| /** | |
| ****************************************************************************** | |
| * @file stm32f3xx_ll_opamp.c | |
| * @author MCD Application Team | |
| * @brief OPAMP LL module driver | |
| ****************************************************************************** | |
| * @attention | |
| * | |
| * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> | |
| * | |
| * 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 "stm32f3xx_ll_opamp.h" | |
| #ifdef USE_FULL_ASSERT | |
| #include "stm32_assert.h" | |
| #else | |
| #define assert_param(expr) ((void)0U) | |
| #endif | |
| /** @addtogroup STM32F3xx_LL_Driver | |
| * @{ | |
| */ | |
| #if defined (OPAMP1) || defined (OPAMP2) || defined (OPAMP3) || defined (OPAMP4) | |
| /** @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_FUNCTIONAL_MODE(__FUNCTIONAL_MODE__) \ | |
| ( ((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_STANDALONE) \ | |
| || ((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_FOLLOWER) \ | |
| || ((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_PGA) \ | |
| ) | |
| /* 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_NONINVERTING(__OPAMPX__, __INPUT_NONINVERTING__) \ | |
| ( ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO0) \ | |
| || ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO1) \ | |
| || ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO2) \ | |
| || ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO3) \ | |
| ) | |
| /* 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. | |
| * @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 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)); | |
| /* Note: Hardware constraint (refer to description of this function): */ | |
| /* OPAMP instance must not be locked. */ | |
| if(LL_OPAMP_IsLocked(OPAMPx) == 0U) | |
| { | |
| LL_OPAMP_WriteReg(OPAMPx, CSR, 0x00000000U); | |
| } | |
| else | |
| { | |
| /* OPAMP instance is locked: de-initialization by software is */ | |
| /* not possible. */ | |
| /* The only way to unlock the OPAMP is a device hardware reset. */ | |
| status = ERROR; | |
| } | |
| 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. | |
| * @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) | |
| { | |
| ErrorStatus status = SUCCESS; | |
| /* Check the parameters */ | |
| assert_param(IS_OPAMP_ALL_INSTANCE(OPAMPx)); | |
| 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 */ | |
| /* or PGA with external capacitors for filtering circuit. */ | |
| /* 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)); | |
| } | |
| /* Note: Hardware constraint (refer to description of this function): */ | |
| /* OPAMP instance must not be locked. */ | |
| if(LL_OPAMP_IsLocked(OPAMPx) == 0U) | |
| { | |
| /* Configuration of OPAMP instance : */ | |
| /* - Functional mode */ | |
| /* - Input non-inverting */ | |
| /* - Input inverting */ | |
| /* Note: Bit OPAMP_CSR_CALON reset to ensure to be in functional mode. */ | |
| if(OPAMP_InitStruct->FunctionalMode != LL_OPAMP_MODE_FOLLOWER) | |
| { | |
| MODIFY_REG(OPAMPx->CSR, | |
| OPAMP_CSR_CALON | |
| | OPAMP_CSR_VMSEL | |
| | OPAMP_CSR_VPSEL | |
| , | |
| OPAMP_InitStruct->FunctionalMode | |
| | OPAMP_InitStruct->InputNonInverting | |
| | OPAMP_InitStruct->InputInverting | |
| ); | |
| } | |
| else | |
| { | |
| MODIFY_REG(OPAMPx->CSR, | |
| OPAMP_CSR_CALON | |
| | OPAMP_CSR_VMSEL | |
| | OPAMP_CSR_VPSEL | |
| , | |
| LL_OPAMP_MODE_FOLLOWER | |
| | OPAMP_InitStruct->InputNonInverting | |
| ); | |
| } | |
| } | |
| else | |
| { | |
| /* Initialization error: OPAMP instance is locked. */ | |
| status = ERROR; | |
| } | |
| return status; | |
| } | |
| /** | |
| * @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->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 || OPAMP4 */ | |
| /** | |
| * @} | |
| */ | |
| #endif /* USE_FULL_LL_DRIVER */ | |
| /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |