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57 changed files with 49795 additions and 3 deletions
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/**
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******************************************************************************
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* @file stm32f0xx_ll_exti.c
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* @author MCD Application Team
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* @brief EXTI LL module driver.
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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*/
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#if defined(USE_FULL_LL_DRIVER)
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f0xx_ll_exti.h"
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#ifdef USE_FULL_ASSERT
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#include "stm32_assert.h"
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#else
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#define assert_param(expr) ((void)0U)
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#endif
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/** @addtogroup STM32F0xx_LL_Driver
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* @{
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*/
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#if defined (EXTI)
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/** @defgroup EXTI_LL EXTI
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* @{
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*/
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/* Private types -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private constants ---------------------------------------------------------*/
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/* Private macros ------------------------------------------------------------*/
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/** @addtogroup EXTI_LL_Private_Macros
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* @{
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*/
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#define IS_LL_EXTI_LINE_0_31(__VALUE__) (((__VALUE__) & ~LL_EXTI_LINE_ALL_0_31) == 0x00000000U)
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#define IS_LL_EXTI_MODE(__VALUE__) (((__VALUE__) == LL_EXTI_MODE_IT) \
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|| ((__VALUE__) == LL_EXTI_MODE_EVENT) \
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|| ((__VALUE__) == LL_EXTI_MODE_IT_EVENT))
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#define IS_LL_EXTI_TRIGGER(__VALUE__) (((__VALUE__) == LL_EXTI_TRIGGER_NONE) \
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|| ((__VALUE__) == LL_EXTI_TRIGGER_RISING) \
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|| ((__VALUE__) == LL_EXTI_TRIGGER_FALLING) \
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|| ((__VALUE__) == LL_EXTI_TRIGGER_RISING_FALLING))
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/**
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* @}
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*/
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/* Private function prototypes -----------------------------------------------*/
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/* Exported functions --------------------------------------------------------*/
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/** @addtogroup EXTI_LL_Exported_Functions
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* @{
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*/
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/** @addtogroup EXTI_LL_EF_Init
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* @{
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*/
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/**
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* @brief De-initialize the EXTI registers to their default reset values.
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* @retval An ErrorStatus enumeration value:
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* - SUCCESS: EXTI registers are de-initialized
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* - ERROR: not applicable
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*/
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uint32_t LL_EXTI_DeInit(void)
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{
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/* Interrupt mask register set to default reset values */
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#if defined(STM32F030x6) || defined(STM32F031x6) ||defined(STM32F038xx)
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LL_EXTI_WriteReg(IMR, 0x0FF40000U);
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#elif defined(STM32F070x6) || defined(STM32F042x6) || defined(STM32F048xx)
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LL_EXTI_WriteReg(IMR, 0x7FF40000U);
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#elif defined(STM32F030x8) || defined(STM32F051x8) || defined(STM32F058xx)
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LL_EXTI_WriteReg(IMR, 0x0F940000U);
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#else
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LL_EXTI_WriteReg(IMR, 0x7F840000U);
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#endif
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/* Event mask register set to default reset values */
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LL_EXTI_WriteReg(EMR, 0x00000000U);
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/* Rising Trigger selection register set to default reset values */
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LL_EXTI_WriteReg(RTSR, 0x00000000U);
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/* Falling Trigger selection register set to default reset values */
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LL_EXTI_WriteReg(FTSR, 0x00000000U);
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/* Software interrupt event register set to default reset values */
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LL_EXTI_WriteReg(SWIER, 0x00000000U);
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/* Pending register clear */
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LL_EXTI_WriteReg(PR, 0x007BFFFFU);
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return SUCCESS;
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}
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/**
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* @brief Initialize the EXTI registers according to the specified parameters in EXTI_InitStruct.
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* @param EXTI_InitStruct pointer to a @ref LL_EXTI_InitTypeDef structure.
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* @retval An ErrorStatus enumeration value:
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* - SUCCESS: EXTI registers are initialized
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* - ERROR: not applicable
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*/
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uint32_t LL_EXTI_Init(LL_EXTI_InitTypeDef *EXTI_InitStruct)
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{
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ErrorStatus status = SUCCESS;
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/* Check the parameters */
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assert_param(IS_LL_EXTI_LINE_0_31(EXTI_InitStruct->Line_0_31));
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assert_param(IS_FUNCTIONAL_STATE(EXTI_InitStruct->LineCommand));
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assert_param(IS_LL_EXTI_MODE(EXTI_InitStruct->Mode));
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/* ENABLE LineCommand */
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if (EXTI_InitStruct->LineCommand != DISABLE)
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{
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assert_param(IS_LL_EXTI_TRIGGER(EXTI_InitStruct->Trigger));
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/* Configure EXTI Lines in range from 0 to 31 */
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if (EXTI_InitStruct->Line_0_31 != LL_EXTI_LINE_NONE)
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{
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switch (EXTI_InitStruct->Mode)
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{
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case LL_EXTI_MODE_IT:
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/* First Disable Event on provided Lines */
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LL_EXTI_DisableEvent_0_31(EXTI_InitStruct->Line_0_31);
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/* Then Enable IT on provided Lines */
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LL_EXTI_EnableIT_0_31(EXTI_InitStruct->Line_0_31);
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break;
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case LL_EXTI_MODE_EVENT:
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/* First Disable IT on provided Lines */
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LL_EXTI_DisableIT_0_31(EXTI_InitStruct->Line_0_31);
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/* Then Enable Event on provided Lines */
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LL_EXTI_EnableEvent_0_31(EXTI_InitStruct->Line_0_31);
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break;
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case LL_EXTI_MODE_IT_EVENT:
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/* Directly Enable IT & Event on provided Lines */
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LL_EXTI_EnableIT_0_31(EXTI_InitStruct->Line_0_31);
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LL_EXTI_EnableEvent_0_31(EXTI_InitStruct->Line_0_31);
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break;
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default:
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status = ERROR;
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break;
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}
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if (EXTI_InitStruct->Trigger != LL_EXTI_TRIGGER_NONE)
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{
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switch (EXTI_InitStruct->Trigger)
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{
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case LL_EXTI_TRIGGER_RISING:
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/* First Disable Falling Trigger on provided Lines */
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LL_EXTI_DisableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
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/* Then Enable Rising Trigger on provided Lines */
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LL_EXTI_EnableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
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break;
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case LL_EXTI_TRIGGER_FALLING:
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/* First Disable Rising Trigger on provided Lines */
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LL_EXTI_DisableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
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/* Then Enable Falling Trigger on provided Lines */
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LL_EXTI_EnableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
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break;
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case LL_EXTI_TRIGGER_RISING_FALLING:
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LL_EXTI_EnableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
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LL_EXTI_EnableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
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break;
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default:
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status = ERROR;
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break;
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}
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}
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}
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}
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/* DISABLE LineCommand */
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else
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{
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/* De-configure EXTI Lines in range from 0 to 31 */
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LL_EXTI_DisableIT_0_31(EXTI_InitStruct->Line_0_31);
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LL_EXTI_DisableEvent_0_31(EXTI_InitStruct->Line_0_31);
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}
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return status;
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}
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/**
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* @brief Set each @ref LL_EXTI_InitTypeDef field to default value.
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* @param EXTI_InitStruct Pointer to a @ref LL_EXTI_InitTypeDef structure.
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* @retval None
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*/
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void LL_EXTI_StructInit(LL_EXTI_InitTypeDef *EXTI_InitStruct)
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{
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EXTI_InitStruct->Line_0_31 = LL_EXTI_LINE_NONE;
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EXTI_InitStruct->LineCommand = DISABLE;
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EXTI_InitStruct->Mode = LL_EXTI_MODE_IT;
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EXTI_InitStruct->Trigger = LL_EXTI_TRIGGER_FALLING;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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#endif /* defined (EXTI) */
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/**
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* @}
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*/
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#endif /* USE_FULL_LL_DRIVER */
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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/**
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******************************************************************************
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* @file stm32f0xx_ll_gpio.c
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* @author MCD Application Team
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* @brief GPIO LL module driver.
