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>

firmware/targets/f2/Src/fatfs/fatfs.h

@@ -0,0 +1,49 @@
+/**
+  ******************************************************************************
+  * @file   fatfs.h
+  * @brief  Header for fatfs applications
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under Ultimate Liberty license
+  * SLA0044, the "License"; You may not use this file except in compliance with
+  * the License. You may obtain a copy of the License at:
+  *                             www.st.com/SLA0044
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __fatfs_H
+#define __fatfs_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "fatfs/ff.h"
+#include "fatfs/ff_gen_drv.h"
+#include "user_diskio.h" /* defines USER_Driver as external */
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+extern uint8_t retUSER; /* Return value for USER */
+extern char USERPath[4]; /* USER logical drive path */
+extern FATFS USERFatFS; /* File system object for USER logical drive */
+extern FIL USERFile; /* File object for USER */
+
+void MX_FATFS_Init(void);
+
+/* USER CODE BEGIN Prototypes */
+
+/* USER CODE END Prototypes */
+#ifdef __cplusplus
+}
+#endif
+#endif /*__fatfs_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/