| /** |
| ****************************************************************************** |
| * @file stm32h7xx_hal_opamp.c |
| * @author MCD Application Team |
| * @brief OPAMP HAL module driver. |
| * This file provides firmware functions to manage the following |
| * functionalities of the operational amplifier(s) peripheral: |
| * + Initialization and de-initialization functions |
| * + IO operation functions |
| * + Peripheral Control functions |
| * + Peripheral State functions |
| * |
| ****************************************************************************** |
| * @attention |
| * |
| * Copyright (c) 2017 STMicroelectronics. |
| * All rights reserved. |
| * |
| * This software is licensed under terms that can be found in the LICENSE file |
| * in the root directory of this software component. |
| * If no LICENSE file comes with this software, it is provided AS-IS. |
| * |
| ****************************************************************************** |
| @verbatim |
| ================================================================================ |
| ##### OPAMP Peripheral Features ##### |
| ================================================================================ |
| |
| [..] The device integrates 2 operational amplifiers OPAMP1 & OPAMP2 |
| |
| (#) The OPAMP(s) provides several exclusive running modes. |
| (++) Standalone mode |
| (++) Programmable Gain Amplifier (PGA) modes |
| (++) Follower mode |
| |
| (#) Each OPAMP(s) can be configured in normal and high speed 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. |
| (90% of VDDA for NMOS transistors, 10% of VDDA for PMOS transistors). |
| (As OPAMP is Rail-to-rail input/output, these 2 steps calibration is |
| appropriate and enough in most cases). |
| (+++) Runs automatically the calibration. |
| (+++) 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) |
| (+++) HAL_OPAMPEx_SelfCalibrateAll |
| runs calibration of all OPAMPs in parallel to save search 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. |
| |
| (#) Running mode: Programmable Gain Amplifier (PGA) mode |
| (Resistor feedback output) |
| (#) The OPAMP(s) output(s) can be internally connected to resistor feedback |
| output. |
| (#) OPAMP gain can be selected as : |
| |
| (##) Gain of x2, x4, x8 or x16 for non inverting mode with: |
| (+++) VREF- referenced. |
| (+++) Filtering on VINM0, VREF- referenced. |
| (+++) VINM0 node for bias voltage and VINP0 for input signal. |
| (+++) VINM0 node for bias voltage and VINP0 for input signal, VINM1 node for filtering. |
| |
| (##) Gain of x-1, x-3, x-7 or x-15 for inverting mode with: |
| (+++) VINM0 node for input signal and VINP0 for bias. |
| (+++) VINM0 node for input signal and VINP0 for bias voltage, VINM1 node for filtering. |
| |
| (#) The OPAMPs inverting input can be selected according to the Reference Manual |
| "OPAMP functional description" chapter. |
| |
| (#) The OPAMPs non inverting input can be selected according to the Reference Manual |
| "OPAMP functional description" chapter. |
| |
| |
| ##### How to use this driver ##### |
| ================================================================================ |
| [..] |
| |
| *** High speed / normal power mode *** |
| ============================================ |
| [..] To run in high speed mode: |
| |
| (#) Configure the OPAMP using HAL_OPAMP_Init() function: |
| (++) Select OPAMP_POWERMODE_HIGHSPEED |
| (++) Otherwise select OPAMP_POWERMODE_NORMAL |
| |
| *** 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 __HAL_RCC_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. |
