Functions
uint32_t	CAPLESENSE_getNormalizedVal (uint8_t channel)
	Get the current normalized channelValue for a channel.

uint8_t	CAPLESENSE_getSegmentChannel (uint8_t capSegment)
	Get the channelValue for a sensor segment.

int32_t	CAPLESENSE_getSliderPosition (void)
	Get the position of the slider.

uint32_t	CAPLESENSE_getVal (uint8_t channel)
	Get the current channelValue for a channel.

void	CAPLESENSE_Init (bool sleep)
	Initializes the capacative sense system without LESENSE.

void	CAPLESENSE_setupCallbacks (void(scanCb)(void), void(chCb)(void))
	LESENSE callback setup.

void	CAPLESENSE_setupLESENSE (bool sleep)
	Setup the LESENSE for capavitive sensing.

void	CAPLESENSE_Sleep (void)
	Send the capacative sense system to sleep mode.

uint32_t	CAPSENSE_getNormalizedVal (uint8_t channel)
	Get the current normalized channelValue for a channel.

bool	CAPSENSE_getPressed (uint8_t channel)
	Get the state of the Gecko Button.

int32_t	CAPSENSE_getSliderPosition (void)
	Get the position of the slider.

uint32_t	CAPSENSE_getVal (uint8_t channel)
	Get the current channelValue for a channel.

void	CAPSENSE_Init (void)
	Initializes the capacitive sense system.

void	CAPSENSE_Sense (void)
	This function iterates through all the capsensors and reads and initiates a reading. Uses EM1 while waiting for the result from each sensor.

Function Documentation

uint32_t CAPLESENSE_getNormalizedVal ( uint8_t channel )

Get the current normalized channelValue for a channel.

Parameters

channel The channel.

Returns: The channel value in range (0-256).

Definition at line 425 of file caplesense.c .

References channelMaxValues , and channelValues .

uint8_t CAPLESENSE_getSegmentChannel ( uint8_t capSegment )

Get the channelValue for a sensor segment.

Parameters

capSegment

Returns: channel

Definition at line 389 of file caplesense.c .

int32_t CAPLESENSE_getSliderPosition ( void )

Get the position of the slider.

Returns: The position of the slider if it can be determined, -1 otherwise.

Definition at line 436 of file caplesense.c .

References channelMaxValues , and channelValues .

uint32_t CAPLESENSE_getVal ( uint8_t channel )

Get the current channelValue for a channel.

Parameters

channel The channel.

Returns: The channelValue.

Definition at line 415 of file caplesense.c .

References channelValues .

void CAPLESENSE_Init ( bool sleep )

Initializes the capacative sense system without LESENSE.

Parameters

sleep If true, go into sleep mode.

Definition at line 501 of file caplesense.c .

References CAPLESENSE_setupACMP() , CAPLESENSE_setupCMU() , CAPLESENSE_setupGPIO() , CAPLESENSE_setupLESENSE() , CORE_DECLARE_IRQ_STATE , CORE_ENTER_ATOMIC , and CORE_EXIT_ATOMIC .

void CAPLESENSE_setupCallbacks	(	void(*)(void)	`scanCb,`
		void(*)(void)	`chCb`
	)

LESENSE callback setup.

Parameters

`scanCb`	Scan callback
`chCb`	Channel callback

Definition at line 330 of file caplesense.c .

References lesenseChCb , and lesenseScanCb .

void CAPLESENSE_setupLESENSE ( bool sleep )

Setup the LESENSE for capavitive sensing.

Parameters

sleep If true, go into sleep mode.

Definition at line 163 of file caplesense.c .

References channelsInUse .

Referenced by CAPLESENSE_Init() .

uint32_t CAPSENSE_getNormalizedVal ( uint8_t channel )

Get the current normalized channelValue for a channel.

Parameters

channel The channel.

Returns: The channel value in range (0-256).

Definition at line 132 of file capsense.c .

References channelMaxValues , and channelValues .

bool CAPSENSE_getPressed ( uint8_t channel )

Get the state of the Gecko Button.

Parameters

channel The channel.

Returns: true if the button is "pressed" false otherwise.

Definition at line 144 of file capsense.c .

References channelMaxValues , and channelValues .

int32_t CAPSENSE_getSliderPosition ( void )

Get the position of the slider.

Returns: The position of the slider if it can be determined, -1 otherwise.

Definition at line 164 of file capsense.c .

References channelMaxValues , and channelValues .

uint32_t CAPSENSE_getVal ( uint8_t channel )

Get the current channelValue for a channel.

Parameters

channel The channel.

Returns: The channelValue.

Definition at line 122 of file capsense.c .

References channelValues .

void CAPSENSE_Init ( void )

Initializes the capacitive sense system.

Capacitive sensing uses two timers: TIMER0 and TIMER1 as well as ACMP. ACMP is set up in cap-sense (oscillator mode). TIMER1 counts the number of pulses generated by ACMP_CAPSENSE. When TIMER0 expires it generates an interrupt. The number of pulses counted by TIMER1 is then stored in channelValues

Definition at line 284 of file capsense.c .

References CMU , CMU_ClockEnable() , cmuClock_HFPER , cmuClock_PRS , cmuClock_TIMER0 , cmuClock_TIMER1 , PRS , PRS_CH_CTRL_EDSEL_POSEDGE , TIMER0 , TIMER0_IRQn , TIMER1 , TIMER_CC_CTRL_ICEDGE_BOTH , TIMER_CC_CTRL_ICEVCTRL_RISING , TIMER_CC_CTRL_INSEL_PRS , TIMER_CC_CTRL_MODE_INPUTCAPTURE , TIMER_CC_CTRL_PRSSEL_PRSCH0 , TIMER_CTRL_CLKSEL_CC1 , TIMER_CTRL_PRESC_DIV1024 , TIMER_CTRL_PRESC_DIV512 , and TIMER_IEN_OF .

CapSenseKit Drivers

Functions

Function Documentation