wearleveling.c

嵌入式文件系统 ucfs.包含全部源代码

/*
**********************************************************************
*                          Micrium, Inc.
*                      949 Crestview Circle
*                     Weston,  FL 33327-1848
*
*                            uC/FS
*
*             (c) Copyright 2001 - 2003, Micrium, Inc.
*                      All rights reserved.
*
***********************************************************************

----------------------------------------------------------------------
File        : WearLeveling.c
Purpose     : Sample program demonstrating wear leveling
---------------------------END-OF-HEADER------------------------------
*/

#include "fs_api.h"
#include <stdio.h>

void MainTask(void);

#if FS_USE_FLASH_DRIVER    // This application can be used with flash driver only



/*********************************************************************
*
*       Static functions
*
**********************************************************************
*/




/*********************************************************************
*
*       _CreateBigFile()
*/
static void _CreateBigFile(void) {
  int i;
  FS_FILE * pFile;
  FS_U8 acData[0x20000];

  //
  // Create static dummy file first
  //
  FS_X_Log("Creating static dummy file\n");
  pFile = FS_FOpen("Dummy.txt", "w");
  if (!pFile) {
    FS_ErrorOut("Could not write file");
  }
  for (i = 0; i < 5; i++) {
    FS_FWrite(acData, sizeof(acData), 1, pFile);
  }
  FS_FClose(pFile);

}


/*********************************************************************
*
*       _Stress()
*/
static void _StressRandom(void) {
  int i;
  FS_FILE * pFile;
  FS_FLASH_DISK_INFO DiskInfo;
  FS_U8 acData[0x20000];

  FS_FLASH_GetDiskInfo(0, &DiskInfo);


  FS_X_Log("Writing into file\n");
  pFile = FS_FOpen("Test.txt", "w");
  if (!pFile) {
    FS_ErrorOut("Could not write file");
  }
  for (i = 0; i < 5000; i++) {
    FS_FWrite("Test file\r\n", 11, 1, pFile);
  }
  FS_FClose(pFile);


  FS_X_Log("Writing sector");
  for (i = 0; i < 5000; i++) {
    FS_IoCtl("flash:",FS_CMD_WRITE_SECTOR, DiskInfo.NumLogSectors -1, acData);
  }
}


/*********************************************************************
*
*       _Init()
*/
static void _Init(void) {
  if (FS_IoCtl("flash:", FS_CMD_REQUIRES_FORMAT, 0, 0)) {
    FS_IoCtl("flash:", FS_CMD_FORMAT_LOW_LEVEL, 0, 0);  /* Erase & Low-level  format the flash */
    FS_IoCtl("flash:", FS_CMD_FORMAT_AUTO, 0, 0);       /* High-level format the flash */
  }
}


/*********************************************************************
*
*       _ShowInfo()
*/
static void _ShowInfo(void) {
  char ac[200];
  int i;
  FS_FLASH_DISK_INFO DiskInfo;

  FS_FLASH_GetDiskInfo(0, &DiskInfo);
  FS_X_Log("******************************************************************\n");
  sprintf(ac, "Number of phys. sectors: %d\n", DiskInfo.NumPhysSectors);
  FS_X_Log(ac);
  sprintf(ac, "Number of log.  sectors: %d (%dkB raw)\n", DiskInfo.NumLogSectors, DiskInfo.NumLogSectors /2);
  FS_X_Log(ac);
  sprintf(ac, "Used      log.  sectors: %d (%dkB raw)\n", DiskInfo.NumUsedSectors, DiskInfo.NumUsedSectors /2);
  FS_X_Log(ac);
  for (i = 0; i < (int)DiskInfo.NumPhysSectors; i++) {
    FS_FLASH_SECTOR_INFO SectorInfo;

    FS_FLASH_GetSectorInfo(0, i, &SectorInfo);
    sprintf(ac, "Sector %.2d: %dkB @ %.8X - ECnt: %d Log.sectors: (T=%d, U=%d, F=%d, E=%d)\n",
                 i, SectorInfo.Size / 1024, SectorInfo.Off, SectorInfo.EraseCnt
                 , SectorInfo.NumUsedSectors + SectorInfo.NumFreeSectors + SectorInfo.NumEraseableSectors
                 , SectorInfo.NumUsedSectors, SectorInfo.NumFreeSectors, SectorInfo.NumEraseableSectors
                 );
    FS_X_Log(ac);
  }
}


/*********************************************************************
*
*       Global functions
*
**********************************************************************
*/

/*********************************************************************
*
*       MainTask()
*/
void MainTask(void) {
  int i;
  /* buffers used to read and write to file */
  char acWriteText[20] = "Hello World";
  _Init();
  _ShowInfo();
  _CreateBigFile();
  for (i = 0; i < 10; i++) {
    _ShowInfo();
    _StressRandom();
  }

  


}

#else
void MainTask(void) {
  FS_X_Log("This application requires the flash driver\n");
}
#endif
/*************************** End of file ****************************/