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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*/
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#if defined(USE_FULL_LL_DRIVER)
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f0xx_ll_gpio.h"
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#include "stm32f0xx_ll_bus.h"
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#ifdef USE_FULL_ASSERT
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#include "stm32_assert.h"
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#else
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#define assert_param(expr) ((void)0U)
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#endif
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/** @addtogroup STM32F0xx_LL_Driver
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* @{
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*/
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#if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF)
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/** @addtogroup GPIO_LL
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* @{
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*/
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/** MISRA C:2012 deviation rule has been granted for following rules:
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* Rule-12.2 - Medium: RHS argument is in interval [0,INF] which is out of
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* range of the shift operator in following API :
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* LL_GPIO_Init
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* LL_GPIO_DeInit
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* LL_GPIO_SetPinMode
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* LL_GPIO_GetPinMode
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* LL_GPIO_SetPinSpeed
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* LL_GPIO_GetPinSpeed
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* LL_GPIO_SetPinPull
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* LL_GPIO_GetPinPull
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* LL_GPIO_GetAFPin_0_7
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* LL_GPIO_SetAFPin_0_7
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* LL_GPIO_SetAFPin_8_15
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* LL_GPIO_GetAFPin_8_15
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*/
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/* Private types -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private constants ---------------------------------------------------------*/
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/* Private macros ------------------------------------------------------------*/
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/** @addtogroup GPIO_LL_Private_Macros
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* @{
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*/
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#define IS_LL_GPIO_PIN(__VALUE__) (((0x00u) < (__VALUE__)) && ((__VALUE__) <= (LL_GPIO_PIN_ALL)))
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#define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_INPUT) ||\
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((__VALUE__) == LL_GPIO_MODE_OUTPUT) ||\
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((__VALUE__) == LL_GPIO_MODE_ALTERNATE) ||\
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((__VALUE__) == LL_GPIO_MODE_ANALOG))
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#define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) ||\
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((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN))
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#define IS_LL_GPIO_SPEED(__VALUE__) (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW) ||\
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((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM) ||\
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((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH))
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#define IS_LL_GPIO_PULL(__VALUE__) (((__VALUE__) == LL_GPIO_PULL_NO) ||\
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((__VALUE__) == LL_GPIO_PULL_UP) ||\
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((__VALUE__) == LL_GPIO_PULL_DOWN))
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#define IS_LL_GPIO_ALTERNATE(__VALUE__) (((__VALUE__) == LL_GPIO_AF_0 ) ||\
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((__VALUE__) == LL_GPIO_AF_1 ) ||\
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((__VALUE__) == LL_GPIO_AF_2 ) ||\
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((__VALUE__) == LL_GPIO_AF_3 ) ||\
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((__VALUE__) == LL_GPIO_AF_4 ) ||\
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((__VALUE__) == LL_GPIO_AF_5 ) ||\
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((__VALUE__) == LL_GPIO_AF_6 ) ||\
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((__VALUE__) == LL_GPIO_AF_7 ))
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/**
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* @}
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*/
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/* Private function prototypes -----------------------------------------------*/
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/* Exported functions --------------------------------------------------------*/
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/** @addtogroup GPIO_LL_Exported_Functions
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* @{
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*/
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/** @addtogroup GPIO_LL_EF_Init
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* @{
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*/
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/**
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* @brief De-initialize GPIO registers (Registers restored to their default values).
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* @param GPIOx GPIO Port
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* @retval An ErrorStatus enumeration value:
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* - SUCCESS: GPIO registers are de-initialized
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* - ERROR: Wrong GPIO Port
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*/
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ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx)
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{
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ErrorStatus status = SUCCESS;
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
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/* Force and Release reset on clock of GPIOx Port */
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if (GPIOx == GPIOA)
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{
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LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOA);
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LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOA);
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}
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else if (GPIOx == GPIOB)
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{
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LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOB);
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LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOB);
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}
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else if (GPIOx == GPIOC)
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{
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LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOC);
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LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOC);
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}
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#if defined(GPIOD)
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else if (GPIOx == GPIOD)
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{
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LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOD);
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LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOD);
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}
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#endif /* GPIOD */
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#if defined(GPIOE)
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else if (GPIOx == GPIOE)
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{
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LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOE);
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LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOE);
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}
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#endif /* GPIOE */
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#if defined(GPIOF)
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else if (GPIOx == GPIOF)
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{
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LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOF);
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LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOF);
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}
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#endif /* GPIOF */
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else
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{
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status = ERROR;
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}
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return (status);
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}
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/**
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* @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct.
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* @param GPIOx GPIO Port
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* @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure
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* that contains the configuration information for the specified GPIO peripheral.
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* @retval An ErrorStatus enumeration value:
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* - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content
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* - ERROR: Not applicable
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*/
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ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct)
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{
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uint32_t pinpos;
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uint32_t currentpin;
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
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assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin));
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assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode));
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assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull));
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/* ------------------------- Configure the port pins ---------------- */
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/* Initialize pinpos on first pin set */
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pinpos = 0;
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/* Configure the port pins */
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while (((GPIO_InitStruct->Pin) >> pinpos) != 0x00u)
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{
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/* Get current io position */
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currentpin = (GPIO_InitStruct->Pin) & (0x00000001uL << pinpos);
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if (currentpin != 0x00u)
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{
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if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE))
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{
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/* Check Speed mode parameters */
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assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed));
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/* Speed mode configuration */
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LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed);
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/* Check Output mode parameters */
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assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType));
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/* Output mode configuration*/
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LL_GPIO_SetPinOutputType(GPIOx, GPIO_InitStruct->Pin, GPIO_InitStruct->OutputType);
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}
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/* Pull-up Pull down resistor configuration*/
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LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull);
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if (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)
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{
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/* Check Alternate parameter */
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assert_param(IS_LL_GPIO_ALTERNATE(GPIO_InitStruct->Alternate));
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/* Speed mode configuration */
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if (currentpin < LL_GPIO_PIN_8)
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{
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LL_GPIO_SetAFPin_0_7(GPIOx, currentpin, GPIO_InitStruct->Alternate);
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}
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else
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{
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LL_GPIO_SetAFPin_8_15(GPIOx, currentpin, GPIO_InitStruct->Alternate);
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}
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}
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||||
|
||||
/* Pin Mode configuration */
|
||||
LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode);
|
||||
}
|
||||
pinpos++;
|
||||
}
|
||||
|
||||
return (SUCCESS);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Set each @ref LL_GPIO_InitTypeDef field to default value.
|
||||
* @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure
|
||||
* whose fields will be set to default values.
|
||||
* @retval None
|
||||
*/
|
||||
|
||||
void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct)
|
||||
{
|
||||
/* Reset GPIO init structure parameters values */
|
||||
GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL;
|
||||
GPIO_InitStruct->Mode = LL_GPIO_MODE_ANALOG;
|
||||
GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW;
|
||||
GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_PUSHPULL;
|
||||
GPIO_InitStruct->Pull = LL_GPIO_PULL_NO;
|
||||
GPIO_InitStruct->Alternate = LL_GPIO_AF_0;
|
||||
}
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
#endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) */
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
#endif /* USE_FULL_LL_DRIVER */
|
||||
|
||||
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
||||
|
|
@ -0,0 +1,86 @@
|
|||
/**
|
||||
******************************************************************************
|
||||
* @file stm32f0xx_ll_pwr.c
|
||||
* @author MCD Application Team
|
||||
* @brief PWR LL module driver.
|
||||
******************************************************************************
|
||||
* @attention
|
||||
*
|
||||
* <h2><center>© Copyright (c) 2016 STMicroelectronics.
|
||||
* All rights reserved.</center></h2>
|
||||
*
|
||||
* This software component is licensed by ST under BSD 3-Clause license,
|
||||
* the "License"; You may not use this file except in compliance with the
|
||||
* License. You may obtain a copy of the License at:
|
||||
* opensource.org/licenses/BSD-3-Clause
|
||||
*
|
||||
******************************************************************************
|
||||
*/
|
||||
|
||||
#if defined(USE_FULL_LL_DRIVER)
|
||||
|
||||
/* Includes ------------------------------------------------------------------*/
|
||||
#include "stm32f0xx_ll_pwr.h"
|
||||
#include "stm32f0xx_ll_bus.h"
|
||||
|
||||
/** @addtogroup STM32F0xx_LL_Driver
|
||||
* @{
|
||||
*/
|
||||
|
||||
#if defined(PWR)
|
||||
|
||||
/** @defgroup PWR_LL PWR
|
||||
* @{
|
||||
*/
|
||||
|
||||
/* Private types -------------------------------------------------------------*/
|
||||
/* Private variables ---------------------------------------------------------*/
|
||||
/* Private constants ---------------------------------------------------------*/
|
||||
/* Private macros ------------------------------------------------------------*/
|
||||
/* Private function prototypes -----------------------------------------------*/
|
||||
|
||||
/* Exported functions --------------------------------------------------------*/
|
||||
/** @addtogroup PWR_LL_Exported_Functions
|
||||
* @{
|
||||
*/
|
||||
|
||||
/** @addtogroup PWR_LL_EF_Init
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @brief De-initialize the PWR registers to their default reset values.
|
||||
* @retval An ErrorStatus enumeration value:
|
||||
* - SUCCESS: PWR registers are de-initialized
|
||||
* - ERROR: not applicable
|
||||
*/
|
||||
ErrorStatus LL_PWR_DeInit(void)
|
||||
{
|
||||
/* Force reset of PWR clock */
|
||||
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_PWR);
|
||||
|
||||
/* Release reset of PWR clock */
|
||||
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_PWR);
|
||||
|
||||
return SUCCESS;
|
||||
}
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
#endif /* defined(PWR) */
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
#endif /* USE_FULL_LL_DRIVER */
|
||||
|
||||
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
||||
|
|
@ -0,0 +1,609 @@
|
|||
/**
|
||||
******************************************************************************
|
||||
* @file stm32f0xx_ll_rcc.c
|
||||
* @author MCD Application Team
|
||||
* @brief RCC LL module driver.
|
||||
******************************************************************************
|
||||
* @attention
|
||||
*
|
||||
* <h2><center>© Copyright (c) 2016 STMicroelectronics.
