199 lines
6.2 KiB
C
199 lines
6.2 KiB
C
/**
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******************************************************************************
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* @file py32f002b_ll_comp.c
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* @author MCU Application Team
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* @brief COMP LL module driver.
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) Puya Semiconductor Co.
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* All rights reserved.</center></h2>
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*
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* <h2><center>© Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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*/
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#if defined(USE_FULL_LL_DRIVER)
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/* Includes ------------------------------------------------------------------*/
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#include "py32f002b_ll_comp.h"
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#include "py32f002b_ll_bus.h"
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#ifdef USE_FULL_ASSERT
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#include "py32_assert.h"
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#else
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#define assert_param(expr) ((void)0U)
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#endif /* USE_FULL_ASSERT */
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/** @addtogroup PY32002B_LL_Driver
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* @{
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*/
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#if defined (COMP1) || defined (COMP2)
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/** @addtogroup COMP_LL COMP
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* @{
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*/
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/* Private types -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private constants ---------------------------------------------------------*/
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/* Private macros ------------------------------------------------------------*/
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/** @addtogroup COMP_LL_Private_Macros
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* @{
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*/
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/* Check of parameters for configuration of COMP hierarchical scope: */
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/* COMP instance. */
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#define IS_LL_COMP_INPUT_PLUS(__COMP_INSTANCE__, __INPUT_PLUS__) \
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( ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO1) \
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|| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO2) \
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)
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#define IS_LL_COMP_INPUT_MINUS(__COMP_INSTANCE__, __INPUT_MINUS__) \
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( ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO1) \
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|| ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO2) \
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)
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#define IS_LL_COMP_OUTPUT_POLARITY(__POLARITY__) \
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( ((__POLARITY__) == LL_COMP_OUTPUTPOL_NONINVERTED) \
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|| ((__POLARITY__) == LL_COMP_OUTPUTPOL_INVERTED) \
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)
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/**
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* @}
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*/
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/* Private function prototypes -----------------------------------------------*/
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/* Exported functions --------------------------------------------------------*/
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/** @addtogroup COMP_LL_Exported_Functions
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* @{
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*/
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/** @addtogroup COMP_LL_EF_Init
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* @{
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*/
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/**
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* @brief De-initialize registers of the selected COMP instance
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* to their default reset values.
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* @note If comparator is locked, de-initialization by software is
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* not possible.
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* The only way to unlock the comparator is a device hardware reset.
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* @param COMPx COMP instance
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* @retval An ErrorStatus enumeration value:
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* - SUCCESS: COMP registers are de-initialized
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* - ERROR: COMP registers are not de-initialized
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*/
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ErrorStatus LL_COMP_DeInit(COMP_TypeDef *COMPx)
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{
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ErrorStatus status = SUCCESS;
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/* Check the parameters */
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assert_param(IS_COMP_ALL_INSTANCE(COMPx));
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LL_COMP_WriteReg(COMPx, CSR, 0x00000000U);
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LL_COMP_WriteReg(COMPx, FR, 0x00000000U);
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return status;
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}
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/**
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* @brief Initialize some features of COMP instance.
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* @note This function configures features of the selected COMP instance.
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* Some features are also available at scope COMP common instance
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* (common to several COMP instances).
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* Refer to functions having argument "COMPxy_COMMON" as parameter.
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* @param COMPx COMP instance
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* @param COMP_InitStruct Pointer to a @ref LL_COMP_InitTypeDef structure
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* @retval An ErrorStatus enumeration value:
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* - SUCCESS: COMP registers are initialized
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* - ERROR: COMP registers are not initialized
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*/
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ErrorStatus LL_COMP_Init(COMP_TypeDef *COMPx, LL_COMP_InitTypeDef *COMP_InitStruct)
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{
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ErrorStatus status = SUCCESS;
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/* Check the parameters */
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assert_param(IS_COMP_ALL_INSTANCE(COMPx));
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assert_param(IS_LL_COMP_INPUT_PLUS(COMPx, COMP_InitStruct->InputPlus));
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assert_param(IS_LL_COMP_INPUT_MINUS(COMPx, COMP_InitStruct->InputMinus));
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assert_param(IS_LL_COMP_OUTPUT_POLARITY(COMP_InitStruct->OutputPolarity));
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/* Configuration of comparator instance : */
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/* - InputPlus */
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/* - InputMinus */
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/* - OutputPolarity */
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MODIFY_REG(COMPx->CSR,
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COMP_CSR_INPSEL
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| COMP_CSR_INNSEL
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| COMP_CSR_POLARITY
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,
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COMP_InitStruct->InputPlus
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| COMP_InitStruct->InputMinus
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| COMP_InitStruct->OutputPolarity
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);
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if (COMP_InitStruct->DigitalFilter == 0)
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{
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/* Disable digital filter */
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CLEAR_BIT(COMPx->FR, COMP_FR_FLTEN);
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}
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else
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{
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WRITE_REG(COMPx->FR, (COMP_FR_FLTEN | (COMP_InitStruct->DigitalFilter << COMP_FR_FLTCNT_Pos)));
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}
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return status;
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}
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/**
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* @brief Set each @ref LL_COMP_InitTypeDef field to default value.
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* @param COMP_InitStruct Pointer to a @ref LL_COMP_InitTypeDef structure
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* whose fields will be set to default values.
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* @retval None
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*/
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void LL_COMP_StructInit(LL_COMP_InitTypeDef *COMP_InitStruct)
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{
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/* Set COMP_InitStruct fields to default values */
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COMP_InitStruct->InputPlus = LL_COMP_INPUT_PLUS_IO1;
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COMP_InitStruct->InputMinus = LL_COMP_INPUT_MINUS_IO1;
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COMP_InitStruct->OutputPolarity = LL_COMP_OUTPUTPOL_NONINVERTED;
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COMP_InitStruct->DigitalFilter = 0;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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#endif /* COMP1 || COMP2 */
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/**
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* @}
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*/
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#endif /* USE_FULL_LL_DRIVER */
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/************************ (C) COPYRIGHT Puya *****END OF FILE****/
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