259 lines
8.4 KiB
C
259 lines
8.4 KiB
C
/**
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******************************************************************************
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* @file stm32h7xx_hal_smbus_ex.c
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* @author MCD Application Team
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* @brief SMBUS Extended HAL module driver.
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* This file provides firmware functions to manage the following
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* functionalities of SMBUS Extended peripheral:
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* + Extended features functions
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*
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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@verbatim
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==============================================================================
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##### SMBUS peripheral Extended features #####
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==============================================================================
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[..] Comparing to other previous devices, the SMBUS interface for STM32H7xx
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devices contains the following additional features
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(+) Disable or enable wakeup from Stop mode(s)
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(+) Disable or enable Fast Mode Plus
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##### How to use this driver #####
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==============================================================================
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(#) Configure the enable or disable of SMBUS Wake Up Mode using the functions :
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(++) HAL_SMBUSEx_EnableWakeUp()
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(++) HAL_SMBUSEx_DisableWakeUp()
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(#) Configure the enable or disable of fast mode plus driving capability using the functions :
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(++) HAL_SMBUSEx_EnableFastModePlus()
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(++) HAL_SMBUSEx_DisableFastModePlus()
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@endverbatim
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32h7xx_hal.h"
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/** @addtogroup STM32H7xx_HAL_Driver
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* @{
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*/
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/** @defgroup SMBUSEx SMBUSEx
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* @brief SMBUS Extended HAL module driver
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* @{
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*/
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#ifdef HAL_SMBUS_MODULE_ENABLED
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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/** @defgroup SMBUSEx_Exported_Functions SMBUS Extended Exported Functions
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* @{
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*/
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/** @defgroup SMBUSEx_Exported_Functions_Group2 WakeUp Mode Functions
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* @brief WakeUp Mode Functions
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*
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@verbatim
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===============================================================================
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##### WakeUp Mode Functions #####
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===============================================================================
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[..] This section provides functions allowing to:
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(+) Configure Wake Up Feature
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@endverbatim
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* @{
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*/
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/**
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* @brief Enable SMBUS wakeup from Stop mode(s).
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* @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
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* the configuration information for the specified SMBUSx peripheral.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_SMBUSEx_EnableWakeUp(SMBUS_HandleTypeDef *hsmbus)
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{
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/* Check the parameters */
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assert_param(IS_I2C_WAKEUP_FROMSTOP_INSTANCE(hsmbus->Instance));
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if (hsmbus->State == HAL_SMBUS_STATE_READY)
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{
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/* Process Locked */
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__HAL_LOCK(hsmbus);
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hsmbus->State = HAL_SMBUS_STATE_BUSY;
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/* Disable the selected SMBUS peripheral */
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__HAL_SMBUS_DISABLE(hsmbus);
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/* Enable wakeup from stop mode */
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hsmbus->Instance->CR1 |= I2C_CR1_WUPEN;
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__HAL_SMBUS_ENABLE(hsmbus);
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hsmbus->State = HAL_SMBUS_STATE_READY;
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/* Process Unlocked */
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__HAL_UNLOCK(hsmbus);
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return HAL_OK;
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}
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else
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{
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return HAL_BUSY;
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}
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}
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/**
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* @brief Disable SMBUS wakeup from Stop mode(s).
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* @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
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* the configuration information for the specified SMBUSx peripheral.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_SMBUSEx_DisableWakeUp(SMBUS_HandleTypeDef *hsmbus)
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{
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/* Check the parameters */
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assert_param(IS_I2C_WAKEUP_FROMSTOP_INSTANCE(hsmbus->Instance));
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if (hsmbus->State == HAL_SMBUS_STATE_READY)
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{
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/* Process Locked */
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__HAL_LOCK(hsmbus);
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hsmbus->State = HAL_SMBUS_STATE_BUSY;
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/* Disable the selected SMBUS peripheral */
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__HAL_SMBUS_DISABLE(hsmbus);
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/* Disable wakeup from stop mode */
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hsmbus->Instance->CR1 &= ~(I2C_CR1_WUPEN);
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__HAL_SMBUS_ENABLE(hsmbus);
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hsmbus->State = HAL_SMBUS_STATE_READY;
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/* Process Unlocked */
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__HAL_UNLOCK(hsmbus);
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return HAL_OK;
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}
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else
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{
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return HAL_BUSY;
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}
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}
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/**
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* @}
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*/
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/** @defgroup SMBUSEx_Exported_Functions_Group3 Fast Mode Plus Functions
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* @brief Fast Mode Plus Functions
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*
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@verbatim
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===============================================================================
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##### Fast Mode Plus Functions #####
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===============================================================================
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[..] This section provides functions allowing to:
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(+) Configure Fast Mode Plus
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@endverbatim
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* @{
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*/
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/**
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* @brief Enable the SMBUS fast mode plus driving capability.