|
||||
* All rights reserved.</center></h2>
|
||||
*
|
||||
* This software component is licensed by ST under BSD 3-Clause license,
|
||||
* the "License"; You may not use this file except in compliance with the
|
||||
* License. You may obtain a copy of the License at:
|
||||
* opensource.org/licenses/BSD-3-Clause
|
||||
*
|
||||
******************************************************************************
|
||||
*/
|
||||
|
||||
#if defined(USE_FULL_LL_DRIVER)
|
||||
|
||||
/* Includes ------------------------------------------------------------------*/
|
||||
#include "stm32f0xx_ll_rcc.h"
|
||||
#ifdef USE_FULL_ASSERT
|
||||
#include "stm32_assert.h"
|
||||
#else
|
||||
#define assert_param(expr) ((void)0U)
|
||||
#endif /* USE_FULL_ASSERT */
|
||||
/** @addtogroup STM32F0xx_LL_Driver
|
||||
* @{
|
||||
*/
|
||||
|
||||
#if defined(RCC)
|
||||
|
||||
/** @defgroup RCC_LL RCC
|
||||
* @{
|
||||
*/
|
||||
|
||||
/* Private types -------------------------------------------------------------*/
|
||||
/* Private variables ---------------------------------------------------------*/
|
||||
|
||||
/* Private constants ---------------------------------------------------------*/
|
||||
/* Private macros ------------------------------------------------------------*/
|
||||
/** @addtogroup RCC_LL_Private_Macros
|
||||
* @{
|
||||
*/
|
||||
#if defined(RCC_CFGR3_USART2SW) && defined(RCC_CFGR3_USART3SW)
|
||||
#define IS_LL_RCC_USART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USART1_CLKSOURCE) \
|
||||
|| ((__VALUE__) == LL_RCC_USART2_CLKSOURCE) \
|
||||
|| ((__VALUE__) == LL_RCC_USART3_CLKSOURCE))
|
||||
#elif defined(RCC_CFGR3_USART2SW) && !defined(RCC_CFGR3_USART3SW)
|
||||
#define IS_LL_RCC_USART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USART1_CLKSOURCE) \
|
||||
|| ((__VALUE__) == LL_RCC_USART2_CLKSOURCE))
|
||||
#elif defined(RCC_CFGR3_USART3SW) && !defined(RCC_CFGR3_USART2SW)
|
||||
#define IS_LL_RCC_USART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USART1_CLKSOURCE) \
|
||||
|| ((__VALUE__) == LL_RCC_USART3_CLKSOURCE))
|
||||
#else
|
||||
#define IS_LL_RCC_USART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USART1_CLKSOURCE))
|
||||
#endif /* RCC_CFGR3_USART2SW && RCC_CFGR3_USART3SW */
|
||||
|
||||
#define IS_LL_RCC_I2C_CLKSOURCE(__VALUE__) ((__VALUE__) == LL_RCC_I2C1_CLKSOURCE)
|
||||
|
||||
#if defined(USB)
|
||||
#define IS_LL_RCC_USB_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USB_CLKSOURCE))
|
||||
#endif /* USB */
|
||||
|
||||
#if defined(CEC)
|
||||
#define IS_LL_RCC_CEC_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_CEC_CLKSOURCE))
|
||||
#endif /* CEC */
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/* Private function prototypes -----------------------------------------------*/
|
||||
/** @defgroup RCC_LL_Private_Functions RCC Private functions
|
||||
* @{
|
||||
*/
|
||||
uint32_t RCC_GetSystemClockFreq(void);
|
||||
uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency);
|
||||
uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency);
|
||||
uint32_t RCC_PLL_GetFreqDomain_SYS(void);
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
|
||||
/* Exported functions --------------------------------------------------------*/
|
||||
/** @addtogroup RCC_LL_Exported_Functions
|
||||
* @{
|
||||
*/
|
||||
|
||||
/** @addtogroup RCC_LL_EF_Init
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @brief Reset the RCC clock configuration to the default reset state.
|
||||
* @note The default reset state of the clock configuration is given below:
|
||||
* - HSI ON and used as system clock source
|
||||
* - HSE and PLL OFF
|
||||
* - AHB and APB1 prescaler set to 1.
|
||||
* - CSS, MCO OFF
|
||||
* - All interrupts disabled
|
||||
* @note This function doesn't modify the configuration of the
|
||||
* - Peripheral clocks
|
||||
* - LSI, LSE and RTC clocks
|
||||
* @retval An ErrorStatus enumeration value:
|
||||
* - SUCCESS: RCC registers are de-initialized
|
||||
* - ERROR: not applicable
|
||||
*/
|
||||
ErrorStatus LL_RCC_DeInit(void)
|
||||
{
|
||||
__IO uint32_t vl_mask;
|
||||
|
||||
/* Set HSION bit */
|
||||
LL_RCC_HSI_Enable();
|
||||
|
||||
/* Wait for HSI READY bit */
|
||||
while(LL_RCC_HSI_IsReady() != 1U)
|
||||
{}
|
||||
|
||||
/* Set HSITRIM bits to the reset value*/
|
||||
LL_RCC_HSI_SetCalibTrimming(0x10U);
|
||||
|
||||
/* Reset SW, HPRE, PPRE and MCOSEL bits */
|
||||
vl_mask = 0xFFFFFFFFU;
|
||||
CLEAR_BIT(vl_mask, (RCC_CFGR_SW | RCC_CFGR_HPRE | RCC_CFGR_PPRE | RCC_CFGR_MCOSEL));
|
||||
|
||||
/* Write new value in CFGR register */
|
||||
LL_RCC_WriteReg(CFGR, vl_mask);
|
||||
|
||||
/* Wait till system clock source is ready */
|
||||
while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSI)
|
||||
{}
|
||||
|
||||
/* Read CR register */
|
||||
vl_mask = LL_RCC_ReadReg(CR);
|
||||
|
||||
/* Reset HSEON, CSSON, PLLON bits */
|
||||
CLEAR_BIT(vl_mask, (RCC_CR_PLLON | RCC_CR_CSSON | RCC_CR_HSEON));
|
||||
|
||||
/* Write new value in CR register */
|
||||
LL_RCC_WriteReg(CR, vl_mask);
|
||||
|
||||
/* Wait for PLL READY bit to be reset */
|
||||
while(LL_RCC_PLL_IsReady() != 0U)
|
||||
{}
|
||||
|
||||
/* Reset HSEBYP bit */
|
||||
LL_RCC_HSE_DisableBypass();
|
||||
|
||||
/* Reset CFGR register */
|
||||
LL_RCC_WriteReg(CFGR, 0x00000000U);
|
||||
|
||||
#if defined(RCC_HSI48_SUPPORT)
|
||||
/* Reset CR2 register */
|
||||
LL_RCC_WriteReg(CR2, 0x00000000U);
|
||||
|
||||
/* Disable HSI48 */
|
||||
LL_RCC_HSI48_Disable();
|
||||
|
||||
#endif /*RCC_HSI48_SUPPORT*/
|
||||
/* Set HSI14TRIM/HSI14ON/HSI14DIS bits to the reset value*/
|
||||
LL_RCC_HSI14_SetCalibTrimming(0x10U);
|
||||
LL_RCC_HSI14_Disable();
|
||||
LL_RCC_HSI14_EnableADCControl();
|
||||
|
||||
/* Reset CFGR2 register */
|
||||
LL_RCC_WriteReg(CFGR2, 0x00000000U);
|
||||
|
||||
/* Reset CFGR3 register */
|
||||
LL_RCC_WriteReg(CFGR3, 0x00000000U);
|
||||
|
||||
/* Clear pending flags */
|
||||
#if defined(RCC_HSI48_SUPPORT)
|
||||
vl_mask = (LL_RCC_CIR_LSIRDYC | LL_RCC_CIR_LSERDYC | LL_RCC_CIR_HSIRDYC | LL_RCC_CIR_HSERDYC |\
|
||||
LL_RCC_CIR_PLLRDYC | LL_RCC_CIR_HSI14RDYC | LL_RCC_CIR_HSI48RDYC | LL_RCC_CIR_CSSC);
|
||||
#else
|
||||
vl_mask = (LL_RCC_CIR_LSIRDYC | LL_RCC_CIR_LSERDYC | LL_RCC_CIR_HSIRDYC | LL_RCC_CIR_HSERDYC |\
|
||||
LL_RCC_CIR_PLLRDYC | LL_RCC_CIR_HSI14RDYC | LL_RCC_CIR_CSSC);
|
||||
#endif /* RCC_HSI48_SUPPORT */
|
||||
|
||||
/* Write new value in CIR register */
|
||||
LL_RCC_WriteReg(CIR, vl_mask);
|
||||
|
||||
/* Disable all interrupts */
|
||||
LL_RCC_WriteReg(CIR, 0x00000000U);
|
||||
|
||||
/* Clear reset flags */
|
||||
LL_RCC_ClearResetFlags();
|
||||
|
||||
return SUCCESS;
|
||||
}
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup RCC_LL_EF_Get_Freq
|
||||
* @brief Return the frequencies of different on chip clocks; System, AHB and APB1 buses clocks
|
||||
* and different peripheral clocks available on the device.
|
||||
* @note If SYSCLK source is HSI, function returns values based on HSI_VALUE(**)
|
||||
* @note If SYSCLK source is HSE, function returns values based on HSE_VALUE(***)
|
||||
* @note If SYSCLK source is PLL, function returns values based on
|
||||
* HSI_VALUE(**) or HSE_VALUE(***) multiplied/divided by the PLL factors.
|
||||
* @note (**) HSI_VALUE is a defined constant but the real value may vary
|
||||
* depending on the variations in voltage and temperature.
|
||||
* @note (***) HSE_VALUE is a defined constant, user has to ensure that
|
||||
* HSE_VALUE is same as the real frequency of the crystal used.
|
||||
* Otherwise, this function may have wrong result.
|
||||
* @note The result of this function could be incorrect when using fractional
|
||||
* value for HSE crystal.
|
||||
* @note This function can be used by the user application to compute the
|
||||
* baud-rate for the communication peripherals or configure other parameters.
