| /** |
| ****************************************************************************** |
| * @file stm32l4xx_ll_rng.c |
| * @author MCD Application Team |
| * @brief RNG LL module driver. |
| ****************************************************************************** |
| * @attention |
| * |
| * <h2><center>© 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 "stm32l4xx_ll_rng.h" |
| #include "stm32l4xx_ll_bus.h" |
| |
| #ifdef USE_FULL_ASSERT |
| #include "stm32_assert.h" |
| #else |
| #define assert_param(expr) ((void)0U) |
| #endif |
| |
| /** @addtogroup STM32L4xx_LL_Driver |
| * @{ |
| */ |
| |
| #if defined (RNG) |
| |
| /** @addtogroup RNG_LL |
| * @{ |
| */ |
| |
| /* Private types -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private constants ---------------------------------------------------------*/ |
| /* Private macros ------------------------------------------------------------*/ |
| /** @addtogroup RNG_LL_Private_Macros |
| * @{ |
| */ |
| #if defined(RNG_CR_CED) |
| #define IS_LL_RNG_CED(__MODE__) (((__MODE__) == LL_RNG_CED_ENABLE) || \ |
| ((__MODE__) == LL_RNG_CED_DISABLE)) |
| #endif /* defined(RNG_CR_CED) */ |
| |
| /** |
| * @} |
| */ |
| |
| /* 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)); |
| |
| /* 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); |
| |
| return (SUCCESS); |
| } |
| |
| #if defined(RNG_CR_CED) |
| /** |
| * @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)); |
| |
| /* Clock Error Detection configuration */ |
| MODIFY_REG(RNGx->CR, RNG_CR_CED, RNG_InitStruct->ClockErrorDetection); |
| |
| 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 /* defined(RNG_CR_CED) */ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* defined (RNG) */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* USE_FULL_LL_DRIVER */ |
| |
| /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
| |