| 1 | /**
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| 2 | ******************************************************************************
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| 3 | * @file stm32g0xx_ll_rng.c
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| 4 | * @author MCD Application Team
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| 5 | * @brief RNG LL module driver.
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| 6 | ******************************************************************************
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| 7 | * @attention
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| 8 | *
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| 9 | * <h2><center>© Copyright (c) 2018 STMicroelectronics.
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| 10 | * All rights reserved.</center></h2>
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| 11 | *
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| 12 | * This software component is licensed by ST under BSD 3-Clause license,
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| 13 | * the "License"; You may not use this file except in compliance with the
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| 14 | * License. You may obtain a copy of the License at:
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| 15 | * opensource.org/licenses/BSD-3-Clause
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| 16 | *
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| 17 | ******************************************************************************
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| 18 | */
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| 19 | #if defined(USE_FULL_LL_DRIVER)
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| 20 |
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| 21 | /* Includes ------------------------------------------------------------------*/
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| 22 | #include "stm32g0xx_ll_rng.h"
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| 23 | #include "stm32g0xx_ll_bus.h"
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| 24 |
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| 25 | #ifdef USE_FULL_ASSERT
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| 26 | #include "stm32_assert.h"
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| 27 | #else
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| 28 | #define assert_param(expr) ((void)0U)
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| 29 | #endif
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| 30 |
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| 31 | /** @addtogroup STM32G0xx_LL_Driver
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| 32 | * @{
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| 33 | */
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| 34 |
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| 35 | #if defined (RNG)
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| 36 |
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| 37 | /** @addtogroup RNG_LL
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| 38 | * @{
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| 39 | */
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| 40 |
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| 41 | /* Private types -------------------------------------------------------------*/
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| 42 | /* Private variables ---------------------------------------------------------*/
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| 43 | /* Private constants ---------------------------------------------------------*/
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| 44 | /* Private macros ------------------------------------------------------------*/
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| 45 | /** @defgroup RNG_LL_Private_Macros RNG Private Macros
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| 46 | * @{
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| 47 | */
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| 48 | #define IS_LL_RNG_CED(__MODE__) (((__MODE__) == LL_RNG_CED_ENABLE) || \
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| 49 | ((__MODE__) == LL_RNG_CED_DISABLE))
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| 50 |
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| 51 | /**
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| 52 | * @}
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| 53 | */
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| 54 |
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| 55 | /* Private function prototypes -----------------------------------------------*/
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| 56 |
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| 57 | /* Exported functions --------------------------------------------------------*/
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| 58 | /** @addtogroup RNG_LL_Exported_Functions
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| 59 | * @{
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| 60 | */
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| 61 |
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| 62 | /** @addtogroup RNG_LL_EF_Init
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| 63 | * @{
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| 64 | */
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| 65 |
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| 66 | /**
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| 67 | * @brief De-initialize RNG registers (Registers restored to their default values).
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| 68 | * @param RNGx RNG Instance
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| 69 | * @retval An ErrorStatus enumeration value:
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| 70 | * - SUCCESS: RNG registers are de-initialized
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| 71 | * - ERROR: not applicable
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| 72 | */
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| 73 | ErrorStatus LL_RNG_DeInit(RNG_TypeDef *RNGx)
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| 74 | {
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| 75 | /* Check the parameters */
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| 76 | assert_param(IS_RNG_ALL_INSTANCE(RNGx));
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| 77 |
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| 78 | /* Enable RNG reset state */
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| 79 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_RNG);
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| 80 |
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| 81 | /* Release RNG from reset state */
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| 82 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_RNG);
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| 83 |
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| 84 | return (SUCCESS);
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| 85 | }
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| 86 |
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| 87 | /**
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| 88 | * @brief Initialize RNG registers according to the specified parameters in RNG_InitStruct.
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| 89 | * @param RNGx RNG Instance
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| 90 | * @param RNG_InitStruct: pointer to a LL_RNG_InitTypeDef structure
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| 91 | * that contains the configuration information for the specified RNG peripheral.
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| 92 | * @retval An ErrorStatus enumeration value:
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| 93 | * - SUCCESS: RNG registers are initialized according to RNG_InitStruct content
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| 94 | * - ERROR: not applicable
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| 95 | */
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| 96 | ErrorStatus LL_RNG_Init(RNG_TypeDef *RNGx, LL_RNG_InitTypeDef *RNG_InitStruct)
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| 97 | {
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| 98 | /* Check the parameters */
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| 99 | assert_param(IS_RNG_ALL_INSTANCE(RNGx));
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| 100 | assert_param(IS_LL_RNG_CED(RNG_InitStruct->ClockErrorDetection));
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| 101 |
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| 102 | /* Clock Error Detection configuration */
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| 103 | MODIFY_REG(RNGx->CR, RNG_CR_CED, RNG_InitStruct->ClockErrorDetection);
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| 104 |
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| 105 | return (SUCCESS);
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| 106 | }
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| 107 |
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| 108 | /**
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| 109 | * @brief Set each @ref LL_RNG_InitTypeDef field to default value.
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| 110 | * @param RNG_InitStruct Pointer to a @ref LL_RNG_InitTypeDef structure
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| 111 | * whose fields will be set to default values.
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| 112 | * @retval None
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| 113 | */
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| 114 | void LL_RNG_StructInit(LL_RNG_InitTypeDef *RNG_InitStruct)
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| 115 | {
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| 116 | /* Set RNG_InitStruct fields to default values */
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| 117 | RNG_InitStruct->ClockErrorDetection = LL_RNG_CED_ENABLE;
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| 118 |
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| 119 | }
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| 120 |
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| 121 | /**
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| 122 | * @}
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| 123 | */
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| 124 |
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| 125 | /**
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| 126 | * @}
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| 127 | */
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| 128 |
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| 129 | /**
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| 130 | * @}
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| 131 | */
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| 132 |
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| 133 | #endif /* defined (RNG) */
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| 134 |
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| 135 | /**
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| 136 | * @}
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| 137 | */
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| 138 |
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| 139 | #endif /* USE_FULL_LL_DRIVER */
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| 140 |
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| 141 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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| 142 |
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