Initialization and Configuration functions. More...

Collaboration diagram for Initialization and Configuration functions:

Functions
void	COMP_Cmd (uint32_t COMP_Selection, FunctionalState NewState)
	Enable or disable the COMP peripheral. More...

void	COMP_DeInit (uint32_t COMP_Selection)
	Deinitializes COMP peripheral registers to their default reset values. More...

uint32_t	COMP_GetOutputLevel (uint32_t COMP_Selection)
	Return the output level (high or low) of the selected comparator. The output level depends on the selected polarity. If the polarity is not inverted: More...

void	COMP_Init (uint32_t COMP_Selection, COMP_InitTypeDef *COMP_InitStruct)
	Initializes the COMP peripheral according to the specified parameters in COMP_InitStruct. More...

void	COMP_StructInit (COMP_InitTypeDef *COMP_InitStruct)
	Fills each COMP_InitStruct member with its default value. More...

void	COMP_SwitchCmd (uint32_t COMP_Selection, FunctionalState NewState)
	Close or Open the SW1 switch. More...

Detailed Description

Initialization and Configuration functions.

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            ##### Initialization and Configuration functions #####
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Function Documentation

void COMP_Cmd	(	uint32_t	COMP_Selection,
		FunctionalState	NewState
	)

Enable or disable the COMP peripheral.

Note: If the selected comparator is locked, enable/disable can't be performed. To unlock the configuration, perform a system reset.

Parameters

COMP_Selection	the selected comparator. This parameter can be COMP_Selection_COMPx where x can be 1 to 7 to select the COMP peripheral.
NewState	new state of the COMP peripheral. This parameter can be: ENABLE or DISABLE. When enabled, the comparator compares the non inverting input with the inverting input and the comparison result is available on comparator output. When disabled, the comparator doesn't perform comparison and the output level is low.

Return values

None

Definition at line 311 of file stm32f30x_comp.c.

void COMP_DeInit ( uint32_t COMP_Selection )

Deinitializes COMP peripheral registers to their default reset values.

Note: Deinitialization can't be performed if the COMP configuration is locked. To unlock the configuration, perform a system reset.

Parameters

COMP_Selection	the selected comparator. This parameter can be COMP_Selection_COMPx where x can be 1 to 7 to select the COMP peripheral.
None

Return values

None

< Set COMP_CSR register to reset value

Definition at line 214 of file stm32f30x_comp.c.

uint32_t COMP_GetOutputLevel ( uint32_t COMP_Selection )

Return the output level (high or low) of the selected comparator. The output level depends on the selected polarity. If the polarity is not inverted:

Comparator output is low when the non-inverting input is at a lower voltage than the inverting input
Comparator output is high when the non-inverting input is at a higher voltage than the inverting input If the polarity is inverted:
Comparator output is high when the non-inverting input is at a lower voltage than the inverting input
Comparator output is low when the non-inverting input is at a higher voltage than the inverting input
Parameters

COMP_Selection the selected comparator. This parameter can be COMP_Selection_COMPx where x can be 1 to 7 to select the COMP peripheral.

Return values

Returns the selected comparator output level: low or high.

Definition at line 377 of file stm32f30x_comp.c.

void COMP_Init	(	uint32_t	COMP_Selection,
		COMP_InitTypeDef *	COMP_InitStruct
	)

Initializes the COMP peripheral according to the specified parameters in COMP_InitStruct.

Note: If the selected comparator is locked, initialization can't be performed. To unlock the configuration, perform a system reset.; By default, PA1 is selected as COMP1 non inverting input. To use PA4 as COMP1 non inverting input call COMP_SwitchCmd() after COMP_Init()

Parameters

COMP_Selection the selected comparator. This parameter can be COMP_Selection_COMPx where x can be 1 to 7 to select the COMP peripheral.

COMP_InitStruct

pointer to an COMP_InitTypeDef structure that contains the configuration information for the specified COMP peripheral.

COMP_InvertingInput specifies the inverting input of COMP
COMP_NonInvertingInput specifies the non inverting input of COMP
COMP_Output connect COMP output to selected timer input (Input capture / Output Compare Reference Clear / Break Input)
COMP_BlankingSrce specifies the blanking source of COMP
COMP_OutputPol select output polarity
COMP_Hysteresis configures COMP hysteresis value
COMP_Mode configures COMP power mode

Return values

None

< Get the COMPx_CSR register value

< Clear the COMP1SW1, COMPxINSEL, COMPxOUTSEL, COMPxPOL, COMPxHYST and COMPxMODE bits

< Configure COMP: inverting input, output redirection, hysteresis value and power mode

< Set COMPxINSEL bits according to COMP_InitStruct->COMP_InvertingInput value

< Set COMPxNONINSEL bits according to COMP_InitStruct->COMP_NonInvertingInput value

< Set COMPxBLANKING bits according to COMP_InitStruct->COMP_BlankingSrce value

< Set COMPxOUTSEL bits according to COMP_InitStruct->COMP_Output value

< Set COMPxPOL bit according to COMP_InitStruct->COMP_OutputPol value

< Set COMPxHYST bits according to COMP_InitStruct->COMP_Hysteresis value

< Set COMPxMODE bits according to COMP_InitStruct->COMP_Mode value

< Write to COMPx_CSR register

Definition at line 242 of file stm32f30x_comp.c.

void COMP_StructInit ( COMP_InitTypeDef * COMP_InitStruct )

Fills each COMP_InitStruct member with its default value.

Parameters

COMP_InitStruct pointer to an COMP_InitTypeDef structure which will be initialized.

Return values

None

Definition at line 284 of file stm32f30x_comp.c.

void COMP_SwitchCmd	(	uint32_t	COMP_Selection,
		FunctionalState	NewState
	)

Close or Open the SW1 switch.

Note: If the COMP1 is locked, Close/Open the SW1 switch can't be performed. To unlock the configuration, perform a system reset.; This switch is solely intended to redirect signals onto high impedance input, such as COMP1 non-inverting input (highly resistive switch)

Parameters

NewState New state of the analog switch. This parameter can be ENABLE so the SW1 is closed; PA1 is connected to PA4 or DISABLE so the SW1 switch is open; PA1 is disconnected from PA4

Return values

None

Definition at line 341 of file stm32f30x_comp.c.

Functions

Detailed Description

Function Documentation