DAC

DAC driver modules. More...

Collaboration diagram for DAC:

Modules
	DAC_Exported_Constants
	DAC_Private_Functions

Data Structures
struct	DAC_InitTypeDef
	DAC Init structure definition. More...

Macros
#define	CR_CLEAR_MASK   ((uint32_t)0x00000FFE)
#define	DUAL_SWTRIG_SET   ((uint32_t)0x00000003)
#define	DUAL_SWTRIG_RESET   ((uint32_t)0xFFFFFFFC)
#define	DHR12R1_OFFSET   ((uint32_t)0x00000008)
#define	DHR12R2_OFFSET   ((uint32_t)0x00000014)
#define	DHR12RD_OFFSET   ((uint32_t)0x00000020)
#define	DOR_OFFSET   ((uint32_t)0x0000002C)

Functions
void	DAC_DeInit (void)
	Deinitializes the DAC peripheral registers to their default reset values. More...
void	DAC_Init (uint32_t DAC_Channel, DAC_InitTypeDef *DAC_InitStruct)
	Initializes the DAC peripheral according to the specified parameters in the DAC_InitStruct. More...
void	DAC_StructInit (DAC_InitTypeDef *DAC_InitStruct)
	Fills each DAC_InitStruct member with its default value. More...
void	DAC_Cmd (uint32_t DAC_Channel, FunctionalState NewState)
	Enables or disables the specified DAC channel. More...
void	DAC_SoftwareTriggerCmd (uint32_t DAC_Channel, FunctionalState NewState)
	Enables or disables the selected DAC channel software trigger. More...
void	DAC_DualSoftwareTriggerCmd (FunctionalState NewState)
	Enables or disables simultaneously the two DAC channels software triggers. More...
void	DAC_WaveGenerationCmd (uint32_t DAC_Channel, uint32_t DAC_Wave, FunctionalState NewState)
	Enables or disables the selected DAC channel wave generation. More...
void	DAC_SetChannel1Data (uint32_t DAC_Align, uint16_t Data)
	Set the specified data holding register value for DAC channel1. More...
void	DAC_SetChannel2Data (uint32_t DAC_Align, uint16_t Data)
	Set the specified data holding register value for DAC channel2. More...
void	DAC_SetDualChannelData (uint32_t DAC_Align, uint16_t Data2, uint16_t Data1)
	Set the specified data holding register value for dual channel DAC. More...
uint16_t	DAC_GetDataOutputValue (uint32_t DAC_Channel)
	Returns the last data output value of the selected DAC channel. More...
void	DAC_DMACmd (uint32_t DAC_Channel, FunctionalState NewState)
	Enables or disables the specified DAC channel DMA request. More...
void	DAC_ITConfig (uint32_t DAC_Channel, uint32_t DAC_IT, FunctionalState NewState)
	Enables or disables the specified DAC interrupts. More...
FlagStatus	DAC_GetFlagStatus (uint32_t DAC_Channel, uint32_t DAC_FLAG)
	Checks whether the specified DAC flag is set or not. More...
void	DAC_ClearFlag (uint32_t DAC_Channel, uint32_t DAC_FLAG)
	Clears the DAC channel's pending flags. More...
ITStatus	DAC_GetITStatus (uint32_t DAC_Channel, uint32_t DAC_IT)
	Checks whether the specified DAC interrupt has occurred or not. More...
void	DAC_ClearITPendingBit (uint32_t DAC_Channel, uint32_t DAC_IT)
	Clears the DAC channel's interrupt pending bits. More...

Detailed Description

DAC driver modules.

Function Documentation

void DAC_ClearFlag	(	uint32_t	DAC_Channel,
		uint32_t	DAC_FLAG
	)

Clears the DAC channel's pending flags.

Parameters

DAC_Channel	The selected DAC channel. This parameter can be one of the following values: DAC_Channel_1: DAC Channel1 selected DAC_Channel_2: DAC Channel2 selected
DAC_FLAG	specifies the flag to clear. This parameter can be of the following value: DAC_FLAG_DMAUDR: DMA underrun flag

Note

The DMA underrun occurs when a second external trigger arrives before the acknowledgement for the first external trigger is received (first request).

Return values

None

Definition at line 625 of file stm32f4xx_dac.c.

void DAC_ClearITPendingBit	(	uint32_t	DAC_Channel,
		uint32_t	DAC_IT
	)

Clears the DAC channel's interrupt pending bits.

