/**
* @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 == 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_CSR register to reset value */
WRITE_REG(hopamp->Instance->CSR, OPAMP_CSR_RESET_VALUE);
/* DeInit the low level hardware: GPIO, CLOCK and NVIC */
HAL_OPAMP_MspDeInit(hopamp);
/* Update the OPAMP state*/
hopamp->State = HAL_OPAMP_STATE_RESET;
}
return status;
}
/**
* @brief DeInitialize the OPAMP peripheral.
* @note Deinitialization can be performed if the OPAMP configuration is locked.
* (the lock is SW in L4)
* @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 ongoing */
if((hopamp == NULL) || (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 */
/* Mind that OPAMP1_CSR_OPARANGE of CSR of OPAMP1 remains unchanged (applies to both OPAMPs) */
/* OPAMP shall be disabled first separately */
CLEAR_BIT(hopamp->Instance->CSR, OPAMP_CSR_OPAMPxEN);
MODIFY_REG(hopamp->Instance->CSR, OPAMP_CSR_RESET_BITS, OPAMP_CSR_RESET_VALUE);
/* DeInit the low level hardware: GPIO, CLOCK and NVIC */
HAL_OPAMP_MspDeInit(hopamp);
/* Update the OPAMP state*/
hopamp->State = HAL_OPAMP_STATE_RESET;
/* Process unlocked */
__HAL_UNLOCK(hopamp);
}
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 == 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 DeInitializes the OPAMP peripheral
* @note Deinitialization can be performed if the OPAMP configuration is locked.
* (the OPAMP lock is SW in STM32L1)
* @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 ongoing */
if((hopamp == NULL) || (hopamp->State == HAL_OPAMP_STATE_CALIBBUSY))
{
status = HAL_ERROR;
}
else
{
/* Check the parameter */
assert_param(IS_OPAMP_ALL_INSTANCE(hopamp->Instance));
/* Disable the selected opamp */
SET_BIT (OPAMP->CSR, OPAMP_CSR_OPAXPD(hopamp));
/* Open all switches on non-inverting input, inverting input and output */
/* feedback. */
/* Note: OPAMP register CSR is written directly, independently of OPAMP */
/* instance, because all OPAMP settings are dispatched in the same */
/* register. */
/* Settings of bits for each OPAMP instances are managed case by */
/* case using macro (OPAMP_CSR_S3SELX(), OPAMP_CSR_ANAWSELX(), ...) */
CLEAR_BIT(OPAMP->CSR, OPAMP_CSR_ALL_SWITCHES(hopamp));
/* Note: Registers and bits shared with other OPAMP instances are kept */
/* unchanged, to not impact other OPAMP while operating on the */
/* selected OPAMP. */
/* Unchanged: bit OPAMP_OTR_OT_USER (parameter "UserTrimming") */
/* bit OPAMP_CSR_AOP_RANGE (parameter "PowerSupplyRange")*/
/* DeInit the low level hardware: GPIO, CLOCK and NVIC */
HAL_OPAMP_MspDeInit(hopamp);
/* Update the OPAMP state*/
hopamp->State = HAL_OPAMP_STATE_RESET;
}
/* Process unlocked */
__HAL_UNLOCK(hopamp);
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 */
/* DeInit not allowed if calibration is ongoing */
if((hopamp == NULL) || (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: GPIO, CLOCK and NVIC */
/* When OPAMP is locked, unlocking can be achieved thanks to */
/* __HAL_RCC_SYSCFG_CLK_DISABLE() call within HAL_OPAMP_MspDeInit */
/* Note that __HAL_RCC_SYSCFG_CLK_DISABLE() also disables comparator */
HAL_OPAMP_MspDeInit(hopamp);
if (OPAMP_CSR_RESET_VALUE == hopamp->Instance->CSR)
{
/* Update the OPAMP state */
hopamp->State = HAL_OPAMP_STATE_RESET;
}
else /* RESET STATE */
{
/* DeInit not complete */
/* It can be the case if OPAMP was formerly locked */
status = HAL_ERROR;
/* The OPAMP state is NOT updated */
}
}
/* Process unlocked */
__HAL_UNLOCK(hopamp);
return status;
}