| |
| (#) Registrate Callbacks |
| (++) The compilation define USE_HAL_OPAMP_REGISTER_CALLBACKS when set to 1 |
| allows the user to configure dynamically the driver callbacks. |
| |
| (++) Use Functions HAL_OPAMP_RegisterCallback() to register a user callback, |
| it allows to register following callbacks: |
| (+++) MspInitCallback : OPAMP MspInit. |
| (+++) MspDeInitCallback : OPAMP MspDeInit. |
| This function takes as parameters the HAL peripheral handle, the Callback ID |
| and a pointer to the user callback function. |
| |
| (++) Use function HAL_OPAMP_UnRegisterCallback() to reset a callback to the default |
| weak (surcharged) function. It allows to reset following callbacks: |
| (+++) MspInitCallback : OPAMP MspInit. |
| (+++) MspDeInitCallback : OPAMP MspDeInit. |
| (+++) All Callbacks |
| (#) Configure the OPAMP using HAL_OPAMP_Init() function: |
| (++) Select the mode |
| (++) Select the inverting input |
| (++) Select the non-inverting input |
| (++) If PGA mode is enabled, Select if inverting input is connected. |
| (++) Select either factory or user defined trimming mode. |
| (++) If the user-defined trimming mode is enabled, select PMOS & NMOS trimming values |
| (typically values set 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 STM32H7, 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, select first the parameters you wish to modify. |
| |
| (#) Change from high speed mode to normal power mode (& vice versa) requires |
| first HAL_OPAMP_DeInit() (force OPAMP OFF) and then HAL_OPAMP_Init(). |
| In other words, of OPAMP is ON, HAL_OPAMP_Init can NOT change power mode |
| alone. |
| |
| @endverbatim |
| ****************************************************************************** |
| Table 1. OPAMPs inverting/non-inverting inputs for the STM32H7 devices: |
| |
| +------------------------------------------------------------------------| |
| | | | OPAMP1 | OPAMP2 | |
| |-----------------|---------|----------------------|---------------------| |
| | Inverting Input | VM_SEL | VINM0-> PC5 | VINM0-> PE8 | |
| | | | VINM1-> PA7 | VINM1-> PG1 | |
| | | | Internal: | Internal: | |
| | | | ADC1_IN9 | OPAMP2_OUT | |
| | | | ADC2_IN9 | PGA mode | |
| | | | OPAMP1_OUT | | |
| | | | PGA mode | | |
| |-----------------|---------|----------------------|---------------------| |
| | Non Inverting | VP_SEL | | | |
| | | | VP0 -> PB0 (GPIO) | VP0 -> PE9 (GPIO) | |
| | | | Internal: | Internal: | |
| | Input | | DAC1_CH1_int | DAC1_CH2_int | |
| | | | ADC1_IN8 | DAC2_CH1_int | |
| | | | ADC2_IN8 | COMP2_INP | |
| | | | COMP1_INP | | |
| +------------------------------------------------------------------------| |
| |
| |
| [..] Table 2. OPAMPs outputs for the STM32H7 devices: |
| |
| +------------------------------------------------------------------------- |
| | | | OPAMP1 | OPAMP2 | |
| |-----------------|--------|-----------------------|---------------------| |
| | Output | VOUT | PC4 | PE7 | |
| | | | & ADC1_IN4| | & COMP2_INN7 if | |
| | | | ADC2_IN4 |connected internally | |
| | | | COMP1_INN7 if | | |
| | | | connected internally | | |
| |-----------------|--------|-----------------------|---------------------| |
| */ |
| |
| /* Includes ------------------------------------------------------------------*/ |
| #include "stm32h7xx_hal.h" |
| |
| /** @addtogroup STM32H7xx_HAL_Driver |
| * @{ |
| */ |
| |
| /** @defgroup OPAMP OPAMP |
| * @brief OPAMP module driver |
| * @{ |
| */ |
| |
| #ifdef HAL_OPAMP_MODULE_ENABLED |
| |
| /* Private types -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private constants ---------------------------------------------------------*/ |
