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252 lines
8.5 KiB
252 lines
8.5 KiB
/**
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******************************************************************************
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* @file : usbd_storage_if.c
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* @author : MCD Application Team
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* @version : V1.1.0
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* @date : 19-March-2012
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* @brief : Memory management layer
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******************************************************************************
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* COPYRIGHT(c) 2015 STMicroelectronics
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions 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 its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, 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 "usbd_storage_if.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* USB handler declaration */
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/* Handle for USB Full Speed IP */
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USBD_HandleTypeDef *hUsbDevice_0;
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extern USBD_HandleTypeDef hUsbDeviceFS;
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/* Private function prototypes -----------------------------------------------*/
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/* Extern function prototypes ------------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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#define STORAGE_LUN_NBR 1
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#define STORAGE_BLK_NBR 0x10000
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#define STORAGE_BLK_SIZ 0x200
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static int8_t STORAGE_Init_FS (uint8_t lun);
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static int8_t STORAGE_GetCapacity_FS (uint8_t lun,
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uint32_t *block_num,
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uint16_t *block_size);
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static int8_t STORAGE_IsReady_FS (uint8_t lun);
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static int8_t STORAGE_IsWriteProtected_FS (uint8_t lun);
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static int8_t STORAGE_Read_FS (uint8_t lun,
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uint8_t *buf,
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uint32_t blk_addr,
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uint16_t blk_len);
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static int8_t STORAGE_Write_FS (uint8_t lun,
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uint8_t *buf,
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uint32_t blk_addr,
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uint16_t blk_len);
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static int8_t STORAGE_GetMaxLun_FS (void);
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/* USER CODE BEGIN 0 */
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/* USB Mass storage Standard Inquiry Data */
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const int8_t STORAGE_Inquirydata_FS[] = {//36
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/* LUN 0 */
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0x00,
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0x80,
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0x02,
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0x02,
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(STANDARD_INQUIRY_DATA_LEN - 5),
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0x00,
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0x00,
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0x00,
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'S', 'T', 'M', ' ', ' ', ' ', ' ', ' ', /* Manufacturer : 8 bytes */
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'P', 'r', 'o', 'd', 'u', 'c', 't', ' ', /* Product : 16 Bytes */
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' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
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'0', '.', '0' ,'1', /* Version : 4 Bytes */
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};
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/* USER CODE END 0 */
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USBD_StorageTypeDef USBD_Storage_Interface_fops_FS =
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{
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STORAGE_Init_FS,
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STORAGE_GetCapacity_FS,
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STORAGE_IsReady_FS,
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STORAGE_IsWriteProtected_FS,
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STORAGE_Read_FS,
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STORAGE_Write_FS,
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STORAGE_GetMaxLun_FS,
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(int8_t *)STORAGE_Inquirydata_FS,
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};
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/*******************************************************************************
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* Function Name : STORAGE_Init_FS
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* Description :
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* Input : None.
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* Output : None.
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* Return : None.
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*******************************************************************************/
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int8_t
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STORAGE_Init_FS (uint8_t lun)
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{
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/* USER CODE BEGIN 2 */
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if (lun >= STORAGE_LUN_NBR)
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{
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return (USBD_FAIL);
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}
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return (USBD_OK);
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/* USER CODE END 2 */
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}
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/*******************************************************************************
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* Function Name : STORAGE_GetCapacity_FS
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* Description :
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* Input : None.
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* Output : None.
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* Return : None.
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*******************************************************************************/
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int8_t STORAGE_GetCapacity_FS (uint8_t lun, uint32_t *block_num, uint16_t *block_size)
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{
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/* USER CODE BEGIN 3 */
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if (lun >= STORAGE_LUN_NBR)
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{
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return (USBD_FAIL);
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}
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*block_num = STORAGE_BLK_NBR;
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*block_size = STORAGE_BLK_SIZ;
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return (USBD_OK);
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/* USER CODE END 3 */
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}
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/*******************************************************************************
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* Function Name : STORAGE_IsReady_FS
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* Description :
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* Input : None.
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* Output : None.
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* Return : None.
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*******************************************************************************/
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int8_t STORAGE_IsReady_FS (uint8_t lun)
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{
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/* USER CODE BEGIN 4 */
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if (lun >= STORAGE_LUN_NBR)
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{
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return (USBD_FAIL);
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}
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return (USBD_OK);
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/* USER CODE END 4 */
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}
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/*******************************************************************************
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* Function Name : STORAGE_IsWriteProtected_FS
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* Description :
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* Input : None.
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* Output : None.
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* Return : None.
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*******************************************************************************/
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int8_t STORAGE_IsWriteProtected_FS (uint8_t lun)
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{
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/* USER CODE BEGIN 5 */
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if (lun >= STORAGE_LUN_NBR)
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{
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return (USBD_FAIL);
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}
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return (USBD_OK);
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/* USER CODE END 5 */
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}
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/*******************************************************************************
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* Function Name : STORAGE_Read_FS
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* Description :
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* Input : None.
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* Output : None.
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* Return : None.
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*******************************************************************************/
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int8_t STORAGE_Read_FS (uint8_t lun,
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uint8_t *buf,
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uint32_t blk_addr,
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uint16_t blk_len)
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{
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/* USER CODE BEGIN 6 */
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uint16_t blockLoop;
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uint16_t byteLoop;
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if (lun >= STORAGE_LUN_NBR)
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{
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return -1;
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}
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for (blockLoop = 0; blockLoop < blk_len; blockLoop++) //blk_len will be 1 when scsi_blk_size = 512 bytes
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{
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for (byteLoop = 0; byteLoop < STORAGE_BLK_SIZ; byteLoop += 4) //STORAGE_BLK_SIZ must be a multiple of 4
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{
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*((__packed uint32_t *)buf) = 0;
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buf += 4;
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}
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}
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return (USBD_OK);
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/* USER CODE END 6 */
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}
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/*******************************************************************************
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* Function Name : STORAGE_Write_FS
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* Description :
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* Input : None.
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* Output : None.
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* Return : None.
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*******************************************************************************/
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int8_t STORAGE_Write_FS (uint8_t lun,
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uint8_t *buf,
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uint32_t blk_addr,
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uint16_t blk_len)
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{
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/* USER CODE BEGIN 7 */
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if (lun >= STORAGE_LUN_NBR)
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{
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return -1;
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}
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return (USBD_OK);
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/* USER CODE END 7 */
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}
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/*******************************************************************************
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* Function Name : STORAGE_GetMaxLun_FS
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* Description :
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* Input : None.
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* Output : None.
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* Return : None.
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*******************************************************************************/
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int8_t STORAGE_GetMaxLun_FS (void)
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{
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/* USER CODE BEGIN 8 */
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return (STORAGE_LUN_NBR - 1);
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/* USER CODE END 8 */
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}
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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