/**
******************************************************************************
* @file stm32h7xx_hal_opamp_ex.c
* @author MCD Application Team
* @brief Extended OPAMP HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the operational amplifier(s)(OPAMP1, OPAMP2 etc)
* peripheral:
* + Extended Initialization and de-initialization functions
* + Extended Peripheral Control functions
*
@verbatim
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2017 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32h7xx_hal.h"
/** @addtogroup STM32H7xx_HAL_Driver
* @{
*/
/** @defgroup OPAMPEx OPAMPEx
* @ingroup RTEMSBSPsARMSTM32H7
* @brief OPAMP Extended HAL module driver
* @{
*/
#ifdef HAL_OPAMP_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup OPAMPEx_Exported_Functions OPAMP Extended Exported Functions
* @ingroup RTEMSBSPsARMSTM32H7
* @{
*/
/** @defgroup OPAMPEx_Exported_Functions_Group1 Extended Input and Output operation functions
* @ingroup RTEMSBSPsARMSTM32H7
* @brief Extended operation functions
*
@verbatim
===============================================================================
##### Extended IO operation functions #####
===============================================================================
[..]
(+) OPAMP Self calibration.
@endverbatim
* @{
*/
/**
* @brief Run the self calibration of 2 OPAMPs in parallel.
* @note Trimming values (PMOS & NMOS) are updated and user trimming is
* enabled is calibration is successful.
* @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.
* @param hopamp1 handle
* @param hopamp2 handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_OPAMPEx_SelfCalibrateAll(OPAMP_HandleTypeDef *hopamp1, OPAMP_HandleTypeDef *hopamp2)
{
HAL_StatusTypeDef status = HAL_OK;
uint32_t trimmingvaluen1;
uint32_t trimmingvaluep1;
uint32_t trimmingvaluen2;
uint32_t trimmingvaluep2;
/* Selection of register of trimming depending on power mode: OTR or HSOTR */
__IO uint32_t* tmp_opamp1_reg_trimming;
__IO uint32_t* tmp_opamp2_reg_trimming;
uint32_t delta;
uint32_t opampmode1;
uint32_t opampmode2;
if((hopamp1 == NULL) || (hopamp2 == NULL))
{
status = HAL_ERROR;
}
/* Check if OPAMP in calibration mode and calibration not yet enable */
else if(hopamp1->State != HAL_OPAMP_STATE_READY)
{
status = HAL_ERROR;
}
else if(hopamp2->State != HAL_OPAMP_STATE_READY)
{
status = HAL_ERROR;
}
else
{
/* Check the parameter */
assert_param(IS_OPAMP_ALL_INSTANCE(hopamp1->Instance));
assert_param(IS_OPAMP_ALL_INSTANCE(hopamp2->Instance));
assert_param(IS_OPAMP_POWERMODE(hopamp1->Init.PowerMode));
assert_param(IS_OPAMP_POWERMODE(hopamp2->Init.PowerMode));
/* Set Calibration mode */
/* Non-inverting input connected to calibration reference voltage. */
SET_BIT(hopamp1->Instance->CSR, OPAMP_CSR_FORCEVP);
SET_BIT(hopamp2->Instance->CSR, OPAMP_CSR_FORCEVP);
/* Save OPAMP mode */
opampmode1 = READ_BIT(hopamp1->Instance->CSR,OPAMP_CSR_VMSEL);
opampmode2 = READ_BIT(hopamp2->Instance->CSR,OPAMP_CSR_VMSEL);
/* Use of standalone mode */
MODIFY_REG(hopamp1->Instance->CSR, OPAMP_CSR_VMSEL, OPAMP_STANDALONE_MODE);
MODIFY_REG(hopamp2->Instance->CSR, OPAMP_CSR_VMSEL, OPAMP_STANDALONE_MODE);
/* user trimming values are used for offset calibration */
SET_BIT(hopamp1->Instance->CSR, OPAMP_CSR_USERTRIM);
SET_BIT(hopamp2->Instance->CSR, OPAMP_CSR_USERTRIM);
/* Select trimming settings depending on power mode */
if (hopamp1->Init.PowerMode == OPAMP_POWERMODE_NORMAL)
{
tmp_opamp1_reg_trimming = &OPAMP1->OTR;
}
else
{
tmp_opamp1_reg_trimming = &OPAMP1->HSOTR;
}
if (hopamp2->Init.PowerMode == OPAMP_POWERMODE_NORMAL)
{
tmp_opamp2_reg_trimming = &OPAMP2->OTR;
}
else
{
tmp_opamp2_reg_trimming = &OPAMP2->HSOTR;
}
/* Enable calibration */
SET_BIT (hopamp1->Instance->CSR, OPAMP_CSR_CALON);
SET_BIT (hopamp2->Instance->CSR, OPAMP_CSR_CALON);
/* 1st calibration - N */
/* Select 90U% VREF */
MODIFY_REG(hopamp1->Instance->CSR, OPAMP_CSR_CALSEL, OPAMP_VREF_90VDDA);
MODIFY_REG(hopamp2->Instance->CSR, OPAMP_CSR_CALSEL, OPAMP_VREF_90VDDA);
/* Enable the selected opamp */
SET_BIT (hopamp1->Instance->CSR, OPAMP_CSR_OPAMPxEN);
SET_BIT (hopamp2->Instance->CSR, OPAMP_CSR_OPAMPxEN);
/* Init trimming counter */
/* Medium value */
trimmingvaluen1 = 16U;
trimmingvaluen2 = 16U;
delta = 8U;
while (delta != 0U)
{
/* Set candidate trimming */
/* OPAMP_POWERMODE_NORMAL */
MODIFY_REG(*tmp_opamp1_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen1);
MODIFY_REG(*tmp_opamp2_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen2);
/* 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(hopamp1->Instance->CSR, OPAMP_CSR_CALOUT)!= 0U)
{
/* OPAMP_CSR_CALOUT is Low try higher trimming */
trimmingvaluen1 += delta;
}
else
{
/* OPAMP_CSR_CALOUT is High try lower trimming */
trimmingvaluen1 -= delta;
}
if (READ_BIT(hopamp2->Instance->CSR, OPAMP_CSR_CALOUT)!= 0U)
{
/* OPAMP_CSR_CALOUT is Low try higher trimming */
trimmingvaluen2 += delta;
}
else
{
/* OPAMP_CSR_CALOUT is High try lower trimming */
trimmingvaluen2 -= 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 0 to 1 */
/* Set candidate trimming */
MODIFY_REG(*tmp_opamp1_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen1);
MODIFY_REG(*tmp_opamp2_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen2);
/* 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(hopamp1->Instance->CSR, OPAMP_CSR_CALOUT)) != 0U)
{
/* Trimming value is actually one value more */
trimmingvaluen1++;
MODIFY_REG(*tmp_opamp1_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen1);
}
if ((READ_BIT(hopamp2->Instance->CSR, OPAMP_CSR_CALOUT)) != 0U)
{
/* Trimming value is actually one value more */
trimmingvaluen2++;
MODIFY_REG(*tmp_opamp2_reg_trimming, OPAMP_OTR_TRIMOFFSETN, trimmingvaluen2);
}
/* 2nd calibration - P */
/* Select 10U% VREF */
MODIFY_REG(hopamp1->Instance->CSR, OPAMP_CSR_CALSEL, OPAMP_VREF_10VDDA);
MODIFY_REG(hopamp2->Instance->CSR, OPAMP_CSR_CALSEL, OPAMP_VREF_10VDDA);
/* Init trimming counter */
/* Medium value */
trimmingvaluep1 = 16U;
trimmingvaluep2 = 16U;
delta = 8U;
while (delta != 0U)
{
/* Set candidate trimming */
/* OPAMP_POWERMODE_NORMAL */
MODIFY_REG(*tmp_opamp1_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep1<<OPAMP_INPUT_NONINVERTING));
MODIFY_REG(*tmp_opamp2_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep2<<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(hopamp1->Instance->CSR, OPAMP_CSR_CALOUT)!= 0U)
{
/* OPAMP_CSR_CALOUT is Low try higher trimming */
trimmingvaluep1 += delta;
}
else
{
/* OPAMP_CSR_CALOUT is HIGH try lower trimming */
trimmingvaluep1 -= delta;
}
if (READ_BIT(hopamp2->Instance->CSR, OPAMP_CSR_CALOUT)!= 0U)
{
/* OPAMP_CSR_CALOUT is Low try higher trimming */
trimmingvaluep2 += delta;
}
else
{
/* OPAMP_CSR_CALOUT is High try lower trimming */
trimmingvaluep2 -= 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_opamp1_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep1<<OPAMP_INPUT_NONINVERTING));
MODIFY_REG(*tmp_opamp2_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep2<<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(hopamp1->Instance->CSR, OPAMP_CSR_CALOUT)!= 0U)
