/**
* @brief Deinitializes the DAC peripheral registers to their default reset values.
* @param hdac: pointer to a DAC_HandleTypeDef structure that contains
* the configuration information for the specified DAC.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DAC_DeInit(DAC_HandleTypeDef* hdac)
{
/* Check DAC handle */
if(hdac == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_DAC_ALL_INSTANCE(hdac->Instance));
/* Change DAC state */
hdac->State = HAL_DAC_STATE_BUSY;
/* DeInit the low level hardware */
HAL_DAC_MspDeInit(hdac);
/* Set DAC error code to none */
hdac->ErrorCode = HAL_DAC_ERROR_NONE;
/* Change DAC state */
hdac->State = HAL_DAC_STATE_RESET;
/* Release Lock */
__HAL_UNLOCK(hdac);
/* Return function status */
return HAL_OK;
}
/**
* @brief Initializes the DAC peripheral according to the specified parameters
* in the DAC_InitStruct.
* @param hdac: pointer to a DAC_HandleTypeDef structure that contains
* the configuration information for the specified DAC.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DAC_Init(DAC_HandleTypeDef* hdac)
{
/* Check DAC handle */
if(hdac == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_DAC_ALL_INSTANCE(hdac->Instance));
if(hdac->State == HAL_DAC_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hdac->Lock = HAL_UNLOCKED;
/* Init the low level hardware */
HAL_DAC_MspInit(hdac);
}
/* Initialize the DAC state*/
hdac->State = HAL_DAC_STATE_BUSY;
/* Set DAC error code to none */
hdac->ErrorCode = HAL_DAC_ERROR_NONE;
/* Initialize the DAC state*/
hdac->State = HAL_DAC_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @brief De-initialize registers of the selected DAC instance
* to their default reset values.
* @param DACx DAC instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: DAC registers are de-initialized
* - ERROR: not applicable
*/
ErrorStatus LL_DAC_DeInit(DAC_TypeDef *DACx)
{
/* Check the parameters */
assert_param(IS_DAC_ALL_INSTANCE(DACx));
if(DACx == DAC1)
{
/* Force reset of DAC clock */
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_DAC1);
/* Release reset of DAC clock */
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_DAC1);
}
#if defined(DAC2)
else
{
/* Force reset of DAC clock */
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_DAC2);
/* Release reset of DAC clock */
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_DAC2);
}
#endif
return SUCCESS;
}
/**
* @brief De-initialize registers of the selected DAC instance
* to their default reset values.
* @param DACx DAC instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: DAC registers are de-initialized
* - ERROR: not applicable
*/
ErrorStatus LL_DAC_DeInit(DAC_TypeDef *DACx)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(DACx);
/* Check the parameters */
assert_param(IS_DAC_ALL_INSTANCE(DACx));
/* Force reset of DAC1 clock */
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_DAC1);
/* Release reset of DAC1 clock */
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_DAC1);
return SUCCESS;
}
/**
* @brief Initialize some features of DAC instance.
* @note The setting of these parameters by function @ref LL_DAC_Init()
* is conditioned to DAC state:
* DAC instance must be disabled.
* @param DACx DAC instance
* @param DAC_Channel This parameter can be one of the following values:
* @arg @ref LL_DAC_CHANNEL_1
* @arg @ref LL_DAC_CHANNEL_2 (1)
*
* (1) On this STM32 serie, parameter not available on all devices.
* Refer to device datasheet for channels availability.
* @param DAC_InitStruct Pointer to a @ref LL_DAC_InitTypeDef structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: DAC registers are initialized
* - ERROR: DAC registers are not initialized
*/
ErrorStatus LL_DAC_Init(DAC_TypeDef *DACx, uint32_t DAC_Channel, LL_DAC_InitTypeDef *DAC_InitStruct)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_DAC_ALL_INSTANCE(DACx));
assert_param(IS_LL_DAC_CHANNEL(DACx, DAC_Channel));
assert_param(IS_LL_DAC_TRIGGER_SOURCE(DAC_InitStruct->TriggerSource));
assert_param(IS_LL_DAC_OUTPUT_BUFFER(DAC_InitStruct->OutputBuffer));
#if defined(DAC_CR_WAVE1)
assert_param(IS_LL_DAC_WAVE_AUTO_GENER_MODE(DAC_InitStruct->WaveAutoGeneration));
if (DAC_InitStruct->WaveAutoGeneration != LL_DAC_WAVE_AUTO_GENERATION_NONE)
{
assert_param(IS_LL_DAC_WAVE_AUTO_GENER_CONFIG(DAC_InitStruct->WaveAutoGenerationConfig));
}
#endif
/* Note: Hardware constraint (refer to description of this function) */
/* DAC instance must be disabled. */
if(LL_DAC_IsEnabled(DACx, DAC_Channel) == 0U)
{
/* Configuration of DAC channel: */
/* - TriggerSource */
#if defined(DAC_CR_WAVE1)
/* - WaveAutoGeneration */
#endif
/* - OutputBuffer */
#if defined(DAC_CR_WAVE1)
if (DAC_InitStruct->WaveAutoGeneration != LL_DAC_WAVE_AUTO_GENERATION_NONE)
{
MODIFY_REG(DACx->CR,
( DAC_CR_TSEL1
| DAC_CR_WAVE1
| DAC_CR_MAMP1
| DAC_CR_BOFF1
) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
,
( DAC_InitStruct->TriggerSource
| DAC_InitStruct->WaveAutoGeneration
| DAC_InitStruct->WaveAutoGenerationConfig
| DAC_InitStruct->OutputBuffer
) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
);
}
else
{
MODIFY_REG(DACx->CR,
( DAC_CR_TSEL1
| DAC_CR_WAVE1
| DAC_CR_BOFF1
) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
,
( DAC_InitStruct->TriggerSource
| LL_DAC_WAVE_AUTO_GENERATION_NONE
| DAC_InitStruct->OutputBuffer
) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
);
}
#endif
}
else
{
/* Initialization error: DAC instance is not disabled. */
status = ERROR;
}
return status;
}
