diff options
Diffstat (limited to 'STM32_bootloader/Middlewares/Third_Party/FatFs/src/ff_gen_drv.c')
| -rw-r--r-- | STM32_bootloader/Middlewares/Third_Party/FatFs/src/ff_gen_drv.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/STM32_bootloader/Middlewares/Third_Party/FatFs/src/ff_gen_drv.c b/STM32_bootloader/Middlewares/Third_Party/FatFs/src/ff_gen_drv.c new file mode 100644 index 0000000..3e2133c --- /dev/null +++ b/STM32_bootloader/Middlewares/Third_Party/FatFs/src/ff_gen_drv.c @@ -0,0 +1,151 @@ +/** + ****************************************************************************** + * @file ff_gen_drv.c + * @author MCD Application Team + * @version V1.4.1 + * @date 14-February-2017 + * @brief FatFs generic low level driver. + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT 2017 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted, provided that the following conditions are met: + * + * 1. Redistribution of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of other + * contributors to this software may be used to endorse or promote products + * derived from this software without specific written permission. + * 4. This software, including modifications and/or derivative works of this + * software, must execute solely and exclusively on microcontroller or + * microprocessor devices manufactured by or for STMicroelectronics. + * 5. Redistribution and use of this software other than as permitted under + * this license is void and will automatically terminate your rights under + * this license. + * + * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A + * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY + * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT + * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, + * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "ff_gen_drv.h" + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +Disk_drvTypeDef disk = {{0},{0},{0},0}; + +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/** + * @brief Links a compatible diskio driver/lun id and increments the number of active + * linked drivers. + * @note The number of linked drivers (volumes) is up to 10 due to FatFs limits. + * @param drv: pointer to the disk IO Driver structure + * @param path: pointer to the logical drive path + * @param lun : only used for USB Key Disk to add multi-lun management + else the paramter must be equal to 0 + * @retval Returns 0 in case of success, otherwise 1. + */ +uint8_t FATFS_LinkDriverEx(Diskio_drvTypeDef *drv, char *path, uint8_t lun) +{ + uint8_t ret = 1; + uint8_t DiskNum = 0; + + if(disk.nbr <= _VOLUMES) + { + disk.is_initialized[disk.nbr] = 0; + disk.drv[disk.nbr] = drv; + disk.lun[disk.nbr] = lun; + DiskNum = disk.nbr++; + path[0] = DiskNum + '0'; + path[1] = ':'; + path[2] = '/'; + path[3] = 0; + ret = 0; + } + + return ret; +} + +/** + * @brief Links a compatible diskio driver and increments the number of active + * linked drivers. + * @note The number of linked drivers (volumes) is up to 10 due to FatFs limits + * @param drv: pointer to the disk IO Driver structure + * @param path: pointer to the logical drive path + * @retval Returns 0 in case of success, otherwise 1. + */ +uint8_t FATFS_LinkDriver(Diskio_drvTypeDef *drv, char *path) +{ + return FATFS_LinkDriverEx(drv, path, 0); +} + +/** + * @brief Unlinks a diskio driver and decrements the number of active linked + * drivers. + * @param path: pointer to the logical drive path + * @param lun : not used + * @retval Returns 0 in case of success, otherwise 1. + */ +uint8_t FATFS_UnLinkDriverEx(char *path, uint8_t lun) +{ + uint8_t DiskNum = 0; + uint8_t ret = 1; + + if(disk.nbr >= 1) + { + DiskNum = path[0] - '0'; + if(disk.drv[DiskNum] != 0) + { + disk.drv[DiskNum] = 0; + disk.lun[DiskNum] = 0; + disk.nbr--; + ret = 0; + } + } + + return ret; +} + +/** + * @brief Unlinks a diskio driver and decrements the number of active linked + * drivers. + * @param path: pointer to the logical drive path + * @retval Returns 0 in case of success, otherwise 1. + */ +uint8_t FATFS_UnLinkDriver(char *path) +{ + return FATFS_UnLinkDriverEx(path, 0); +} + +/** + * @brief Gets number of linked drivers to the FatFs module. + * @param None + * @retval Number of attached drivers. + */ +uint8_t FATFS_GetAttachedDriversNbr(void) +{ + return disk.nbr; +} + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ + |