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Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_hal_opamp.c
- Revision:
- 394:83f921546702
- Parent:
- 393:17d2d502961d
- Child:
- 395:bfce16e86ea4
--- a/targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_hal_opamp.c Fri Nov 07 12:00:11 2014 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,1004 +0,0 @@
-/**
- ******************************************************************************
- * @file stm32l1xx_hal_opamp.c
- * @author MCD Application Team
- * @version V1.0.0
- * @date 5-September-2014
- * @brief OPAMP HAL module driver.
- *
- * This file provides firmware functions to manage the following
- * functionalities of the operational amplifiers (OPAMP1 ,... ,OPAMP3)
- * peripheral:
- * + OPAMP configuration
- * + OPAMP calibration
- *
- * Thanks to
- * + Initialization and de-initialization functions
- * + IO operation functions
- * + Peripheral Control functions
- * + Peripheral State functions
- *
- @verbatim
-================================================================================
- ##### OPAMP Peripheral Features #####
-================================================================================
-
- [..] The device integrates up to 3 operational amplifiers OPAMP1, OPAMP2,
- OPAMP3 (OPAMP3 availability depends on device category)
-
- (#) The OPAMP(s) provides several exclusive running modes.
- (+) Standalone mode
- (+) Follower mode
-
- (#) The OPAMP(s) provide(s) calibration capabilities.
- (+) Calibration aims at correcting some offset for running mode.
- (+) The OPAMP uses either factory calibration settings OR user defined
- calibration (trimming) settings (i.e. trimming mode).
- (+) The user defined settings can be figured out using self calibration
- handled by HAL_OPAMP_SelfCalibrate, HAL_OPAMPEx_SelfCalibrateAll
- (+) HAL_OPAMP_SelfCalibrate:
- (++) Runs automatically the calibration in 2 steps: for transistors
- differential pair high (PMOS) or low (NMOS)
- (++) Enables the user trimming mode
- (++) Updates the init structure with trimming values with fresh calibration
- results.
- The user may store the calibration results for larger
- (ex monitoring the trimming as a function of temperature
- for instance)
- (++) for devices having several OPAMPs, HAL_OPAMPEx_SelfCalibrateAll
- runs calibration of all OPAMPs in parallel to save trimming search
- wait time.
-
- (#) Running mode: Standalone mode
- (+) Gain is set externally (gain depends on external loads).
- (+) Follower mode also possible externally by connecting the inverting input to
- the output.
-
- (#) Running mode: Follower mode
- (+) No Inverting Input is connected.
- (+) The OPAMP(s) output(s) are internally connected to inverting input
-
- (#) The OPAMPs inverting input can be selected among the list shown
- in table below.
-
- (#) The OPAMPs non inverting input can be selected among the list shown
- in table below.
-
- [..] Table 1. OPAMPs inverting/non-inverting inputs for STM32L1 devices:
-
- +--------------------------------------------------------------------------+
- | | HAL param | OPAMP1 | OPAMP2 | OPAMP3(4) |
- | | name | | | |
- |----------------|------------|--------------|--------------|--------------|
- | Inverting | VM0 | PA2 | PA7 | PC2 |
- | input (1) | VM1 | VINM pin (2) | VINM pin (2) | VINM pin (2) |
- |----------------|------------|--------------|--------------|--------------|
- | Non Inverting | VP0 | PA1 | PA6 | PC1 |
- | input | DAC_CH1 (3)| DAC_CH1 | DAC_CH1 | --- |
- | | DAC_CH2 (3)| --- | DAC_CH2 | DAC_CH2 |
- +--------------------------------------------------------------------------+
- (1): NA in follower mode.
- (2): OPAMP input OPAMPx_VINM are dedicated OPAMP pins, their availability
- depends on device package.
- (3): DAC channels 1 and 2 are connected internally to OPAMP. Nevertheless,
- I/O pins connected to DAC can still be used as DAC output (pins PA4
- and PA5).
- (4): OPAMP3 availability depends on device category.
-
-
- [..] Table 2. OPAMPs outputs for STM32L1 devices:
-
- +--------------------------------------------------------+
- | | OPAMP1 | OPAMP2 | OPAMP3(4) |
- |-----------------|------------|------------|------------|
- | Output | PA3 | PB0 | PC3 |
- +--------------------------------------------------------+
- (4) : OPAMP3 availability depends on device category
-
-
- ##### How to use this driver #####
-================================================================================
- [..]
-
- *** Calibration ***
- ============================================
- To run the opamp calibration self calibration:
-
- (#) Start calibration using HAL_OPAMP_SelfCalibrate.
- Store the calibration results.
