| /** |
| ****************************************************************************** |
| * @file stm32l4xx_ll_comp.c |
| * @author MCD Application Team |
| * @brief COMP LL module driver |
| ****************************************************************************** |
| * @attention |
| * |
| * Copyright (c) 2017 STMicroelectronics. |
| * All rights reserved. |
| * |
| * This software is licensed under terms that can be found in the LICENSE file |
| * in the root directory of this software component. |
| * If no LICENSE file comes with this software, it is provided AS-IS. |
| * |
| ****************************************************************************** |
| */ |
| |
| #if defined(USE_FULL_LL_DRIVER) |
| |
| /* Includes ------------------------------------------------------------------*/ |
| #include "stm32l4xx_ll_comp.h" |
| |
| #ifdef USE_FULL_ASSERT |
| #include "stm32_assert.h" |
| #else |
| #define assert_param(expr) ((void)0U) |
| #endif /* USE_FULL_ASSERT */ |
| |
| /** @addtogroup STM32L4xx_LL_Driver |
| * @{ |
| */ |
| |
| #if defined (COMP1) || defined (COMP2) |
| |
| /** @addtogroup COMP_LL COMP |
| * @{ |
| */ |
| |
| /* Private types -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private constants ---------------------------------------------------------*/ |
| /* Private macros ------------------------------------------------------------*/ |
| |
| /** @addtogroup COMP_LL_Private_Macros |
| * @{ |
| */ |
| |
| /* Check of parameters for configuration of COMP hierarchical scope: */ |
| /* COMP instance. */ |
| |
| #define IS_LL_COMP_POWER_MODE(__POWER_MODE__) \ |
| (((__POWER_MODE__) == LL_COMP_POWERMODE_HIGHSPEED) \ |
| || ((__POWER_MODE__) == LL_COMP_POWERMODE_MEDIUMSPEED) \ |
| || ((__POWER_MODE__) == LL_COMP_POWERMODE_ULTRALOWPOWER) \ |
| ) |
| |
| /* Note: On this STM32 series, comparator input plus parameters are */ |
| /* the same on all COMP instances. */ |
| /* However, comparator instance kept as macro parameter for */ |
| /* compatibility with other STM32 series. */ |
| #if defined(COMP_CSR_INPSEL_1) |
| #define IS_LL_COMP_INPUT_PLUS(__COMP_INSTANCE__, __INPUT_PLUS__) \ |
| (((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO1) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO2) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO3) \ |
| ) |
| #else |
| #define IS_LL_COMP_INPUT_PLUS(__COMP_INSTANCE__, __INPUT_PLUS__) \ |
| (((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO1) \ |
| || ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO2) \ |
| ) |
| #endif /* COMP_CSR_INPSEL_1 */ |
| |
| /* Note: On this STM32 series, comparator input minus parameters are */ |
| /* the same on all COMP instances. */ |
| /* However, comparator instance kept as macro parameter for */ |
| /* compatibility with other STM32 series. */ |
| #if defined(COMP_CSR_INMESEL_1) |
| #define IS_LL_COMP_INPUT_MINUS(__COMP_INSTANCE__, __INPUT_MINUS__) \ |
| (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_1_4VREFINT) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_1_2VREFINT) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_3_4VREFINT) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_VREFINT) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH1) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH2) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO1) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO2) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO3) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO4) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO5) \ |
| ) |
| #else |
| #define IS_LL_COMP_INPUT_MINUS(__COMP_INSTANCE__, __INPUT_MINUS__) \ |
