687 lines
19 KiB
C
687 lines
19 KiB
C
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file sd_diskio.c
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* @brief SD Disk I/O driver
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2021 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under Ultimate Liberty license
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* SLA0044, the "License"; You may not use this file except in compliance with
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* the License. You may obtain a copy of the License at:
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* www.st.com/SLA0044
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Note: code generation based on sd_diskio_dma_rtos_template_bspv1.c v2.1.4
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as FreeRTOS is enabled. */
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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 "ff_gen_drv.h"
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#include "sd_diskio.h"
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#include <string.h>
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#include <stdio.h>
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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#define QUEUE_SIZE (uint32_t) 10
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#define READ_CPLT_MSG (uint32_t) 1
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#define WRITE_CPLT_MSG (uint32_t) 2
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/*
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==================================================================
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enable the defines below to send custom rtos messages
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when an error or an abort occurs.
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Notice: depending on the HAL/SD driver the HAL_SD_ErrorCallback()
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may not be available.
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See BSP_SD_ErrorCallback() and BSP_SD_AbortCallback() below
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==================================================================
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#define RW_ERROR_MSG (uint32_t) 3
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#define RW_ABORT_MSG (uint32_t) 4
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*/
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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 30 * 1000
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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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/*
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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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/* USER CODE BEGIN enableSDDmaCacheMaintenance */
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/* #define ENABLE_SD_DMA_CACHE_MAINTENANCE 1 */
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/* USER CODE END enableSDDmaCacheMaintenance */
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/*
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* Some DMA requires 4-Byte aligned address buffer to correctly read/wite data,
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* in FatFs some accesses aren't thus we need a 4-byte aligned scratch buffer to correctly
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* transfer data
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*/
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/* USER CODE BEGIN enableScratchBuffer */
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/* #define ENABLE_SCRATCH_BUFFER */
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/* USER CODE END enableScratchBuffer */
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/* Private variables ---------------------------------------------------------*/
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#if defined(ENABLE_SCRATCH_BUFFER)
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#if defined (ENABLE_SD_DMA_CACHE_MAINTENANCE)
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ALIGN_32BYTES(static uint8_t scratch[BLOCKSIZE]); // 32-Byte aligned for cache maintenance
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#else
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__ALIGN_BEGIN static uint8_t scratch[BLOCKSIZE] __ALIGN_END;
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#endif
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#endif
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/* Disk status */
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static volatile DSTATUS Stat = STA_NOINIT;
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#if (osCMSIS <= 0x20000U)
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static osMessageQId SDQueueID = NULL;
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#else
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static osMessageQueueId_t SDQueueID = NULL;
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#endif
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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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/* 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 int SD_CheckStatusWithTimeout(uint32_t timeout)
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{
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uint32_t timer;
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/* block until SDIO peripherial is ready again or a timeout occur */
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#if (osCMSIS <= 0x20000U)
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timer = osKernelSysTick();
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while( osKernelSysTick() - timer < timeout)
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#else
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timer = osKernelGetTickCount();
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while( osKernelGetTickCount() - timer < timeout)
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#endif
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{
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if (BSP_SD_GetCardState() == SD_TRANSFER_OK)
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{
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return 0;
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}
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}
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return -1;
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}
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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() == SD_TRANSFER_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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/*
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* check that the kernel has been started before continuing
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* as the osMessage API will fail otherwise
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*/
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#if (osCMSIS <= 0x20000U)
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if(osKernelRunning())
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#else
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if(osKernelGetState() == osKernelRunning)
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#endif
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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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/*
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* if the SD is correctly initialized, create the operation queue
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* if not already created
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*/
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if (Stat != STA_NOINIT)
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{
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if (SDQueueID == NULL)
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{
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#if (osCMSIS <= 0x20000U)
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osMessageQDef(SD_Queue, QUEUE_SIZE, uint16_t);
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SDQueueID = osMessageCreate (osMessageQ(SD_Queue), NULL);
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#else
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SDQueueID = osMessageQueueNew(QUEUE_SIZE, 2, NULL);
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#endif
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}
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if (SDQueueID == NULL)
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{
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Stat |= STA_NOINIT;
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}
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}
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}
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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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uint32_t timer;
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#if (osCMSIS < 0x20000U)
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osEvent event;
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#else
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uint16_t event;
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osStatus_t status;
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#endif
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#if (ENABLE_SD_DMA_CACHE_MAINTENANCE == 1)
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uint32_t alignedAddr;
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#endif
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/*
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* ensure the SDCard is ready for a new operation
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*/
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if (SD_CheckStatusWithTimeout(SD_TIMEOUT) < 0)
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{
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return res;
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}
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#if defined(ENABLE_SCRATCH_BUFFER)
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if (!((uint32_t)buff & 0x3))
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{
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#endif
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/* Fast path cause destination buffer is correctly aligned */
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uint8_t ret = BSP_SD_ReadBlocks_DMA((uint32_t*)buff, (uint32_t)(sector), count);
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if (ret == MSD_OK) {
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#if (osCMSIS < 0x20000U)
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/* wait for a message from the queue or a timeout */
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event = osMessageGet(SDQueueID, SD_TIMEOUT);
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if (event.status == osEventMessage)
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{
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if (event.value.v == READ_CPLT_MSG)
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{
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timer = osKernelSysTick();
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/* block until SDIO IP is ready or a timeout occur */
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while(osKernelSysTick() - timer <SD_TIMEOUT)
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#else
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status = osMessageQueueGet(SDQueueID, (void *)&event, NULL, SD_TIMEOUT);
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if ((status == osOK) && (event == READ_CPLT_MSG))
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{
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timer = osKernelGetTickCount();
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/* block until SDIO IP is ready or a timeout occur */
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while(osKernelGetTickCount() - timer <SD_TIMEOUT)
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#endif
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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 == 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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#if (osCMSIS < 0x20000U)
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}
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}
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#else
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}
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#endif
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}
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#if defined(ENABLE_SCRATCH_BUFFER)
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}
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else
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{
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/* Slow path, fetch each sector a part and memcpy to destination buffer */
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int i;
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for (i = 0; i < count; i++)
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{
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ret = BSP_SD_ReadBlocks_DMA((uint32_t*)scratch, (uint32_t)sector++, 1);
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if (ret == MSD_OK )
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{
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/* wait until the read is successful or a timeout occurs */
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#if (osCMSIS < 0x20000U)
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/* wait for a message from the queue or a timeout */
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event = osMessageGet(SDQueueID, SD_TIMEOUT);
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if (event.status == osEventMessage)
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{
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if (event.value.v == READ_CPLT_MSG)
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{
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timer = osKernelSysTick();
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/* block until SDIO IP is ready or a timeout occur */
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while(osKernelSysTick() - timer <SD_TIMEOUT)
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#else
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status = osMessageQueueGet(SDQueueID, (void *)&event, NULL, SD_TIMEOUT);
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if ((status == osOK) && (event == READ_CPLT_MSG))
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{
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timer = osKernelGetTickCount();
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/* block until SDIO IP is ready or a timeout occur */
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ret = MSD_ERROR;
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while(osKernelGetTickCount() - timer < SD_TIMEOUT)
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#endif
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{
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ret = BSP_SD_GetCardState();
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if (ret == MSD_OK)
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{
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break;
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}
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}
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if (ret != MSD_OK)
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{
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break;
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}
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#if (osCMSIS < 0x20000U)
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}
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}
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#else
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}
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#endif
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#if (ENABLE_SD_DMA_CACHE_MAINTENANCE == 1)
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/*
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*
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* invalidate the scratch buffer before the next read to get the actual data instead of the cached one
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*/
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SCB_InvalidateDCache_by_Addr((uint32_t*)scratch, BLOCKSIZE);
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#endif
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memcpy(buff, scratch, BLOCKSIZE);
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buff += BLOCKSIZE;
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}
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else
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{
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break;
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}
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}
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if ((i == count) && (ret == MSD_OK ))
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res = RES_OK;
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}
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#endif
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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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#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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uint32_t timer;
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#if (osCMSIS < 0x20000U)
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osEvent event;
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#else
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uint16_t event;
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osStatus_t status;
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#endif
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#if defined(ENABLE_SCRATCH_BUFFER)