-
- *** Running mode ***
- ============================================
-
- To use the opamp, perform the following steps:
-
- (#) Fill in the HAL_OPAMP_MspInit() to
- (+) Enable the OPAMP Peripheral clock using macro "__OPAMP_CLK_ENABLE()"
- (++) Configure the opamp input AND output in analog mode using
- HAL_GPIO_Init() to map the opamp output to the GPIO pin.
-
- (#) Configure the opamp using HAL_OPAMP_Init() function:
- (+) Select the mode
- (+) Select the inverting input
- (+) Select the non-inverting input
- (+) Select either factory or user defined trimming mode.
- (+) If the user defined trimming mode is enabled, select PMOS & NMOS trimming values
- (typ. settings returned by HAL_OPAMP_SelfCalibrate function).
-
- (#) Enable the opamp using HAL_OPAMP_Start() function.
-
- (#) Disable the opamp using HAL_OPAMP_Stop() function.
-
- (#) Lock the opamp in running mode using HAL_OPAMP_Lock() function.
- Caution: On STM32L1, HAL OPAMP lock is software lock only (not
- hardware lock as on some other STM32 devices)
-
- (#) If needed, unlock the opamp using HAL_OPAMPEx_Unlock() function.
-
- *** Running mode: change of configuration while OPAMP ON ***
- ============================================
- To Re-configure OPAMP when OPAMP is ON (change on the fly)
- (#) If needed, Fill in the HAL_OPAMP_MspInit()
- (+) This is the case for instance if you wish to use new OPAMP I/O
-
- (#) Configure the opamp using HAL_OPAMP_Init() function:
- (+) As in configure case, selects first the parameters you wish to modify.
-
- @endverbatim
- ******************************************************************************
- * @attention
- *
- * <h2><center>© COPYRIGHT(c) 2014 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.
- *
- ******************************************************************************
- */
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32l1xx_hal.h"
-
-/** @addtogroup STM32L1xx_HAL_Driver
- * @{
- */
-
-/** @defgroup OPAMP OPAMP
- * @brief OPAMP HAL module driver
- * @{
- */
-
-#ifdef HAL_OPAMP_MODULE_ENABLED
-
-#if defined (STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined (STM32L151xE) || defined (STM32L152xE) || defined (STM32L162xE) || defined (STM32L162xC) || defined (STM32L152xC) || defined (STM32L151xC)
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/* Private functions ---------------------------------------------------------*/
-
-/** @defgroup OPAMP_Exported_Functions OPAMP Exported Functions
- * @{
- */
-
-/** @defgroup OPAMP_Exported_Functions_Group1 Initialization and de-initialization functions
- * @brief Initialization and Configuration functions
- *
-@verbatim
- ===============================================================================
- ##### Initialization and de-initialization functions #####
- ===============================================================================
- [..] This section provides functions allowing to:
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Initializes the OPAMP according to the specified
- * parameters in the OPAMP_InitTypeDef and create the associated handle.
- * @note If the selected opamp is locked, initialization can't be performed.
- * To unlock the configuration, perform a system reset.
- * @param hopamp: OPAMP handle
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_OPAMP_Init(OPAMP_HandleTypeDef* hopamp)
-{
- HAL_StatusTypeDef status = HAL_OK;
- uint32_t tmp_csr = 0; /* Temporary variable to update register CSR, except bits ANAWSSELx, S7SEL2, OPA_RANGE, OPAxCALOUT */
-
- /* Check the OPAMP handle allocation and lock status */
- /* Init not allowed if calibration is ongoing */
- if((hopamp == HAL_NULL) || (hopamp->State == HAL_OPAMP_STATE_BUSYLOCKED)
- || (hopamp->State == HAL_OPAMP_STATE_CALIBBUSY) )
- {
- status = HAL_ERROR;
- }
- else
- {
