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267 lines
6.4 KiB
267 lines
6.4 KiB
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file usbh_diskio.c (based on usbh_diskio_template.c v2.0.2)
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* @brief USB Host Disk I/O driver
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2024 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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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 "usbh_diskio.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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#define USB_DEFAULT_BLOCK_SIZE 512
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/* Private variables ---------------------------------------------------------*/
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extern USBH_HandleTypeDef hUSB_Host;
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/* Private function prototypes -----------------------------------------------*/
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DSTATUS USBH_initialize (BYTE);
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DSTATUS USBH_status (BYTE);
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DRESULT USBH_read (BYTE, BYTE*, DWORD, UINT);
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#if _USE_WRITE == 1
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DRESULT USBH_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 USBH_ioctl (BYTE, BYTE, void*);
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#endif /* _USE_IOCTL == 1 */
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const Diskio_drvTypeDef USBH_Driver =
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{
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USBH_initialize,
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USBH_status,
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USBH_read,
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#if _USE_WRITE == 1
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USBH_write,
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#endif /* _USE_WRITE == 1 */
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#if _USE_IOCTL == 1
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USBH_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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/**
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* @brief Initializes a Drive
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* @param lun : lun id
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* @retval DSTATUS: Operation status
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*/
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DSTATUS USBH_initialize(BYTE lun)
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{
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/* CAUTION : USB Host library has to be initialized in the application */
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return RES_OK;
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}
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/**
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* @brief Gets Disk Status
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* @param lun : lun id
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* @retval DSTATUS: Operation status
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*/
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DSTATUS USBH_status(BYTE lun)
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{
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DRESULT res = RES_ERROR;
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if(USBH_MSC_UnitIsReady(&hUSB_Host, lun))
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{
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res = RES_OK;
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}
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else
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{
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res = RES_ERROR;
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}
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return res;
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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 : lun id
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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 USBH_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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MSC_LUNTypeDef info;
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if(USBH_MSC_Read(&hUSB_Host, lun, sector, buff, count) == USBH_OK)
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{
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res = RES_OK;
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}
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else
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{
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USBH_MSC_GetLUNInfo(&hUSB_Host, lun, &info);
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switch (info.sense.asc)
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{
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case SCSI_ASC_LOGICAL_UNIT_NOT_READY:
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case SCSI_ASC_MEDIUM_NOT_PRESENT:
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case SCSI_ASC_NOT_READY_TO_READY_CHANGE:
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USBH_ErrLog ("USB Disk is not ready!");
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res = RES_NOTRDY;
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break;
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default:
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res = RES_ERROR;
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break;
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}
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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 : lun id
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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 USBH_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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MSC_LUNTypeDef info;
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if(USBH_MSC_Write(&hUSB_Host, lun, sector, (BYTE *)buff, count) == USBH_OK)
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{
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res = RES_OK;
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}
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else
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{
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USBH_MSC_GetLUNInfo(&hUSB_Host, lun, &info);
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switch (info.sense.asc)
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{
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case SCSI_ASC_WRITE_PROTECTED:
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USBH_ErrLog("USB Disk is Write protected!");
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res = RES_WRPRT;
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break;
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case SCSI_ASC_LOGICAL_UNIT_NOT_READY:
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case SCSI_ASC_MEDIUM_NOT_PRESENT:
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case SCSI_ASC_NOT_READY_TO_READY_CHANGE:
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USBH_ErrLog("USB Disk is not ready!");
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res = RES_NOTRDY;
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break;
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default:
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res = RES_ERROR;
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break;
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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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/* 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 : lun id
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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 USBH_ioctl(BYTE lun, BYTE cmd, void *buff)
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{
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DRESULT res = RES_ERROR;
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MSC_LUNTypeDef info;
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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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if(USBH_MSC_GetLUNInfo(&hUSB_Host, lun, &info) == USBH_OK)
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{
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*(DWORD*)buff = info.capacity.block_nbr;
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res = RES_OK;
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}
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else
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{
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res = RES_ERROR;
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}
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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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if(USBH_MSC_GetLUNInfo(&hUSB_Host, lun, &info) == USBH_OK)
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{
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*(DWORD*)buff = info.capacity.block_size;
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res = RES_OK;
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}
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else
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{
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res = RES_ERROR;
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}
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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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if(USBH_MSC_GetLUNInfo(&hUSB_Host, lun, &info) == USBH_OK)
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{
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*(DWORD*)buff = info.capacity.block_size / USB_DEFAULT_BLOCK_SIZE;
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res = RES_OK;
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}
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else
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{
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res = RES_ERROR;
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}
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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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/* 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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