Parameters

DAC_Channel	The selected DAC channel. This parameter can be one of the following values: DAC_Channel_1: DAC Channel1 selected DAC_Channel_2: DAC Channel2 selected
DAC_IT	specifies the DAC interrupt pending bit to clear. This parameter can be the following values: DAC_IT_DMAUDR: DMA underrun interrupt mask

Note

The DMA underrun occurs when a second external trigger arrives before the acknowledgement for the first external trigger is received (first request).

Return values

None

Definition at line 688 of file stm32f4xx_dac.c.

void DAC_Cmd	(	uint32_t	DAC_Channel,
		FunctionalState	NewState
	)

Enables or disables the specified DAC channel.

Parameters

DAC_Channel	The selected DAC channel. This parameter can be one of the following values: DAC_Channel_1: DAC Channel1 selected DAC_Channel_2: DAC Channel2 selected
NewState	new state of the DAC channel. This parameter can be: ENABLE or DISABLE.

Note

When the DAC channel is enabled the trigger source can no more be modified.

Return values

None

Definition at line 266 of file stm32f4xx_dac.c.

void DAC_DeInit

(

void

)

Deinitializes the DAC peripheral registers to their default reset values.

Parameters

None

Return values

None

Definition at line 187 of file stm32f4xx_dac.c.

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void DAC_DMACmd	(	uint32_t	DAC_Channel,
		FunctionalState	NewState
	)

Enables or disables the specified DAC channel DMA request.

Note

When enabled DMA1 is generated when an external trigger (EXTI Line9, TIM2, TIM4, TIM5, TIM6, TIM7 or TIM8 but not a software trigger) occurs.

Parameters

DAC_Channel	The selected DAC channel. This parameter can be one of the following values: DAC_Channel_1: DAC Channel1 selected DAC_Channel_2: DAC Channel2 selected
NewState	new state of the selected DAC channel DMA request. This parameter can be: ENABLE or DISABLE.

Note

The DAC channel1 is mapped on DMA1 Stream 5 channel7 which must be already configured.

The DAC channel2 is mapped on DMA1 Stream 6 channel7 which must be already configured.

Return values

None

Definition at line 510 of file stm32f4xx_dac.c.

void DAC_DualSoftwareTriggerCmd

(

FunctionalState

NewState

)

Enables or disables simultaneously the two DAC channels software triggers.

Parameters

NewState

new state of the DAC channels software triggers. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 318 of file stm32f4xx_dac.c.

uint16_t DAC_GetDataOutputValue

(

uint32_t

DAC_Channel

)

Returns the last data output value of the selected DAC channel.

Parameters

DAC_Channel

The selected DAC channel. This parameter can be one of the following values: DAC_Channel_1: DAC Channel1 selected DAC_Channel_2: DAC Channel2 selected

Return values

The	selected DAC channel data output value.

Definition at line 465 of file stm32f4xx_dac.c.

FlagStatus DAC_GetFlagStatus	(	uint32_t	DAC_Channel,
		uint32_t	DAC_FLAG
	)

Checks whether the specified DAC flag is set or not.

Parameters

DAC_Channel	The selected DAC channel. This parameter can be one of the following values: DAC_Channel_1: DAC Channel1 selected DAC_Channel_2: DAC Channel2 selected
DAC_FLAG	specifies the flag to check. This parameter can be only of the following value: DAC_FLAG_DMAUDR: DMA underrun flag

Note

The DMA underrun occurs when a second external trigger arrives before the acknowledgement for the first external trigger is received (first request).

Return values

The	new state of DAC_FLAG (SET or RESET).

Definition at line 590 of file stm32f4xx_dac.c.

ITStatus DAC_GetITStatus	(	uint32_t	DAC_Channel,
		uint32_t	DAC_IT
	)

Checks whether the specified DAC interrupt has occurred or not.

Parameters

DAC_Channel	The selected DAC channel. This parameter can be one of the following values: DAC_Channel_1: DAC Channel1 selected DAC_Channel_2: DAC Channel2 selected
DAC_IT	specifies the DAC interrupt source to check. This parameter can be the following values: DAC_IT_DMAUDR: DMA underrun interrupt mask

Note

The DMA underrun occurs when a second external trigger arrives before the acknowledgement for the first external trigger is received (first request).

Return values

The	new state of DAC_IT (SET or RESET).

Definition at line 648 of file stm32f4xx_dac.c.

void DAC_Init	(	uint32_t	DAC_Channel,
		DAC_InitTypeDef *	DAC_InitStruct
	)

Initializes the DAC peripheral according to the specified parameters in the DAC_InitStruct.