| (((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_1_4VREFINT) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_1_2VREFINT) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_3_4VREFINT) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_VREFINT) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH1) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH2) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO1) \ |
| || ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO2) \ |
| ) |
| #endif /* COMP_CSR_INMESEL_1 */ |
| |
| #define IS_LL_COMP_INPUT_HYSTERESIS(__INPUT_HYSTERESIS__) \ |
| (((__INPUT_HYSTERESIS__) == LL_COMP_HYSTERESIS_NONE) \ |
| || ((__INPUT_HYSTERESIS__) == LL_COMP_HYSTERESIS_LOW) \ |
| || ((__INPUT_HYSTERESIS__) == LL_COMP_HYSTERESIS_MEDIUM) \ |
| || ((__INPUT_HYSTERESIS__) == LL_COMP_HYSTERESIS_HIGH) \ |
| ) |
| |
| #define IS_LL_COMP_OUTPUT_POLARITY(__POLARITY__) \ |
| (((__POLARITY__) == LL_COMP_OUTPUTPOL_NONINVERTED) \ |
| || ((__POLARITY__) == LL_COMP_OUTPUTPOL_INVERTED) \ |
| ) |
| |
| #if defined(COMP2) |
| #define IS_LL_COMP_OUTPUT_BLANKING_SOURCE(__COMP_INSTANCE__, __OUTPUT_BLANKING_SOURCE__) \ |
| (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) \ |
| || (((__COMP_INSTANCE__) == COMP1) \ |
| ? ( \ |
| ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP1) \ |
| || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC3_COMP1) \ |
| || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC3_COMP1) \ |
| ) \ |
| : \ |
| ( \ |
| ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC4_COMP2) \ |
| || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM8_OC5_COMP2) \ |
| || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM15_OC1_COMP2) \ |
| ) \ |
| ) \ |
| ) |
| #else |
| #if defined(TIM3) |
| #define IS_LL_COMP_OUTPUT_BLANKING_SOURCE(__COMP_INSTANCE__, __OUTPUT_BLANKING_SOURCE__) \ |
| (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) \ |
| || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP1) \ |
| || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC3_COMP1) \ |
| || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM3_OC3_COMP1) \ |
| ) |
| #else |
| #define IS_LL_COMP_OUTPUT_BLANKING_SOURCE(__COMP_INSTANCE__, __OUTPUT_BLANKING_SOURCE__) \ |
| (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) \ |
| || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM1_OC5_COMP1) \ |
| || ((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_TIM2_OC3_COMP1) \ |
| ) |
| #endif /* TIM3 */ |
| #endif /* COMP2 */ |
| /** |
| * @} |
| */ |
| |
| |
| /* Private function prototypes -----------------------------------------------*/ |
| |
| /* Exported functions --------------------------------------------------------*/ |
| /** @addtogroup COMP_LL_Exported_Functions |
| * @{ |
| */ |
| |
| /** @addtogroup COMP_LL_EF_Init |
| * @{ |
| */ |
| |
| /** |
| * @brief De-initialize registers of the selected COMP instance |
| * to their default reset values. |
| * @note If comparator is locked, de-initialization by software is |
| * not possible. |
| * The only way to unlock the comparator is a device hardware reset. |
| * @param COMPx COMP instance |
| * @retval An ErrorStatus enumeration value: |
| * - SUCCESS: COMP registers are de-initialized |
| * - ERROR: COMP registers are not de-initialized |
| */ |
| ErrorStatus LL_COMP_DeInit(COMP_TypeDef *COMPx) |
| { |
| ErrorStatus status = SUCCESS; |
| |
| /* Check the parameters */ |
| assert_param(IS_COMP_ALL_INSTANCE(COMPx)); |
| |
| /* Note: Hardware constraint (refer to description of this function): */ |
| /* COMP instance must not be locked. */ |
| if (LL_COMP_IsLocked(COMPx) == 0UL) |
| { |
| LL_COMP_WriteReg(COMPx, CSR, 0x00000000UL); |
| |
| } |
| else |
| { |
| /* Comparator instance is locked: de-initialization by software is */ |
| /* not possible. */ |