| /** @addtogroup OPAMP_Private_Constants |
| * @{ |
| */ |
| |
| /* CSR register reset value */ |
| #define OPAMP_CSR_RESET_VALUE 0x00000000U |
| |
| /* CSR Init masks */ |
| |
| #define OPAMP_CSR_INIT_MASK_PGA (OPAMP_CSR_OPAHSM | OPAMP_CSR_VMSEL | OPAMP_CSR_PGGAIN | OPAMP_CSR_PGGAIN \ |
| | OPAMP_CSR_VPSEL | OPAMP_CSR_USERTRIM) |
| |
| |
| #define OPAMP_CSR_INIT_MASK_FOLLOWER (OPAMP_CSR_OPAHSM | OPAMP_CSR_VMSEL| OPAMP_CSR_VPSEL \ |
| | OPAMP_CSR_USERTRIM) |
| |
| |
| #define OPAMP_CSR_INIT_MASK_STANDALONE (OPAMP_CSR_OPAHSM | OPAMP_CSR_VMSEL | OPAMP_CSR_VPSEL \ |
| | OPAMP_CSR_VMSEL | OPAMP_CSR_USERTRIM) |
| /** |
| * @} |
| */ |
| |
| /* Private macros ------------------------------------------------------------*/ |
| /* Private functions ---------------------------------------------------------*/ |
| /* Exported 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 ##### |
| ============================================================================== |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Initialize the OPAMP according to the specified |
| * parameters in the OPAMP_InitTypeDef and initialize 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 updateotrlpotr; |
| |
| /* Check the OPAMP handle allocation and lock status */ |
| /* Init not allowed if calibration is ongoing */ |
| if(hopamp == NULL) |
| { |
| return HAL_ERROR; |
| } |
| else if(hopamp->State == HAL_OPAMP_STATE_BUSYLOCKED) |
| { |
| return HAL_ERROR; |
| } |
| else if(hopamp->State == HAL_OPAMP_STATE_CALIBBUSY) |
| { |
| return HAL_ERROR; |
| } |
| else |
| { |
| /* Check the parameter */ |
| assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance)); |
| |
| /* Set OPAMP parameters */ |
| assert_param(IS_OPAMP_POWERMODE(hopamp->Init.PowerMode)); |
| assert_param(IS_OPAMP_FUNCTIONAL_NORMALMODE(hopamp->Init.Mode)); |
| assert_param(IS_OPAMP_NONINVERTING_INPUT(hopamp->Init.NonInvertingInput)); |
| |
| #if (USE_HAL_OPAMP_REGISTER_CALLBACKS == 1) |
| if(hopamp->State == HAL_OPAMP_STATE_RESET) |
| { |
| if(hopamp->MspInitCallback == NULL) |
| { |
| hopamp->MspInitCallback = HAL_OPAMP_MspInit; |
| } |
| } |
| #endif /* USE_HAL_OPAMP_REGISTER_CALLBACKS */ |
| if ((hopamp->Init.Mode) == OPAMP_STANDALONE_MODE) |
| { |
| assert_param(IS_OPAMP_INVERTING_INPUT_STANDALONE(hopamp->Init.InvertingInput)); |
| } |
| |
| if ((hopamp->Init.Mode) == OPAMP_PGA_MODE) |
| { |
| assert_param(IS_OPAMP_PGA_GAIN(hopamp->Init.PgaGain)); |
| assert_param(IS_OPAMP_PGACONNECT(hopamp->Init.PgaConnect)); |
| } |
| |
| |
| assert_param(IS_OPAMP_TRIMMING(hopamp->Init.UserTrimming)); |
| |
| 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.TrimmingValuePHighSpeed)); |
| assert_param(IS_OPAMP_TRIMMINGVALUE(hopamp->Init.TrimmingValueNHighSpeed)); |
| } |
| } |
| |
| if(hopamp->State == HAL_OPAMP_STATE_RESET) |
| { |
| /* Allocate lock resource and initialize it */ |
| hopamp->Lock = HAL_UNLOCKED; |
| } |
| |
| #if (USE_HAL_OPAMP_REGISTER_CALLBACKS == 1) |
| hopamp->MspInitCallback(hopamp); |
| #else |
| /* Call MSP init function */ |
| HAL_OPAMP_MspInit(hopamp); |
| #endif /* USE_HAL_OPAMP_REGISTER_CALLBACKS */ |
| |
| /* Set operating mode */ |
| CLEAR_BIT(hopamp->Instance->CSR, OPAMP_CSR_CALON); |
| /* In PGA mode InvertingInput is Not Applicable */ |
| if (hopamp->Init.Mode == OPAMP_PGA_MODE) |
| { |
| MODIFY_REG(hopamp->Instance->CSR, OPAMP_CSR_INIT_MASK_PGA, \ |
| hopamp->Init.PowerMode | \ |
| hopamp->Init.Mode | \ |
| hopamp->Init.PgaGain | \ |
| hopamp->Init.PgaConnect | \ |
| hopamp->Init.NonInvertingInput | \ |
| hopamp->Init.UserTrimming); |
| } |
| |
| if (hopamp->Init.Mode == OPAMP_FOLLOWER_MODE) |
| { |
| /* In Follower mode InvertingInput is Not Applicable */ |
| MODIFY_REG(hopamp->Instance->CSR, OPAMP_CSR_INIT_MASK_FOLLOWER, \ |
| hopamp->Init.PowerMode | \ |
| hopamp->Init.Mode | \ |
| hopamp->Init.NonInvertingInput | \ |
| hopamp->Init.UserTrimming); |
| } |
| |
| if (hopamp->Init.Mode == OPAMP_STANDALONE_MODE) |
| { |
| MODIFY_REG(hopamp->Instance->CSR, OPAMP_CSR_INIT_MASK_STANDALONE, \ |
| hopamp->Init.PowerMode | \ |
| hopamp->Init.Mode | \ |
| hopamp->Init.InvertingInput | \ |
| hopamp->Init.NonInvertingInput | \ |
| hopamp->Init.UserTrimming); |
| } |
| |
| if (hopamp->Init.UserTrimming == OPAMP_TRIMMING_USER) |
| { |
| /* Set power mode and associated calibration parameters */ |
| if (hopamp->Init.PowerMode != OPAMP_POWERMODE_HIGHSPEED) |
| { |
| /* OPAMP_POWERMODE_NORMAL */ |
| /* Set calibration mode (factory or user) and values for */ |
| /* transistors differential pair high (PMOS) and low (NMOS) for */ |
| /* normal mode. */ |
| updateotrlpotr = (((hopamp->Init.TrimmingValueP) << (OPAMP_INPUT_NONINVERTING)) \ |
| | (hopamp->Init.TrimmingValueN)); |
| MODIFY_REG(hopamp->Instance->OTR, OPAMP_OTR_TRIMOFFSETN | OPAMP_OTR_TRIMOFFSETP, updateotrlpotr); |
| } |
| else |
| { |
| /* OPAMP_POWERMODE_HIGHSPEED*/ |
| /* transistors differential pair high (PMOS) and low (NMOS) for */ |
| /* high speed mode. */ |
| updateotrlpotr = (((hopamp->Init.TrimmingValuePHighSpeed) << (OPAMP_INPUT_NONINVERTING)) \ |
| | (hopamp->Init.TrimmingValueNHighSpeed)); |
| MODIFY_REG(hopamp->Instance->HSOTR, OPAMP_OTR_TRIMOFFSETN | OPAMP_OTR_TRIMOFFSETP, updateotrlpotr); |
| } |
| } |
| |
| /* Update the OPAMP state*/ |
| if (hopamp->State == HAL_OPAMP_STATE_RESET) |
| { |
| /* From RESET state to READY State */ |
| hopamp->State = HAL_OPAMP_STATE_READY; |
| } |
| /* else: remain in READY or BUSY state (no update) */ |
| return status; |
| } |
| } |
| |
| /** |
| * @brief DeInitialize the OPAMP peripheral |
| * @note Deinitialization can be performed if the OPAMP configuration is locked. |
| * (the lock is SW in H7) |
| * @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 */ |
| /* DeInit not allowed if calibration is on going */ |
| if(hopamp == NULL) |
| { |
| status = HAL_ERROR; |
| } |
| else if(hopamp->State == HAL_OPAMP_STATE_CALIBBUSY) |
| { |
| status = HAL_ERROR; |
| } |
| else |
| { |
| /* Check the parameter */ |
| assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance)); |
| |
| /* Set OPAMP_CSR register to reset value */ |
| WRITE_REG(hopamp->Instance->CSR, OPAMP_CSR_RESET_VALUE); |
| |
| /* DeInit the low level hardware */ |
| #if (USE_HAL_OPAMP_REGISTER_CALLBACKS == 1) |
| if(hopamp->MspDeInitCallback == NULL) |
| { |
| hopamp->MspDeInitCallback = HAL_OPAMP_MspDeInit; |
| } |
| /* DeInit the low level hardware */ |
| hopamp->MspDeInitCallback(hopamp); |
| #else |
| HAL_OPAMP_MspDeInit(hopamp); |
| #endif /* USE_HAL_OPAMP_REGISTER_CALLBACKS */ |
| |
| /* Update the OPAMP state*/ |
| hopamp->State = HAL_OPAMP_STATE_RESET; |
| /* Process unlocked */ |
| __HAL_UNLOCK(hopamp); |
| |
| } |
| |
| return status; |
| } |
| |
| |
| /** |
| * @brief Initialize the OPAMP MSP. |
| * @param hopamp OPAMP handle |
| * @retval None |
| */ |
| __weak void HAL_OPAMP_MspInit(OPAMP_HandleTypeDef *hopamp) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(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 DeInitialize OPAMP MSP. |
| * @param hopamp OPAMP handle |
| * @retval None |
| */ |