- /* Check the parameter */
- assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance));
-
- /* Set OPAMP parameters */
- assert_param(IS_OPAMP_FUNCTIONAL_NORMALMODE(hopamp->Init.Mode));
- assert_param(IS_OPAMP_NONINVERTING_INPUT(hopamp->Init.NonInvertingInput));
- assert_param(IS_OPAMP_POWERMODE(hopamp->Init.PowerMode));
- assert_param(IS_OPAMP_POWER_SUPPLY_RANGE(hopamp->Init.PowerSupplyRange));
- assert_param(IS_OPAMP_TRIMMING(hopamp->Init.UserTrimming));
-
- if (hopamp->Init.Mode != OPAMP_FOLLOWER_MODE)
- {
- assert_param(IS_OPAMP_INVERTING_INPUT(hopamp->Init.InvertingInput));
- }
-
- if (hopamp->Init.UserTrimming == OPAMP_TRIMMING_USER)
- {
- if (hopamp->Init.PowerMode == OPAMP_POWERMODE_NORMAL)
- {
- assert_param(IS_OPAMP_TRIMMINGVALUE(hopamp->Init.TrimmingValueP));
- assert_param(IS_OPAMP_TRIMMINGVALUE(hopamp->Init.TrimmingValueN));
- }
- else
- {
- assert_param(IS_OPAMP_TRIMMINGVALUE(hopamp->Init.TrimmingValuePLowPower));
- assert_param(IS_OPAMP_TRIMMINGVALUE(hopamp->Init.TrimmingValueNLowPower));
- }
- }
-
- /* Call MSP init function */
- HAL_OPAMP_MspInit(hopamp);
-
-
- /* Set OPAMP parameters */
- /* - Set internal switches in function of: */
- /* - OPAMP selected mode: standalone or follower. */
- /* - Non-inverting input connection */
- /* - Inverting input connection */
- /* - Set power supply range */
- /* - Set power mode and associated calibration parameters */
-
- /* Get OPAMP CSR register into temporary variable */
- tmp_csr = OPAMP->CSR;
-
- /* Open all switches on non-inverting input, inverting input and output */
- /* feedback. */
- CLEAR_BIT(tmp_csr, __OPAMP_CSR_ALL_SWITCHES(hopamp));
-
- /* Set internal switches in function of OPAMP mode selected: standalone */
- /* or follower. */
- /* If follower mode is selected, feedback switch S3 is closed and */
- /* inverting inputs switches are let opened. */
- /* If standalone mode is selected, feedback switch S3 is let opened and */
- /* the selected inverting inputs switch is closed. */
- if (hopamp->Init.Mode == OPAMP_FOLLOWER_MODE)
- {
- /* Follower mode: Close switches S3 and SanB */
- SET_BIT(tmp_csr, __OPAMP_CSR_S3SELX(hopamp));
- }
- else
- {
- /* Set internal switches in function of inverting input selected: */
- /* Close switch to connect comparator inverting input to the selected */
- /* input: dedicated IO pin or alternative IO pin available on some */
- /* device packages. */
- if (hopamp->Init.InvertingInput == OPAMP_INVERTINGINPUT_VM0)
- {
- /* Close switch to connect comparator non-inverting input to */
- /* dedicated IO pin low-leakage. */
- SET_BIT(tmp_csr, __OPAMP_CSR_S4SELX(hopamp));
- }
- else
- {
- /* Close switch to connect comparator inverting input to alternative */
- /* IO pin available on some device packages. */
- SET_BIT(tmp_csr, __OPAMP_CSR_ANAWSELX(hopamp));
- }
- }
-
- /* Set internal switches in function of non-inverting input selected: */
- /* Close switch to connect comparator non-inverting input to the selected */
- /* input: dedicated IO pin or DAC channel. */
- if (hopamp->Init.NonInvertingInput == OPAMP_NONINVERTINGINPUT_VP0)
- {
- /* Close switch to connect comparator non-inverting input to */
- /* dedicated IO pin low-leakage. */
- SET_BIT(tmp_csr, __OPAMP_CSR_S5SELX(hopamp));
- }
- else if (hopamp->Init.NonInvertingInput == OPAMP_NONINVERTINGINPUT_DAC_CH1)
- {
-
- /* Particular case for connection to DAC channel 1: */
- /* OPAMP_NONINVERTINGINPUT_DAC_CH1 available on OPAMP1 and OPAMP2 only */
- /* (OPAMP3 availability depends on device category). */
- if ((hopamp->Instance == OPAMP1) || (hopamp->Instance == OPAMP2))
- {
- /* Close switch to connect comparator non-inverting input to */
- /* DAC channel 1. */
- SET_BIT(tmp_csr, __OPAMP_CSR_S6SELX(hopamp));
- }
- else
- {
- /* Set HAL status to error if another OPAMP instance as OPAMP1 or */
