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/**
******************************************************************************
* @file stm32h7xx_hal_smbus_ex.c
* @author MCD Application Team
* @brief SMBUS Extended HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of SMBUS Extended peripheral:
* + Extended features functions
*
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
@verbatim
==============================================================================
##### SMBUS peripheral Extended features #####
==============================================================================
[..] Comparing to other previous devices, the SMBUS interface for STM32H7xx
devices contains the following additional features
(+) Disable or enable wakeup from Stop mode(s)
(+) Disable or enable Fast Mode Plus
##### How to use this driver #####
==============================================================================
(#) Configure the enable or disable of SMBUS Wake Up Mode using the functions :
(++) HAL_SMBUSEx_EnableWakeUp()
(++) HAL_SMBUSEx_DisableWakeUp()
(#) Configure the enable or disable of fast mode plus driving capability using the functions :
(++) HAL_SMBUSEx_EnableFastModePlus()
(++) HAL_SMBUSEx_DisableFastModePlus()
@endverbatim
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32h7xx_hal.h"
/** @addtogroup STM32H7xx_HAL_Driver
* @{
*/
/** @defgroup SMBUSEx SMBUSEx
* @ingroup RTEMSBSPsARMSTM32H7
* @brief SMBUS Extended HAL module driver
* @{
*/
#ifdef HAL_SMBUS_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/** @defgroup SMBUSEx_Exported_Functions SMBUS Extended Exported Functions
* @ingroup RTEMSBSPsARMSTM32H7
* @{
*/
/** @defgroup SMBUSEx_Exported_Functions_Group2 WakeUp Mode Functions
* @ingroup RTEMSBSPsARMSTM32H7
* @brief WakeUp Mode Functions
*
@verbatim
===============================================================================
##### WakeUp Mode Functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) Configure Wake Up Feature
@endverbatim
* @{
*/
/**
* @brief Enable SMBUS wakeup from Stop mode(s).
* @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
* the configuration information for the specified SMBUSx peripheral.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SMBUSEx_EnableWakeUp(SMBUS_HandleTypeDef *hsmbus)
{
/* Check the parameters */
assert_param(IS_I2C_WAKEUP_FROMSTOP_INSTANCE(hsmbus->Instance));
if (hsmbus->State == HAL_SMBUS_STATE_READY)
{
/* Process Locked */
__HAL_LOCK(hsmbus);
hsmbus->State = HAL_SMBUS_STATE_BUSY;
/* Disable the selected SMBUS peripheral */
__HAL_SMBUS_DISABLE(hsmbus);
/* Enable wakeup from stop mode */
hsmbus->Instance->CR1 |= I2C_CR1_WUPEN;
__HAL_SMBUS_ENABLE(hsmbus);
hsmbus->State = HAL_SMBUS_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hsmbus);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Disable SMBUS wakeup from Stop mode(s).
* @param hsmbus Pointer to a SMBUS_HandleTypeDef structure that contains
* the configuration information for the specified SMBUSx peripheral.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SMBUSEx_DisableWakeUp(SMBUS_HandleTypeDef *hsmbus)
{
/* Check the parameters */
assert_param(IS_I2C_WAKEUP_FROMSTOP_INSTANCE(hsmbus->Instance));
if (hsmbus->State == HAL_SMBUS_STATE_READY)
{
/* Process Locked */
__HAL_LOCK(hsmbus);
hsmbus->State = HAL_SMBUS_STATE_BUSY;
/* Disable the selected SMBUS peripheral */
__HAL_SMBUS_DISABLE(hsmbus);
/* Disable wakeup from stop mode */
hsmbus->Instance->CR1 &= ~(I2C_CR1_WUPEN);
__HAL_SMBUS_ENABLE(hsmbus);
hsmbus->State = HAL_SMBUS_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hsmbus);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @}
*/
/** @defgroup SMBUSEx_Exported_Functions_Group3 Fast Mode Plus Functions
* @ingroup RTEMSBSPsARMSTM32H7
* @brief Fast Mode Plus Functions
*
@verbatim
===============================================================================
##### Fast Mode Plus Functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) Configure Fast Mode Plus
@endverbatim
* @{
*/
/**
* @brief Enable the SMBUS fast mode plus driving capability.
* @param ConfigFastModePlus Selects the pin.
* This parameter can be one of the @ref SMBUSEx_FastModePlus values
* @note For I2C1, fast mode plus driving capability can be enabled on all selected
* I2C1 pins using SMBUS_FASTMODEPLUS_I2C1 parameter or independently
* on each one of the following pins PB6, PB7, PB8 and PB9.
* @note For remaining I2C1 pins (PA14, PA15...) fast mode plus driving capability
* can be enabled only by using SMBUS_FASTMODEPLUS_I2C1 parameter.
* @note For all I2C2 pins fast mode plus driving capability can be enabled
* only by using SMBUS_FASTMODEPLUS_I2C2 parameter.
* @note For all I2C3 pins fast mode plus driving capability can be enabled
* only by using SMBUS_FASTMODEPLUS_I2C3 parameter.
* @note For all I2C4 pins fast mode plus driving capability can be enabled
* only by using SMBUS_FASTMODEPLUS_I2C4 parameter.
* @note For all I2C5 pins fast mode plus driving capability can be enabled
* only by using SMBUS_FASTMODEPLUS_I2C5 parameter.
* @retval None
*/
void HAL_SMBUSEx_EnableFastModePlus(uint32_t ConfigFastModePlus)
{
/* Check the parameter */
assert_param(IS_SMBUS_FASTMODEPLUS(ConfigFastModePlus));
/* Enable SYSCFG clock */
__HAL_RCC_SYSCFG_CLK_ENABLE();
/* Enable fast mode plus driving capability for selected pin */
SET_BIT(SYSCFG->PMCR, (uint32_t)ConfigFastModePlus);
}
/**
* @brief Disable the SMBUS fast mode plus driving capability.
* @param ConfigFastModePlus Selects the pin.
* This parameter can be one of the @ref SMBUSEx_FastModePlus values
* @note For I2C1, fast mode plus driving capability can be disabled on all selected
* I2C1 pins using SMBUS_FASTMODEPLUS_I2C1 parameter or independently
* on each one of the following pins PB6, PB7, PB8 and PB9.
* @note For remaining I2C1 pins (PA14, PA15...) fast mode plus driving capability
* can be disabled only by using SMBUS_FASTMODEPLUS_I2C1 parameter.
* @note For all I2C2 pins fast mode plus driving capability can be disabled
* only by using SMBUS_FASTMODEPLUS_I2C2 parameter.
* @note For all I2C3 pins fast mode plus driving capability can be disabled
* only by using SMBUS_FASTMODEPLUS_I2C3 parameter.
* @note For all I2C4 pins fast mode plus driving capability can be disabled
* only by using SMBUS_FASTMODEPLUS_I2C4 parameter.
* @note For all I2C5 pins fast mode plus driving capability can be disabled
* only by using SMBUS_FASTMODEPLUS_I2C5 parameter.
* @retval None
*/
void HAL_SMBUSEx_DisableFastModePlus(uint32_t ConfigFastModePlus)
{
/* Check the parameter */
assert_param(IS_SMBUS_FASTMODEPLUS(ConfigFastModePlus));
/* Enable SYSCFG clock */
__HAL_RCC_SYSCFG_CLK_ENABLE();
/* Disable fast mode plus driving capability for selected pin */
CLEAR_BIT(SYSCFG->PMCR, (uint32_t)ConfigFastModePlus);
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_SMBUS_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
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