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targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_comp_ex.c@638:56887a2974b9, 2016-09-08 (annotated)

Committer:
lzbpli
Date:
Thu Sep 08 02:46:37 2016 +0000
Revision:
638:56887a2974b9
Parent:
489:119543c9f674 
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mbed_official 489:119543c9f674 1 /**
mbed_official 489:119543c9f674 2 ******************************************************************************
mbed_official 489:119543c9f674 3 * @file stm32l0xx_hal_comp_ex.c
mbed_official 489:119543c9f674 4 * @author MCD Application Team
mbed_official 489:119543c9f674 5 * @version V1.2.0
mbed_official 489:119543c9f674 6 * @date 06-February-2015
mbed_official 489:119543c9f674 7 * @brief Extended COMP HAL module driver.
mbed_official 489:119543c9f674 8 * @brief This file provides firmware functions to manage the VREFINT
mbed_official 489:119543c9f674 9 * which can act as input to the comparator.
mbed_official 489:119543c9f674 10 @verbatim
mbed_official 489:119543c9f674 11 ==============================================================================
mbed_official 489:119543c9f674 12 ##### COMP peripheral Extended features #####
mbed_official 489:119543c9f674 13 ==============================================================================
mbed_official 489:119543c9f674 14
mbed_official 489:119543c9f674 15 [..] Comparing to other previous devices, the COMP interface for STM32L0XX
mbed_official 489:119543c9f674 16 devices contains the following additional features
mbed_official 489:119543c9f674 17
mbed_official 489:119543c9f674 18 (+) Possibility to enable or disable the VREFINT which is used as input
mbed_official 489:119543c9f674 19 to the comparator.
mbed_official 489:119543c9f674 20
mbed_official 489:119543c9f674 21
mbed_official 489:119543c9f674 22 @endverbatim
mbed_official 489:119543c9f674 23 ******************************************************************************
mbed_official 489:119543c9f674 24 * @attention
mbed_official 489:119543c9f674 25 *
mbed_official 489:119543c9f674 26 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
mbed_official 489:119543c9f674 27 *
mbed_official 489:119543c9f674 28 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 489:119543c9f674 29 * are permitted provided that the following conditions are met:
mbed_official 489:119543c9f674 30 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 489:119543c9f674 31 * this list of conditions and the following disclaimer.
mbed_official 489:119543c9f674 32 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 489:119543c9f674 33 * this list of conditions and the following disclaimer in the documentation
mbed_official 489:119543c9f674 34 * and/or other materials provided with the distribution.
mbed_official 489:119543c9f674 35 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 489:119543c9f674 36 * may be used to endorse or promote products derived from this software
mbed_official 489:119543c9f674 37 * without specific prior written permission.
mbed_official 489:119543c9f674 38 *
mbed_official 489:119543c9f674 39 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 489:119543c9f674 40 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 489:119543c9f674 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 489:119543c9f674 42 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 489:119543c9f674 43 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 489:119543c9f674 44 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 489:119543c9f674 45 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 489:119543c9f674 46 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 489:119543c9f674 47 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 489:119543c9f674 48 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 489:119543c9f674 49 *
mbed_official 489:119543c9f674 50 ******************************************************************************
mbed_official 489:119543c9f674 51 */
mbed_official 489:119543c9f674 52
mbed_official 489:119543c9f674 53 /* Includes ------------------------------------------------------------------*/
mbed_official 489:119543c9f674 54 #include "stm32l0xx_hal.h"
mbed_official 489:119543c9f674 55
mbed_official 489:119543c9f674 56 /** @addtogroup STM32L0xx_HAL_Driver
mbed_official 489:119543c9f674 57 * @{
mbed_official 489:119543c9f674 58 */
mbed_official 489:119543c9f674 59
mbed_official 489:119543c9f674 60 /** @addtogroup COMPEx
mbed_official 489:119543c9f674 61 * @brief Extended COMP HAL module driver
mbed_official 489:119543c9f674 62 * @{
mbed_official 489:119543c9f674 63 */
mbed_official 489:119543c9f674 64
mbed_official 489:119543c9f674 65 #ifdef HAL_COMP_MODULE_ENABLED
mbed_official 489:119543c9f674 66
mbed_official 489:119543c9f674 67
mbed_official 489:119543c9f674 68 /** @addtogroup COMPEx_Exported_Functions
mbed_official 489:119543c9f674 69 * @{
mbed_official 489:119543c9f674 70 */
mbed_official 489:119543c9f674 71
mbed_official 489:119543c9f674 72 /** @addtogroup COMPEx_Exported_Functions_Group1
mbed_official 489:119543c9f674 73 * @brief Extended functions to manage VREFINT for the comparator
mbed_official 489:119543c9f674 74 *
mbed_official 489:119543c9f674 75 * @{
mbed_official 489:119543c9f674 76 */
mbed_official 489:119543c9f674 77
mbed_official 489:119543c9f674 78 /**
mbed_official 489:119543c9f674 79 * @brief Enables the Buffer Vrefint for the COMP.
