Overview

The MCUXpresso SDK provides a driver for the Touch Sensing Input (TSI) module of MCUXpresso SDK devices.

Typical use case

TSI Operation

TSI_Init(TSI0);
TSI_Configure(TSI0, &user_config);
TSI_EnableChannel(TSI0, channelMask);
TSI_EnableInterrupts(TSI0, kTSI_GlobalInterruptEnable | kTSI_EndOfScanInterruptEnable);
TSI_EnablePeriodicalScan(TSI0);
TSI_EnableModule(TSI0);
while(1);

Data Structures
struct	tsi_calibration_data_t
	TSI calibration data storage. More...

struct	tsi_config_t
	TSI configuration structure. More...

Macros
#define	ALL_FLAGS_MASK
	TSI status flags macro collection.

Enumerations
enum	tsi_n_consecutive_scans_t { kTSI_ConsecutiveScansNumber_1time = 0U, kTSI_ConsecutiveScansNumber_2time = 1U, kTSI_ConsecutiveScansNumber_3time = 2U, kTSI_ConsecutiveScansNumber_4time = 3U, kTSI_ConsecutiveScansNumber_5time = 4U, kTSI_ConsecutiveScansNumber_6time = 5U, kTSI_ConsecutiveScansNumber_7time = 6U, kTSI_ConsecutiveScansNumber_8time = 7U, kTSI_ConsecutiveScansNumber_9time = 8U, kTSI_ConsecutiveScansNumber_10time = 9U, kTSI_ConsecutiveScansNumber_11time = 10U, kTSI_ConsecutiveScansNumber_12time = 11U, kTSI_ConsecutiveScansNumber_13time = 12U, kTSI_ConsecutiveScansNumber_14time = 13U, kTSI_ConsecutiveScansNumber_15time = 14U, kTSI_ConsecutiveScansNumber_16time = 15U, kTSI_ConsecutiveScansNumber_17time = 16U, kTSI_ConsecutiveScansNumber_18time = 17U, kTSI_ConsecutiveScansNumber_19time = 18U, kTSI_ConsecutiveScansNumber_20time = 19U, kTSI_ConsecutiveScansNumber_21time = 20U, kTSI_ConsecutiveScansNumber_22time = 21U, kTSI_ConsecutiveScansNumber_23time = 22U, kTSI_ConsecutiveScansNumber_24time = 23U, kTSI_ConsecutiveScansNumber_25time = 24U, kTSI_ConsecutiveScansNumber_26time = 25U, kTSI_ConsecutiveScansNumber_27time = 26U, kTSI_ConsecutiveScansNumber_28time = 27U, kTSI_ConsecutiveScansNumber_29time = 28U, kTSI_ConsecutiveScansNumber_30time = 29U, kTSI_ConsecutiveScansNumber_31time = 30U, kTSI_ConsecutiveScansNumber_32time = 31U }
	TSI number of scan intervals for each electrode. More...

enum	tsi_electrode_osc_prescaler_t { kTSI_ElecOscPrescaler_1div = 0U, kTSI_ElecOscPrescaler_2div = 1U, kTSI_ElecOscPrescaler_4div = 2U, kTSI_ElecOscPrescaler_8div = 3U, kTSI_ElecOscPrescaler_16div = 4U, kTSI_ElecOscPrescaler_32div = 5U, kTSI_ElecOscPrescaler_64div = 6U, kTSI_ElecOscPrescaler_128div = 7U }
	TSI electrode oscillator prescaler. More...

enum	tsi_low_power_clock_source_t { kTSI_LowPowerClockSource_LPOCLK = 0U, kTSI_LowPowerClockSource_VLPOSCCLK = 1U }
	TSI low power mode clock source. More...

enum	tsi_low_power_scan_interval_t { kTSI_LowPowerInterval_1ms = 0U, kTSI_LowPowerInterval_5ms = 1U, kTSI_LowPowerInterval_10ms = 2U, kTSI_LowPowerInterval_15ms = 3U, kTSI_LowPowerInterval_20ms = 4U, kTSI_LowPowerInterval_30ms = 5U, kTSI_LowPowerInterval_40ms = 6U, kTSI_LowPowerInterval_50ms = 7U, kTSI_LowPowerInterval_75ms = 8U, kTSI_LowPowerInterval_100ms = 9U, kTSI_LowPowerInterval_125ms = 10U, kTSI_LowPowerInterval_150ms = 11U, kTSI_LowPowerInterval_200ms = 12U, kTSI_LowPowerInterval_300ms = 13U, kTSI_LowPowerInterval_400ms = 14U, kTSI_LowPowerInterval_500ms = 15U }
	TSI low power scan intervals. More...

enum	tsi_reference_osc_charge_current_t { kTSI_RefOscChargeCurrent_2uA = 0U, kTSI_RefOscChargeCurrent_4uA = 1U, kTSI_RefOscChargeCurrent_6uA = 2U, kTSI_RefOscChargeCurrent_8uA = 3U, kTSI_RefOscChargeCurrent_10uA = 4U, kTSI_RefOscChargeCurrent_12uA = 5U, kTSI_RefOscChargeCurrent_14uA = 6U, kTSI_RefOscChargeCurrent_16uA = 7U, kTSI_RefOscChargeCurrent_18uA = 8U, kTSI_RefOscChargeCurrent_20uA = 9U, kTSI_RefOscChargeCurrent_22uA = 10U, kTSI_RefOscChargeCurrent_24uA = 11U, kTSI_RefOscChargeCurrent_26uA = 12U, kTSI_RefOscChargeCurrent_28uA = 13U, kTSI_RefOscChargeCurrent_30uA = 14U, kTSI_RefOscChargeCurrent_32uA = 15U }
	TSI Reference oscillator charge current select. More...

enum	tsi_external_osc_charge_current_t { kTSI_ExtOscChargeCurrent_2uA = 0U, kTSI_ExtOscChargeCurrent_4uA = 1U, kTSI_ExtOscChargeCurrent_6uA = 2U, kTSI_ExtOscChargeCurrent_8uA = 3U, kTSI_ExtOscChargeCurrent_10uA = 4U, kTSI_ExtOscChargeCurrent_12uA = 5U, kTSI_ExtOscChargeCurrent_14uA = 6U, kTSI_ExtOscChargeCurrent_16uA = 7U, kTSI_ExtOscChargeCurrent_18uA = 8U, kTSI_ExtOscChargeCurrent_20uA = 9U, kTSI_ExtOscChargeCurrent_22uA = 10U, kTSI_ExtOscChargeCurrent_24uA = 11U, kTSI_ExtOscChargeCurrent_26uA = 12U, kTSI_ExtOscChargeCurrent_28uA = 13U, kTSI_ExtOscChargeCurrent_30uA = 14U, kTSI_ExtOscChargeCurrent_32uA = 15U }
	TSI External oscillator charge current select. More...

enum	tsi_active_mode_clock_source_t { kTSI_ActiveClkSource_LPOSCCLK = 0U, kTSI_ActiveClkSource_MCGIRCLK = 1U, kTSI_ActiveClkSource_OSCERCLK = 2U }
	TSI Active mode clock source. More...

enum	tsi_active_mode_prescaler_t { kTSI_ActiveModePrescaler_1div = 0U, kTSI_ActiveModePrescaler_2div = 1U, kTSI_ActiveModePrescaler_4div = 2U, kTSI_ActiveModePrescaler_8div = 3U, kTSI_ActiveModePrescaler_16div = 4U, kTSI_ActiveModePrescaler_32div = 5U, kTSI_ActiveModePrescaler_64div = 6U, kTSI_ActiveModePrescaler_128div = 7U }
	TSI active mode prescaler. More...

enum	tsi_status_flags_t { kTSI_EndOfScanFlag = TSI_GENCS_EOSF_MASK, kTSI_OutOfRangeFlag = TSI_GENCS_OUTRGF_MASK, kTSI_ExternalElectrodeErrorFlag = TSI_GENCS_EXTERF_MASK, kTSI_OverrunErrorFlag = TSI_GENCS_OVRF_MASK }
	TSI status flags. More...

enum	tsi_interrupt_enable_t { kTSI_GlobalInterruptEnable = 1U, kTSI_OutOfRangeInterruptEnable = 2U, kTSI_EndOfScanInterruptEnable = 4U, kTSI_ErrorInterrruptEnable = 8U }
	TSI feature interrupt source. More...

