254 lines
8.3 KiB
C
254 lines
8.3 KiB
C
/**
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******************************************************************************
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* @file sd_diskio.c (based on sd_diskio_template.c v2.0.2 as "Use dma template" is disabled)
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* @brief SD Disk I/O driver
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******************************************************************************
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* This notice applies to any and all portions of this file
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* that are not between comment pairs USER CODE BEGIN and
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* USER CODE END. Other portions of this file, whether
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* inserted by the user or by software development tools
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* are owned by their respective copyright owners.
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*
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* Copyright (c) 2018 STMicroelectronics International N.V.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted, provided that the following conditions are met:
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*
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* 1. Redistribution of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of other
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* contributors to this software may be used to endorse or promote products
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* derived from this software without specific written permission.
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* 4. This software, including modifications and/or derivative works of this
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* software, must execute solely and exclusively on microcontroller or
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* microprocessor devices manufactured by or for STMicroelectronics.
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* 5. Redistribution and use of this software other than as permitted under
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* this license is void and will automatically terminate your rights under
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* this license.
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*
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* THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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* PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
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* RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
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* SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* USER CODE BEGIN firstSection */
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/* can be used to modify / undefine following code or add new definitions */
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/* USER CODE END firstSection*/
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/* Includes ------------------------------------------------------------------*/
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#include "sd_diskio.h"
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#include "bsp_driver_sd.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* use the default SD timout as defined in the platform BSP driver*/
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#if defined(SDMMC_DATATIMEOUT)
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#define SD_TIMEOUT SDMMC_DATATIMEOUT
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#elif defined(SD_DATATIMEOUT)
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#define SD_TIMEOUT SD_DATATIMEOUT
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#else
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#define SD_TIMEOUT 30 * 1000
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#endif
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#define SD_DEFAULT_BLOCK_SIZE 512
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/*
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* Depending on the use case, the SD card initialization could be done at the
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* application level: if it is the case define the flag below to disable
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* the BSP_SD_Init() call in the SD_Initialize() and add a call to
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* BSP_SD_Init() elsewhere in the application.
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*/
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/* USER CODE BEGIN disableSDInit */
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/* #define DISABLE_SD_INIT */
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/* USER CODE END disableSDInit */
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/* Private variables ---------------------------------------------------------*/
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/* Disk status */
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static volatile DSTATUS Stat = STA_NOINIT;
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/* Private function prototypes -----------------------------------------------*/
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static DSTATUS SD_CheckStatus(BYTE lun);
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/* USER CODE BEGIN beforeFunctionSection */
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/* can be used to modify / undefine following code or add new code */
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/* USER CODE END beforeFunctionSection */
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/* Private functions ---------------------------------------------------------*/
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static DSTATUS SD_CheckStatus(BYTE lun)
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{
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Stat = STA_NOINIT;
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if(BSP_SD_GetCardState() == MSD_OK)
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{
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Stat &= ~STA_NOINIT;
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}
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return Stat;
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}
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/**
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* @brief Initializes a Drive
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* @param lun : not used
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* @retval DSTATUS: Operation status
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*/
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DSTATUS SD_initialize(BYTE lun)
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{
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Stat = STA_NOINIT;
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#if !defined(DISABLE_SD_INIT)
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if(BSP_SD_Init() == MSD_OK)
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{
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Stat = SD_CheckStatus(lun);
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}
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#else
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Stat = SD_CheckStatus(lun);
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#endif
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return Stat;
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}
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/**
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* @brief Gets Disk Status
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* @param lun : not used
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* @retval DSTATUS: Operation status
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*/
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DSTATUS SD_status(BYTE lun)
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{
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return SD_CheckStatus(lun);
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}
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/* USER CODE BEGIN beforeReadSection */
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/* can be used to modify previous code / undefine following code / add new code */
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/* USER CODE END beforeReadSection */
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/**
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* @brief Reads Sector(s)
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* @param lun : not used
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* @param *buff: Data buffer to store read data
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* @param sector: Sector address (LBA)
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* @param count: Number of sectors to read (1..128)
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* @retval DRESULT: Operation result
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*/
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DRESULT SD_read(BYTE lun, BYTE *buff, DWORD sector, UINT count)
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{
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DRESULT res = RES_ERROR;
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if(BSP_SD_ReadBlocks((uint32_t*)buff,
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(uint32_t) (sector),
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count, SD_TIMEOUT) == MSD_OK)
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{
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/* wait until the read operation is finished */
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while(BSP_SD_GetCardState()!= MSD_OK)
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{
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}
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res = RES_OK;
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}
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return res;
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}
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/* USER CODE BEGIN beforeWriteSection */
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/* can be used to modify previous code / undefine following code / add new code */
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/* USER CODE END beforeWriteSection */
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/**
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* @brief Writes Sector(s)
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* @param lun : not used
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* @param *buff: Data to be written
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* @param sector: Sector address (LBA)
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* @param count: Number of sectors to write (1..128)
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* @retval DRESULT: Operation result
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*/
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DRESULT SD_write(BYTE lun, const BYTE *buff, DWORD sector, UINT count)
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{
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DRESULT res = RES_ERROR;
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if(BSP_SD_WriteBlocks((uint32_t*)buff,
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(uint32_t)(sector),
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count, SD_TIMEOUT) == MSD_OK)
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{
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/* wait until the Write operation is finished */
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while(BSP_SD_GetCardState() != MSD_OK)
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{
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}
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res = RES_OK;
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}
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return res;
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}
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/* USER CODE BEGIN beforeIoctlSection */
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/* can be used to modify previous code / undefine following code / add new code */
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/* USER CODE END beforeIoctlSection */
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/**
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* @brief I/O control operation
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* @param lun : not used
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* @param cmd: Control code
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* @param *buff: Buffer to send/receive control data
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* @retval DRESULT: Operation result
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*/
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DRESULT SD_ioctl(BYTE lun, BYTE cmd, void *buff)
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{
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DRESULT res = RES_ERROR;
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BSP_SD_CardInfo CardInfo;
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if (Stat & STA_NOINIT) return RES_NOTRDY;
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switch (cmd)
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{
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/* Make sure that no pending write process */
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case CTRL_SYNC :
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res = RES_OK;
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break;
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/* Get number of sectors on the disk (DWORD) */
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case GET_SECTOR_COUNT :
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BSP_SD_GetCardInfo(&CardInfo);
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*(DWORD*)buff = CardInfo.LogBlockNbr;
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res = RES_OK;
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break;
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/* Get R/W sector size (WORD) */
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case GET_SECTOR_SIZE :
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BSP_SD_GetCardInfo(&CardInfo);
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*(WORD*)buff = CardInfo.LogBlockSize;
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res = RES_OK;
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break;
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/* Get erase block size in unit of sector (DWORD) */
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case GET_BLOCK_SIZE :
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BSP_SD_GetCardInfo(&CardInfo);
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*(DWORD*)buff = CardInfo.LogBlockSize / SD_DEFAULT_BLOCK_SIZE;
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res = RES_OK;
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break;
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default:
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res = RES_PARERR;
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}
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return res;
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}
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/* USER CODE BEGIN afterIoctlSection */
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/* can be used to modify previous code / undefine following code / add new code */
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/* USER CODE END afterIoctlSection */
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/* USER CODE BEGIN lastSection */
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/* can be used to modify / undefine previous code or add new code */
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/* USER CODE END lastSection */
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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