/**
* @brief De-initialize registers of the selected COMP instance
* to their default reset values.
* @note If comparator is locked, de-initialization by software is
* not possible.
* The only way to unlock the comparator is a device hardware reset.
* @param COMPx COMP instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: COMP registers are de-initialized
* - ERROR: COMP registers are not de-initialized
*/
ErrorStatus LL_COMP_DeInit(COMP_TypeDef *COMPx)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_COMP_ALL_INSTANCE(COMPx));
/* Note: Hardware constraint (refer to description of this function): */
/* COMP instance must not be locked. */
if(LL_COMP_IsLocked(COMPx) == 0U)
{
/* Note: Connection switch is applicable only to COMP instance COMP1, */
/* therefore is COMP2 is selected the equivalent bit is */
/* kept unmodified. */
if(COMPx == COMP1)
{
CLEAR_BIT(COMP->CSR,
( COMP_CSR_COMP1MODE
| COMP_CSR_COMP1INSEL
| COMP_CSR_COMP1SW1
| COMP_CSR_COMP1OUTSEL
| COMP_CSR_COMP1HYST
| COMP_CSR_COMP1POL
| COMP_CSR_COMP1EN
) << __COMP_BITOFFSET_INSTANCE(COMPx)
);
}
else
{
CLEAR_BIT(COMP->CSR,
( COMP_CSR_COMP1MODE
| COMP_CSR_COMP1INSEL
| COMP_CSR_COMP1OUTSEL
| COMP_CSR_COMP1HYST
| COMP_CSR_COMP1POL
| COMP_CSR_COMP1EN
) << __COMP_BITOFFSET_INSTANCE(COMPx)
);
}
}
else
{
/* Comparator instance is locked: de-initialization by software is */
/* not possible. */
/* The only way to unlock the comparator is a device hardware reset. */
status = ERROR;
}
return status;
}
/**
* @brief Initialize some features of COMP instance.
* @note This function configures features of the selected COMP instance.
* Some features are also available at scope COMP common instance
* (common to several COMP instances).
* Refer to functions having argument "COMPxy_COMMON" as parameter.
* @param COMPx COMP instance
* @param COMP_InitStruct Pointer to a @ref LL_COMP_InitTypeDef structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: COMP registers are initialized
* - ERROR: COMP registers are not initialized
*/
ErrorStatus LL_COMP_Init(COMP_TypeDef *COMPx, LL_COMP_InitTypeDef *COMP_InitStruct)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_COMP_ALL_INSTANCE(COMPx));
assert_param(IS_LL_COMP_POWER_MODE(COMP_InitStruct->PowerMode));
assert_param(IS_LL_COMP_INPUT_MINUS(COMPx, COMP_InitStruct->InputMinus));
assert_param(IS_LL_COMP_INPUT_PLUS(COMPx, COMP_InitStruct->InputPlus));
assert_param(IS_LL_COMP_INPUT_HYSTERESIS(COMP_InitStruct->InputHysteresis));
assert_param(IS_LL_COMP_OUTPUT_POLARITY(COMP_InitStruct->OutputPolarity));
assert_param(IS_LL_COMP_OUTPUT_BLANKING_SOURCE(COMP_InitStruct->OutputBlankingSource));
/* Note: Hardware constraint (refer to description of this function) */
/* COMP instance must not be locked. */
if(LL_COMP_IsLocked(COMPx) == 0)
{
/* Configuration of comparator instance : */
/* - PowerMode */
/* - InputPlus */
/* - InputMinus */
/* - InputHysteresis */
/* - OutputPolarity */
/* - OutputBlankingSource */
MODIFY_REG(COMPx->CSR,
COMP_CSR_PWRMODE
| COMP_CSR_INPSEL
| COMP_CSR_SCALEN
| COMP_CSR_BRGEN
| COMP_CSR_INMSEL
| COMP_CSR_HYST
| COMP_CSR_POLARITY
| COMP_CSR_BLANKING
,
COMP_InitStruct->PowerMode
| COMP_InitStruct->InputPlus
| COMP_InitStruct->InputMinus
| COMP_InitStruct->InputHysteresis
| COMP_InitStruct->OutputPolarity
| COMP_InitStruct->OutputBlankingSource
);
}
else
{
/* Initialization error: COMP instance is locked. */
status = ERROR;
}
return status;
}
/**
* @brief De-initialize registers of the selected COMP instance
* to their default reset values.