mbed_official 489:119543c9f674 80 * @note This is functional only if the LOCK bit is not set
mbed_official 489:119543c9f674 81
mbed_official 489:119543c9f674 82 * @retval None
mbed_official 489:119543c9f674 83 */
mbed_official 489:119543c9f674 84 void HAL_COMPEx_EnableVREFINT(void)
mbed_official 489:119543c9f674 85 {
mbed_official 489:119543c9f674 86 /* Enable the Buffer for the COMP by setting EN_VREFINT bit and the ENBUFLP_VREFINT_COMP in the CFGR3 register */
mbed_official 489:119543c9f674 87
mbed_official 489:119543c9f674 88 SYSCFG->CFGR3 |= (SYSCFG_CFGR3_ENBUFLP_VREFINT_COMP | SYSCFG_CFGR3_EN_VREFINT);
mbed_official 489:119543c9f674 89 }
mbed_official 489:119543c9f674 90
mbed_official 489:119543c9f674 91 /**
mbed_official 489:119543c9f674 92 * @brief Disables the Buffer Vrefint for the COMP.
mbed_official 489:119543c9f674 93 * @note This is functional only if the LOCK bit is not set
mbed_official 489:119543c9f674 94 * @retval None
mbed_official 489:119543c9f674 95 */
mbed_official 489:119543c9f674 96 void HAL_COMPEx_DisableVREFINT(void)
mbed_official 489:119543c9f674 97 {
mbed_official 489:119543c9f674 98 /* Disable the Vrefint by resetting ENBUFLP_BGAP_COMP bit and the EN_VREFINT bit in the CFGR3 register */
mbed_official 489:119543c9f674 99
mbed_official 489:119543c9f674 100 SYSCFG->CFGR3 &= (uint32_t)~((uint32_t)(SYSCFG_CFGR3_ENBUFLP_VREFINT_COMP | SYSCFG_CFGR3_EN_VREFINT));
mbed_official 489:119543c9f674 101 }
mbed_official 489:119543c9f674 102
mbed_official 489:119543c9f674 103 /**
mbed_official 489:119543c9f674 104 * @}
mbed_official 489:119543c9f674 105 */
mbed_official 489:119543c9f674 106
mbed_official 489:119543c9f674 107 /**
mbed_official 489:119543c9f674 108 * @}
mbed_official 489:119543c9f674 109 */
mbed_official 489:119543c9f674 110
mbed_official 489:119543c9f674 111
mbed_official 489:119543c9f674 112 #endif /* HAL_COMP_MODULE_ENABLED */
mbed_official 489:119543c9f674 113 /**
mbed_official 489:119543c9f674 114 * @}
mbed_official 489:119543c9f674 115 */
mbed_official 489:119543c9f674 116
mbed_official 489:119543c9f674 117 /**
mbed_official 489:119543c9f674 118 * @}
mbed_official 489:119543c9f674 119 */
mbed_official 489:119543c9f674 120 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/