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/**
******************************************************************************
* @file stm32l0xx_hal_comp_ex.c
* @author MCD Application Team
* @version V1.2.0
* @date 06-February-2015
* @brief Extended COMP HAL module driver.
* @brief This file provides firmware functions to manage the VREFINT
* which can act as input to the comparator.
@verbatim
==============================================================================
##### COMP peripheral Extended features #####
==============================================================================
[..] Comparing to other previous devices, the COMP interface for STM32L0XX
devices contains the following additional features
(+) Possibility to enable or disable the VREFINT which is used as input
to the comparator.
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_hal.h"
/** @addtogroup STM32L0xx_HAL_Driver
* @{
*/
/** @addtogroup COMPEx
* @brief Extended COMP HAL module driver
* @{
*/
#ifdef HAL_COMP_MODULE_ENABLED
/** @addtogroup COMPEx_Exported_Functions
* @{
*/
/** @addtogroup COMPEx_Exported_Functions_Group1
* @brief Extended functions to manage VREFINT for the comparator
*
* @{
*/
/**
* @brief Enables the Buffer Vrefint for the COMP.
* @note This is functional only if the LOCK bit is not set
* @retval None
*/
void HAL_COMPEx_EnableVREFINT(void)
{
/* Enable the Buffer for the COMP by setting EN_VREFINT bit and the ENBUFLP_VREFINT_COMP in the CFGR3 register */
SYSCFG->CFGR3 |= (SYSCFG_CFGR3_ENBUFLP_VREFINT_COMP | SYSCFG_CFGR3_EN_VREFINT);
}
/**
* @brief Disables the Buffer Vrefint for the COMP.
* @note This is functional only if the LOCK bit is not set
* @retval None
*/
void HAL_COMPEx_DisableVREFINT(void)
{
/* Disable the Vrefint by resetting ENBUFLP_BGAP_COMP bit and the EN_VREFINT bit in the CFGR3 register */
SYSCFG->CFGR3 &= (uint32_t)~((uint32_t)(SYSCFG_CFGR3_ENBUFLP_VREFINT_COMP | SYSCFG_CFGR3_EN_VREFINT));
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_COMP_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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