ref: 21f5ac6f65245a6d5f1b63b0f1a38d4001f1d5dc
dir: /LEAF/Src/sd_diskio.c/
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file sd_diskio.c
* @brief SD Disk I/O driver
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2019 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under Ultimate Liberty license
* SLA0044, the "License"; You may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* www.st.com/SLA0044
*
******************************************************************************
*/
/* USER CODE END Header */
/* Note: code generation based on sd_diskio_template_bspv1.c v2.1.4
as "Use dma template" is disabled. */
/* USER CODE BEGIN firstSection */
/* can be used to modify / undefine following code or add new definitions */
/* USER CODE END firstSection*/
/* Includes ------------------------------------------------------------------*/
#include "ff_gen_drv.h"
#include "sd_diskio.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* use the default SD timout as defined in the platform BSP driver*/
#if defined(SDMMC_DATATIMEOUT)
#define SD_TIMEOUT SDMMC_DATATIMEOUT
#elif defined(SD_DATATIMEOUT)
#define SD_TIMEOUT SD_DATATIMEOUT
#else
#define SD_TIMEOUT 30 * 1000
#endif
#define SD_DEFAULT_BLOCK_SIZE 512
/*
* Depending on the use case, the SD card initialization could be done at the
* application level: if it is the case define the flag below to disable
* the BSP_SD_Init() call in the SD_Initialize() and add a call to
* BSP_SD_Init() elsewhere in the application.
*/
/* USER CODE BEGIN disableSDInit */
/* #define DISABLE_SD_INIT */
/* USER CODE END disableSDInit */
/* Private variables ---------------------------------------------------------*/
/* Disk status */
static volatile DSTATUS Stat = STA_NOINIT;
/* Private function prototypes -----------------------------------------------*/
static DSTATUS SD_CheckStatus(BYTE lun);
DSTATUS SD_initialize (BYTE);
DSTATUS SD_status (BYTE);
DRESULT SD_read (BYTE, BYTE*, DWORD, UINT);
#if _USE_WRITE == 1
DRESULT SD_write (BYTE, const BYTE*, DWORD, UINT);
#endif /* _USE_WRITE == 1 */
#if _USE_IOCTL == 1
DRESULT SD_ioctl (BYTE, BYTE, void*);
#endif /* _USE_IOCTL == 1 */
const Diskio_drvTypeDef SD_Driver =
{
SD_initialize,
SD_status,
SD_read,
#if _USE_WRITE == 1
SD_write,
#endif /* _USE_WRITE == 1 */
#if _USE_IOCTL == 1
SD_ioctl,
#endif /* _USE_IOCTL == 1 */
};
/* USER CODE BEGIN beforeFunctionSection */
/* can be used to modify / undefine following code or add new code */
/* USER CODE END beforeFunctionSection */
/* Private functions ---------------------------------------------------------*/
static DSTATUS SD_CheckStatus(BYTE lun)
{
Stat = STA_NOINIT;
if(BSP_SD_GetCardState() == MSD_OK)
{
Stat &= ~STA_NOINIT;
}
return Stat;
}
/**
* @brief Initializes a Drive
* @param lun : not used
* @retval DSTATUS: Operation status
*/
DSTATUS SD_initialize(BYTE lun)
{
Stat = STA_NOINIT;
#if !defined(DISABLE_SD_INIT)
if(BSP_SD_Init() == MSD_OK)
{
Stat = SD_CheckStatus(lun);
}
#else
Stat = SD_CheckStatus(lun);
#endif
return Stat;
}
/**
* @brief Gets Disk Status
* @param lun : not used
* @retval DSTATUS: Operation status
*/
DSTATUS SD_status(BYTE lun)
{
return SD_CheckStatus(lun);
}
/* USER CODE BEGIN beforeReadSection */
/* can be used to modify previous code / undefine following code / add new code */
/* USER CODE END beforeReadSection */
/**
* @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 SD_read(BYTE lun, BYTE *buff, DWORD sector, UINT count)
{
DRESULT res = RES_ERROR;
if(BSP_SD_ReadBlocks((uint32_t*)buff,
(uint32_t) (sector),
count, SD_TIMEOUT) == MSD_OK)
{
/* wait until the read operation is finished */
while(BSP_SD_GetCardState()!= MSD_OK)
{
}
res = RES_OK;
}
return res;
}
/* USER CODE BEGIN beforeWriteSection */
/* can be used to modify previous code / undefine following code / add new code */
/* USER CODE END beforeWriteSection */
/**
* @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 SD_write(BYTE lun, const BYTE *buff, DWORD sector, UINT count)
{
DRESULT res = RES_ERROR;
if(BSP_SD_WriteBlocks((uint32_t*)buff,
(uint32_t)(sector),
count, SD_TIMEOUT) == MSD_OK)
{
/* wait until the Write operation is finished */
while(BSP_SD_GetCardState() != MSD_OK)
{
}
res = RES_OK;
}
return res;
}
#endif /* _USE_WRITE == 1 */
/* USER CODE BEGIN beforeIoctlSection */
/* can be used to modify previous code / undefine following code / add new code */
/* USER CODE END beforeIoctlSection */
/**
* @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 SD_ioctl(BYTE lun, BYTE cmd, void *buff)
{
DRESULT res = RES_ERROR;
BSP_SD_CardInfo CardInfo;
if (Stat & STA_NOINIT) return RES_NOTRDY;
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 :
BSP_SD_GetCardInfo(&CardInfo);
*(DWORD*)buff = CardInfo.LogBlockNbr;
res = RES_OK;
break;
/* Get R/W sector size (WORD) */
case GET_SECTOR_SIZE :
BSP_SD_GetCardInfo(&CardInfo);
*(WORD*)buff = CardInfo.LogBlockSize;
res = RES_OK;
break;
/* Get erase block size in unit of sector (DWORD) */
case GET_BLOCK_SIZE :
BSP_SD_GetCardInfo(&CardInfo);
*(DWORD*)buff = CardInfo.LogBlockSize / SD_DEFAULT_BLOCK_SIZE;
res = RES_OK;
break;
default:
res = RES_PARERR;
}
return res;
}
#endif /* _USE_IOCTL == 1 */
/* USER CODE BEGIN afterIoctlSection */
/* can be used to modify previous code / undefine following code / add new code */
/* USER CODE END afterIoctlSection */
/* USER CODE BEGIN lastSection */
/* can be used to modify / undefine previous code or add new code */
/* USER CODE END lastSection */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/