/** ****************************************************************************** * @file stm32l4xx_ll_comp.c * @author MCD Application Team * @brief COMP LL module driver ****************************************************************************** * @attention * *

© COPYRIGHT(c) 2017 STMicroelectronics

* * 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. * ****************************************************************************** */ #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 /** @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 serie, comparator input plus parameters are */ /* the same on all COMP instances. */ /* However, comparator instance kept as macro parameter for */ /* compatibility with other STM32 families. */ #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 /* Note: On this STM32 serie, comparator input minus parameters are */ /* the same on all COMP instances. */ /* However, comparator instance kept as macro parameter for */ /* compatibility with other STM32 families. */ #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 #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) \ ) #define IS_LL_COMP_OUTPUT_BLANKING_SOURCE(__COMP_INSTANCE__, __OUTPUT_BLANKING_SOURCE__) \ (((__OUTPUT_BLANKING_SOURCE__) == LL_COMP_BLANKINGSRC_NONE) \ ? ( \ (1U) \ ) \ : \ (((__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) \ ) \ ) \ ) /** * @} */ /* 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) == 0U) { LL_COMP_WriteReg(COMPx, CSR, 0x00000000U); } 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, 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) == 0U) { /* 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 } 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 */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/