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- /**
- ******************************************************************************
- * @file stm32l1xx_ll_opamp.c
- * @author MCD Application Team
- * @brief OPAMP LL module driver
- ******************************************************************************
- * @attention
- *
- * <h2><center>© Copyright (c) 2017 STMicroelectronics.
- * All rights reserved.</center></h2>
- *
- * This software component is licensed by ST under BSD 3-Clause license,
- * the "License"; You may not use this file except in compliance with the
- * License. You may obtain a copy of the License at:
- * opensource.org/licenses/BSD-3-Clause
- *
- ******************************************************************************
- */
- #if defined(USE_FULL_LL_DRIVER)
-
- /* Includes ------------------------------------------------------------------*/
- #include "stm32l1xx_ll_opamp.h"
-
- #ifdef USE_FULL_ASSERT
- #include "stm32_assert.h"
- #else
- #define assert_param(expr) ((void)0U)
- #endif
-
- /** @addtogroup STM32L1xx_LL_Driver
- * @{
- */
-
- #if defined (OPAMP1) || defined (OPAMP2) || defined (OPAMP3)
-
- /** @addtogroup OPAMP_LL OPAMP
- * @{
- */
-
- /* Private types -------------------------------------------------------------*/
- /* Private variables ---------------------------------------------------------*/
- /* Private constants ---------------------------------------------------------*/
- /* Private macros ------------------------------------------------------------*/
-
- /** @addtogroup OPAMP_LL_Private_Macros
- * @{
- */
-
- /* Check of parameters for configuration of OPAMP hierarchical scope: */
- /* OPAMP instance. */
-
- #define IS_LL_OPAMP_POWER_MODE(__POWER_MODE__) \
- ( ((__POWER_MODE__) == LL_OPAMP_POWERMODE_NORMAL) \
- || ((__POWER_MODE__) == LL_OPAMP_POWERMODE_LOWPOWER))
-
- #define IS_LL_OPAMP_FUNCTIONAL_MODE(__FUNCTIONAL_MODE__) \
- ( ((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_STANDALONE) \
- || ((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_FOLLOWER) \
- )
-
- /* Note: Comparator non-inverting inputs parameters are different */
- /* depending on OPAMP instance. */
- #if defined(OPAMP3)
- #define IS_LL_OPAMP_INPUT_NONINVERTING(__OPAMPX__, __INPUT_NONINVERTING__) \
- (((__OPAMPX__) == OPAMP1) \
- ? ( \
- ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO0) \
- || ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINV_DAC1_CH1) \
- ) \
- : \
- (((__OPAMPX__) == OPAMP2) \
- ? ( \
- ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO0) \
- || ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINV_DAC1_CH1) \
- || ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINV_DAC1_CH2) \
- ) \
- : \
- ( \
- ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO0) \
- || ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINV_DAC1_CH2_OPAMP3) \
- ) \
- ) \
- )
- #else
- #define IS_LL_OPAMP_INPUT_NONINVERTING(__OPAMPX__, __INPUT_NONINVERTING__) \
- (((__OPAMPX__) == OPAMP1) \
- ? ( \
- ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO0) \
- || ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINV_DAC1_CH1) \
- ) \
- : \
- ( \
- ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO0) \
- || ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINV_DAC1_CH1) \
- || ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINV_DAC1_CH2) \
- ) \
- )
- #endif
-
- /* Note: Comparator non-inverting inputs parameters are the same on all */
- /* OPAMP instances. */
- /* However, comparator instance kept as macro parameter for */
- /* compatibility with other STM32 families. */
- #define IS_LL_OPAMP_INPUT_INVERTING(__OPAMPX__, __INPUT_INVERTING__) \
- ( ((__INPUT_INVERTING__) == LL_OPAMP_INPUT_INVERT_IO0) \
- || ((__INPUT_INVERTING__) == LL_OPAMP_INPUT_INVERT_IO1) \
- || ((__INPUT_INVERTING__) == LL_OPAMP_INPUT_INVERT_CONNECT_NO) \
- )
-
- /**
- * @}
- */
-
-
- /* Private function prototypes -----------------------------------------------*/
-
- /* Exported functions --------------------------------------------------------*/
- /** @addtogroup OPAMP_LL_Exported_Functions
- * @{
- */
-
- /** @addtogroup OPAMP_LL_EF_Init
- * @{
- */
-
- /**
- * @brief De-initialize registers of the selected OPAMP instance
- * to their default reset values.