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @brief Return the frequencies of different on chip clocks; System, AHB and APB1 buses clocks
|
||||
* @note Each time SYSCLK, HCLK and/or PCLK1 clock changes, this function
|
||||
* must be called to update structure fields. Otherwise, any
|
||||
* configuration based on this function will be incorrect.
|
||||
* @param RCC_Clocks pointer to a @ref LL_RCC_ClocksTypeDef structure which will hold the clocks frequencies
|
||||
* @retval None
|
||||
*/
|
||||
void LL_RCC_GetSystemClocksFreq(LL_RCC_ClocksTypeDef *RCC_Clocks)
|
||||
{
|
||||
/* Get SYSCLK frequency */
|
||||
RCC_Clocks->SYSCLK_Frequency = RCC_GetSystemClockFreq();
|
||||
|
||||
/* HCLK clock frequency */
|
||||
RCC_Clocks->HCLK_Frequency = RCC_GetHCLKClockFreq(RCC_Clocks->SYSCLK_Frequency);
|
||||
|
||||
/* PCLK1 clock frequency */
|
||||
RCC_Clocks->PCLK1_Frequency = RCC_GetPCLK1ClockFreq(RCC_Clocks->HCLK_Frequency);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Return USARTx clock frequency
|
||||
* @param USARTxSource This parameter can be one of the following values:
|
||||
* @arg @ref LL_RCC_USART1_CLKSOURCE
|
||||
* @arg @ref LL_RCC_USART2_CLKSOURCE (*)
|
||||
* @arg @ref LL_RCC_USART3_CLKSOURCE (*)
|
||||
*
|
||||
* (*) value not defined in all devices.
|
||||
* @retval USART clock frequency (in Hz)
|
||||
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI or LSE) is not ready
|
||||
*/
|
||||
uint32_t LL_RCC_GetUSARTClockFreq(uint32_t USARTxSource)
|
||||
{
|
||||
uint32_t usart_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
|
||||
|
||||
/* Check parameter */
|
||||
assert_param(IS_LL_RCC_USART_CLKSOURCE(USARTxSource));
|
||||
#if defined(RCC_CFGR3_USART1SW)
|
||||
if (USARTxSource == LL_RCC_USART1_CLKSOURCE)
|
||||
{
|
||||
/* USART1CLK clock frequency */
|
||||
switch (LL_RCC_GetUSARTClockSource(USARTxSource))
|
||||
{
|
||||
case LL_RCC_USART1_CLKSOURCE_SYSCLK: /* USART1 Clock is System Clock */
|
||||
usart_frequency = RCC_GetSystemClockFreq();
|
||||
break;
|
||||
|
||||
case LL_RCC_USART1_CLKSOURCE_HSI: /* USART1 Clock is HSI Osc. */
|
||||
if (LL_RCC_HSI_IsReady())
|
||||
{
|
||||
usart_frequency = HSI_VALUE;
|
||||
}
|
||||
break;
|
||||
|
||||
case LL_RCC_USART1_CLKSOURCE_LSE: /* USART1 Clock is LSE Osc. */
|
||||
if (LL_RCC_LSE_IsReady())
|
||||
{
|
||||
usart_frequency = LSE_VALUE;
|
||||
}
|
||||
break;
|
||||
|
||||
case LL_RCC_USART1_CLKSOURCE_PCLK1: /* USART1 Clock is PCLK1 */
|
||||
default:
|
||||
usart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
||||
break;
|
||||
}
|
||||
}
|
||||
#endif /* RCC_CFGR3_USART1SW */
|
||||
|
||||
#if defined(RCC_CFGR3_USART2SW)
|
||||
if (USARTxSource == LL_RCC_USART2_CLKSOURCE)
|
||||
{
|
||||
/* USART2CLK clock frequency */
|
||||
switch (LL_RCC_GetUSARTClockSource(USARTxSource))
|
||||
{
|
||||
case LL_RCC_USART2_CLKSOURCE_SYSCLK: /* USART2 Clock is System Clock */
|
||||
usart_frequency = RCC_GetSystemClockFreq();
|
||||
break;
|
||||
|
||||
case LL_RCC_USART2_CLKSOURCE_HSI: /* USART2 Clock is HSI Osc. */
|
||||
if (LL_RCC_HSI_IsReady())
|
||||
{
|
||||
usart_frequency = HSI_VALUE;
|
||||
}
|
||||
break;
|
||||
|
||||
case LL_RCC_USART2_CLKSOURCE_LSE: /* USART2 Clock is LSE Osc. */
|
||||
if (LL_RCC_LSE_IsReady())
|
||||
{
|
||||
usart_frequency = LSE_VALUE;
|
||||
}
|
||||
break;
|
||||
|
||||
case LL_RCC_USART2_CLKSOURCE_PCLK1: /* USART2 Clock is PCLK1 */
|
||||
default:
|
||||
usart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
||||
break;
|
||||
}
|
||||
}
|
||||
#endif /* RCC_CFGR3_USART2SW */
|
||||
|
||||
#if defined(RCC_CFGR3_USART3SW)
|
||||
if (USARTxSource == LL_RCC_USART3_CLKSOURCE)
|
||||
{
|
||||
/* USART3CLK clock frequency */
|
||||
switch (LL_RCC_GetUSARTClockSource(USARTxSource))
|
||||
{
|
||||
case LL_RCC_USART3_CLKSOURCE_SYSCLK: /* USART3 Clock is System Clock */
|
||||
usart_frequency = RCC_GetSystemClockFreq();
|
||||
break;
|
||||
|
||||
case LL_RCC_USART3_CLKSOURCE_HSI: /* USART3 Clock is HSI Osc. */
|
||||
if (LL_RCC_HSI_IsReady())
|
||||
{
|
||||
usart_frequency = HSI_VALUE;
|
||||
}
|
||||
break;
|
||||
|
||||
case LL_RCC_USART3_CLKSOURCE_LSE: /* USART3 Clock is LSE Osc. */
|
||||
if (LL_RCC_LSE_IsReady())
|
||||
{
|
||||
usart_frequency = LSE_VALUE;
|
||||
}
|
||||
break;
|
||||
|
||||
case LL_RCC_USART3_CLKSOURCE_PCLK1: /* USART3 Clock is PCLK1 */
|
||||
default:
|
||||
usart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* RCC_CFGR3_USART3SW */
|
||||
return usart_frequency;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Return I2Cx clock frequency
|
||||
* @param I2CxSource This parameter can be one of the following values:
|
||||
* @arg @ref LL_RCC_I2C1_CLKSOURCE
|
||||
* @retval I2C clock frequency (in Hz)
|
||||
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that HSI oscillator is not ready
|
||||
*/
|
||||
uint32_t LL_RCC_GetI2CClockFreq(uint32_t I2CxSource)
|
||||
{
|
||||
uint32_t i2c_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
|
||||
|
||||
/* Check parameter */
|
||||
assert_param(IS_LL_RCC_I2C_CLKSOURCE(I2CxSource));
|
||||
|
||||
/* I2C1 CLK clock frequency */
|
||||
if (I2CxSource == LL_RCC_I2C1_CLKSOURCE)
|
||||
{
|
||||
switch (LL_RCC_GetI2CClockSource(I2CxSource))
|
||||
{
|
||||
case LL_RCC_I2C1_CLKSOURCE_SYSCLK: /* I2C1 Clock is System Clock */
|
||||
i2c_frequency = RCC_GetSystemClockFreq();
|
||||
break;
|
||||
|
||||
case LL_RCC_I2C1_CLKSOURCE_HSI: /* I2C1 Clock is HSI Osc. */
|
||||
default:
|
||||
if (LL_RCC_HSI_IsReady())
|
||||
{
|
||||
i2c_frequency = HSI_VALUE;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return i2c_frequency;
|
||||
}
|
||||
|
||||
#if defined(USB)
|
||||
/**
|
||||
* @brief Return USBx clock frequency
|
||||
* @param USBxSource This parameter can be one of the following values:
|
||||
* @arg @ref LL_RCC_USB_CLKSOURCE
|
||||
* @retval USB clock frequency (in Hz)
|
||||
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI48) or PLL is not ready
|
||||
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NA indicates that no clock source selected
|
||||
*/
|
||||
uint32_t LL_RCC_GetUSBClockFreq(uint32_t USBxSource)
|
||||
{
|
||||
uint32_t usb_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
|
||||
|
||||
/* Check parameter */
|
||||
assert_param(IS_LL_RCC_USB_CLKSOURCE(USBxSource));
|
||||
|
||||