* @note If comparator is locked, de-initialization by software is
* not possible.
* The only way to unlock the comparator is a device hardware reset.
* @param COMPx COMP instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: COMP registers are de-initialized
* - ERROR: COMP registers are not de-initialized
*/
ErrorStatus LL_COMP_DeInit(COMP_TypeDef *COMPx)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_COMP_ALL_INSTANCE(COMPx));
/* Note: Hardware constraint (refer to description of this function): */
/* COMP instance must not be locked. */
if(LL_COMP_IsLocked(COMPx) == 0U)
{
LL_COMP_WriteReg(COMPx, CSR, 0x00000000U);
}
else
{
/* Comparator instance is locked: de-initialization by software is */
/* not possible. */
/* The only way to unlock the comparator is a device hardware reset. */
status = ERROR;
}
return status;
}
/**
* @brief Initialize some features of COMP instance.
* @note This function configures features of the selected COMP instance.
* Some features are also available at scope COMP common instance
* (common to several COMP instances).
* Refer to functions having argument "COMPxy_COMMON" as parameter.
* @param COMPx COMP instance
* @param COMP_InitStruct Pointer to a @ref LL_COMP_InitTypeDef structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: COMP registers are initialized
* - ERROR: COMP registers are not initialized
*/
ErrorStatus LL_COMP_Init(COMP_TypeDef *COMPx, LL_COMP_InitTypeDef *COMP_InitStruct)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_COMP_ALL_INSTANCE(COMPx));
assert_param(IS_LL_COMP_POWER_MODE(COMP_InitStruct->PowerMode));
assert_param(IS_LL_COMP_INPUT_PLUS(COMPx, COMP_InitStruct->InputPlus));
assert_param(IS_LL_COMP_INPUT_MINUS(COMPx, COMP_InitStruct->InputMinus));
assert_param(IS_LL_COMP_INPUT_HYSTERESIS(COMP_InitStruct->InputHysteresis));
assert_param(IS_LL_COMP_OUTPUT_SELECTION(COMP_InitStruct->OutputSelection));
assert_param(IS_LL_COMP_OUTPUT_POLARITY(COMP_InitStruct->OutputPolarity));
/* Note: Hardware constraint (refer to description of this function) */
/* COMP instance must not be locked. */
if(LL_COMP_IsLocked(COMPx) == 0U)
{
/* Configuration of comparator instance : */
/* - PowerMode */
/* - InputPlus */
/* - InputMinus */
/* - InputHysteresis */
/* - OutputSelection */
/* - OutputPolarity */
/* Note: Connection switch is applicable only to COMP instance COMP1, */
/* therefore is COMP2 is selected the equivalent bit is */
/* kept unmodified. */
if(COMPx == COMP1)
{
MODIFY_REG(COMP->CSR,
( COMP_CSR_COMP1MODE
| COMP_CSR_COMP1INSEL
| COMP_CSR_COMP1SW1
| COMP_CSR_COMP1OUTSEL
| COMP_CSR_COMP1HYST
| COMP_CSR_COMP1POL
) << __COMP_BITOFFSET_INSTANCE(COMPx)
,
( COMP_InitStruct->PowerMode
| COMP_InitStruct->InputPlus
| COMP_InitStruct->InputMinus
| COMP_InitStruct->InputHysteresis
| COMP_InitStruct->OutputSelection
| COMP_InitStruct->OutputPolarity
) << __COMP_BITOFFSET_INSTANCE(COMPx)
);
}
else
{
MODIFY_REG(COMP->CSR,
( COMP_CSR_COMP1MODE
| COMP_CSR_COMP1INSEL
| COMP_CSR_COMP1OUTSEL
| COMP_CSR_COMP1HYST
| COMP_CSR_COMP1POL
) << __COMP_BITOFFSET_INSTANCE(COMPx)
,
( COMP_InitStruct->PowerMode
| COMP_InitStruct->InputPlus
| COMP_InitStruct->InputMinus
| COMP_InitStruct->InputHysteresis
| COMP_InitStruct->OutputSelection
| COMP_InitStruct->OutputPolarity
) << __COMP_BITOFFSET_INSTANCE(COMPx)
);
}
}
else
{
/* Initialization error: COMP instance is locked. */
status = ERROR;
}
return status;
}