| __weak void HAL_OPAMP_MspDeInit(OPAMP_HandleTypeDef *hopamp) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(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 == NULL) |
| { |
| status = HAL_ERROR; |
| } |
| else if(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 */ |
| SET_BIT (hopamp->Instance->CSR, OPAMP_CSR_OPAMPxEN); |
| |
| /* 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 == NULL) |
| { |
| status = HAL_ERROR; |
| } |
| else if(hopamp->State == HAL_OPAMP_STATE_BUSYLOCKED) |
| { |
| status = HAL_ERROR; |
| } |
| else if(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 */ |
| CLEAR_BIT (hopamp->Instance->CSR, OPAMP_CSR_OPAMPxEN); |
| |
| /* 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 Calibration is performed in the mode specified in OPAMP init |
| * structure (mode normal or high-speed). To perform calibration for |
| * both modes, repeat this function twice after OPAMP init structure |
| * accordingly updated. |
| * @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 trimmingvaluen; |
| uint32_t trimmingvaluep; |
| uint32_t delta; |
| uint32_t opampmode; |
| |
| __IO uint32_t* tmp_opamp_reg_trimming; /* Selection of register of trimming depending on power mode: OTR or HSOTR */ |
| |
| /* Check the OPAMP handle allocation */ |
| /* Check if OPAMP locked */ |
| if(hopamp == NULL) |
| { |
| status = HAL_ERROR; |
| } |
| else if(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)); |
| |
| opampmode = READ_BIT(hopamp->Instance->CSR,OPAMP_CSR_VMSEL); |
| |
| /* Use of standalone mode */ |
| MODIFY_REG(hopamp->Instance->CSR, OPAMP_CSR_VMSEL, OPAMP_STANDALONE_MODE); |
| /* user trimming values are used for offset calibration */ |
| SET_BIT(hopamp->Instance->CSR, OPAMP_CSR_USERTRIM); |
| |
| /* Select trimming settings depending on power mode */ |
| if (hopamp->Init.PowerMode == OPAMP_POWERMODE_NORMAL) |
| { |
| tmp_opamp_reg_trimming = &hopamp->Instance->OTR; |
| |
| } |
| else |
| { |
| /* high speed Mode */ |
| tmp_opamp_reg_trimming = &hopamp->Instance->HSOTR; |
| } |
| |
| |
| /* Enable calibration */ |
| SET_BIT (hopamp->Instance->CSR, OPAMP_CSR_CALON); |
| |
| /* Force internal reference on VP */ |
| SET_BIT (hopamp->Instance->CSR, OPAMP_CSR_FORCEVP); |
| |
| /* 1st calibration - N */ |
| MODIFY_REG(hopamp->Instance->CSR, OPAMP_CSR_CALSEL, OPAMP_VREF_90VDDA); |
| |
| /* Enable the selected opamp */ |
| SET_BIT (hopamp->Instance->CSR, OPAMP_CSR_OPAMPxEN); |
| |
| /* Init trimming counter */ |
| /* Medium value */ |
| trimmingvaluen = 16U; |
| delta = 8U; |
| |
| while (delta != 0U) |
| { |
| /* Set candidate trimming */ |
| /* OPAMP_POWERMODE_NORMAL */ |
| MODIFY_REG(*tmp_opamp_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen); |
| |
| /* OFFTRIMmax delay 2 ms as per datasheet (electrical characteristics */ |
| /* Offset trim time: during calibration, minimum time needed between */ |
| /* two steps to have 1 mV accuracy */ |
| HAL_Delay(OPAMP_TRIMMING_DELAY); |
| |
| if (READ_BIT(hopamp->Instance->CSR, OPAMP_CSR_CALOUT) != 0U) |
| { |
| /* OPAMP_CSR_CALOUT is HIGH try higher trimming */ |
| trimmingvaluen += delta; |
| } |
| else |
| { |
| /* OPAMP_CSR_CALOUT is LOW try lower trimming */ |
| trimmingvaluen -= delta; |
| } |
| /* Divide range by 2 to continue dichotomy sweep */ |
| delta >>= 1; |
| } |
| |
| /* Still need to check if right calibration is current value or one step below */ |
| /* Indeed the first value that causes the OUTCAL bit to change from 1 to 0 */ |
| |
| MODIFY_REG(*tmp_opamp_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen); |
| |
| /* OFFTRIMmax delay 2 ms as per datasheet (electrical characteristics */ |