/* USBCLK clock frequency */
|
||||
switch (LL_RCC_GetUSBClockSource(USBxSource))
|
||||
{
|
||||
case LL_RCC_USB_CLKSOURCE_PLL: /* PLL clock used as USB clock source */
|
||||
if (LL_RCC_PLL_IsReady())
|
||||
{
|
||||
usb_frequency = RCC_PLL_GetFreqDomain_SYS();
|
||||
}
|
||||
break;
|
||||
|
||||
#if defined(RCC_CFGR3_USBSW_HSI48)
|
||||
case LL_RCC_USB_CLKSOURCE_HSI48: /* HSI48 clock used as USB clock source */
|
||||
default:
|
||||
if (LL_RCC_HSI48_IsReady())
|
||||
{
|
||||
usb_frequency = HSI48_VALUE;
|
||||
}
|
||||
break;
|
||||
#else
|
||||
case LL_RCC_USB_CLKSOURCE_NONE: /* No clock used as USB clock source */
|
||||
default:
|
||||
usb_frequency = LL_RCC_PERIPH_FREQUENCY_NA;
|
||||
break;
|
||||
#endif /* RCC_CFGR3_USBSW_HSI48 */
|
||||
}
|
||||
|
||||
return usb_frequency;
|
||||
}
|
||||
#endif /* USB */
|
||||
|
||||
#if defined(CEC)
|
||||
/**
|
||||
* @brief Return CECx clock frequency
|
||||
* @param CECxSource This parameter can be one of the following values:
|
||||
* @arg @ref LL_RCC_CEC_CLKSOURCE
|
||||
* @retval CEC clock frequency (in Hz)
|
||||
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillators (HSI or LSE) are not ready
|
||||
*/
|
||||
uint32_t LL_RCC_GetCECClockFreq(uint32_t CECxSource)
|
||||
{
|
||||
uint32_t cec_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
|
||||
|
||||
/* Check parameter */
|
||||
assert_param(IS_LL_RCC_CEC_CLKSOURCE(CECxSource));
|
||||
|
||||
/* CECCLK clock frequency */
|
||||
switch (LL_RCC_GetCECClockSource(CECxSource))
|
||||
{
|
||||
case LL_RCC_CEC_CLKSOURCE_HSI_DIV244: /* HSI / 244 clock used as CEC clock source */
|
||||
if (LL_RCC_HSI_IsReady())
|
||||
{
|
||||
cec_frequency = HSI_VALUE / 244U;
|
||||
}
|
||||
break;
|
||||
|
||||
case LL_RCC_CEC_CLKSOURCE_LSE: /* LSE clock used as CEC clock source */
|
||||
default:
|
||||
if (LL_RCC_LSE_IsReady())
|
||||
{
|
||||
cec_frequency = LSE_VALUE;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
return cec_frequency;
|
||||
}
|
||||
#endif /* CEC */
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup RCC_LL_Private_Functions
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @brief Return SYSTEM clock frequency
|
||||
* @retval SYSTEM clock frequency (in Hz)
|
||||
*/
|
||||
uint32_t RCC_GetSystemClockFreq(void)
|
||||
{
|
||||
uint32_t frequency = 0U;
|
||||
|
||||
/* Get SYSCLK source -------------------------------------------------------*/
|
||||
switch (LL_RCC_GetSysClkSource())
|
||||
{
|
||||
case LL_RCC_SYS_CLKSOURCE_STATUS_HSI: /* HSI used as system clock source */
|
||||
frequency = HSI_VALUE;
|
||||
break;
|
||||
|
||||
case LL_RCC_SYS_CLKSOURCE_STATUS_HSE: /* HSE used as system clock source */
|
||||
frequency = HSE_VALUE;
|
||||
break;
|
||||
|
||||
case LL_RCC_SYS_CLKSOURCE_STATUS_PLL: /* PLL used as system clock source */
|
||||
frequency = RCC_PLL_GetFreqDomain_SYS();
|
||||
break;
|
||||
|
||||
#if defined(RCC_HSI48_SUPPORT)
|
||||
case LL_RCC_SYS_CLKSOURCE_STATUS_HSI48:/* HSI48 used as system clock source */
|
||||
frequency = HSI48_VALUE;
|
||||
break;
|
||||
#endif /* RCC_HSI48_SUPPORT */
|
||||
|
||||
default:
|
||||
frequency = HSI_VALUE;
|
||||
break;
|
||||
}
|
||||
|
||||
return frequency;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Return HCLK clock frequency
|
||||
* @param SYSCLK_Frequency SYSCLK clock frequency
|
||||
* @retval HCLK clock frequency (in Hz)
|
||||
*/
|
||||
uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency)
|
||||
{
|
||||
/* HCLK clock frequency */
|
||||
return __LL_RCC_CALC_HCLK_FREQ(SYSCLK_Frequency, LL_RCC_GetAHBPrescaler());
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Return PCLK1 clock frequency
|
||||
* @param HCLK_Frequency HCLK clock frequency
|
||||
* @retval PCLK1 clock frequency (in Hz)
|
||||
*/
|
||||
uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency)
|
||||
{
|
||||
/* PCLK1 clock frequency */
|
||||
return __LL_RCC_CALC_PCLK1_FREQ(HCLK_Frequency, LL_RCC_GetAPB1Prescaler());
|
||||
}
|
||||
/**
|
||||
* @brief Return PLL clock frequency used for system domain
|
||||
* @retval PLL clock frequency (in Hz)
|
||||
*/
|
||||
uint32_t RCC_PLL_GetFreqDomain_SYS(void)
|
||||
{
|
||||
uint32_t pllinputfreq = 0U, pllsource = 0U;
|
||||
|
||||
/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL divider) * PLL Multiplicator */
|
||||
|
||||
/* Get PLL source */
|
||||
pllsource = LL_RCC_PLL_GetMainSource();
|
||||
|
||||
switch (pllsource)
|
||||
{
|
||||
#if defined(RCC_PLLSRC_PREDIV1_SUPPORT)
|
||||
case LL_RCC_PLLSOURCE_HSI: /* HSI used as PLL clock source */
|
||||
pllinputfreq = HSI_VALUE;
|
||||
#else
|
||||
case LL_RCC_PLLSOURCE_HSI_DIV_2: /* HSI used as PLL clock source */
|
||||
pllinputfreq = HSI_VALUE / 2U;
|
||||
#endif /* RCC_PLLSRC_PREDIV1_SUPPORT */
|
||||
break;
|
||||
|
||||
#if defined(RCC_HSI48_SUPPORT)
|
||||
case LL_RCC_PLLSOURCE_HSI48: /* HSI48 used as PLL clock source */
|
||||
pllinputfreq = HSI48_VALUE;
|
||||
break;
|
||||
#endif /* RCC_HSI48_SUPPORT */
|
||||
|
||||
case LL_RCC_PLLSOURCE_HSE: /* HSE used as PLL clock source */
|
||||
pllinputfreq = HSE_VALUE;
|
||||
break;
|
||||
|
||||
default:
|
||||
#if defined(RCC_PLLSRC_PREDIV1_SUPPORT)
|
||||
pllinputfreq = HSI_VALUE;
|
||||
#else
|
||||
pllinputfreq = HSI_VALUE / 2U;
|
||||
#endif /* RCC_PLLSRC_PREDIV1_SUPPORT */
|
||||
break;
|
||||
}
|
||||
#if defined(RCC_PLLSRC_PREDIV1_SUPPORT)
|
||||
return __LL_RCC_CALC_PLLCLK_FREQ(pllinputfreq, LL_RCC_PLL_GetMultiplicator(), LL_RCC_PLL_GetPrediv());
|
||||
#else
|
||||
return __LL_RCC_CALC_PLLCLK_FREQ((pllinputfreq / (LL_RCC_PLL_GetPrediv() + 1U)), LL_RCC_PLL_GetMultiplicator());
|
||||
#endif /* RCC_PLLSRC_PREDIV1_SUPPORT */
|
||||
}
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
#endif /* defined(RCC) */
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
#endif /* USE_FULL_LL_DRIVER */
|
||||
|
||||
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
||||
|
|
@ -0,0 +1,622 @@
|
|||
/**
|
||||
******************************************************************************
|
||||
* @file stm32f0xx_ll_utils.c
|
||||
* @author MCD Application Team
|
||||
* @brief UTILS LL module driver.
|
||||
******************************************************************************
|
||||
* @attention
|
||||
*
|
||||
* <h2><center>© Copyright (c) 2016 STMicroelectronics.
