1 files changed, 99 insertions, 0 deletions
diff --git a/stmhal/fatfs/src/ff_gen_drv.c b/stmhal/fatfs/src/ff_gen_drv.c
new file mode 100644
index 000000000..9703da2c5
--- /dev/null
+++ b/stmhal/fatfs/src/ff_gen_drv.c
@@ -0,0 +1,99 @@
+/**
+  ******************************************************************************
+  * @file    ff_gen_drv.c 
+  * @author  MCD Application Team
+  * @version V1.0.0
+  * @date    18-February-2014
+  * @brief   FatFs generic low level driver.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "ff_gen_drv.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+Disk_drvTypeDef  disk = {0};
+
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/**
+  * @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)
+{
+  uint8_t ret = 1;
+  uint8_t DiskNum = 0;
+  if(disk.nbr <= _VOLUMES)
+  {
+    disk.drv[disk.nbr] = drv;  
+    DiskNum = disk.nbr++;
+    path[0] = DiskNum + '0';
+    path[1] = ':';
+    path[2] = '/';
+    path[3] = 0;
+    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)
+{ 
+  uint8_t DiskNum = 0;
+  uint8_t ret = 1;
+  
+  if(disk.nbr >= 1)
+  {    
+    DiskNum = path[0] - '0';
+    if(DiskNum <= disk.nbr)
+    {
+      disk.drv[disk.nbr--] = 0;
+      ret = 0;
+    }
+  }
+  
+  return ret;
+}
+
+/**
+  * @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****/
+