diff options
| author | Dave Hylands | 2014-03-11 23:55:41 -0700 |
|---|---|---|
| committer | Dave Hylands | 2014-03-11 23:55:41 -0700 |
| commit | dd38d907244bc0e483c3d760f2ba464a394ec229 (patch) | |
| tree | 05869a4757c5a1b11b8baf206595551c7650f6e7 /stmhal/fatfs/src/ff_gen_drv.c | |
| parent | 8bfec2b53822e2b62c4577b32e0beae398a16297 (diff) | |
Initial checkin with STM HAL
This compiles and links, but hasn't been tested on a board
yet and even if it was run, it doesn't currently do anything.
Diffstat (limited to 'stmhal/fatfs/src/ff_gen_drv.c')
| -rw-r--r-- | stmhal/fatfs/src/ff_gen_drv.c | 99 |
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>© 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****/
+
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