|
||||
* All rights reserved.</center></h2>
|
||||
*
|
||||
* This software component is licensed by ST under BSD 3-Clause license,
|
||||
* the "License"; You may not use this file except in compliance with the
|
||||
* License. You may obtain a copy of the License at:
|
||||
* opensource.org/licenses/BSD-3-Clause
|
||||
*
|
||||
******************************************************************************
|
||||
*/
|
||||
|
||||
/* Includes ------------------------------------------------------------------*/
|
||||
#include "stm32f0xx_ll_rcc.h"
|
||||
#include "stm32f0xx_ll_utils.h"
|
||||
#include "stm32f0xx_ll_system.h"
|
||||
#ifdef USE_FULL_ASSERT
|
||||
#include "stm32_assert.h"
|
||||
#else
|
||||
#define assert_param(expr) ((void)0U)
|
||||
#endif
|
||||
|
||||
/** @addtogroup STM32F0xx_LL_Driver
|
||||
* @{
|
||||
*/
|
||||
|
||||
/** @addtogroup UTILS_LL
|
||||
* @{
|
||||
*/
|
||||
|
||||
/* Private types -------------------------------------------------------------*/
|
||||
/* Private variables ---------------------------------------------------------*/
|
||||
/* Private constants ---------------------------------------------------------*/
|
||||
/** @addtogroup UTILS_LL_Private_Constants
|
||||
* @{
|
||||
*/
|
||||
|
||||
/* Defines used for PLL range */
|
||||
#define UTILS_PLL_OUTPUT_MIN 16000000U /*!< Frequency min for PLL output, in Hz */
|
||||
#define UTILS_PLL_OUTPUT_MAX 48000000U /*!< Frequency max for PLL output, in Hz */
|
||||
|
||||
/* Defines used for HSE range */
|
||||
#define UTILS_HSE_FREQUENCY_MIN 4000000U /*!< Frequency min for HSE frequency, in Hz */
|
||||
#define UTILS_HSE_FREQUENCY_MAX 32000000U /*!< Frequency max for HSE frequency, in Hz */
|
||||
|
||||
/* Defines used for FLASH latency according to SYSCLK Frequency */
|
||||
#define UTILS_LATENCY1_FREQ 24000000U /*!< SYSCLK frequency to set FLASH latency 1 */
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
/* Private macros ------------------------------------------------------------*/
|
||||
/** @addtogroup UTILS_LL_Private_Macros
|
||||
* @{
|
||||
*/
|
||||
#define IS_LL_UTILS_SYSCLK_DIV(__VALUE__) (((__VALUE__) == LL_RCC_SYSCLK_DIV_1) \
|
||||
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_2) \
|
||||
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_4) \
|
||||
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_8) \
|
||||
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_16) \
|
||||
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_64) \
|
||||
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_128) \
|
||||
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_256) \
|
||||
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_512))
|
||||
|
||||
#define IS_LL_UTILS_APB1_DIV(__VALUE__) (((__VALUE__) == LL_RCC_APB1_DIV_1) \
|
||||
|| ((__VALUE__) == LL_RCC_APB1_DIV_2) \
|
||||
|| ((__VALUE__) == LL_RCC_APB1_DIV_4) \
|
||||
|| ((__VALUE__) == LL_RCC_APB1_DIV_8) \
|
||||
|| ((__VALUE__) == LL_RCC_APB1_DIV_16))
|
||||
|
||||
#define IS_LL_UTILS_PLLMUL_VALUE(__VALUE__) (((__VALUE__) == LL_RCC_PLL_MUL_2) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_3) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_4) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_5) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_6) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_7) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_8) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_9) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_10) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_11) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_12) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_13) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_14) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_15) \
|
||||
|| ((__VALUE__) == LL_RCC_PLL_MUL_16))
|
||||
|
||||
#define IS_LL_UTILS_PREDIV_VALUE(__VALUE__) (((__VALUE__) == LL_RCC_PREDIV_DIV_1) || ((__VALUE__) == LL_RCC_PREDIV_DIV_2) || \
|
||||
((__VALUE__) == LL_RCC_PREDIV_DIV_3) || ((__VALUE__) == LL_RCC_PREDIV_DIV_4) || \
|
||||
((__VALUE__) == LL_RCC_PREDIV_DIV_5) || ((__VALUE__) == LL_RCC_PREDIV_DIV_6) || \
|
||||
((__VALUE__) == LL_RCC_PREDIV_DIV_7) || ((__VALUE__) == LL_RCC_PREDIV_DIV_8) || \
|
||||
((__VALUE__) == LL_RCC_PREDIV_DIV_9) || ((__VALUE__) == LL_RCC_PREDIV_DIV_10) || \
|
||||
((__VALUE__) == LL_RCC_PREDIV_DIV_11) || ((__VALUE__) == LL_RCC_PREDIV_DIV_12) || \
|
||||
((__VALUE__) == LL_RCC_PREDIV_DIV_13) || ((__VALUE__) == LL_RCC_PREDIV_DIV_14) || \
|
||||
((__VALUE__) == LL_RCC_PREDIV_DIV_15) || ((__VALUE__) == LL_RCC_PREDIV_DIV_16))
|
||||
|
||||
#define IS_LL_UTILS_PLL_FREQUENCY(__VALUE__) ((UTILS_PLL_OUTPUT_MIN <= (__VALUE__)) && ((__VALUE__) <= UTILS_PLL_OUTPUT_MAX))
|
||||
|
||||
|
||||
#define IS_LL_UTILS_HSE_BYPASS(__STATE__) (((__STATE__) == LL_UTILS_HSEBYPASS_ON) \
|
||||
|| ((__STATE__) == LL_UTILS_HSEBYPASS_OFF))
|
||||
|
||||
#define IS_LL_UTILS_HSE_FREQUENCY(__FREQUENCY__) (((__FREQUENCY__) >= UTILS_HSE_FREQUENCY_MIN) && ((__FREQUENCY__) <= UTILS_HSE_FREQUENCY_MAX))
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
/* Private function prototypes -----------------------------------------------*/
|
||||
/** @defgroup UTILS_LL_Private_Functions UTILS Private functions
|
||||
* @{
|
||||
*/
|
||||
static uint32_t UTILS_GetPLLOutputFrequency(uint32_t PLL_InputFrequency,
|
||||
LL_UTILS_PLLInitTypeDef *UTILS_PLLInitStruct);
|
||||
static ErrorStatus UTILS_EnablePLLAndSwitchSystem(uint32_t SYSCLK_Frequency, LL_UTILS_ClkInitTypeDef *UTILS_ClkInitStruct);
|
||||
static ErrorStatus UTILS_PLL_IsBusy(void);
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/* Exported functions --------------------------------------------------------*/
|
||||
/** @addtogroup UTILS_LL_Exported_Functions
|
||||
* @{
|
||||
*/
|
||||
|
||||
/** @addtogroup UTILS_LL_EF_DELAY
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @brief This function configures the Cortex-M SysTick source to have 1ms time base.
|
||||
* @note When a RTOS is used, it is recommended to avoid changing the Systick
|
||||
* configuration by calling this function, for a delay use rather osDelay RTOS service.
|
||||
* @param HCLKFrequency HCLK frequency in Hz
|
||||
* @note HCLK frequency can be calculated thanks to RCC helper macro or function @ref LL_RCC_GetSystemClocksFreq
|
||||
* @retval None
|
||||
*/
|
||||
void LL_Init1msTick(uint32_t HCLKFrequency)
|
||||
{
|
||||
/* Use frequency provided in argument */
|
||||
LL_InitTick(HCLKFrequency, 1000U);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief This function provides accurate delay (in milliseconds) based
|
||||
* on SysTick counter flag
|
||||
* @note When a RTOS is used, it is recommended to avoid using blocking delay
|
||||
* and use rather osDelay service.
|
||||
* @note To respect 1ms timebase, user should call @ref LL_Init1msTick function which
|
||||
* will configure Systick to 1ms
|
||||
* @param Delay specifies the delay time length, in milliseconds.
|
||||
* @retval None
|
||||
*/
|
||||
void LL_mDelay(uint32_t Delay)
|
||||
{
|
||||
__IO uint32_t tmp = SysTick->CTRL; /* Clear the COUNTFLAG first */
|
||||
/* Add this code to indicate that local variable is not used */
|
||||
((void)tmp);
|
||||
|
||||
/* Add a period to guaranty minimum wait */
|
||||
if (Delay < LL_MAX_DELAY)
|
||||
{
|
||||
Delay++;
|
||||
}
|
||||
|
||||
while (Delay)
|
||||
{
|
||||
if ((SysTick->CTRL & SysTick_CTRL_COUNTFLAG_Msk) != 0U)
|
||||
{
|
||||
Delay--;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup UTILS_EF_SYSTEM
|
||||
* @brief System Configuration functions
|
||||
*
|
||||
@verbatim
|
||||
===============================================================================
|
||||
##### System Configuration functions #####
|
||||
===============================================================================
|
||||
[..]
|
||||
System, AHB and APB buses clocks configuration
|
||||
|
||||
(+) The maximum frequency of the SYSCLK, HCLK, PCLK1 and PCLK2 is 48000000 Hz.
|
||||
@endverbatim
|
||||
@internal
|
||||
Depending on the SYSCLK frequency, the flash latency should be adapted accordingly:
|
||||
(++) +-----------------------------------------------+
|
||||
(++) | Latency | SYSCLK clock frequency (MHz) |
|
||||
(++) |---------------|-------------------------------|
|
||||
(++) |0WS(1CPU cycle)| 0 < SYSCLK <= 24 |
|
||||
(++) |---------------|-------------------------------|
|
||||
(++) |1WS(2CPU cycle)| 24 < SYSCLK <= 48 |
|
||||
(++) +-----------------------------------------------+
|
||||
@endinternal
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @brief This function sets directly SystemCoreClock CMSIS variable.
|
||||
* @note Variable can be calculated also through SystemCoreClockUpdate function.
|
||||
* @param HCLKFrequency HCLK frequency in Hz (can be calculated thanks to RCC helper macro)
|
||||
* @retval None
|
||||
*/
|
||||
void LL_SetSystemCoreClock(uint32_t HCLKFrequency)
|
||||
{
|
||||
/* HCLK clock frequency */
|
||||
SystemCoreClock = HCLKFrequency;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Update number of Flash wait states in line with new frequency and current
|
||||
voltage range.