Functions
void	TSI_Init (TSI_Type base, const tsi_config_t config)
	Initializes hardware. More...

void	TSI_Deinit (TSI_Type *base)
	De-initializes hardware. More...

void	TSI_GetNormalModeDefaultConfig (tsi_config_t *userConfig)
	Gets TSI normal mode user configuration structure. More...

void	TSI_GetLowPowerModeDefaultConfig (tsi_config_t *userConfig)
	Gets the TSI low power mode default user configuration structure. More...

void	TSI_Calibrate (TSI_Type base, tsi_calibration_data_t calBuff)
	Hardware calibration. More...

void	TSI_EnableInterrupts (TSI_Type *base, uint32_t mask)
	Enables the TSI interrupt requests. More...

void	TSI_DisableInterrupts (TSI_Type *base, uint32_t mask)
	Disables the TSI interrupt requests. More...

static uint32_t	TSI_GetStatusFlags (TSI_Type *base)
	Gets the interrupt flags. More...

void	TSI_ClearStatusFlags (TSI_Type *base, uint32_t mask)
	Clears the interrupt flags. More...

static uint32_t	TSI_GetScanTriggerMode (TSI_Type *base)
	Gets the TSI scan trigger mode. More...

static bool	TSI_IsScanInProgress (TSI_Type *base)
	Gets the scan in progress flag. More...

static void	TSI_SetElectrodeOSCPrescaler (TSI_Type *base, tsi_electrode_osc_prescaler_t prescaler)
	Sets the electrode oscillator prescaler. More...

static void	TSI_SetNumberOfScans (TSI_Type *base, tsi_n_consecutive_scans_t number)
	Sets the number of scans (NSCN). More...

static void	TSI_EnableModule (TSI_Type *base, bool enable)
	Enables/disables the TSI module. More...

static void	TSI_EnableLowPower (TSI_Type *base, bool enable)
	Enables/disables the TSI module in low power stop mode. More...

static void	TSI_EnablePeriodicalScan (TSI_Type *base, bool enable)
	Enables/disables the periodical (hardware) trigger scan. More...

static void	TSI_StartSoftwareTrigger (TSI_Type *base)
	Starts a measurement (trigger a new measurement). More...

static void	TSI_SetLowPowerScanInterval (TSI_Type *base, tsi_low_power_scan_interval_t interval)
	Sets a low power scan interval. More...

static void	TSI_SetLowPowerClock (TSI_Type *base, uint32_t clock)
	Sets a low power clock. More...

static void	TSI_SetReferenceChargeCurrent (TSI_Type *base, tsi_reference_osc_charge_current_t current)
	Sets the reference oscillator charge current. More...

static void	TSI_SetElectrodeChargeCurrent (TSI_Type *base, tsi_external_osc_charge_current_t current)
	Sets the electrode charge current. More...

static void	TSI_SetScanModulo (TSI_Type *base, uint32_t modulo)
	Sets the scan modulo value. More...

static void	TSI_SetActiveModeSource (TSI_Type *base, uint32_t source)
	Sets the active mode source. More...

static void	TSI_SetActiveModePrescaler (TSI_Type *base, tsi_active_mode_prescaler_t prescaler)
	Sets the active mode prescaler. More...

static void	TSI_SetLowPowerChannel (TSI_Type *base, uint16_t channel)
	Sets the low power channel. More...

static uint32_t	TSI_GetLowPowerChannel (TSI_Type *base)
	Gets the enabled channel in low power modes. More...

static void	TSI_EnableChannel (TSI_Type *base, uint16_t channel, bool enable)
	Enables/disables a channel. More...

static void	TSI_EnableChannels (TSI_Type *base, uint16_t channelsMask, bool enable)
	Enables/disables channels. More...

static bool	TSI_IsChannelEnabled (TSI_Type *base, uint16_t channel)
	Returns if a channel is enabled. More...

static uint16_t	TSI_GetEnabledChannels (TSI_Type *base)
	Returns the mask of enabled channels. More...

static uint16_t	TSI_GetWakeUpChannelCounter (TSI_Type *base)
	Gets the wake up channel counter for low-power mode usage. More...

static uint16_t	TSI_GetNormalModeCounter (TSI_Type *base, uint16_t channel)
	Gets the TSI conversion counter of a specific channel in normal mode. More...

static void	TSI_SetLowThreshold (TSI_Type *base, uint16_t low_threshold)
	Sets a low threshold. More...

static void	TSI_SetHighThreshold (TSI_Type *base, uint16_t high_threshold)
	Sets a high threshold. More...