- /* OPAMP2 is intended to be connected to DAC channel 2. */
- status = HAL_ERROR;
- }
- }
- else /* if (hopamp->Init.NonInvertingInput == */
- /* OPAMP_NONINVERTINGINPUT_DAC_CH2 ) */
- {
- /* Particular case for connection to DAC channel 2: */
- /* OPAMP_NONINVERTINGINPUT_DAC_CH2 available on OPAMP2 and OPAMP3 only */
- /* (OPAMP3 availability depends on device category). */
- if (hopamp->Instance == OPAMP2)
- {
- /* Close switch to connect comparator non-inverting input to */
- /* DAC channel 2. */
- SET_BIT(tmp_csr, OPAMP_CSR_S7SEL2);
- }
- /* If OPAMP3 is selected (if available) */
- else if (hopamp->Instance != OPAMP1)
- {
- /* Close switch to connect comparator non-inverting input to */
- /* DAC channel 2. */
- SET_BIT(tmp_csr, __OPAMP_CSR_S6SELX(hopamp));
- }
- else
- {
- /* Set HAL status to error if another OPAMP instance as OPAMP2 or */
- /* OPAMP3 (if available) is intended to be connected to DAC channel 2.*/
- status = HAL_ERROR;
- }
- }
-
- /* Continue OPAMP configuration if settings of switches are correct */
- if (status != HAL_ERROR)
- {
- /* Set power mode and associated calibration parameters */
- if (hopamp->Init.PowerMode != OPAMP_POWERMODE_LOWPOWER)
- {
- /* Set normal mode */
- CLEAR_BIT(tmp_csr, __OPAMP_CSR_OPAXLPM(hopamp));
-
- if (hopamp->Init.UserTrimming == OPAMP_TRIMMING_USER)
- {
- /* Set calibration mode (factory or user) and values for */
- /* transistors differential pair high (PMOS) and low (NMOS) for */
- /* normal mode. */
- MODIFY_REG(OPAMP->OTR, OPAMP_OTR_OT_USER |
- __OPAMP_OFFSET_TRIM_SET(hopamp, OPAMP_FACTORYTRIMMING_N, OPAMP_TRIM_VALUE_MASK) |
- __OPAMP_OFFSET_TRIM_SET(hopamp, OPAMP_FACTORYTRIMMING_P, OPAMP_TRIM_VALUE_MASK) ,
- hopamp->Init.UserTrimming |
- __OPAMP_OFFSET_TRIM_SET(hopamp, OPAMP_FACTORYTRIMMING_N, hopamp->Init.TrimmingValueN) |
- __OPAMP_OFFSET_TRIM_SET(hopamp, OPAMP_FACTORYTRIMMING_P, hopamp->Init.TrimmingValueP) );
- }
- else
- {
- /* Set calibration mode to factory */
- CLEAR_BIT(OPAMP->OTR, OPAMP_OTR_OT_USER);
- }
-
- }
- else
- {
- /* Set low power mode */
- SET_BIT(tmp_csr, __OPAMP_CSR_OPAXLPM(hopamp));
-
- if (hopamp->Init.UserTrimming == OPAMP_TRIMMING_USER)
- {
- /* Set calibration mode to user trimming */
- SET_BIT(OPAMP->OTR, OPAMP_OTR_OT_USER);
-
- /* Set values for transistors differential pair high (PMOS) and low */
- /* (NMOS) for low power mode. */
- MODIFY_REG(OPAMP->LPOTR, __OPAMP_OFFSET_TRIM_SET(hopamp, OPAMP_FACTORYTRIMMING_N, OPAMP_TRIM_VALUE_MASK) |
- __OPAMP_OFFSET_TRIM_SET(hopamp, OPAMP_FACTORYTRIMMING_P, OPAMP_TRIM_VALUE_MASK) ,
- __OPAMP_OFFSET_TRIM_SET(hopamp, OPAMP_FACTORYTRIMMING_N, hopamp->Init.TrimmingValueNLowPower) |
- __OPAMP_OFFSET_TRIM_SET(hopamp, OPAMP_FACTORYTRIMMING_P, hopamp->Init.TrimmingValuePLowPower) );
- }
- else
- {
- /* Set calibration mode to factory trimming */
- CLEAR_BIT(OPAMP->OTR, OPAMP_OTR_OT_USER);
- }
-
- }
-
-
- /* Configure the power supply range */
- MODIFY_REG(tmp_csr, OPAMP_CSR_AOP_RANGE,
- hopamp->Init.PowerSupplyRange);
-
- /* Set OPAMP CSR register from temporary variable */
- /* This allows to apply all changes on one time, in case of update on */
- /* the fly with OPAMP previously set and running: */
- /* - to avoid hazardous transient switches settings (risk of short */
- /* circuit) */
- /* - to avoid interruption of input signal */
- OPAMP->CSR = tmp_csr;
-
-
- /* Update the OPAMP state */
- /* If coming from state reset: Update from state RESET to state READY */
- /* else: remain in state READY or BUSY (no update) */
- if (hopamp->State == HAL_OPAMP_STATE_RESET)
- {
- hopamp->State = HAL_OPAMP_STATE_READY;
- }
- }
- }
-
- return status;
-}
-
-
-/**
- * @brief DeInitializes the OPAMP peripheral
- * @note Deinitialization can't be performed if the OPAMP configuration is locked.
- * To unlock the configuration, perform a system reset.
