372 lines
11 KiB
C
372 lines
11 KiB
C
/**
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******************************************************************************
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* @file sd_diskio_dma_template.c
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* @author MCD Application Team
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* @version V2.0.2
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* @date 10-November-2017
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* @brief SD DMA Disk I/O template driver. This file needs to be renamed and
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copied into the application project alongside the respective header
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file.
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2017 STMicroelectronics International N.V.
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* All rights reserved.</center></h2>
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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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/* Includes ------------------------------------------------------------------*/
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#include "ff_gen_drv.h"
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#include "sd_diskio_dma.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/*
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* the following Timeout is useful to give the control back to the applications
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* in case of errors in either BSP_SD_ReadCpltCallback() or BSP_SD_WriteCpltCallback()
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* the value by default is as defined in the BSP platform driver otherwise 30 secs
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*/
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#define SD_TIMEOUT 3 * 1000 //30 * 1000
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#define SD_DEFAULT_BLOCK_SIZE 512
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/*
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* Depending on the usecase, 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().
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*/
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/* #define DISABLE_SD_INIT */
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/*
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* when using cachable memory region, it may be needed to maintain the cache
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* validity. Enable the define below to activate a cache maintenance at each
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* read and write operation.
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* Notice: This is applicable only for cortex M7 based platform.
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*/
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/* AXI SRAM<41><4D><EFBFBD><EFBFBD>ΪWTģʽ<C4A3><CABD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶ<EFBFBD><D6B6><EFBFBD><EFBFBD><EFBFBD>Cacheʵ<65><CAB5>Clean */
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#define ENABLE_SD_DMA_CACHE_MAINTENANCE_WRITE 0
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/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>ֶ<EFBFBD><D6B6><EFBFBD><EFBFBD><EFBFBD>Cacheʵ<65><CAB5><EFBFBD><EFBFBD>Ч<EFBFBD><D0A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
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#define ENABLE_SD_DMA_CACHE_MAINTENANCE_READ 1
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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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static volatile UINT WriteStatus = 0, ReadStatus = 0;
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/* Private function prototypes -----------------------------------------------*/
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static DSTATUS SD_CheckStatus(BYTE lun);
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DSTATUS SD_initialize (BYTE);
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DSTATUS SD_status (BYTE);
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DRESULT SD_read (BYTE, BYTE*, DWORD, UINT);
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#if _USE_WRITE == 1
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DRESULT SD_write (BYTE, const BYTE*, DWORD, UINT);
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#endif /* _USE_WRITE == 1 */
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#if _USE_IOCTL == 1
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DRESULT SD_ioctl (BYTE, BYTE, void*);
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#endif /* _USE_IOCTL == 1 */
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const Diskio_drvTypeDef SD_Driver =
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{
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SD_initialize,
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SD_status,
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SD_read,
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#if _USE_WRITE == 1
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SD_write,
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#endif /* _USE_WRITE == 1 */
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#if _USE_IOCTL == 1
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SD_ioctl,
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#endif /* _USE_IOCTL == 1 */
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};
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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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#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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/**
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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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ReadStatus = 0;
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uint32_t timeout;
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#if (ENABLE_SD_DMA_CACHE_MAINTENANCE_READ == 1)
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uint32_t alignedAddr;
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#endif
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if(BSP_SD_ReadBlocks_DMA((uint32_t*)buff,
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(uint32_t) (sector),
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count) == MSD_OK)
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{
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/* Wait that the reading process is completed or a timeout occurs */
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timeout = HAL_GetTick();
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while((ReadStatus == 0) && ((HAL_GetTick() - timeout) < SD_TIMEOUT))
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{
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}
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/* incase of a timeout return error */
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if (ReadStatus == 0)
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{
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res = RES_ERROR;
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}
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else
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{
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ReadStatus = 0;
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timeout = HAL_GetTick();
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while((HAL_GetTick() - timeout) < SD_TIMEOUT)
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{
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if (BSP_SD_GetCardState() == SD_TRANSFER_OK)
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{
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res = RES_OK;
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#if (ENABLE_SD_DMA_CACHE_MAINTENANCE_READ == 1)
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/*
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the SCB_InvalidateDCache_by_Addr() requires a 32-Byte aligned address,
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adjust the address and the D-Cache size to invalidate accordingly.
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*/
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alignedAddr = (uint32_t)buff & ~0x1F;
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SCB_InvalidateDCache_by_Addr((uint32_t*)alignedAddr, count*BLOCKSIZE + ((uint32_t)buff - alignedAddr));
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#endif
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break;
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}
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}
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}
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}
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return res;
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}
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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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#if _USE_WRITE == 1
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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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WriteStatus = 0;
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uint32_t timeout;
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#if (ENABLE_SD_DMA_CACHE_MAINTENANCE_WRITE == 1)
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uint32_t alignedAddr;
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/*
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the SCB_CleanDCache_by_Addr() requires a 32-Byte aligned address
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adjust the address and the D-Cache size to clean accordingly.
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*/
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alignedAddr = (uint32_t)buff & ~0x1F;
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SCB_CleanDCache_by_Addr((uint32_t*)alignedAddr, count*BLOCKSIZE + ((uint32_t)buff - alignedAddr));
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#endif
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if(BSP_SD_WriteBlocks_DMA((uint32_t*)buff,
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(uint32_t)(sector),
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count) == MSD_OK)
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{
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/* Wait that writing process is completed or a timeout occurs */
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timeout = HAL_GetTick();
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while((WriteStatus == 0) && ((HAL_GetTick() - timeout) < SD_TIMEOUT))
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{
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}
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/* incase of a timeout return error */
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if (WriteStatus == 0)
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{
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res = RES_ERROR;
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}
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else
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{
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WriteStatus = 0;
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timeout = HAL_GetTick();
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while((HAL_GetTick() - timeout) < SD_TIMEOUT)
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{
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if (BSP_SD_GetCardState() == SD_TRANSFER_OK)
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{
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res = RES_OK;
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break;
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}
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}
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}
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}
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return res;
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}
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#endif /* _USE_WRITE == 1 */
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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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#if _USE_IOCTL == 1
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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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#endif /* _USE_IOCTL == 1 */
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/**
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* @brief Tx Transfer completed callbacks
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* @param hsd: SD handle
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* @retval None
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*/
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/*
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===============================================================================
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Select the correct function signature depending on your platform.
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please refer to the file "stm32xxxx_eval_sd.h" to verify the correct function
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prototype
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===============================================================================
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*/
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//void BSP_SD_WriteCpltCallback(uint32_t SdCard)
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void BSP_SD_WriteCpltCallback(void)
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{
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WriteStatus = 1;
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}
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/**
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* @brief Rx Transfer completed callbacks
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* @param hsd: SD handle
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* @retval None
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*/
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/*
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===============================================================================
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Select the correct function signature depending on your platform.
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please refer to the file "stm32xxxx_eval_sd.h" to verify the correct function
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prototype
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===============================================================================
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*/
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//void BSP_SD_ReadCpltCallback(uint32_t SdCard)
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void BSP_SD_ReadCpltCallback(void)
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{
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ReadStatus = 1;
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}
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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