|
||||
* @param Frequency SYSCLK frequency
|
||||
* @retval An ErrorStatus enumeration value:
|
||||
* - SUCCESS: Latency has been modified
|
||||
* - ERROR: Latency cannot be modified
|
||||
*/
|
||||
#if defined(FLASH_ACR_LATENCY)
|
||||
ErrorStatus LL_SetFlashLatency(uint32_t Frequency)
|
||||
{
|
||||
uint32_t timeout;
|
||||
uint32_t getlatency;
|
||||
uint32_t latency;
|
||||
ErrorStatus status = SUCCESS;
|
||||
|
||||
/* Frequency cannot be equal to 0 */
|
||||
if (Frequency == 0U)
|
||||
{
|
||||
status = ERROR;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (Frequency > UTILS_LATENCY1_FREQ)
|
||||
{
|
||||
/* 24 < SYSCLK <= 48 => 1WS (2 CPU cycles) */
|
||||
latency = LL_FLASH_LATENCY_1;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* else SYSCLK < 24MHz default LL_FLASH_LATENCY_0 0WS */
|
||||
latency = LL_FLASH_LATENCY_0;
|
||||
}
|
||||
if (status != ERROR)
|
||||
{
|
||||
LL_FLASH_SetLatency(latency);
|
||||
|
||||
/* Check that the new number of wait states is taken into account to access the Flash
|
||||
memory by reading the FLASH_ACR register */
|
||||
timeout = 2;
|
||||
do
|
||||
{
|
||||
/* Wait for Flash latency to be updated */
|
||||
getlatency = LL_FLASH_GetLatency();
|
||||
timeout--;
|
||||
} while ((getlatency != latency) && (timeout > 0));
|
||||
|
||||
if(getlatency != latency)
|
||||
{
|
||||
status = ERROR;
|
||||
}
|
||||
else
|
||||
{
|
||||
status = SUCCESS;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
#endif /* FLASH_ACR_LATENCY */
|
||||
|
||||
/**
|
||||
* @brief This function configures system clock with HSI as clock source of the PLL
|
||||
* @note The application need to ensure that PLL is disabled.
|
||||
* @note Function is based on the following formula:
|
||||
* - PLL output frequency = ((HSI frequency / PREDIV) * PLLMUL)
|
||||
* - PREDIV: Set to 2 for few devices
|
||||
* - PLLMUL: The application software must set correctly the PLL multiplication factor to
|
||||
* be in the range 16-48MHz
|
||||
* @note FLASH latency can be modified through this function.
|
||||
* @param UTILS_PLLInitStruct pointer to a @ref LL_UTILS_PLLInitTypeDef structure that contains
|
||||
* the configuration information for the PLL.
|
||||
* @param UTILS_ClkInitStruct pointer to a @ref LL_UTILS_ClkInitTypeDef structure that contains
|
||||
* the configuration information for the BUS prescalers.
|
||||
* @retval An ErrorStatus enumeration value:
|
||||
* - SUCCESS: Max frequency configuration done
|
||||
* - ERROR: Max frequency configuration not done
|
||||
*/
|
||||
ErrorStatus LL_PLL_ConfigSystemClock_HSI(LL_UTILS_PLLInitTypeDef *UTILS_PLLInitStruct,
|
||||
LL_UTILS_ClkInitTypeDef *UTILS_ClkInitStruct)
|
||||
{
|
||||
ErrorStatus status = SUCCESS;
|
||||
uint32_t pllfreq = 0U;
|
||||
|
||||
/* Check if one of the PLL is enabled */
|
||||
if (UTILS_PLL_IsBusy() == SUCCESS)
|
||||
{
|
||||
#if defined(RCC_PLLSRC_PREDIV1_SUPPORT)
|
||||
/* Check PREDIV value */
|
||||
assert_param(IS_LL_UTILS_PREDIV_VALUE(UTILS_PLLInitStruct->PLLDiv));
|
||||
#else
|
||||
/* Force PREDIV value to 2 */
|
||||
UTILS_PLLInitStruct->Prediv = LL_RCC_PREDIV_DIV_2;
|
||||
#endif /*RCC_PLLSRC_PREDIV1_SUPPORT*/
|
||||
/* Calculate the new PLL output frequency */
|
||||
pllfreq = UTILS_GetPLLOutputFrequency(HSI_VALUE, UTILS_PLLInitStruct);
|
||||
|
||||
/* Enable HSI if not enabled */
|
||||
if (LL_RCC_HSI_IsReady() != 1U)
|
||||
{
|
||||
LL_RCC_HSI_Enable();
|
||||
while (LL_RCC_HSI_IsReady() != 1U)
|
||||
{
|
||||
/* Wait for HSI ready */
|
||||
}
|
||||
}
|
||||
|
||||
/* Configure PLL */
|
||||
#if defined(RCC_PLLSRC_PREDIV1_SUPPORT)
|
||||
LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSI, UTILS_PLLInitStruct->PLLMul, UTILS_PLLInitStruct->PLLDiv);
|
||||
#else
|
||||
LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSI_DIV_2, UTILS_PLLInitStruct->PLLMul);
|
||||
#endif /*RCC_PLLSRC_PREDIV1_SUPPORT*/
|
||||
|
||||
/* Enable PLL and switch system clock to PLL */
|
||||
status = UTILS_EnablePLLAndSwitchSystem(pllfreq, UTILS_ClkInitStruct);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Current PLL configuration cannot be modified */
|
||||
status = ERROR;
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
#if defined(RCC_CFGR_SW_HSI48)
|
||||
/**
|
||||
* @brief This function configures system clock with HSI48 as clock source of the PLL
|
||||
* @note The application need to ensure that PLL is disabled.
|
||||
* @note Function is based on the following formula:
|
||||
* - PLL output frequency = ((HSI48 frequency / PREDIV) * PLLMUL)
|
||||
* - PLLMUL: The application software must set correctly the PLL multiplication factor to
|
||||
* be in the range 16-48MHz
|
||||
* @param UTILS_PLLInitStruct pointer to a @ref LL_UTILS_PLLInitTypeDef structure that contains
|
||||
* the configuration information for the PLL.
|
||||
* @param UTILS_ClkInitStruct pointer to a @ref LL_UTILS_ClkInitTypeDef structure that contains
|
||||
* the configuration information for the BUS prescalers.
|
||||
* @retval An ErrorStatus enumeration value:
|
||||
* - SUCCESS: Max frequency configuration done
|
||||
* - ERROR: Max frequency configuration not done
|
||||
*/
|
||||
ErrorStatus LL_PLL_ConfigSystemClock_HSI48(LL_UTILS_PLLInitTypeDef *UTILS_PLLInitStruct,
|
||||
LL_UTILS_ClkInitTypeDef *UTILS_ClkInitStruct)
|
||||
{
|
||||
ErrorStatus status = SUCCESS;
|
||||
uint32_t pllfreq = 0U;
|
||||
|
||||
/* Check if one of the PLL is enabled */
|
||||
if (UTILS_PLL_IsBusy() == SUCCESS)
|
||||
{
|
||||
/* Check PREDIV value */
|
||||
assert_param(IS_LL_UTILS_PREDIV_VALUE(UTILS_PLLInitStruct->PLLDiv));
|
||||
|
||||
/* Calculate the new PLL output frequency */
|
||||
pllfreq = UTILS_GetPLLOutputFrequency(HSI48_VALUE, UTILS_PLLInitStruct);
|
||||
|
||||
/* Enable HSI48 if not enabled */
|
||||
if (LL_RCC_HSI48_IsReady() != 1U)
|
||||
{
|
||||
LL_RCC_HSI48_Enable();
|
||||
while (LL_RCC_HSI48_IsReady() != 1U)
|
||||
{
|
||||
/* Wait for HSI48 ready */
|
||||
}
|
||||
}
|
||||
|
||||
/* Configure PLL */
|
||||
LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSI48, UTILS_PLLInitStruct->PLLMul, UTILS_PLLInitStruct->PLLDiv);
|
||||
|
||||
/* Enable PLL and switch system clock to PLL */
|
||||
status = UTILS_EnablePLLAndSwitchSystem(pllfreq, UTILS_ClkInitStruct);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Current PLL configuration cannot be modified */
|
||||
status = ERROR;
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
#endif /*RCC_CFGR_SW_HSI48*/
|
||||
/**
|
||||
* @brief This function configures system clock with HSE as clock source of the PLL
|
||||
* @note The application need to ensure that PLL is disabled.
|
||||
* @note Function is based on the following formula:
|
||||
* - PLL output frequency = ((HSE frequency / PREDIV) * PLLMUL)
|
||||
* - PLLMUL: The application software must set correctly the PLL multiplication factor to
|
||||
* be in the range 16-48MHz
|
||||
* @note FLASH latency can be modified through this function.
|
||||
* @param HSEFrequency Value between Min_Data = 4000000 and Max_Data = 32000000
|
||||
* @param HSEBypass This parameter can be one of the following values:
|
||||
* @arg @ref LL_UTILS_HSEBYPASS_ON
|
||||
* @arg @ref LL_UTILS_HSEBYPASS_OFF
|
||||
* @param UTILS_PLLInitStruct pointer to a @ref LL_UTILS_PLLInitTypeDef structure that contains
|
||||
* the configuration information for the PLL.
|
||||
* @param UTILS_ClkInitStruct pointer to a @ref LL_UTILS_ClkInitTypeDef structure that contains
|
||||
* the configuration information for the BUS prescalers.