- * @param hopamp: OPAMP handle
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_OPAMP_DeInit(OPAMP_HandleTypeDef* hopamp)
-{
- HAL_StatusTypeDef status = HAL_OK;
-
- /* Check the OPAMP handle allocation */
- /* Check if OPAMP locked */
- /* DeInit not allowed if calibration is ongoing */
- if((hopamp == HAL_NULL) || (hopamp->State == HAL_OPAMP_STATE_BUSYLOCKED) \
- || (hopamp->State == HAL_OPAMP_STATE_CALIBBUSY))
- {
- status = HAL_ERROR;
- }
- else
- {
-
- /* Check the parameter */
- assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance));
-
- /* Open all switches on non-inverting input, inverting input and output */
- /* feedback. */
- CLEAR_BIT(OPAMP->CSR, __OPAMP_CSR_ALL_SWITCHES(hopamp));
-
- /* DeInit the low level hardware */
- HAL_OPAMP_MspDeInit(hopamp);
-
- /* Update the OPAMP state*/
- hopamp->State = HAL_OPAMP_STATE_RESET;
- }
-
- /* Process unlocked */
- __HAL_UNLOCK(hopamp);
-
- return status;
-}
-
-
-/**
- * @brief Initializes the OPAMP MSP.
- * @param hopamp: OPAMP handle
- * @retval None
- */
-__weak void HAL_OPAMP_MspInit(OPAMP_HandleTypeDef* hopamp)
-{
- /* NOTE : This function Should not be modified, when the callback is needed,
- the function "HAL_OPAMP_MspInit()" must be implemented in the user file.
- */
-}
-
-/**
- * @brief DeInitializes OPAMP MSP.
- * @param hopamp: OPAMP handle
- * @retval None
- */
-__weak void HAL_OPAMP_MspDeInit(OPAMP_HandleTypeDef* hopamp)
-{
- /* NOTE : This function Should not be modified, when the callback is needed,
- the function "HAL_OPAMP_MspDeInit()" must be implemented in the user file.
- */
-}
-
-/**
- * @}
- */
-
-
-/** @defgroup OPAMP_Exported_Functions_Group2 IO operation functions
- * @brief IO operation functions
- *
-@verbatim
- ===============================================================================
- ##### IO operation functions #####
- ===============================================================================
- [..]
- This subsection provides a set of functions allowing to manage the OPAMP
- start, stop and calibration actions.
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Start the opamp
- * @param hopamp: OPAMP handle
- * @retval HAL status
- */
-
-HAL_StatusTypeDef HAL_OPAMP_Start(OPAMP_HandleTypeDef* hopamp)
-{
- HAL_StatusTypeDef status = HAL_OK;
-
- /* Check the OPAMP handle allocation */
- /* Check if OPAMP locked */
- if((hopamp == HAL_NULL) || (hopamp->State == HAL_OPAMP_STATE_BUSYLOCKED))
- {
- status = HAL_ERROR;
- }
- else
- {
- /* Check the parameter */
- assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance));
-
- if(hopamp->State == HAL_OPAMP_STATE_READY)
- {
- /* Enable the selected opamp */
- CLEAR_BIT (OPAMP->CSR, __OPAMP_CSR_OPAXPD(hopamp));
-
- /* Update the OPAMP state */
- /* From HAL_OPAMP_STATE_READY to HAL_OPAMP_STATE_BUSY */
- hopamp->State = HAL_OPAMP_STATE_BUSY;
- }
- else
- {
- status = HAL_ERROR;
- }
-
- }
- return status;
-}
-
-/**
- * @brief Stop the opamp
- * @param hopamp: OPAMP handle
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_OPAMP_Stop(OPAMP_HandleTypeDef* hopamp)
-{
- HAL_StatusTypeDef status = HAL_OK;
-
- /* Check the OPAMP handle allocation */
- /* Check if OPAMP locked */
- /* Check if OPAMP calibration ongoing */
- if((hopamp == HAL_NULL) || (hopamp->State == HAL_OPAMP_STATE_BUSYLOCKED) \
- || (hopamp->State == HAL_OPAMP_STATE_CALIBBUSY))
- {
- status = HAL_ERROR;
- }
- else
- {
- /* Check the parameter */
- assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance));
-
- if(hopamp->State == HAL_OPAMP_STATE_BUSY)
- {
- /* Disable the selected opamp */
- SET_BIT (OPAMP->CSR, __OPAMP_CSR_OPAXPD(hopamp));
-
- /* Update the OPAMP state*/
- /* From HAL_OPAMP_STATE_BUSY to HAL_OPAMP_STATE_READY*/
- hopamp->State = HAL_OPAMP_STATE_READY;
- }
- else
- {
- status = HAL_ERROR;
- }
- }
- return status;
-}
-
-/**
- * @brief Run the self calibration of one OPAMP
- * @note Trimming values (PMOS & NMOS) are updated and user trimming is
- * enabled is calibration is succesful.
- * @note Calibration is performed in the mode specified in OPAMP init
- * structure (mode normal or low-power). To perform calibration for
- * both modes, repeat this function twice after OPAMP init structure
- * accordingly updated.
- * @note Calibration runs about 10 ms (5 dichotmy steps, repeated for P
- * and N transistors: 10 steps with 1 ms for each step).
