init commit

Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_rng.c

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+/**
+  ******************************************************************************
+  * @file    stm32f4xx_ll_rng.c
+  * @author  MCD Application Team
+  * @brief   RNG LL module driver.
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2016 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+#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 /* USE_FULL_ASSERT */
+
+/** @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(const RNG_TypeDef *RNGx)
+{
+  ErrorStatus status = SUCCESS;
+
+  /* Check the parameters */
+  assert_param(IS_RNG_ALL_INSTANCE(RNGx));
+  if (RNGx == RNG)
+  {
+#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 /* !RCC_AHB2_SUPPORT */
+  }
+  else
+  {
+    status = ERROR;
+  }
+
+  return status;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* RNG */
+
+/**
+  * @}
+  */
+
+#endif /* USE_FULL_LL_DRIVER */
+