From 86608c6770cf08c138a2bdab5855072f64be09ef Mon Sep 17 00:00:00 2001
From: joshua <joshua@joshuayun.com>
Date: Sat, 30 Dec 2023 23:54:31 -0500
Subject: initial commit

---
 .../STM32H7xx_HAL_Driver/Src/stm32h7xx_ll_rng.c    | 165 +++++++++++++++++++++
 1 file changed, 165 insertions(+)
 create mode 100644 Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_ll_rng.c

(limited to 'Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_ll_rng.c')

diff --git a/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_ll_rng.c b/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_ll_rng.c
new file mode 100644
index 0000000..a3f51d3
--- /dev/null
+++ b/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_ll_rng.c
@@ -0,0 +1,165 @@
+/**
+  ******************************************************************************
+  * @file    stm32h7xx_ll_rng.c
+  * @author  MCD Application Team
+  * @brief   RNG LL module driver.
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2017 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 "stm32h7xx_ll_rng.h"
+#include "stm32h7xx_ll_bus.h"
+
+#ifdef  USE_FULL_ASSERT
+#include "stm32_assert.h"
+#else
+#define assert_param(expr) ((void)0U)
+#endif /* USE_FULL_ASSERT */
+
+/** @addtogroup STM32H7xx_LL_Driver
+  * @{
+  */
+
+#if defined (RNG)
+
+/** @addtogroup RNG_LL
+  * @{
+  */
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/** @defgroup RNG_LL_Private_Macros RNG Private Macros
+  * @{
+  */
+#define IS_LL_RNG_CED(__MODE__) (((__MODE__) == LL_RNG_CED_ENABLE) || \
+                                 ((__MODE__) == LL_RNG_CED_DISABLE))
+
+#if defined(RNG_CR_CONDRST)
+#define IS_LL_RNG_CLOCK_DIVIDER(__CLOCK_DIV__) ((__CLOCK_DIV__) <=0x0Fu)
+
+
+#define IS_LL_RNG_NIST_COMPLIANCE(__NIST_COMPLIANCE__) (((__NIST_COMPLIANCE__) == LL_RNG_NIST_COMPLIANT) || \
+                                                        ((__NIST_COMPLIANCE__) == LL_RNG_NOTNIST_COMPLIANT))
+
+#define IS_LL_RNG_CONFIG1 (__CONFIG1__) ((__CONFIG1__) <= 0x3FUL)
+
+#define IS_LL_RNG_CONFIG2 (__CONFIG2__) ((__CONFIG2__) <= 0x07UL)
+
+#define IS_LL_RNG_CONFIG3 (__CONFIG3__) ((__CONFIG3__) <= 0xFUL)
+#endif /* RNG_CR_CONDRST*/
+/**
+  * @}
+  */
+/* 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)
+{
+  ErrorStatus status = SUCCESS;
+
+  /* Check the parameters */
+  assert_param(IS_RNG_ALL_INSTANCE(RNGx));
+  if (RNGx == RNG)
+  {
+    /* 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);
+  }
+  else
+  {
+    status = ERROR;
+  }
+
+  return status;
+}
+
+/**
+  * @brief  Initialize RNG registers according to the specified parameters in RNG_InitStruct.
+  * @param  RNGx RNG Instance
+  * @param  RNG_InitStruct pointer to a LL_RNG_InitTypeDef structure
+  *         that contains the configuration information for the specified RNG peripheral.
+  * @retval An ErrorStatus enumeration value:
+  *          - SUCCESS: RNG registers are initialized according to RNG_InitStruct content
+  *          - ERROR: not applicable
+  */
+ErrorStatus LL_RNG_Init(RNG_TypeDef *RNGx, LL_RNG_InitTypeDef *RNG_InitStruct)
+{
+  /* Check the parameters */
+  assert_param(IS_RNG_ALL_INSTANCE(RNGx));
+  assert_param(IS_LL_RNG_CED(RNG_InitStruct->ClockErrorDetection));
+
+#if defined(RNG_CR_CONDRST)
+  /* Clock Error Detection Configuration when CONDRT bit is set to 1 */
+  MODIFY_REG(RNGx->CR, RNG_CR_CED | RNG_CR_CONDRST, RNG_InitStruct->ClockErrorDetection | RNG_CR_CONDRST);
+  /* Writing bits CONDRST=0*/
+  CLEAR_BIT(RNGx->CR, RNG_CR_CONDRST);
+#else
+  /* Clock Error Detection configuration */
+  MODIFY_REG(RNGx->CR, RNG_CR_CED, RNG_InitStruct->ClockErrorDetection);
+#endif /* RNG_CR_CONDRST */
+
+  return (SUCCESS);
+}
+
+/**
+  * @brief Set each @ref LL_RNG_InitTypeDef field to default value.
+  * @param RNG_InitStruct pointer to a @ref LL_RNG_InitTypeDef structure
+  *                       whose fields will be set to default values.
+  * @retval None
+  */
+void LL_RNG_StructInit(LL_RNG_InitTypeDef *RNG_InitStruct)
+{
+  /* Set RNG_InitStruct fields to default values */
+  RNG_InitStruct->ClockErrorDetection = LL_RNG_CED_ENABLE;
+
+}
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* RNG */
+
+/**
+  * @}
+  */
+
+#endif /* USE_FULL_LL_DRIVER */
+
-- 
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