- * @param hopamp: handle
- * @retval Updated offset trimming values (PMOS & NMOS), user trimming is enabled
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_OPAMP_SelfCalibrate(OPAMP_HandleTypeDef* hopamp)
-{
- HAL_StatusTypeDef status = HAL_OK;
-
- uint32_t* opamp_trimmingvalue = 0;
- uint32_t opamp_trimmingvaluen = 0;
- uint32_t opamp_trimmingvaluep = 0;
-
- uint32_t trimming_diff_pair = 0; /* Selection of differential transistors pair high or low */
-
- __IO uint32_t* tmp_opamp_reg_trimming; /* Selection of register of trimming depending on power mode: OTR or LPOTR */
- uint32_t tmp_opamp_otr_otuser = 0; /* Selection of bit OPAMP_OTR_OT_USER depending on trimming register pointed: OTR or LPOTR */
-
- uint32_t tmp_Opaxcalout_DefaultSate = 0; /* Bit OPAMP_CSR_OPAXCALOUT default state when trimming value is 00000b. Used to detect the bit toggling */
-
- uint32_t tmp_OpaxSwitchesContextBackup = 0;
-
- uint8_t trimming_diff_pair_iteration_count = 0;
- uint8_t delta = 0;
-
-
- /* Check the OPAMP handle allocation */
- /* Check if OPAMP locked */
- if((hopamp == HAL_NULL) || (hopamp->State == HAL_OPAMP_STATE_BUSYLOCKED))
- {
- status = HAL_ERROR;
- }
- else
- {
-
- /* Check if OPAMP in calibration mode and calibration not yet enable */
- if(hopamp->State == HAL_OPAMP_STATE_READY)
- {
- /* Check the parameter */
- assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance));
- assert_param(IS_OPAMP_POWERMODE(hopamp->Init.PowerMode));
-
- /* Update OPAMP state */
- hopamp->State = HAL_OPAMP_STATE_CALIBBUSY;
-
- /* Backup of switches configuration to restore it at the end of the */
- /* calibration. */
- tmp_OpaxSwitchesContextBackup = READ_BIT(OPAMP->CSR, __OPAMP_CSR_ALL_SWITCHES(hopamp));
-
- /* Open all switches on non-inverting input, inverting input and output */
- /* feedback. */
- CLEAR_BIT(OPAMP->CSR, __OPAMP_CSR_ALL_SWITCHES(hopamp));
-
- /* Set calibration mode to user programmed trimming values */
- SET_BIT(OPAMP->OTR, OPAMP_OTR_OT_USER);
-
-
- /* Select trimming settings depending on power mode */
- if (hopamp->Init.PowerMode == OPAMP_POWERMODE_NORMAL)
- {
- tmp_opamp_otr_otuser = OPAMP_OTR_OT_USER;
- tmp_opamp_reg_trimming = &OPAMP->OTR;
- }
- else
- {
- tmp_opamp_otr_otuser = 0x00000000;
- tmp_opamp_reg_trimming = &OPAMP->LPOTR;
- }
-
-
- /* Enable the selected opamp */
- CLEAR_BIT (OPAMP->CSR, __OPAMP_CSR_OPAXPD(hopamp));
-
- /* Perform trimming for both differential transistors pair high and low */
- for (trimming_diff_pair_iteration_count = 0; trimming_diff_pair_iteration_count <=1; trimming_diff_pair_iteration_count++)
- {
- if (trimming_diff_pair_iteration_count == 0)
- {
- /* Calibration of transistors differential pair high (NMOS) */
- trimming_diff_pair = OPAMP_FACTORYTRIMMING_N;
- opamp_trimmingvalue = &opamp_trimmingvaluen;
-
- /* Set bit OPAMP_CSR_OPAXCALOUT default state when trimming value */
- /* is 00000b. Used to detect the bit toggling during trimming. */
- tmp_Opaxcalout_DefaultSate = RESET;
-
- /* Enable calibration for N differential pair */
- MODIFY_REG(OPAMP->CSR, __OPAMP_CSR_OPAXCAL_L(hopamp),
- __OPAMP_CSR_OPAXCAL_H(hopamp) );
- }
- else /* (trimming_diff_pair_iteration_count == 1) */
- {
- /* Calibration of transistors differential pair low (PMOS) */
- trimming_diff_pair = OPAMP_FACTORYTRIMMING_P;
- opamp_trimmingvalue = &opamp_trimmingvaluep;
-
- /* Set bit OPAMP_CSR_OPAXCALOUT default state when trimming value */
- /* is 00000b. Used to detect the bit toggling during trimming. */
- tmp_Opaxcalout_DefaultSate = __OPAMP_CSR_OPAXCALOUT(hopamp);
-
- /* Enable calibration for P differential pair */