Driver version
#define	FSL_TSI_DRIVER_VERSION (MAKE_VERSION(2, 1, 2))
	TSI driver version.

Data Structure Documentation

struct tsi_calibration_data_t

Data Fields
uint16_t	calibratedData [FSL_FEATURE_TSI_CHANNEL_COUNT]
	TSI calibration data storage buffer.

struct tsi_config_t

This structure contains the settings for the most common TSI configurations including the TSI module charge currents, number of scans, thresholds, and so on.

Data Fields
uint16_t	thresh
	High threshold. More...

uint16_t	thresl
	Low threshold. More...

tsi_low_power_clock_source_t	lpclks
	Low power clock. More...

tsi_low_power_scan_interval_t	lpscnitv
	Low power scan interval. More...

tsi_active_mode_clock_source_t	amclks
	Active mode clock source. More...

tsi_active_mode_prescaler_t	ampsc
	Active mode prescaler. More...

tsi_electrode_osc_prescaler_t	ps
	Electrode Oscillator Prescaler.

tsi_external_osc_charge_current_t	extchrg
	External Oscillator charge current.

tsi_reference_osc_charge_current_t	refchrg
	Reference Oscillator charge current.

tsi_n_consecutive_scans_t	nscn
	Number of scans. More...

Field Documentation

uint16_t tsi_config_t::thresh

uint16_t tsi_config_t::thresl

tsi_low_power_clock_source_t tsi_config_t::lpclks

tsi_low_power_scan_interval_t tsi_config_t::lpscnitv

tsi_active_mode_clock_source_t tsi_config_t::amclks

tsi_active_mode_prescaler_t tsi_config_t::ampsc

tsi_n_consecutive_scans_t tsi_config_t::nscn

Enumeration Type Documentation

enum tsi_n_consecutive_scans_t

These constants define the TSI number of consecutive scans in a TSI instance for each electrode.

Enumerator
kTSI_ConsecutiveScansNumber_1time	Once per electrode.
kTSI_ConsecutiveScansNumber_2time	Twice per electrode.
kTSI_ConsecutiveScansNumber_3time	3 times consecutive scan
kTSI_ConsecutiveScansNumber_4time	4 times consecutive scan
kTSI_ConsecutiveScansNumber_5time	5 times consecutive scan
kTSI_ConsecutiveScansNumber_6time	6 times consecutive scan
kTSI_ConsecutiveScansNumber_7time	7 times consecutive scan
kTSI_ConsecutiveScansNumber_8time	8 times consecutive scan
kTSI_ConsecutiveScansNumber_9time	9 times consecutive scan
kTSI_ConsecutiveScansNumber_10time	10 times consecutive scan
kTSI_ConsecutiveScansNumber_11time	11 times consecutive scan
kTSI_ConsecutiveScansNumber_12time	12 times consecutive scan
kTSI_ConsecutiveScansNumber_13time	13 times consecutive scan
kTSI_ConsecutiveScansNumber_14time	14 times consecutive scan
kTSI_ConsecutiveScansNumber_15time	15 times consecutive scan
kTSI_ConsecutiveScansNumber_16time	16 times consecutive scan
kTSI_ConsecutiveScansNumber_17time	17 times consecutive scan
kTSI_ConsecutiveScansNumber_18time	18 times consecutive scan
kTSI_ConsecutiveScansNumber_19time	19 times consecutive scan
kTSI_ConsecutiveScansNumber_20time	20 times consecutive scan
kTSI_ConsecutiveScansNumber_21time	21 times consecutive scan
kTSI_ConsecutiveScansNumber_22time	22 times consecutive scan
kTSI_ConsecutiveScansNumber_23time	23 times consecutive scan
kTSI_ConsecutiveScansNumber_24time	24 times consecutive scan
kTSI_ConsecutiveScansNumber_25time	25 times consecutive scan
kTSI_ConsecutiveScansNumber_26time	26 times consecutive scan
kTSI_ConsecutiveScansNumber_27time	27 times consecutive scan
kTSI_ConsecutiveScansNumber_28time	28 times consecutive scan
kTSI_ConsecutiveScansNumber_29time	29 times consecutive scan
kTSI_ConsecutiveScansNumber_30time	30 times consecutive scan
kTSI_ConsecutiveScansNumber_31time	31 times consecutive scan
kTSI_ConsecutiveScansNumber_32time	32 times consecutive scan

enum tsi_electrode_osc_prescaler_t

These constants define the TSI electrode oscillator prescaler in a TSI instance.