| /* The only way to unlock the comparator is a device hardware reset. */ |
| status = ERROR; |
| } |
| |
| return status; |
| } |
| |
| /** |
| * @brief Initialize some features of COMP instance. |
| * @note This function configures features of the selected COMP instance. |
| * Some features are also available at scope COMP common instance |
| * (common to several COMP instances). |
| * Refer to functions having argument "COMPxy_COMMON" as parameter. |
| * @param COMPx COMP instance |
| * @param COMP_InitStruct Pointer to a @ref LL_COMP_InitTypeDef structure |
| * @retval An ErrorStatus enumeration value: |
| * - SUCCESS: COMP registers are initialized |
| * - ERROR: COMP registers are not initialized |
| */ |
| ErrorStatus LL_COMP_Init(COMP_TypeDef *COMPx, const LL_COMP_InitTypeDef *COMP_InitStruct) |
| { |
| ErrorStatus status = SUCCESS; |
| |
| /* Check the parameters */ |
| assert_param(IS_COMP_ALL_INSTANCE(COMPx)); |
| assert_param(IS_LL_COMP_POWER_MODE(COMP_InitStruct->PowerMode)); |
| assert_param(IS_LL_COMP_INPUT_PLUS(COMPx, COMP_InitStruct->InputPlus)); |
| assert_param(IS_LL_COMP_INPUT_MINUS(COMPx, COMP_InitStruct->InputMinus)); |
| assert_param(IS_LL_COMP_INPUT_HYSTERESIS(COMP_InitStruct->InputHysteresis)); |
| assert_param(IS_LL_COMP_OUTPUT_POLARITY(COMP_InitStruct->OutputPolarity)); |
| assert_param(IS_LL_COMP_OUTPUT_BLANKING_SOURCE(COMPx, COMP_InitStruct->OutputBlankingSource)); |
| |
| /* Note: Hardware constraint (refer to description of this function) */ |
| /* COMP instance must not be locked. */ |
| if (LL_COMP_IsLocked(COMPx) == 0UL) |
| { |
| /* Configuration of comparator instance : */ |
| /* - PowerMode */ |
| /* - InputPlus */ |
| /* - InputMinus */ |
| /* - InputHysteresis */ |
| /* - OutputPolarity */ |
| /* - OutputBlankingSource */ |
| #if defined(COMP_CSR_INMESEL_1) |
| MODIFY_REG(COMPx->CSR, |
| COMP_CSR_PWRMODE |
| | COMP_CSR_INPSEL |
| | COMP_CSR_SCALEN |
| | COMP_CSR_BRGEN |
| | COMP_CSR_INMESEL |
| | COMP_CSR_INMSEL |
| | COMP_CSR_HYST |
| | COMP_CSR_POLARITY |
| | COMP_CSR_BLANKING |
| , |
| COMP_InitStruct->PowerMode |
| | COMP_InitStruct->InputPlus |
| | COMP_InitStruct->InputMinus |
| | COMP_InitStruct->InputHysteresis |
| | COMP_InitStruct->OutputPolarity |
| | COMP_InitStruct->OutputBlankingSource |
| ); |
| #else |
| MODIFY_REG(COMPx->CSR, |
| COMP_CSR_PWRMODE |
| | COMP_CSR_INPSEL |
| | COMP_CSR_SCALEN |
| | COMP_CSR_BRGEN |
| | COMP_CSR_INMSEL |
| | COMP_CSR_HYST |
| | COMP_CSR_POLARITY |
| | COMP_CSR_BLANKING |
| , |
| COMP_InitStruct->PowerMode |
| | COMP_InitStruct->InputPlus |
| | COMP_InitStruct->InputMinus |
| | COMP_InitStruct->InputHysteresis |
| | COMP_InitStruct->OutputPolarity |
| | COMP_InitStruct->OutputBlankingSource |
| ); |
| #endif /* COMP_CSR_INMESEL_1 */ |
| |
| } |
| else |
| { |
| /* Initialization error: COMP instance is locked. */ |
| status = ERROR; |
| } |
| |
| return status; |
| } |
| |
| /** |
| * @brief Set each @ref LL_COMP_InitTypeDef field to default value. |
| * @param COMP_InitStruct Pointer to a @ref LL_COMP_InitTypeDef structure |
| * whose fields will be set to default values. |
| * @retval None |
| */ |
| void LL_COMP_StructInit(LL_COMP_InitTypeDef *COMP_InitStruct) |
| { |
| /* Set COMP_InitStruct fields to default values */ |
| COMP_InitStruct->PowerMode = LL_COMP_POWERMODE_ULTRALOWPOWER; |
| COMP_InitStruct->InputPlus = LL_COMP_INPUT_PLUS_IO1; |
| COMP_InitStruct->InputMinus = LL_COMP_INPUT_MINUS_VREFINT; |
| COMP_InitStruct->InputHysteresis = LL_COMP_HYSTERESIS_NONE; |
| COMP_InitStruct->OutputPolarity = LL_COMP_OUTPUTPOL_NONINVERTED; |
| COMP_InitStruct->OutputBlankingSource = LL_COMP_BLANKINGSRC_NONE; |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* COMP1 || COMP2 */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* USE_FULL_LL_DRIVER */ |