| /* Offset trim time: during calibration, minimum time needed between */ |
| /* two steps to have 1 mV accuracy */ |
| HAL_Delay(OPAMP_TRIMMING_DELAY); |
| |
| if ((READ_BIT(hopamp->Instance->CSR, OPAMP_CSR_CALOUT)) != 0U) |
| { |
| /* Trimming value is actually one value more */ |
| trimmingvaluen++; |
| /* Set right trimming */ |
| MODIFY_REG(*tmp_opamp_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen); |
| } |
| |
| /* 2nd calibration - P */ |
| MODIFY_REG(hopamp->Instance->CSR, OPAMP_CSR_CALSEL, OPAMP_VREF_10VDDA); |
| |
| /* Init trimming counter */ |
| /* Medium value */ |
| trimmingvaluep = 16U; |
| delta = 8U; |
| |
| while (delta != 0U) |
| { |
| /* Set candidate trimming */ |
| /* OPAMP_POWERMODE_NORMAL */ |
| MODIFY_REG(*tmp_opamp_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep<<OPAMP_INPUT_NONINVERTING)); |
| |
| /* OFFTRIMmax delay 2 ms as per datasheet (electrical characteristics */ |
| /* Offset trim time: during calibration, minimum time needed between */ |
| /* two steps to have 1 mV accuracy */ |
| HAL_Delay(OPAMP_TRIMMING_DELAY); |
| |
| if (READ_BIT(hopamp->Instance->CSR, OPAMP_CSR_CALOUT)!= 0U) |
| { |
| /* OPAMP_CSR_CALOUT is HIGH try higher trimming */ |
| trimmingvaluep += delta; |
| } |
| else |
| { |
| /* OPAMP_CSR_CALOUT is LOW try lower trimming */ |
| trimmingvaluep -= delta; |
| } |
| |
| /* Divide range by 2 to continue dichotomy sweep */ |
| delta >>= 1U; |
| } |
| |
| /* Still need to check if right calibration is current value or one step below */ |
| /* Indeed the first value that causes the OUTCAL bit to change from 1 to 0 */ |
| /* Set candidate trimming */ |
| MODIFY_REG(*tmp_opamp_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep<<OPAMP_INPUT_NONINVERTING)); |
| |
| /* OFFTRIMmax delay 2 ms as per datasheet (electrical characteristics */ |
| /* Offset trim time: during calibration, minimum time needed between */ |
| /* two steps to have 1 mV accuracy */ |
| HAL_Delay(OPAMP_TRIMMING_DELAY); |
| |
| if (READ_BIT(hopamp->Instance->CSR, OPAMP_CSR_CALOUT) != 0U) |
| { |
| /* Trimming value is actually one value more */ |
| trimmingvaluep++; |
| MODIFY_REG(*tmp_opamp_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep<<OPAMP_INPUT_NONINVERTING)); |
| } |
| |
| /* Disable calibration & set normal mode (operating mode) */ |
| CLEAR_BIT (hopamp->Instance->CSR, OPAMP_CSR_CALON); |
| |
| /* Disable the OPAMP */ |
| CLEAR_BIT (hopamp->Instance->CSR, OPAMP_CSR_OPAMPxEN); |
| |
| /* Set operating mode back */ |
| CLEAR_BIT(hopamp->Instance->CSR, OPAMP_CSR_FORCEVP); |
| |
| /* 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/high speed */ |
| if (hopamp->Init.PowerMode != OPAMP_POWERMODE_HIGHSPEED) |
| { |
| /* Write calibration result N */ |
| hopamp->Init.TrimmingValueN = trimmingvaluen; |
| /* Write calibration result P */ |
| hopamp->Init.TrimmingValueP = trimmingvaluep; |
| } |
| else |
| { |
| /* Write calibration result N */ |
| hopamp->Init.TrimmingValueNHighSpeed = trimmingvaluen; |
| /* Write calibration result P */ |
| hopamp->Init.TrimmingValuePHighSpeed = trimmingvaluep; |
| } |
| /* Restore OPAMP mode after calibration */ |
| MODIFY_REG(hopamp->Instance->CSR, OPAMP_CSR_VMSEL, opampmode); |
| } |
| |
| else |
| { |
| /* OPAMP can not be calibrated from this mode */ |
| status = HAL_ERROR; |
| } |
| } |
| return status; |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** @defgroup OPAMP_Exported_Functions_Group3 Peripheral Control functions |
| * @brief Peripheral Control functions |
| * |
| @verbatim |
| =============================================================================== |