Enumerator
kTSI_ElecOscPrescaler_1div	Electrode oscillator frequency divided by 1.
kTSI_ElecOscPrescaler_2div	Electrode oscillator frequency divided by 2.
kTSI_ElecOscPrescaler_4div	Electrode oscillator frequency divided by 4.
kTSI_ElecOscPrescaler_8div	Electrode oscillator frequency divided by 8.
kTSI_ElecOscPrescaler_16div	Electrode oscillator frequency divided by 16.
kTSI_ElecOscPrescaler_32div	Electrode oscillator frequency divided by 32.
kTSI_ElecOscPrescaler_64div	Electrode oscillator frequency divided by 64.
kTSI_ElecOscPrescaler_128div	Electrode oscillator frequency divided by 128.

enum tsi_low_power_clock_source_t

Enumerator
kTSI_LowPowerClockSource_LPOCLK	LPOCLK is selected.
kTSI_LowPowerClockSource_VLPOSCCLK	VLPOSCCLK is selected.

enum tsi_low_power_scan_interval_t

These constants define the TSI low power scan intervals in a TSI instance.

Enumerator
kTSI_LowPowerInterval_1ms	1 ms scan interval
kTSI_LowPowerInterval_5ms	5 ms scan interval
kTSI_LowPowerInterval_10ms	10 ms scan interval
kTSI_LowPowerInterval_15ms	15 ms scan interval
kTSI_LowPowerInterval_20ms	20 ms scan interval
kTSI_LowPowerInterval_30ms	30 ms scan interval
kTSI_LowPowerInterval_40ms	40 ms scan interval
kTSI_LowPowerInterval_50ms	50 ms scan interval
kTSI_LowPowerInterval_75ms	75 ms scan interval
kTSI_LowPowerInterval_100ms	100 ms scan interval
kTSI_LowPowerInterval_125ms	125 ms scan interval
kTSI_LowPowerInterval_150ms	150 ms scan interval
kTSI_LowPowerInterval_200ms	200 ms scan interval
kTSI_LowPowerInterval_300ms	300 ms scan interval
kTSI_LowPowerInterval_400ms	400 ms scan interval
kTSI_LowPowerInterval_500ms	500 ms scan interval

enum tsi_reference_osc_charge_current_t

These constants define the TSI Reference oscillator charge current select in a TSI instance.

Enumerator
kTSI_RefOscChargeCurrent_2uA	Reference oscillator charge current is 2 µA.
kTSI_RefOscChargeCurrent_4uA	Reference oscillator charge current is 4 µA.
kTSI_RefOscChargeCurrent_6uA	Reference oscillator charge current is 6 µA.
kTSI_RefOscChargeCurrent_8uA	Reference oscillator charge current is 8 µA.
kTSI_RefOscChargeCurrent_10uA	Reference oscillator charge current is 10 µA.
kTSI_RefOscChargeCurrent_12uA	Reference oscillator charge current is 12 µA.
kTSI_RefOscChargeCurrent_14uA	Reference oscillator charge current is 14 µA.
kTSI_RefOscChargeCurrent_16uA	Reference oscillator charge current is 16 µA.
kTSI_RefOscChargeCurrent_18uA	Reference oscillator charge current is 18 µA.
kTSI_RefOscChargeCurrent_20uA	Reference oscillator charge current is 20 µA.
kTSI_RefOscChargeCurrent_22uA	Reference oscillator charge current is 22 µA.
kTSI_RefOscChargeCurrent_24uA	Reference oscillator charge current is 24 µA.
kTSI_RefOscChargeCurrent_26uA	Reference oscillator charge current is 26 µA.
kTSI_RefOscChargeCurrent_28uA	Reference oscillator charge current is 28 µA.
kTSI_RefOscChargeCurrent_30uA	Reference oscillator charge current is 30 µA.
kTSI_RefOscChargeCurrent_32uA	Reference oscillator charge current is 32 µA.

enum tsi_external_osc_charge_current_t

These constants define the TSI External oscillator charge current select in a TSI instance.