- * @param OPAMPx OPAMP instance
- * @retval An ErrorStatus enumeration value:
- * - SUCCESS: OPAMP registers are de-initialized
- * - ERROR: OPAMP registers are not de-initialized
- */
- ErrorStatus LL_OPAMP_DeInit(OPAMP_TypeDef* OPAMPx)
- {
- ErrorStatus status = SUCCESS;
-
- /* Check the parameters */
- assert_param(IS_OPAMP_ALL_INSTANCE(OPAMPx));
-
- MODIFY_REG(OPAMP->CSR,
- (OPAMP_CSR_S3SEL1 | OPAMP_CSR_S4SEL1 | OPAMP_CSR_S5SEL1 | OPAMP_CSR_S6SEL1 | OPAMP_CSR_OPA1CAL_L | OPAMP_CSR_OPA1CAL_H | OPAMP_CSR_OPA1LPM) << __OPAMP_INSTANCE_BITOFFSET(OPAMPx)
- | (OPAMP_CSR_ANAWSEL1) << __OPAMP_INSTANCE_DECIMAL(OPAMPx)
- | (OPAMP_CSR_S7SEL2 * __OPAMP_IS_INSTANCE_OPAMP2(OPAMPx)) ,
- (OPAMP_CSR_OPA1PD) << __OPAMP_INSTANCE_BITOFFSET(OPAMPx)
- );
- return status;
- }
-
- /**
- * @brief Initialize some features of OPAMP instance.
- * @note This function reset bit of calibration mode to ensure
- * to be in functional mode, in order to have OPAMP parameters
- * (inputs selection, ...) set with the corresponding OPAMP mode
- * to be effective.
- * @note This function configures features of the selected OPAMP instance.
- * Some features are also available at scope OPAMP common instance
- * (common to several OPAMP instances).
- * Refer to functions having argument "OPAMPxy_COMMON" as parameter.
- * @param OPAMPx OPAMP instance
- * @param OPAMP_InitStruct Pointer to a @ref LL_OPAMP_InitTypeDef structure
- * @retval An ErrorStatus enumeration value:
- * - SUCCESS: OPAMP registers are initialized
- * - ERROR: OPAMP registers are not initialized
- */
- ErrorStatus LL_OPAMP_Init(OPAMP_TypeDef *OPAMPx, LL_OPAMP_InitTypeDef *OPAMP_InitStruct)
- {
- /* Check the parameters */
- assert_param(IS_OPAMP_ALL_INSTANCE(OPAMPx));
- assert_param(IS_LL_OPAMP_POWER_MODE(OPAMP_InitStruct->PowerMode));
- assert_param(IS_LL_OPAMP_FUNCTIONAL_MODE(OPAMP_InitStruct->FunctionalMode));
- assert_param(IS_LL_OPAMP_INPUT_NONINVERTING(OPAMPx, OPAMP_InitStruct->InputNonInverting));
-
- /* Note: OPAMP inverting input can be used with OPAMP in mode standalone. */
- /* Otherwise (OPAMP in mode follower), OPAMP inverting input is */
- /* not used (not connected to GPIO pin). */
- if(OPAMP_InitStruct->FunctionalMode != LL_OPAMP_MODE_FOLLOWER)
- {
- assert_param(IS_LL_OPAMP_INPUT_INVERTING(OPAMPx, OPAMP_InitStruct->InputInverting));
- }
-
- /* Configuration of OPAMP instance : */
- /* - PowerMode */
- /* - Functional mode */
- /* - Input non-inverting */
- /* - Input inverting */
- /* Note: Bits OPAMP_CSR_OPAxCAL_y reset to ensure to be in functional mode */
