mirror of https://github.com/rene-dev/stmbl.git
255 lines
9.8 KiB
C
255 lines
9.8 KiB
C
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/**
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******************************************************************************
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* @file stm32f3xx_ll_opamp.c
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* @author MCD Application Team
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* @brief OPAMP LL module driver
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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 "stm32f3xx_ll_opamp.h"
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#ifdef USE_FULL_ASSERT
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#include "stm32_assert.h"
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#else
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#define assert_param(expr) ((void)0U)
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#endif
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/** @addtogroup STM32F3xx_LL_Driver
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* @{
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*/
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#if defined (OPAMP1) || defined (OPAMP2) || defined (OPAMP3) || defined (OPAMP4)
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/** @addtogroup OPAMP_LL OPAMP
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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 OPAMP_LL_Private_Macros
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* @{
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*/
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/* Check of parameters for configuration of OPAMP hierarchical scope: */
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/* OPAMP instance. */
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#define IS_LL_OPAMP_FUNCTIONAL_MODE(__FUNCTIONAL_MODE__) \
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( ((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_STANDALONE) \
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|| ((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_FOLLOWER) \
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|| ((__FUNCTIONAL_MODE__) == LL_OPAMP_MODE_PGA) \
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)
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/* Note: Comparator non-inverting inputs parameters are the same on all */
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/* OPAMP instances. */
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/* However, comparator instance kept as macro parameter for */
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/* compatibility with other STM32 families. */
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#define IS_LL_OPAMP_INPUT_NONINVERTING(__OPAMPX__, __INPUT_NONINVERTING__) \
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( ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO0) \
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|| ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO1) \
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|| ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO2) \
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|| ((__INPUT_NONINVERTING__) == LL_OPAMP_INPUT_NONINVERT_IO3) \
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)
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/* Note: Comparator non-inverting inputs parameters are the same on all */
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/* OPAMP instances. */
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/* However, comparator instance kept as macro parameter for */
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/* compatibility with other STM32 families. */
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#define IS_LL_OPAMP_INPUT_INVERTING(__OPAMPX__, __INPUT_INVERTING__) \
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( ((__INPUT_INVERTING__) == LL_OPAMP_INPUT_INVERT_IO0) \
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|| ((__INPUT_INVERTING__) == LL_OPAMP_INPUT_INVERT_IO1) \
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|| ((__INPUT_INVERTING__) == LL_OPAMP_INPUT_INVERT_CONNECT_NO) \
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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 OPAMP_LL_Exported_Functions
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* @{
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*/
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/** @addtogroup OPAMP_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 OPAMP 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 OPAMPx OPAMP instance
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* @retval An ErrorStatus enumeration value:
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* - SUCCESS: OPAMP registers are de-initialized
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* - ERROR: OPAMP registers are not de-initialized
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*/
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ErrorStatus LL_OPAMP_DeInit(OPAMP_TypeDef* OPAMPx)
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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_OPAMP_ALL_INSTANCE(OPAMPx));
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/* Note: Hardware constraint (refer to description of this function): */
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/* OPAMP instance must not be locked. */
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if(LL_OPAMP_IsLocked(OPAMPx) == 0U)
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{
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LL_OPAMP_WriteReg(OPAMPx, CSR, 0x00000000U);
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}
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else
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{
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/* OPAMP instance is locked: de-initialization by software is */
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/* not possible. */
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/* The only way to unlock the OPAMP is a device hardware reset. */
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status = ERROR;
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}
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return status;
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}
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/**
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* @brief Initialize some features of OPAMP instance.
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* @note This function reset bit of calibration mode to ensure
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* to be in functional mode, in order to have OPAMP parameters
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* (inputs selection, ...) set with the corresponding OPAMP mode
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* to be effective.
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* @param OPAMPx OPAMP instance
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* @param OPAMP_InitStruct Pointer to a @ref LL_OPAMP_InitTypeDef structure
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* @retval An ErrorStatus enumeration value:
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* - SUCCESS: OPAMP registers are initialized
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* - ERROR: OPAMP registers are not initialized
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*/
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ErrorStatus LL_OPAMP_Init(OPAMP_TypeDef *OPAMPx, LL_OPAMP_InitTypeDef *OPAMP_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_OPAMP_ALL_INSTANCE(OPAMPx));
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assert_param(IS_LL_OPAMP_FUNCTIONAL_MODE(OPAMP_InitStruct->FunctionalMode));
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assert_param(IS_LL_OPAMP_INPUT_NONINVERTING(OPAMPx, OPAMP_InitStruct->InputNonInverting));
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/* Note: OPAMP inverting input can be used with OPAMP in mode standalone */
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/* or PGA with external capacitors for filtering circuit. */
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/* Otherwise (OPAMP in mode follower), OPAMP inverting input is */
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/* not used (not connected to GPIO pin). */
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if(OPAMP_InitStruct->FunctionalMode != LL_OPAMP_MODE_FOLLOWER)
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{
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assert_param(IS_LL_OPAMP_INPUT_INVERTING(OPAMPx, OPAMP_InitStruct->InputInverting));
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}
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/* Note: Hardware constraint (refer to description of this function): */
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/* OPAMP instance must not be locked. */
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if(LL_OPAMP_IsLocked(OPAMPx) == 0U)
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{
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/* Configuration of OPAMP instance : */
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/* - Functional mode */
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/* - Input non-inverting */
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/* - Input inverting */
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/* Note: Bit OPAMP_CSR_CALON reset to ensure to be in functional mode. */
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if(OPAMP_InitStruct->FunctionalMode != LL_OPAMP_MODE_FOLLOWER)
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{
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MODIFY_REG(OPAMPx->CSR,
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OPAMP_CSR_CALON
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| OPAMP_CSR_VMSEL
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| OPAMP_CSR_VPSEL
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,
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OPAMP_InitStruct->FunctionalMode
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| OPAMP_InitStruct->InputNonInverting
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| OPAMP_InitStruct->InputInverting
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);
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}
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else
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{
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MODIFY_REG(OPAMPx->CSR,
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OPAMP_CSR_CALON
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| OPAMP_CSR_VMSEL
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| OPAMP_CSR_VPSEL
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,
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LL_OPAMP_MODE_FOLLOWER
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| OPAMP_InitStruct->InputNonInverting
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);
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}
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}
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else
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{
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/* Initialization error: OPAMP instance is locked. */
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status = ERROR;
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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_OPAMP_InitTypeDef field to default value.
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* @param OPAMP_InitStruct pointer to a @ref LL_OPAMP_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_OPAMP_StructInit(LL_OPAMP_InitTypeDef *OPAMP_InitStruct)
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{
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/* Set OPAMP_InitStruct fields to default values */
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OPAMP_InitStruct->FunctionalMode = LL_OPAMP_MODE_FOLLOWER;
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OPAMP_InitStruct->InputNonInverting = LL_OPAMP_INPUT_NONINVERT_IO0;
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/* Note: Parameter discarded if OPAMP in functional mode follower, */
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/* set anyway to its default value. */
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OPAMP_InitStruct->InputInverting = LL_OPAMP_INPUT_INVERT_CONNECT_NO;
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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 /* OPAMP1 || OPAMP2 || OPAMP3 || OPAMP4 */
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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 STMicroelectronics *****END OF FILE****/
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