--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_rng.c	Thu Mar 07 15:06:43 2019 +0100
@@ -0,0 +1,122 @@
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_ll_rng.c
+  * @author  MCD Application Team
+  * @brief   RNG LL module driver.
+  ******************************************************************************
+  * @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.
+  *
+  ******************************************************************************
+  */
+#if defined(USE_FULL_LL_DRIVER)
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_ll_rng.h"
+#include "stm32f4xx_ll_bus.h"
+
+#ifdef  USE_FULL_ASSERT
+#include "stm32_assert.h"
+#else
+#define assert_param(expr) ((void)0U)
+#endif
+
+/** @addtogroup STM32F4xx_LL_Driver
+  * @{
+  */
+
+#if defined (RNG)
+
+/** @addtogroup RNG_LL
+  * @{
+  */
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup RNG_LL_Exported_Functions
+  * @{
+  */
+
+/** @addtogroup RNG_LL_EF_Init
+  * @{
+  */
+
+/**
+  * @brief  De-initialize RNG registers (Registers restored to their default values).
+  * @param  RNGx RNG Instance
+  * @retval An ErrorStatus enumeration value:
+  *          - SUCCESS: RNG registers are de-initialized
+  *          - ERROR: not applicable
+  */
+ErrorStatus LL_RNG_DeInit(RNG_TypeDef *RNGx)
+{
+  /* Check the parameters */
+  assert_param(IS_RNG_ALL_INSTANCE(RNGx));
+
+#if  !defined (RCC_AHB2_SUPPORT)
+  /* Enable RNG reset state */
+  LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_RNG);
+
+  /* Release RNG from reset state */
+  LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_RNG);
+#else
+  /* Enable RNG reset state */
+  LL_AHB2_GRP1_ForceReset(LL_AHB2_GRP1_PERIPH_RNG);
+
+  /* Release RNG from reset state */
+  LL_AHB2_GRP1_ReleaseReset(LL_AHB2_GRP1_PERIPH_RNG);
+#endif
+
+  return (SUCCESS);
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* defined (RNG) */
+
+/**
+  * @}
+  */
+
+#endif /* USE_FULL_LL_DRIVER */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+