| ##### Peripheral Control functions ##### |
| =============================================================================== |
| [..] |
| This subsection provides a set of functions allowing to control the OPAMP data |
| transfers. |
| |
| |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Lock the selected OPAMP configuration. |
| * @note On STM32H7, HAL OPAMP lock is software lock only (in |
| * contrast of hardware lock available 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 == NULL) |
| { |
| status = HAL_ERROR; |
| } |
| |
| else if(hopamp->State != HAL_OPAMP_STATE_BUSY) |
| { |
| 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; |
| } |
| |
| /** |
| * @brief Return the OPAMP factory trimming value. |
| * @note On STM32H7 OPAMP, user can retrieve factory trimming if |
| * OPAMP has never been set to user trimming before. |
| * Therefore, this function must be called when OPAMP init |
| * parameter "UserTrimming" is set to trimming factory, |
| * and before OPAMP calibration (function |
| * "HAL_OPAMP_SelfCalibrate()"). |
| * Otherwise, factory trimming 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 high-speed). |
| * 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 |
| * |
| */ |
| HAL_OPAMP_TrimmingValueTypeDef HAL_OPAMP_GetTrimOffset (OPAMP_HandleTypeDef *hopamp, uint32_t trimmingoffset) |
| { |
| HAL_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 == NULL) |
| { |
| return OPAMP_FACTORYTRIMMING_DUMMY; |
| } |
| |
| if(hopamp->State == HAL_OPAMP_STATE_READY) |
| { |
| /* 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 (READ_BIT(hopamp->Instance->CSR,OPAMP_CSR_USERTRIM)!= 0U) |
| { |
| /* This function must called when OPAMP init parameter "UserTrimming" */ |
| /* is set to trimming factory, and before OPAMP calibration (function */ |
| /* "HAL_OPAMP_SelfCalibrate()"). */ |
| /* Otherwise, factory trimming 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 = &hopamp->Instance->OTR; |
| } |
| else |
| { |
| tmp_opamp_reg_trimming = &hopamp->Instance->HSOTR; |
| } |
| |
| /* Get factory trimming */ |
| if (trimmingoffset == OPAMP_FACTORYTRIMMING_P) |
| { |
| /* OPAMP_FACTORYTRIMMING_P */ |
| trimmingvalue = ((*tmp_opamp_reg_trimming) & OPAMP_OTR_TRIMOFFSETP) >> OPAMP_INPUT_NONINVERTING; |
| } |
| else |
| { |
| /* OPAMP_FACTORYTRIMMING_N */ |
| trimmingvalue = (*tmp_opamp_reg_trimming) & OPAMP_OTR_TRIMOFFSETN; |
| } |
| } |
| } |
| else |
| { |
| return OPAMP_FACTORYTRIMMING_DUMMY; |
| } |
| |
| return trimmingvalue; |
| } |
| |
| #if (USE_HAL_OPAMP_REGISTER_CALLBACKS == 1) |
| /** |
| * @brief Register a User OPAMP Callback |
| * To be used instead of the weak (surcharged) predefined callback |
| * @param hopamp OPAMP handle |
| * @param CallbackId ID of the callback to be registered |
| * This parameter can be one of the following values: |
| * @arg @ref HAL_OPAMP_MSPINIT_CB_ID OPAMP MspInit callback ID |
| * @arg @ref HAL_OPAMP_MSPDEINIT_CB_ID OPAMP MspDeInit callback ID |
| * @param pCallback pointer to the Callback function |
| * @retval status |
| */ |
| HAL_StatusTypeDef HAL_OPAMP_RegisterCallback (OPAMP_HandleTypeDef *hopamp, HAL_OPAMP_CallbackIDTypeDef CallbackId, pOPAMP_CallbackTypeDef pCallback) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| if(pCallback == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Process locked */ |
| __HAL_LOCK(hopamp); |
| |
| if(hopamp->State == HAL_OPAMP_STATE_READY) |
| { |
| switch (CallbackId) |
| { |
| case HAL_OPAMP_MSPINIT_CB_ID : |
| hopamp->MspInitCallback = pCallback; |
| break; |
| case HAL_OPAMP_MSPDEINIT_CB_ID : |
| hopamp->MspDeInitCallback = pCallback; |