{
/* Trimming value is actually one value more */
trimmingvaluep1++;
MODIFY_REG(*tmp_opamp1_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep1<<OPAMP_INPUT_NONINVERTING));
}
if (READ_BIT(hopamp2->Instance->CSR, OPAMP_CSR_CALOUT)!= 0U)
{
/* Trimming value is actually one value more */
trimmingvaluep2++;
MODIFY_REG(*tmp_opamp2_reg_trimming, OPAMP_OTR_TRIMOFFSETP, (trimmingvaluep2<<OPAMP_INPUT_NONINVERTING));
}
/* Disable calibration & set normal mode (operating mode) */
CLEAR_BIT (hopamp1->Instance->CSR, OPAMP_CSR_CALON);
CLEAR_BIT (hopamp2->Instance->CSR, OPAMP_CSR_CALON);
/* Disable the OPAMPs */
CLEAR_BIT (hopamp1->Instance->CSR, OPAMP_CSR_OPAMPxEN);
CLEAR_BIT (hopamp2->Instance->CSR, OPAMP_CSR_OPAMPxEN);
/* Self calibration is successful */
/* Store calibration (user trimming) results in init structure. */
/* Set user trimming mode */
hopamp1->Init.UserTrimming = OPAMP_TRIMMING_USER;
hopamp2->Init.UserTrimming = OPAMP_TRIMMING_USER;
/* Affect calibration parameters depending on mode normal/high speed */
if (hopamp1->Init.PowerMode != OPAMP_POWERMODE_HIGHSPEED)
{
/* Write calibration result N */
hopamp1->Init.TrimmingValueN = trimmingvaluen1;
/* Write calibration result P */
hopamp1->Init.TrimmingValueP = trimmingvaluep1;
}
else
{
/* Write calibration result N */
hopamp1->Init.TrimmingValueNHighSpeed = trimmingvaluen1;
/* Write calibration result P */
hopamp1->Init.TrimmingValuePHighSpeed = trimmingvaluep1;
}
if (hopamp2->Init.PowerMode != OPAMP_POWERMODE_HIGHSPEED)
{
/* Write calibration result N */
hopamp2->Init.TrimmingValueN = trimmingvaluen2;
/* Write calibration result P */
hopamp2->Init.TrimmingValueP = trimmingvaluep2;
}
else
{
/* Write calibration result N */
hopamp2->Init.TrimmingValueNHighSpeed = trimmingvaluen2;
/* Write calibration result P */
hopamp2->Init.TrimmingValuePHighSpeed = trimmingvaluep2;
}
/* Update OPAMP state */
hopamp1->State = HAL_OPAMP_STATE_READY;
hopamp2->State = HAL_OPAMP_STATE_READY;
/* Restore OPAMP mode after calibration */
MODIFY_REG(hopamp1->Instance->CSR, OPAMP_CSR_VMSEL, opampmode1);
MODIFY_REG(hopamp2->Instance->CSR, OPAMP_CSR_VMSEL, opampmode2);
}
return status;
}
/**
* @}
*/
/** @defgroup OPAMPEx_Exported_Functions_Group2 Peripheral Control functions
* @ingroup RTEMSBSPsARMSTM32H7
* @brief Peripheral Control functions
*
@verbatim
===============================================================================
##### Peripheral Control functions #####
===============================================================================
[..]
(+) OPAMP unlock.
@endverbatim
* @{
*/
/**
* @brief Unlock the selected OPAMP configuration.
* @note This function must be called only when OPAMP is in state "locked".
* @param hopamp: OPAMP handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_OPAMPEx_Unlock(OPAMP_HandleTypeDef* hopamp)
{
HAL_StatusTypeDef status = HAL_OK;
/* Check the OPAMP handle allocation */
/* Check if OPAMP locked */
if(hopamp == NULL)
{
status = HAL_ERROR;
}
/* Check the OPAMP handle allocation */
/* Check if OPAMP locked */
else if(hopamp->State == HAL_OPAMP_STATE_BUSYLOCKED)
{
/* Check the parameter */
assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance));
/* OPAMP state changed to locked */
hopamp->State = HAL_OPAMP_STATE_BUSY;
}
else
{
status = HAL_ERROR;
}
return status;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_OPAMP_MODULE_ENABLED */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