Parameters

DAC_Channel	the selected DAC channel. This parameter can be one of the following values: DAC_Channel_1: DAC Channel1 selected DAC_Channel_2: DAC Channel2 selected
DAC_InitStruct	pointer to a DAC_InitTypeDef structure that contains the configuration information for the specified DAC channel.

Return values

None

Definition at line 206 of file stm32f4xx_dac.c.

void DAC_ITConfig	(	uint32_t	DAC_Channel,
		uint32_t	DAC_IT,
		FunctionalState	NewState
	)

Enables or disables the specified DAC interrupts.

Parameters

DAC_Channel	The selected DAC channel. This parameter can be one of the following values: DAC_Channel_1: DAC Channel1 selected DAC_Channel_2: DAC Channel2 selected
DAC_IT	specifies the DAC interrupt sources to be enabled or disabled. This parameter can be the following values: DAC_IT_DMAUDR: DMA underrun interrupt mask

Note

The DMA underrun occurs when a second external trigger arrives before the acknowledgement for the first external trigger is received (first request).

Parameters

NewState

new state of the specified DAC interrupts. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 558 of file stm32f4xx_dac.c.

void DAC_SetChannel1Data	(	uint32_t	DAC_Align,
		uint16_t	Data
	)

Set the specified data holding register value for DAC channel1.

Parameters

DAC_Align	Specifies the data alignment for DAC channel1. This parameter can be one of the following values: DAC_Align_8b_R: 8bit right data alignment selected DAC_Align_12b_L: 12bit left data alignment selected DAC_Align_12b_R: 12bit right data alignment selected
Data	Data to be loaded in the selected data holding register.

Return values

None

Definition at line 378 of file stm32f4xx_dac.c.

void DAC_SetChannel2Data	(	uint32_t	DAC_Align,
		uint16_t	Data
	)

Set the specified data holding register value for DAC channel2.

Parameters

DAC_Align	Specifies the data alignment for DAC channel2. This parameter can be one of the following values: DAC_Align_8b_R: 8bit right data alignment selected DAC_Align_12b_L: 12bit left data alignment selected DAC_Align_12b_R: 12bit right data alignment selected
Data	Data to be loaded in the selected data holding register.

Return values

None

Definition at line 403 of file stm32f4xx_dac.c.

void DAC_SetDualChannelData	(	uint32_t	DAC_Align,
		uint16_t	Data2,
		uint16_t	Data1
	)

Set the specified data holding register value for dual channel DAC.

Parameters

DAC_Align	Specifies the data alignment for dual channel DAC. This parameter can be one of the following values: DAC_Align_8b_R: 8bit right data alignment selected DAC_Align_12b_L: 12bit left data alignment selected DAC_Align_12b_R: 12bit right data alignment selected
Data2	Data for DAC Channel2 to be loaded in the selected data holding register.
Data1	Data for DAC Channel1 to be loaded in the selected data holding register.

Note

In dual mode, a unique register access is required to write in both DAC channels at the same time.

Return values

None

Definition at line 431 of file stm32f4xx_dac.c.

void DAC_SoftwareTriggerCmd	(	uint32_t	DAC_Channel,
		FunctionalState	NewState
	)

Enables or disables the selected DAC channel software trigger.

Parameters

DAC_Channel	The selected DAC channel. This parameter can be one of the following values: DAC_Channel_1: DAC Channel1 selected DAC_Channel_2: DAC Channel2 selected
NewState	new state of the selected DAC channel software trigger. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 294 of file stm32f4xx_dac.c.

void DAC_StructInit

(

DAC_InitTypeDef *

DAC_InitStruct

)

Fills each DAC_InitStruct member with its default value.

Parameters

DAC_InitStruct

pointer to a DAC_InitTypeDef structure which will be initialized.

Return values

None

Definition at line 242 of file stm32f4xx_dac.c.

void DAC_WaveGenerationCmd	(	uint32_t	DAC_Channel,
		uint32_t	DAC_Wave,
		FunctionalState	NewState
	)

Enables or disables the selected DAC channel wave generation.

Parameters

DAC_Channel	The selected DAC channel. This parameter can be one of the following values: DAC_Channel_1: DAC Channel1 selected DAC_Channel_2: DAC Channel2 selected
DAC_Wave	specifies the wave type to enable or disable. This parameter can be one of the following values: DAC_Wave_Noise: noise wave generation DAC_Wave_Triangle: triangle wave generation
NewState	new state of the selected DAC channel wave generation. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 349 of file stm32f4xx_dac.c.