- MODIFY_REG(OPAMP->CSR, __OPAMP_CSR_OPAXCAL_H(hopamp),
- __OPAMP_CSR_OPAXCAL_L(hopamp) );
- }
-
-
- /* Perform calibration parameter search by dichotomy sweep */
- /* - Delta initial value 16: for 5 dichotomy steps: 16 for the */
- /* initial range, then successive delta sweeps (8, 4, 2, 1). */
- /* can extend the search range to +/- 15 units. */
- /* - Trimming initial value 15: search range will go from 0 to 30 */
- /* (Trimming value 31 is forbidden). */
- *opamp_trimmingvalue = 15;
- delta = 16;
-
- while (delta != 0)
- {
- /* Set candidate trimming */
- MODIFY_REG(*tmp_opamp_reg_trimming, __OPAMP_OFFSET_TRIM_SET(hopamp, trimming_diff_pair, OPAMP_TRIM_VALUE_MASK) ,
- __OPAMP_OFFSET_TRIM_SET(hopamp, trimming_diff_pair, *opamp_trimmingvalue) | tmp_opamp_otr_otuser);
-
- /* Offset trimming time: during calibration, minimum time needed */
- /* between two steps to have 1 mV accuracy. */
- HAL_Delay(OPAMP_TRIMMING_DELAY);
-
- /* Divide range by 2 to continue dichotomy sweep */
- delta >>= 1;
-
- /* Set trimming values for next iteration in function of trimming */
- /* result toggle (versus initial state). */
- if (READ_BIT(OPAMP->CSR, __OPAMP_CSR_OPAXCALOUT(hopamp)) != tmp_Opaxcalout_DefaultSate)
- {
- /* If calibration output is has toggled, try lower trimming */
- *opamp_trimmingvalue -= delta;
- }
- else
- {
- /* If calibration output is has not toggled, try higher trimming */
- *opamp_trimmingvalue += delta;
- }
- }
-
- }
-
- /* Disable calibration for P and N differential pairs */
- /* Disable the selected opamp */
- CLEAR_BIT (OPAMP->CSR, (__OPAMP_CSR_OPAXCAL_H(hopamp) |
- __OPAMP_CSR_OPAXCAL_L(hopamp) |
- __OPAMP_CSR_OPAXPD(hopamp)) );
-
- /* Backup of switches configuration to restore it at the end of the */
- /* calibration. */
- SET_BIT(OPAMP->CSR, tmp_OpaxSwitchesContextBackup);
-
- /* Self calibration is successful */
- /* Store calibration (user trimming) results in init structure. */
-
- /* Set user trimming mode */
- hopamp->Init.UserTrimming = OPAMP_TRIMMING_USER;
-
- /* Affect calibration parameters depending on mode normal/low power */
- if (hopamp->Init.PowerMode != OPAMP_POWERMODE_LOWPOWER)
- {
- /* Write calibration result N */
- hopamp->Init.TrimmingValueN = opamp_trimmingvaluen;
- /* Write calibration result P */
- hopamp->Init.TrimmingValueP = opamp_trimmingvaluep;
- }
- else
- {
- /* Write calibration result N */
- hopamp->Init.TrimmingValueNLowPower = opamp_trimmingvaluen;
- /* Write calibration result P */
- hopamp->Init.TrimmingValuePLowPower = opamp_trimmingvaluep;
- }
-
- /* Update OPAMP state */
- hopamp->State = HAL_OPAMP_STATE_READY;
-
- }
- else
- {
- /* OPAMP can not be calibrated from this mode */
- status = HAL_ERROR;
- }
- }
-
- return status;
-}
-
-/**
- * @brief Return the OPAMP factory trimming value
- * Caution: On STM32L1 OPAMP, user can retrieve factory trimming if
- * OPAMP has never been set to user trimming before.
- * Therefore, this fonction must be called when OPAMP init
- * parameter "UserTrimming" is set to trimming factory,
- * and before OPAMP calibration (function
- * "HAL_OPAMP_SelfCalibrate()").
- * Otherwise, factory triming value cannot be retrieved and
- * error status is returned.
- * @param hopamp : OPAMP handle
- * @param trimmingoffset : Trimming offset (P or N)
- * This parameter must be a value of @ref OPAMP_FactoryTrimming
- * @note Calibration parameter retrieved is corresponding to the mode
- * specified in OPAMP init structure (mode normal or low-power).
- * To retrieve calibration parameters for both modes, repeat this
- * function after OPAMP init structure accordingly updated.
