Simple sd card driver (#162)

* fixed inline functions for modern C standart * more stack for application * added library * init fatfs library * fatfs example application * Merge with current master * fix typo and delete old files * cmsis os 2 reentrance fix * Reworked dependency wait to support multiple dependency * Build FatFS on local target, syscall.c is target-specific. * run local target ok * testcase for fatfs Co-authored-by: aanper <mail@s3f.ru>
2020-10-09 00:37:19 +10:00
parent 2ab6f82ddf
commit 59513b05ee
43 changed files with 41377 additions and 39 deletions
--- a/lib/fatfs/ff_gen_drv.c
+++ b/lib/fatfs/ff_gen_drv.c
@@ -0,0 +1,122 @@
+/**
+  ******************************************************************************
+  * @file    ff_gen_drv.c
+  * @author  MCD Application Team
+  * @brief   FatFs generic low level driver.
+  *****************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2017 STMicroelectronics. All rights reserved.
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                       opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+**/
+/* 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 parameter must be equal to 0
+  * @retval Returns 0 in case of success, otherwise 1.
+  */
+uint8_t FATFS_LinkDriverEx(const 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(const 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****/
+