Gan likun / mbed1-dev

001

targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_ll_rng.c@0:13413ea9a877, 2022-06-12 (annotated)

Committer:
ganlikun
Date:
Sun Jun 12 14:02:44 2022 +0000
Revision:
0:13413ea9a877
00

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:13413ea9a877 1 /**
ganlikun 0:13413ea9a877 2 ******************************************************************************
ganlikun 0:13413ea9a877 3 * @file stm32f4xx_ll_rng.c
ganlikun 0:13413ea9a877 4 * @author MCD Application Team
ganlikun 0:13413ea9a877 5 * @version V1.7.1
ganlikun 0:13413ea9a877 6 * @date 14-April-2017
ganlikun 0:13413ea9a877 7 * @brief RNG LL module driver.
ganlikun 0:13413ea9a877 8 ******************************************************************************
ganlikun 0:13413ea9a877 9 * @attention
ganlikun 0:13413ea9a877 10 *
ganlikun 0:13413ea9a877 11 * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
ganlikun 0:13413ea9a877 12 *
ganlikun 0:13413ea9a877 13 * Redistribution and use in source and binary forms, with or without modification,
ganlikun 0:13413ea9a877 14 * are permitted provided that the following conditions are met:
ganlikun 0:13413ea9a877 15 * 1. Redistributions of source code must retain the above copyright notice,
ganlikun 0:13413ea9a877 16 * this list of conditions and the following disclaimer.
ganlikun 0:13413ea9a877 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
ganlikun 0:13413ea9a877 18 * this list of conditions and the following disclaimer in the documentation
ganlikun 0:13413ea9a877 19 * and/or other materials provided with the distribution.
ganlikun 0:13413ea9a877 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
ganlikun 0:13413ea9a877 21 * may be used to endorse or promote products derived from this software
ganlikun 0:13413ea9a877 22 * without specific prior written permission.
ganlikun 0:13413ea9a877 23 *
ganlikun 0:13413ea9a877 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
ganlikun 0:13413ea9a877 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
ganlikun 0:13413ea9a877 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
ganlikun 0:13413ea9a877 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
ganlikun 0:13413ea9a877 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
ganlikun 0:13413ea9a877 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
ganlikun 0:13413ea9a877 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
ganlikun 0:13413ea9a877 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
ganlikun 0:13413ea9a877 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
ganlikun 0:13413ea9a877 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ganlikun 0:13413ea9a877 34 *
ganlikun 0:13413ea9a877 35 ******************************************************************************
ganlikun 0:13413ea9a877 36 */
ganlikun 0:13413ea9a877 37 #if defined(USE_FULL_LL_DRIVER)
ganlikun 0:13413ea9a877 38
ganlikun 0:13413ea9a877 39 /* Includes ------------------------------------------------------------------*/
ganlikun 0:13413ea9a877 40 #include "stm32f4xx_ll_rng.h"
ganlikun 0:13413ea9a877 41 #include "stm32f4xx_ll_bus.h"
ganlikun 0:13413ea9a877 42
ganlikun 0:13413ea9a877 43 #ifdef USE_FULL_ASSERT
ganlikun 0:13413ea9a877 44 #include "stm32_assert.h"
ganlikun 0:13413ea9a877 45 #else
ganlikun 0:13413ea9a877 46 #define assert_param(expr) ((void)0U)
ganlikun 0:13413ea9a877 47 #endif
ganlikun 0:13413ea9a877 48
ganlikun 0:13413ea9a877 49 /** @addtogroup STM32F4xx_LL_Driver
ganlikun 0:13413ea9a877 50 * @{
ganlikun 0:13413ea9a877 51 */
ganlikun 0:13413ea9a877 52