Enumerator
kTSI_ExtOscChargeCurrent_2uA	External oscillator charge current is 2 µA.
kTSI_ExtOscChargeCurrent_4uA	External oscillator charge current is 4 µA.
kTSI_ExtOscChargeCurrent_6uA	External oscillator charge current is 6 µA.
kTSI_ExtOscChargeCurrent_8uA	External oscillator charge current is 8 µA.
kTSI_ExtOscChargeCurrent_10uA	External oscillator charge current is 10 µA.
kTSI_ExtOscChargeCurrent_12uA	External oscillator charge current is 12 µA.
kTSI_ExtOscChargeCurrent_14uA	External oscillator charge current is 14 µA.
kTSI_ExtOscChargeCurrent_16uA	External oscillator charge current is 16 µA.
kTSI_ExtOscChargeCurrent_18uA	External oscillator charge current is 18 µA.
kTSI_ExtOscChargeCurrent_20uA	External oscillator charge current is 20 µA.
kTSI_ExtOscChargeCurrent_22uA	External oscillator charge current is 22 µA.
kTSI_ExtOscChargeCurrent_24uA	External oscillator charge current is 24 µA.
kTSI_ExtOscChargeCurrent_26uA	External oscillator charge current is 26 µA.
kTSI_ExtOscChargeCurrent_28uA	External oscillator charge current is 28 µA.
kTSI_ExtOscChargeCurrent_30uA	External oscillator charge current is 30 µA.
kTSI_ExtOscChargeCurrent_32uA	External oscillator charge current is 32 µA.

enum tsi_active_mode_clock_source_t

These constants define the active mode clock source in a TSI instance.

Enumerator
kTSI_ActiveClkSource_LPOSCCLK	Active mode clock source is set to LPOOSC Clock.
kTSI_ActiveClkSource_MCGIRCLK	Active mode clock source is set to MCG Internal reference clock.
kTSI_ActiveClkSource_OSCERCLK	Active mode clock source is set to System oscillator output.

enum tsi_active_mode_prescaler_t

These constants define the TSI active mode prescaler in a TSI instance.

Enumerator
kTSI_ActiveModePrescaler_1div	Input clock source divided by 1.
kTSI_ActiveModePrescaler_2div	Input clock source divided by 2.
kTSI_ActiveModePrescaler_4div	Input clock source divided by 4.
kTSI_ActiveModePrescaler_8div	Input clock source divided by 8.
kTSI_ActiveModePrescaler_16div	Input clock source divided by 16.
kTSI_ActiveModePrescaler_32div	Input clock source divided by 32.
kTSI_ActiveModePrescaler_64div	Input clock source divided by 64.
kTSI_ActiveModePrescaler_128div	Input clock source divided by 128.

enum tsi_status_flags_t

Enumerator
kTSI_EndOfScanFlag	End-Of-Scan flag.
kTSI_OutOfRangeFlag	Out-Of-Range flag.
kTSI_ExternalElectrodeErrorFlag	External electrode error flag.
kTSI_OverrunErrorFlag	Overrun error flag.

enum tsi_interrupt_enable_t

Enumerator
kTSI_GlobalInterruptEnable	TSI module global interrupt.
kTSI_OutOfRangeInterruptEnable	Out-Of-Range interrupt.
kTSI_EndOfScanInterruptEnable	End-Of-Scan interrupt.
kTSI_ErrorInterrruptEnable	Error interrupt.

Function Documentation

void TSI_Init	(	TSI_Type *	base,
		const tsi_config_t *	config
	)

Initializes the peripheral to the targeted state specified by the parameter configuration, such as initialize and set prescalers, number of scans, clocks, delta voltage capacitance trimmer, reference, and electrode charge current and threshold.

Parameters

base	TSI peripheral base address.
config	Pointer to the TSI peripheral configuration structure.

Returns: none

void TSI_Deinit ( TSI_Type * base )

De-initializes the peripheral to default state.

Parameters

base	TSI peripheral base address.