|
||||
* @retval An ErrorStatus enumeration value:
|
||||
* - SUCCESS: Max frequency configuration done
|
||||
* - ERROR: Max frequency configuration not done
|
||||
*/
|
||||
ErrorStatus LL_PLL_ConfigSystemClock_HSE(uint32_t HSEFrequency, uint32_t HSEBypass,
|
||||
LL_UTILS_PLLInitTypeDef *UTILS_PLLInitStruct, LL_UTILS_ClkInitTypeDef *UTILS_ClkInitStruct)
|
||||
{
|
||||
ErrorStatus status = SUCCESS;
|
||||
uint32_t pllfreq = 0U;
|
||||
|
||||
/* Check the parameters */
|
||||
assert_param(IS_LL_UTILS_HSE_FREQUENCY(HSEFrequency));
|
||||
assert_param(IS_LL_UTILS_HSE_BYPASS(HSEBypass));
|
||||
|
||||
/* Check if one of the PLL is enabled */
|
||||
if (UTILS_PLL_IsBusy() == SUCCESS)
|
||||
{
|
||||
/* Check PREDIV value */
|
||||
#if defined(RCC_PLLSRC_PREDIV1_SUPPORT)
|
||||
assert_param(IS_LL_UTILS_PREDIV_VALUE(UTILS_PLLInitStruct->PLLDiv));
|
||||
#else
|
||||
assert_param(IS_LL_UTILS_PREDIV_VALUE(UTILS_PLLInitStruct->Prediv));
|
||||
#endif /*RCC_PLLSRC_PREDIV1_SUPPORT*/
|
||||
|
||||
/* Calculate the new PLL output frequency */
|
||||
pllfreq = UTILS_GetPLLOutputFrequency(HSEFrequency, UTILS_PLLInitStruct);
|
||||
|
||||
/* Enable HSE if not enabled */
|
||||
if (LL_RCC_HSE_IsReady() != 1U)
|
||||
{
|
||||
/* Check if need to enable HSE bypass feature or not */
|
||||
if (HSEBypass == LL_UTILS_HSEBYPASS_ON)
|
||||
{
|
||||
LL_RCC_HSE_EnableBypass();
|
||||
}
|
||||
else
|
||||
{
|
||||
LL_RCC_HSE_DisableBypass();
|
||||
}
|
||||
|
||||
/* Enable HSE */
|
||||
LL_RCC_HSE_Enable();
|
||||
while (LL_RCC_HSE_IsReady() != 1U)
|
||||
{
|
||||
/* Wait for HSE ready */
|
||||
}
|
||||
}
|
||||
|
||||
/* Configure PLL */
|
||||
#if defined(RCC_PLLSRC_PREDIV1_SUPPORT)
|
||||
LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSE, UTILS_PLLInitStruct->PLLMul, UTILS_PLLInitStruct->PLLDiv);
|
||||
#else
|
||||
LL_RCC_PLL_ConfigDomain_SYS((RCC_CFGR_PLLSRC_HSE_PREDIV | UTILS_PLLInitStruct->Prediv), UTILS_PLLInitStruct->PLLMul);
|
||||
#endif /*RCC_PLLSRC_PREDIV1_SUPPORT*/
|
||||
|
||||
/* Enable PLL and switch system clock to PLL */
|
||||
status = UTILS_EnablePLLAndSwitchSystem(pllfreq, UTILS_ClkInitStruct);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Current PLL configuration cannot be modified */
|
||||
status = ERROR;
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/** @addtogroup UTILS_LL_Private_Functions
|
||||
* @{
|
||||
*/
|
||||
/**
|
||||
* @brief Function to check that PLL can be modified
|
||||
* @param PLL_InputFrequency PLL input frequency (in Hz)
|
||||
* @param UTILS_PLLInitStruct pointer to a @ref LL_UTILS_PLLInitTypeDef structure that contains
|
||||
* the configuration information for the PLL.
|
||||
* @retval PLL output frequency (in Hz)
|
||||
*/
|
||||
static uint32_t UTILS_GetPLLOutputFrequency(uint32_t PLL_InputFrequency, LL_UTILS_PLLInitTypeDef *UTILS_PLLInitStruct)
|
||||
{
|
||||
uint32_t pllfreq = 0U;
|
||||
|
||||
/* Check the parameters */
|
||||
assert_param(IS_LL_UTILS_PLLMUL_VALUE(UTILS_PLLInitStruct->PLLMul));
|
||||
|
||||
/* Check different PLL parameters according to RM */
|
||||
/* The application software must set correctly the PLL multiplication factor to
|
||||
be in the range 16-48MHz */
|
||||
#if defined(RCC_PLLSRC_PREDIV1_SUPPORT)
|
||||
pllfreq = __LL_RCC_CALC_PLLCLK_FREQ(PLL_InputFrequency, UTILS_PLLInitStruct->PLLMul, UTILS_PLLInitStruct->PLLDiv);
|
||||
#else
|
||||
pllfreq = __LL_RCC_CALC_PLLCLK_FREQ(PLL_InputFrequency / (UTILS_PLLInitStruct->Prediv + 1U), UTILS_PLLInitStruct->PLLMul);
|
||||
#endif /*RCC_PLLSRC_PREDIV1_SUPPORT*/
|
||||
assert_param(IS_LL_UTILS_PLL_FREQUENCY(pllfreq));
|
||||
|
||||
return pllfreq;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Function to check that PLL can be modified
|
||||
* @retval An ErrorStatus enumeration value:
|
||||
* - SUCCESS: PLL modification can be done
|
||||
* - ERROR: PLL is busy
|
||||
*/
|
||||
static ErrorStatus UTILS_PLL_IsBusy(void)
|
||||
{
|
||||
ErrorStatus status = SUCCESS;
|
||||
|
||||
/* Check if PLL is busy*/
|
||||
if (LL_RCC_PLL_IsReady() != 0U)
|
||||
{
|
||||
/* PLL configuration cannot be modified */
|
||||
status = ERROR;
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Function to enable PLL and switch system clock to PLL
|
||||
* @param SYSCLK_Frequency SYSCLK frequency
|
||||
* @param UTILS_ClkInitStruct pointer to a @ref LL_UTILS_ClkInitTypeDef structure that contains
|
||||
* the configuration information for the BUS prescalers.
|
||||
* @retval An ErrorStatus enumeration value:
|
||||
* - SUCCESS: No problem to switch system to PLL
|
||||
* - ERROR: Problem to switch system to PLL
|
||||
*/
|
||||
static ErrorStatus UTILS_EnablePLLAndSwitchSystem(uint32_t SYSCLK_Frequency, LL_UTILS_ClkInitTypeDef *UTILS_ClkInitStruct)
|
||||
{
|
||||
ErrorStatus status = SUCCESS;
|
||||
uint32_t sysclk_frequency_current = 0U;
|
||||
|
||||
assert_param(IS_LL_UTILS_SYSCLK_DIV(UTILS_ClkInitStruct->AHBCLKDivider));
|
||||
assert_param(IS_LL_UTILS_APB1_DIV(UTILS_ClkInitStruct->APB1CLKDivider));
|
||||
|
||||
/* Calculate current SYSCLK frequency */
|
||||
sysclk_frequency_current = (SystemCoreClock << AHBPrescTable[LL_RCC_GetAHBPrescaler() >> RCC_POSITION_HPRE]);
|
||||
|
||||
/* Increasing the number of wait states because of higher CPU frequency */
|
||||
if (sysclk_frequency_current < SYSCLK_Frequency)
|
||||
{
|
||||
/* Set FLASH latency to highest latency */
|
||||
status = LL_SetFlashLatency(SYSCLK_Frequency);
|
||||
}
|
||||
|
||||
/* Update system clock configuration */
|
||||
if (status == SUCCESS)
|
||||
{
|
||||
/* Enable PLL */
|
||||
LL_RCC_PLL_Enable();
|
||||
while (LL_RCC_PLL_IsReady() != 1U)
|
||||
{
|
||||
/* Wait for PLL ready */
|
||||
}
|
||||
|
||||
/* Sysclk activation on the main PLL */
|
||||
LL_RCC_SetAHBPrescaler(UTILS_ClkInitStruct->AHBCLKDivider);
|
||||
LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
|
||||
while (LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL)
|
||||
{
|
||||
/* Wait for system clock switch to PLL */
|
||||
}
|
||||
|
||||
/* Set APB1 & APB2 prescaler*/
|
||||
LL_RCC_SetAPB1Prescaler(UTILS_ClkInitStruct->APB1CLKDivider);
|
||||
}
|
||||
|
||||
/* Decreasing the number of wait states because of lower CPU frequency */
|
||||
if (sysclk_frequency_current > SYSCLK_Frequency)
|
||||
{
|
||||
/* Set FLASH latency to lowest latency */
|
||||
status = LL_SetFlashLatency(SYSCLK_Frequency);
|
||||
}
|
||||
|
||||
/* Update SystemCoreClock variable */
|
||||
if (status == SUCCESS)
|
||||
{
|
||||
LL_SetSystemCoreClock(__LL_RCC_CALC_HCLK_FREQ(SYSCLK_Frequency, UTILS_ClkInitStruct->AHBCLKDivider));
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
||||
Loading…
Add table
Add a link
Reference in a new issue