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* @param ConfigFastModePlus Selects the pin.
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* This parameter can be one of the @ref SMBUSEx_FastModePlus values
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* @note For I2C1, fast mode plus driving capability can be enabled on all selected
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* I2C1 pins using SMBUS_FASTMODEPLUS_I2C1 parameter or independently
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* on each one of the following pins PB6, PB7, PB8 and PB9.
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* @note For remaining I2C1 pins (PA14, PA15...) fast mode plus driving capability
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* can be enabled only by using SMBUS_FASTMODEPLUS_I2C1 parameter.
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* @note For all I2C2 pins fast mode plus driving capability can be enabled
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* only by using SMBUS_FASTMODEPLUS_I2C2 parameter.
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* @note For all I2C3 pins fast mode plus driving capability can be enabled
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* only by using SMBUS_FASTMODEPLUS_I2C3 parameter.
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* @note For all I2C4 pins fast mode plus driving capability can be enabled
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* only by using SMBUS_FASTMODEPLUS_I2C4 parameter.
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* @note For all I2C5 pins fast mode plus driving capability can be enabled
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* only by using SMBUS_FASTMODEPLUS_I2C5 parameter.
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* @retval None
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*/
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void HAL_SMBUSEx_EnableFastModePlus(uint32_t ConfigFastModePlus)
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{
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/* Check the parameter */
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assert_param(IS_SMBUS_FASTMODEPLUS(ConfigFastModePlus));
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/* Enable SYSCFG clock */
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__HAL_RCC_SYSCFG_CLK_ENABLE();
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/* Enable fast mode plus driving capability for selected pin */
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SET_BIT(SYSCFG->PMCR, (uint32_t)ConfigFastModePlus);
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}
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/**
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* @brief Disable the SMBUS fast mode plus driving capability.
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* @param ConfigFastModePlus Selects the pin.
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* This parameter can be one of the @ref SMBUSEx_FastModePlus values
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* @note For I2C1, fast mode plus driving capability can be disabled on all selected
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* I2C1 pins using SMBUS_FASTMODEPLUS_I2C1 parameter or independently
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* on each one of the following pins PB6, PB7, PB8 and PB9.
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* @note For remaining I2C1 pins (PA14, PA15...) fast mode plus driving capability
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* can be disabled only by using SMBUS_FASTMODEPLUS_I2C1 parameter.
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* @note For all I2C2 pins fast mode plus driving capability can be disabled
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* only by using SMBUS_FASTMODEPLUS_I2C2 parameter.
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* @note For all I2C3 pins fast mode plus driving capability can be disabled
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* only by using SMBUS_FASTMODEPLUS_I2C3 parameter.
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* @note For all I2C4 pins fast mode plus driving capability can be disabled
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* only by using SMBUS_FASTMODEPLUS_I2C4 parameter.
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* @note For all I2C5 pins fast mode plus driving capability can be disabled
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* only by using SMBUS_FASTMODEPLUS_I2C5 parameter.
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* @retval None
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*/
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void HAL_SMBUSEx_DisableFastModePlus(uint32_t ConfigFastModePlus)
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{
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/* Check the parameter */
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assert_param(IS_SMBUS_FASTMODEPLUS(ConfigFastModePlus));
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/* Enable SYSCFG clock */
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__HAL_RCC_SYSCFG_CLK_ENABLE();
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/* Disable fast mode plus driving capability for selected pin */
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CLEAR_BIT(SYSCFG->PMCR, (uint32_t)ConfigFastModePlus);
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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 /* HAL_SMBUS_MODULE_ENABLED */
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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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