/** ****************************************************************************** * @file stm32l0xx_hal_comp_ex.c * @author MCD Application Team * @version V1.5.0 * @date 8-January-2016 * @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) 2016 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 * @{ */ #ifdef HAL_COMP_MODULE_ENABLED /** @addtogroup COMPEx * @brief Extended COMP HAL module driver * @{ */ /** @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****/