STM32-Player/Libraries/FatFs/drivers/nand_diskio.c

/**
  ******************************************************************************
  * @file    nand_diskio.c
  * @author  MCD Application Team
  * @version V2.0.2
  * @date    10-November-2017
  * @brief   PPP Disk I/O driver generic driver template
             this driver is not functional and is intended to show
	     how to implement a FatFs diskio driver.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics International N.V.
  * All rights reserved.</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted, provided that the following conditions are met:
  *
  * 1. Redistribution of source code must retain the above copyright notice,
  *    this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. Neither the name of STMicroelectronics nor the names of other
  *    contributors to this software may be used to endorse or promote products
  *    derived from this software without specific written permission.
  * 4. This software, including modifications and/or derivative works of this
  *    software, must execute solely and exclusively on microcontroller or
  *    microprocessor devices manufactured by or for STMicroelectronics.
  * 5. Redistribution and use of this software other than as permitted under
  *    this license is void and will automatically terminate your rights under
  *    this license.
  *
  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include <string.h>
#include "ff_gen_drv.h"
#include "nand_diskio.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Block Size in Bytes */
/* Private variables ---------------------------------------------------------*/
/* Disk status */
static volatile DSTATUS Stat = STA_NOINIT;

/* Private function prototypes -----------------------------------------------*/
DSTATUS nand_initialize (BYTE);
DSTATUS nand_status (BYTE);
DRESULT nand_read (BYTE, BYTE*, DWORD, UINT);
#if _USE_WRITE == 1
  DRESULT nand_write (BYTE, const BYTE*, DWORD, UINT);
#endif /* _USE_WRITE == 1 */
#if _USE_IOCTL == 1
  DRESULT nand_ioctl (BYTE, BYTE, void*);
#endif  /* _USE_IOCTL == 1 */

const Diskio_drvTypeDef  nand_Driver =
{
  nand_initialize,
  nand_status,
  nand_read,
#if  _USE_WRITE == 1
  nand_write,
#endif /* _USE_WRITE == 1 */

#if  _USE_IOCTL == 1
  nand_ioctl,
#endif /* _USE_IOCTL == 1 */
};

/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Initializes a Drive
  * @param  lun : not used
  * @retval DSTATUS: Operation status
  */
DSTATUS nand_initialize(BYTE lun)
{
  Stat = STA_NOINIT;

  /* Configure the uPPP device */
  if(NAND_Init() == NAND_OK)
  {
    Stat &= ~STA_NOINIT;
  }

  return Stat;
}

/**
  * @brief  Gets Disk Status
  * @param  lun : not used
  * @retval DSTATUS: Operation status
  */
DSTATUS nand_status(BYTE lun)
{
	DRESULT res = RES_OK;

	return res;
}

/**
  * @brief  Reads Sector(s)
  * @param  lun : not used
  * @param  *buff: Data buffer to store read data
  * @param  sector: Sector address (LBA)
  * @param  count: Number of sectors to read (1..128)
  * @retval DRESULT: Operation result
  */
DRESULT nand_read(BYTE lun, BYTE *buff, DWORD sector, UINT count)
{
	DRESULT res = RES_OK;

	if (NAND_OK == NAND_ReadMultiSectors(buff, sector, 512, count))
	{
		res = RES_OK;
	}
	else
	{
		res = RES_ERROR;
	}
	
	return res;
}

/**
  * @brief  Writes Sector(s)
  * @param  lun : not used
  * @param  *buff: Data to be written
  * @param  sector: Sector address (LBA)
  * @param  count: Number of sectors to write (1..128)
  * @retval DRESULT: Operation result
  */
#if _USE_WRITE == 1
DRESULT nand_write(BYTE lun, const BYTE *buff, DWORD sector, UINT count)
{
	DRESULT res = RES_OK;

	if (NAND_OK != NAND_WriteMultiSectors((uint8_t *)buff, sector, 512, count))  
	{
		res = RES_ERROR;
	}
	return res;
}
#endif /* _USE_WRITE == 1 */

/**
  * @brief  I/O control operation
  * @param  lun : not used
  * @param  cmd: Control code
  * @param  *buff: Buffer to send/receive control data
  * @retval DRESULT: Operation result
  */
#if _USE_IOCTL == 1
DRESULT nand_ioctl(BYTE lun, BYTE cmd, void *buff)
{
	DRESULT res = RES_ERROR;

	switch (cmd)
	{
		/* Make sure that no pending write process */
		case CTRL_SYNC :
			res = RES_OK;
			break;

		/* Get number of sectors on the disk (DWORD) */
		case GET_SECTOR_COUNT :
			*(DWORD*)buff = NAND_FormatCapacity() / 512;	/* <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD>õ<EFBFBD><C3B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>оƬ<D0BE><C6AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
			res = RES_OK;
			break;

		/* Get R/W sector size (WORD) */
		case GET_SECTOR_SIZE :
			*(WORD*)buff = 512;
			res = RES_OK;
			break;

		/* Get erase block size in unit of sector (DWORD) */
		case GET_BLOCK_SIZE :
			*(DWORD*)buff = 512;
			res = RES_OK;
			break;

		default:
			res = RES_PARERR;
			break;
	}

	return res;
}
#endif /* _USE_IOCTL == 1 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/