Diff: targets/TARGET_STM/TARGET_STM32L0/device/stm32l0xx_hal_comp_ex.c

Revision:

149:156823d33999

Parent:

144:ef7eb2e8f9f7

Child:

151:5eaa88a5bcc7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_STM/TARGET_STM32L0/device/stm32l0xx_hal_comp_ex.c	Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,119 @@
+/**
+  ******************************************************************************
+  * @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>&copy; 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****/