Initializing repository

This is the progress that I had made before putting this project on GitHub

Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_sai_ex.h

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+/**
+  ******************************************************************************
+  * @file    stm32f4xx_hal_sai_ex.h
+  * @author  MCD Application Team
+  * @brief   Header file of SAI Extension HAL module.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 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. Redistributions 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 its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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.
+  *
+  ******************************************************************************
+  */ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F4xx_HAL_SAI_EX_H
+#define __STM32F4xx_HAL_SAI_EX_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_hal_def.h"  
+
+/** @addtogroup STM32F4xx_HAL_Driver
+  * @{
+  */
+
+/** @addtogroup SAIEx
+  * @{
+  */
+
+#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) || \
+    defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx) || defined(STM32F413xx) || \
+    defined(STM32F423xx)
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/** @defgroup SAI_Clock_Source  SAI Clock Source
+  * @{
+  */
+#if defined(STM32F413xx) || defined(STM32F423xx)      
+#define SAI_CLKSOURCE_PLLI2S             0x00000000U
+#define SAI_CLKSOURCE_EXT                0x00100000U
+#define SAI_CLKSOURCE_PLLR               0x00200000U
+#define SAI_CLKSOURCE_HS                 0x00300000U
+#else      
+#define SAI_CLKSOURCE_PLLSAI             0x00000000U
+#define SAI_CLKSOURCE_PLLI2S             0x00100000U
+#define SAI_CLKSOURCE_EXT                0x00200000U
+#define SAI_CLKSOURCE_NA                 0x00400000U /*!< No applicable for STM32F446xx */
+#endif
+
+
+/**
+  * @}
+  */
+      
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup SAIEx_Exported_Functions
+  * @{
+  */
+
+/** @addtogroup SAIEx_Exported_Functions_Group1
+  * @{
+  */
+
+/* Extended features functions ************************************************/
+void SAI_BlockSynchroConfig(SAI_HandleTypeDef *hsai);
+uint32_t SAI_GetInputClock(SAI_HandleTypeDef *hsai);
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+#if defined(STM32F413xx) || defined(STM32F423xx) 
+#define IS_SAI_CLK_SOURCE(SOURCE) (((SOURCE) == SAI_CLKSOURCE_PLLI2S) ||\
+                                   ((SOURCE) == SAI_CLKSOURCE_EXT)||\
+                                   ((SOURCE) == SAI_CLKSOURCE_PLLR)||\
+                                   ((SOURCE) == SAI_CLKSOURCE_HS))
+#else
+#define IS_SAI_CLK_SOURCE(SOURCE) (((SOURCE) == SAI_CLKSOURCE_PLLSAI) ||\
+                                   ((SOURCE) == SAI_CLKSOURCE_EXT)||\
+                                   ((SOURCE) == SAI_CLKSOURCE_PLLI2S)||\
+                                   ((SOURCE) == SAI_CLKSOURCE_NA))
+#endif
+/* Private functions ---------------------------------------------------------*/
+
+#endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F446xx || STM32F469xx || STM32F479xx || STM32F413xx || STM32F423xx */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F4xx_HAL_SAI_EX_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/