| break; |
| default : |
| /* update return status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else if (hopamp->State == HAL_OPAMP_STATE_RESET) |
| { |
| switch (CallbackId) |
| { |
| case HAL_OPAMP_MSPINIT_CB_ID : |
| hopamp->MspInitCallback = pCallback; |
| break; |
| case HAL_OPAMP_MSPDEINIT_CB_ID : |
| hopamp->MspDeInitCallback = pCallback; |
| break; |
| default : |
| /* update return status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else |
| { |
| /* update return status */ |
| status = HAL_ERROR; |
| } |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(hopamp); |
| return status; |
| } |
| |
| /** |
| * @brief Unregister a User OPAMP Callback |
| * OPAMP Callback is redirected to the weak (surcharged) predefined callback |
| * @param hopamp OPAMP handle |
| * @param CallbackId ID of the callback to be unregistered |
| * This parameter can be one of the following values: |
| * @arg @ref HAL_OPAMP_MSPINIT_CB_ID OPAMP MSP Init Callback ID |
| * @arg @ref HAL_OPAMP_MSPDEINIT_CB_ID OPAMP MSP DeInit Callback ID |
| * @arg @ref HAL_OPAMP_ALL_CB_ID OPAMP All Callbacks |
| * @retval status |
| */ |
| HAL_StatusTypeDef HAL_OPAMP_UnRegisterCallback (OPAMP_HandleTypeDef *hopamp, HAL_OPAMP_CallbackIDTypeDef CallbackId) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| /* Process locked */ |
| __HAL_LOCK(hopamp); |
| |
| if(hopamp->State == HAL_OPAMP_STATE_READY) |
| { |
| switch (CallbackId) |
| { |
| case HAL_OPAMP_MSPINIT_CB_ID : |
| hopamp->MspInitCallback = HAL_OPAMP_MspInit; |
| break; |
| case HAL_OPAMP_MSPDEINIT_CB_ID : |
| hopamp->MspDeInitCallback = HAL_OPAMP_MspDeInit; |
| break; |
| case HAL_OPAMP_ALL_CB_ID : |
| hopamp->MspInitCallback = HAL_OPAMP_MspInit; |
| hopamp->MspDeInitCallback = HAL_OPAMP_MspDeInit; |
| break; |
| default : |
| /* update return status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else if (hopamp->State == HAL_OPAMP_STATE_RESET) |
| { |
| switch (CallbackId) |
| { |
| case HAL_OPAMP_MSPINIT_CB_ID : |
| hopamp->MspInitCallback = HAL_OPAMP_MspInit; |
| break; |
| case HAL_OPAMP_MSPDEINIT_CB_ID : |
| hopamp->MspDeInitCallback = HAL_OPAMP_MspDeInit; |
| break; |
| default : |
| /* update return status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else |
| { |
| /* update return status */ |
| status = HAL_ERROR; |
| } |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(hopamp); |
| return status; |
| } |
| |
| #endif /* USE_HAL_OPAMP_REGISTER_CALLBACKS */ |
| |
| /** |
| * @} |
| */ |
| |
| |
| /** @defgroup OPAMP_Exported_Functions_Group4 Peripheral State functions |
| * @brief Peripheral State functions |
| * |
| @verbatim |
| =============================================================================== |
| ##### Peripheral State functions ##### |
| =============================================================================== |
| [..] |
| This subsection permits to get in run-time the status of the peripheral. |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Return the OPAMP handle state. |
| * @param hopamp OPAMP handle |
| * @retval HAL state |
| */ |
| HAL_OPAMP_StateTypeDef HAL_OPAMP_GetState(OPAMP_HandleTypeDef *hopamp) |
| { |
| /* Check the OPAMP handle allocation */ |
| if(hopamp == NULL) |
| { |
| return HAL_OPAMP_STATE_RESET; |
| } |
| |
| /* Check the parameter */ |
| assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance)); |
| |
| /* Return OPAMP handle state */ |
| return hopamp->State; |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| #endif /* HAL_OPAMP_MODULE_ENABLED */ |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