- if(OPAMP_InitStruct->FunctionalMode != LL_OPAMP_MODE_FOLLOWER)
- {
- MODIFY_REG(OPAMP->CSR,
- ((
- OPAMP_CSR_OPA1LPM
- | OPAMP_CSR_S3SEL1
- | OPAMP_CSR_OPA1CAL_H
- | OPAMP_CSR_OPA1CAL_L
- | OPAMP_CSR_S5SEL1
- | OPAMP_CSR_S6SEL1
- | OPAMP_CSR_S4SEL1
- ) << __OPAMP_INSTANCE_BITOFFSET(OPAMPx)
- )
- | ((OPAMP_CSR_ANAWSEL1) << __OPAMP_INSTANCE_DECIMAL(OPAMPx))
- | (OPAMP_CSR_S7SEL2 * __OPAMP_IS_INSTANCE_OPAMP2(OPAMPx))
- ,
- ((
- (OPAMP_InitStruct->PowerMode & OPAMP_POWERMODE_CSR_BIT_MASK)
- | OPAMP_InitStruct->FunctionalMode
- | OPAMP_InitStruct->InputNonInverting
- | (OPAMP_InitStruct->InputInverting & OPAMP_CSR_S4SEL1)
- ) << __OPAMP_INSTANCE_BITOFFSET(OPAMPx)
- )
- | ((OPAMP_InitStruct->InputInverting & OPAMP_CSR_ANAWSEL1) << __OPAMP_INSTANCE_DECIMAL(OPAMPx))
- | ((OPAMP_InitStruct->InputNonInverting & OPAMP_CSR_S7SEL2) * __OPAMP_IS_INSTANCE_OPAMP2(OPAMPx))
- );
- }
- else
- {
- MODIFY_REG(OPAMP->CSR,
- ((
- OPAMP_CSR_OPA1LPM
- | OPAMP_CSR_OPA1CAL_H
- | OPAMP_CSR_OPA1CAL_L
- | OPAMP_CSR_S5SEL1
- | OPAMP_CSR_S6SEL1
- | OPAMP_CSR_S4SEL1
- ) << __OPAMP_INSTANCE_BITOFFSET(OPAMPx)
- )
- | ((OPAMP_CSR_ANAWSEL1) << __OPAMP_INSTANCE_DECIMAL(OPAMPx))
- | (OPAMP_CSR_S7SEL2 * __OPAMP_IS_INSTANCE_OPAMP2(OPAMPx))
- ,
- ((
- (OPAMP_InitStruct->PowerMode & OPAMP_POWERMODE_CSR_BIT_MASK)
- | OPAMP_InitStruct->FunctionalMode
- | OPAMP_InitStruct->InputNonInverting
- | OPAMP_CSR_S3SEL1
- ) << __OPAMP_INSTANCE_BITOFFSET(OPAMPx)
- )
- | ((OPAMP_InitStruct->InputNonInverting & OPAMP_CSR_S7SEL2) * __OPAMP_IS_INSTANCE_OPAMP2(OPAMPx))
- );
- }
- return SUCCESS;
- }
-
- /**
- * @brief Set each @ref LL_OPAMP_InitTypeDef field to default value.
- * @param OPAMP_InitStruct pointer to a @ref LL_OPAMP_InitTypeDef structure
- * whose fields will be set to default values.
- * @retval None
- */
- void LL_OPAMP_StructInit(LL_OPAMP_InitTypeDef *OPAMP_InitStruct)
- {
- /* Set OPAMP_InitStruct fields to default values */
- OPAMP_InitStruct->PowerMode = LL_OPAMP_POWERMODE_NORMAL;
- OPAMP_InitStruct->FunctionalMode = LL_OPAMP_MODE_FOLLOWER;
- OPAMP_InitStruct->InputNonInverting = LL_OPAMP_INPUT_NONINVERT_IO0;
- /* Note: Parameter discarded if OPAMP in functional mode follower, */
- /* set anyway to its default value. */
- OPAMP_InitStruct->InputInverting = LL_OPAMP_INPUT_INVERT_CONNECT_NO;
- }
-
- /**
- * @}
- */
-
- /**
- * @}
- */
-
- /**
- * @}
- */
-
- #endif /* OPAMP1 || OPAMP2 || OPAMP3 */
-
- /**
- * @}
- */
-
- #endif /* USE_FULL_LL_DRIVER */
-
- /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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