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int32_t ret;
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#endif
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/*
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* ensure the SDCard is ready for a new operation
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*/
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if (SD_CheckStatusWithTimeout(SD_TIMEOUT) < 0)
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{
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return res;
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}
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#if defined(ENABLE_SCRATCH_BUFFER)
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if (!((uint32_t)buff & 0x3))
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{
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#endif
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#if (ENABLE_SD_DMA_CACHE_MAINTENANCE == 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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#if (osCMSIS < 0x20000U)
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/* Get the message from the queue */
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event = osMessageGet(SDQueueID, SD_TIMEOUT);
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if (event.status == osEventMessage)
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{
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if (event.value.v == WRITE_CPLT_MSG)
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{
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#else
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status = osMessageQueueGet(SDQueueID, (void *)&event, NULL, SD_TIMEOUT);
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if ((status == osOK) && (event == WRITE_CPLT_MSG))
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{
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#endif
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#if (osCMSIS < 0x20000U)
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timer = osKernelSysTick();
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/* block until SDIO IP is ready or a timeout occur */
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while(osKernelSysTick() - timer < SD_TIMEOUT)
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#else
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timer = osKernelGetTickCount();
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/* block until SDIO IP is ready or a timeout occur */
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while(osKernelGetTickCount() - timer < SD_TIMEOUT)
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#endif
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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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#if (osCMSIS < 0x20000U)
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}
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}
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#else
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}
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#endif
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}
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#if defined(ENABLE_SCRATCH_BUFFER)
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else {
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/* Slow path, fetch each sector a part and memcpy to destination buffer */
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int i;
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#if (ENABLE_SD_DMA_CACHE_MAINTENANCE == 1)
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/*
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* invalidate the scratch buffer before the next write to get the actual data instead of the cached one
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*/
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SCB_InvalidateDCache_by_Addr((uint32_t*)scratch, BLOCKSIZE);
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#endif
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for (i = 0; i < count; i++)
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{
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memcpy((void *)scratch, buff, BLOCKSIZE);
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buff += BLOCKSIZE;
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ret = BSP_SD_WriteBlocks_DMA((uint32_t*)scratch, (uint32_t)sector++, 1);
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if (ret == MSD_OK )
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{
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/* wait until the read is successful or a timeout occurs */
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#if (osCMSIS < 0x20000U)
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/* wait for a message from the queue or a timeout */
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event = osMessageGet(SDQueueID, SD_TIMEOUT);
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if (event.status == osEventMessage)
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{
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if (event.value.v == READ_CPLT_MSG)
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{
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timer = osKernelSysTick();
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/* block until SDIO IP is ready or a timeout occur */
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while(osKernelSysTick() - timer <SD_TIMEOUT)
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#else
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status = osMessageQueueGet(SDQueueID, (void *)&event, NULL, SD_TIMEOUT);
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if ((status == osOK) && (event == READ_CPLT_MSG))
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{
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timer = osKernelGetTickCount();
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/* block until SDIO IP is ready or a timeout occur */
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ret = MSD_ERROR;
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while(osKernelGetTickCount() - timer < SD_TIMEOUT)
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#endif
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{
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ret = BSP_SD_GetCardState();
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if (ret == MSD_OK)
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{
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break;
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}
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}
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if (ret != MSD_OK)
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{
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break;
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}
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#if (osCMSIS < 0x20000U)
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}
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}
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#else
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}
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#endif
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}
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else
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{
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|
break;
|
|
}
|
|
}
|
|
|
|
if ((i == count) && (ret == MSD_OK ))
|
|
res = RES_OK;
|
|
}
|
|
|
|
}
|
|
#endif
|
|
|
|
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 callbackSection */
|
|
/* can be used to modify / following code or add new code */
|
|
/* USER CODE END callbackSection */
|
|
/**
|
|
* @brief Tx Transfer completed callbacks
|
|
* @param hsd: SD handle
|
|
* @retval None
|
|
*/
|
|
void BSP_SD_WriteCpltCallback(void)
|
|
{
|
|
|
|
/*
|
|
* No need to add an "osKernelRunning()" check here, as the SD_initialize()
|
|
* is always called before any SD_Read()/SD_Write() call
|
|
*/
|
|
#if (osCMSIS < 0x20000U)
|
|
osMessagePut(SDQueueID, WRITE_CPLT_MSG, 0);
|
|
#else
|
|
const uint16_t msg = WRITE_CPLT_MSG;
|
|
osMessageQueuePut(SDQueueID, (const void *)&msg, NULL, 0);
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* @brief Rx Transfer completed callbacks
|
|
* @param hsd: SD handle
|
|
* @retval None
|
|
*/
|
|
void BSP_SD_ReadCpltCallback(void)
|
|
{
|
|
/*
|
|
* No need to add an "osKernelRunning()" check here, as the SD_initialize()
|
|
* is always called before any SD_Read()/SD_Write() call
|
|
*/
|
|
#if (osCMSIS < 0x20000U)
|
|
osMessagePut(SDQueueID, READ_CPLT_MSG, 0);
|
|
#else
|
|
const uint16_t msg = READ_CPLT_MSG;
|
|
osMessageQueuePut(SDQueueID, (const void *)&msg, NULL, 0);
|
|
#endif
|
|
}
|
|
|
|
/* USER CODE BEGIN ErrorAbortCallbacks */
|
|
/*
|
|
void BSP_SD_AbortCallback(void)
|
|
{
|
|
#if (osCMSIS < 0x20000U)
|
|
osMessagePut(SDQueueID, RW_ABORT_MSG, 0);
|
|
#else
|
|
const uint16_t msg = RW_ABORT_MSG;
|
|
osMessageQueuePut(SDQueueID, (const void *)&msg, NULL, 0);
|
|
#endif
|
|
}
|
|
*/
|
|
/* USER CODE END ErrorAbortCallbacks */
|
|
|
|
/* 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****/
|
|
|