 /*---------------------------------------------------------------------*/
   2 /* Raw Read/Write Throughput Checker                                   */
   3 /*---------------------------------------------------------------------*/
   4
   5 #include <stdio.h>
   6 #include <systimer.h>
   7 #include "diskio.h"
   8 #include "ff.h"
   9
  10
  11 int test_raw_speed (
  12     BYTE pdrv,      /* Physical drive number */
  13     DWORD lba,      /* Start LBA for read/write test */
  14     DWORD len,      /* Number of bytes to read/write (must be multiple of sz_buff) */
  15     void* buff,     /* Read/write buffer */
  16     UINT sz_buff    /* Size of read/write buffer (must be multiple of FF_MAX_SS) */
  17 )
  18 {
  19     WORD ss;
  20     DWORD ofs, tmr;
  21
  22
  23 #if FF_MIN_SS != FF_MAX_SS
  24     if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &ss) != RES_OK) {
  25         printf("\ndisk_ioctl() failed.\n");
  26         return 0;
  27     }
  28 #else
  29     ss = FF_MAX_SS;
  30 #endif
  31
  32     printf("Starting raw write test at sector %lu in %u bytes of data chunks...", lba, sz_buff);
  33     tmr = systimer();
  34     for (ofs = 0; ofs < len / ss; ofs += sz_buff / ss) {
  35         if (disk_write(pdrv, buff, lba + ofs, sz_buff / ss) != RES_OK) {
  36             printf("\ndisk_write() failed.\n");
  37             return 0;
  38         }
  39     }
  40     if (disk_ioctl(pdrv, CTRL_SYNC, 0) != RES_OK) {
  41         printf("\ndisk_ioctl() failed.\n");
  42         return 0;
  43     }
  44     tmr = systimer() - tmr;
  45     printf("\n%lu bytes written and it took %lu timer ticks.\n", len, tmr);
  46
  47     printf("Starting raw read test at sector %lu in %u bytes of data chunks...", lba, sz_buff);
  48     tmr = systimer();
  49     for (ofs = 0; ofs < len / ss; ofs += sz_buff / ss) {
  50         if (disk_read(pdrv, buff, lba + ofs, sz_buff / ss) != RES_OK) {
  51             printf("\ndisk_read() failed.\n");
  52             return 0;
  53         }
  54     }
  55     tmr = systimer() - tmr;
  56     printf("\n%lu bytes read and it took %lu timer ticks.\n", len, tmr);
  57
  58     printf("Test completed.\n");
  59     return 1;
  60 }
  61