- * @retval Trimming value (P or N): range: 0->31
- * or OPAMP_FACTORYTRIMMING_DUMMY if trimming value is not available
- * @{
- */
-OPAMP_TrimmingValueTypeDef HAL_OPAMP_GetTrimOffset (OPAMP_HandleTypeDef *hopamp, uint32_t trimmingoffset)
-{
- OPAMP_TrimmingValueTypeDef trimmingvalue;
- __IO uint32_t* tmp_opamp_reg_trimming; /* Selection of register of trimming depending on power mode: OTR or LPOTR */
-
- /* Check the OPAMP handle allocation */
- /* Value can be retrieved in HAL_OPAMP_STATE_READY state */
- if((hopamp == HAL_NULL) || (hopamp->State == HAL_OPAMP_STATE_RESET)
- || (hopamp->State == HAL_OPAMP_STATE_BUSY)
- || (hopamp->State == HAL_OPAMP_STATE_CALIBBUSY)
- || (hopamp->State == HAL_OPAMP_STATE_BUSYLOCKED))
- {
- trimmingvalue = OPAMP_FACTORYTRIMMING_DUMMY;
- }
- else
- {
- /* Check the parameter */
- assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance));
- assert_param(IS_OPAMP_FACTORYTRIMMING(trimmingoffset));
- assert_param(IS_OPAMP_POWERMODE(hopamp->Init.PowerMode));
-
- /* Check the trimming mode */
- if (hopamp->Init.UserTrimming == OPAMP_TRIMMING_USER)
- {
- /* This fonction must called when OPAMP init parameter "UserTrimming" */
- /* is set to trimming factory, and before OPAMP calibration (function */
- /* "HAL_OPAMP_SelfCalibrate()"). */
- /* Otherwise, factory triming value cannot be retrieved and error */
- /* status is returned. */
- trimmingvalue = OPAMP_FACTORYTRIMMING_DUMMY;
- }
- else
- {
- /* Select trimming settings depending on power mode */
- if (hopamp->Init.PowerMode == OPAMP_POWERMODE_NORMAL)
- {
- tmp_opamp_reg_trimming = &OPAMP->OTR;
- }
- else
- {
- tmp_opamp_reg_trimming = &OPAMP->LPOTR;
- }
-
- /* Get factory trimming */
- trimmingvalue = ((*tmp_opamp_reg_trimming >> __OPAMP_OFFSET_TRIM_BITSPOSITION(hopamp, trimmingoffset)) & OPAMP_TRIM_VALUE_MASK);
- }
- }
-
- return trimmingvalue;
-}
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/** @defgroup OPAMP_Exported_Functions_Group3 Peripheral Control functions
- * @brief Peripheral Control functions
- *
-@verbatim
- ===============================================================================
- ##### Peripheral Control functions #####
- ===============================================================================
- [..]
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Lock the selected opamp configuration.
- * Caution: On STM32L1, HAL OPAMP lock is software lock only (not
- * hardware lock as on some other STM32 devices)
- * @param hopamp: OPAMP handle
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_OPAMP_Lock(OPAMP_HandleTypeDef* hopamp)
-{
- HAL_StatusTypeDef status = HAL_OK;
-
- /* Check the OPAMP handle allocation */
- /* Check if OPAMP locked */
- /* OPAMP can be locked when enabled and running in normal mode */
- /* It is meaningless otherwise */
- if((hopamp == HAL_NULL) || (hopamp->State == HAL_OPAMP_STATE_RESET) \
- || (hopamp->State == HAL_OPAMP_STATE_READY) \
- || (hopamp->State == HAL_OPAMP_STATE_CALIBBUSY)\
- || (hopamp->State == HAL_OPAMP_STATE_BUSYLOCKED))
-
- {
- status = HAL_ERROR;
- }
-
- else
- {
- /* Check the parameter */
- assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance));
-
- /* OPAMP state changed to locked */
- hopamp->State = HAL_OPAMP_STATE_BUSYLOCKED;
- }
- return status;
-}
-
-/**
- * @}
- */
-
-
-/** @defgroup OPAMP_Exported_Functions_Group4 Peripheral State functions
- * @brief Peripheral State functions
- *
-@verbatim
- ===============================================================================
- ##### Peripheral State functions #####
- ===============================================================================
- [..]
- This subsection permit to get in run-time the status of the peripheral.
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Return the OPAMP state
- * @param hopamp : OPAMP handle
- * @retval HAL state
- */
-HAL_OPAMP_StateTypeDef HAL_OPAMP_GetState(OPAMP_HandleTypeDef* hopamp)
-{
- /* Check the OPAMP handle allocation */
- if(hopamp == HAL_NULL)
- {
- return HAL_OPAMP_STATE_RESET;
- }
-
- /* Check the parameter */
- assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance));
-
- return hopamp->State;
-}
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-#endif /* STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L152xE || STM32L162xE || STM32L162xC || STM32L152xC || STM32L151xC */
-
-#endif /* HAL_OPAMP_MODULE_ENABLED */
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