ganlikun 0:13413ea9a877 53 #if defined (RNG)
ganlikun 0:13413ea9a877 54
ganlikun 0:13413ea9a877 55 /** @addtogroup RNG_LL
ganlikun 0:13413ea9a877 56 * @{
ganlikun 0:13413ea9a877 57 */
ganlikun 0:13413ea9a877 58
ganlikun 0:13413ea9a877 59 /* Private types -------------------------------------------------------------*/
ganlikun 0:13413ea9a877 60 /* Private variables ---------------------------------------------------------*/
ganlikun 0:13413ea9a877 61 /* Private constants ---------------------------------------------------------*/
ganlikun 0:13413ea9a877 62 /* Private macros ------------------------------------------------------------*/
ganlikun 0:13413ea9a877 63 /* Private function prototypes -----------------------------------------------*/
ganlikun 0:13413ea9a877 64
ganlikun 0:13413ea9a877 65 /* Exported functions --------------------------------------------------------*/
ganlikun 0:13413ea9a877 66 /** @addtogroup RNG_LL_Exported_Functions
ganlikun 0:13413ea9a877 67 * @{
ganlikun 0:13413ea9a877 68 */
ganlikun 0:13413ea9a877 69
ganlikun 0:13413ea9a877 70 /** @addtogroup RNG_LL_EF_Init
ganlikun 0:13413ea9a877 71 * @{
ganlikun 0:13413ea9a877 72 */
ganlikun 0:13413ea9a877 73
ganlikun 0:13413ea9a877 74 /**
ganlikun 0:13413ea9a877 75 * @brief De-initialize RNG registers (Registers restored to their default values).
ganlikun 0:13413ea9a877 76 * @param RNGx RNG Instance
ganlikun 0:13413ea9a877 77 * @retval An ErrorStatus enumeration value:
ganlikun 0:13413ea9a877 78 * - SUCCESS: RNG registers are de-initialized
ganlikun 0:13413ea9a877 79 * - ERROR: not applicable
ganlikun 0:13413ea9a877 80 */
ganlikun 0:13413ea9a877 81 ErrorStatus LL_RNG_DeInit(RNG_TypeDef *RNGx)
ganlikun 0:13413ea9a877 82 {
ganlikun 0:13413ea9a877 83 /* Check the parameters */
ganlikun 0:13413ea9a877 84 assert_param(IS_RNG_ALL_INSTANCE(RNGx));
ganlikun 0:13413ea9a877 85
ganlikun 0:13413ea9a877 86 #if !defined (RCC_AHB2_SUPPORT)
ganlikun 0:13413ea9a877 87 /* Enable RNG reset state */
ganlikun 0:13413ea9a877 88 LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_RNG);
ganlikun 0:13413ea9a877 89
ganlikun 0:13413ea9a877 90 /* Release RNG from reset state */
ganlikun 0:13413ea9a877 91 LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_RNG);
ganlikun 0:13413ea9a877 92 #else
ganlikun 0:13413ea9a877 93 /* Enable RNG reset state */
ganlikun 0:13413ea9a877 94 LL_AHB2_GRP1_ForceReset(LL_AHB2_GRP1_PERIPH_RNG);
ganlikun 0:13413ea9a877 95
ganlikun 0:13413ea9a877 96 /* Release RNG from reset state */
ganlikun 0:13413ea9a877 97 LL_AHB2_GRP1_ReleaseReset(LL_AHB2_GRP1_PERIPH_RNG);
ganlikun 0:13413ea9a877 98 #endif
ganlikun 0:13413ea9a877 99
ganlikun 0:13413ea9a877 100 return (SUCCESS);
ganlikun 0:13413ea9a877 101 }
ganlikun 0:13413ea9a877 102
ganlikun 0:13413ea9a877 103 /**
ganlikun 0:13413ea9a877 104 * @}
ganlikun 0:13413ea9a877 105 */
ganlikun 0:13413ea9a877 106
ganlikun 0:13413ea9a877 107 /**
ganlikun 0:13413ea9a877 108 * @}
ganlikun 0:13413ea9a877 109 */
ganlikun 0:13413ea9a877 110
ganlikun 0:13413ea9a877 111 /**
ganlikun 0:13413ea9a877 112 * @}
ganlikun 0:13413ea9a877 113 */
ganlikun 0:13413ea9a877 114
ganlikun 0:13413ea9a877 115 #endif /* defined (RNG) */
ganlikun 0:13413ea9a877 116
ganlikun 0:13413ea9a877 117 /**
ganlikun 0:13413ea9a877 118 * @}
ganlikun 0:13413ea9a877 119 */
ganlikun 0:13413ea9a877 120
ganlikun 0:13413ea9a877 121 #endif /* USE_FULL_LL_DRIVER */
ganlikun 0:13413ea9a877 122
ganlikun 0:13413ea9a877 123 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
ganlikun 0:13413ea9a877 124
ganlikun 0:13413ea9a877 125