Returns: none

void TSI_GetNormalModeDefaultConfig ( tsi_config_t * userConfig )

This interface sets the userConfig structure to a default value. The configuration structure only includes the settings for the whole TSI. The user configure is set to these values:

userConfig.lpclks = kTSI_LowPowerClockSource_LPOCLK;
userConfig.lpscnitv = kTSI_LowPowerInterval_100ms;
userConfig.amclks = kTSI_ActiveClkSource_LPOSCCLK;
userConfig.ampsc = kTSI_ActiveModePrescaler_8div;
userConfig.ps = kTSI_ElecOscPrescaler_2div;
userConfig.extchrg = kTSI_ExtOscChargeCurrent_10uA;
userConfig.refchrg = kTSI_RefOscChargeCurrent_10uA;
userConfig.nscn = kTSI_ConsecutiveScansNumber_8time;
userConfig.thresh = 0U;
userConfig.thresl = 0U;

Parameters

userConfig Pointer to the TSI user configuration structure.

void TSI_GetLowPowerModeDefaultConfig ( tsi_config_t * userConfig )

This interface sets userConfig structure to a default value. The configuration structure only includes the settings for the whole TSI. The user configure is set to these values:

userConfig.lpclks = kTSI_LowPowerClockSource_LPOCLK;
userConfig.lpscnitv = kTSI_LowPowerInterval_100ms;
userConfig.amclks = kTSI_ActiveClkSource_LPOSCCLK;
userConfig.ampsc = kTSI_ActiveModePrescaler_64div;
userConfig.ps = kTSI_ElecOscPrescaler_1div;
userConfig.extchrg = kTSI_ExtOscChargeCurrent_2uA;
userConfig.refchrg = kTSI_RefOscChargeCurrent_32uA;
userConfig.nscn = kTSI_ConsecutiveScansNumber_26time;
userConfig.thresh = 15000U;
userConfig.thresl = 1000U;

Parameters

userConfig Pointer to the TSI user configuration structure.

void TSI_Calibrate	(	TSI_Type *	base,
		tsi_calibration_data_t *	calBuff
	)

Calibrates the peripheral to fetch the initial counter value of the enabled electrodes. This API is mostly used at the initial application setup. Call this function after the TSI_Init API and use the calibrated counter values to set up applications (such as to determine under which counter value a touch event occurs).

Note: This API is called in normal power modes.; For K60 series, the calibrated baseline counter value CANNOT be used in low power modes. To obtain the calibrated counter values in low power modes, see K60 Mask Set Errata for Mask 5N22D.

Parameters

base	TSI peripheral base address.
calBuff	Data buffer that store the calibrated counter value.

Returns: none

void TSI_EnableInterrupts	(	TSI_Type *	base,
		uint32_t	mask
	)

Parameters

base	TSI peripheral base address.
mask	interrupt source The parameter can be a combination of the following source if defined: kTSI_GlobalInterruptEnable kTSI_EndOfScanInterruptEnable kTSI_OutOfRangeInterruptEnable kTSI_ErrorInterrruptEnable

void TSI_DisableInterrupts	(	TSI_Type *	base,
		uint32_t	mask
	)

Parameters

base	TSI peripheral base address.
mask	interrupt source The parameter can be a combination of the following source if defined: kTSI_GlobalInterruptEnable kTSI_EndOfScanInterruptEnable kTSI_OutOfRangeInterruptEnable kTSI_ErrorInterrruptEnable

static uint32_t TSI_GetStatusFlags ( TSI_Type * base )

inlinestatic

This function get TSI interrupt flags.

Parameters

base	TSI peripheral base address.

Returns: The mask of these status flag bits.

void TSI_ClearStatusFlags	(	TSI_Type *	base,
		uint32_t	mask
	)

This function clears the TSI interrupt flags.

Note: The automatically cleared flags can't be cleared by this function.

Parameters

base	TSI peripheral base address.
mask	the status flags to clear.

static uint32_t TSI_GetScanTriggerMode ( TSI_Type * base )

inlinestatic

Parameters

base	TSI peripheral base address.

Returns: Scan trigger mode.

static bool TSI_IsScanInProgress ( TSI_Type * base )

inlinestatic

Parameters

base	TSI peripheral base address.

Returns: True - if scan is in progress. False - if scan is not in progress.

static void TSI_SetElectrodeOSCPrescaler	(	TSI_Type *	base,
		tsi_electrode_osc_prescaler_t	prescaler
	)

inlinestatic

Parameters

base	TSI peripheral base address.
prescaler	Prescaler value.

Returns: none.

static void TSI_SetNumberOfScans	(	TSI_Type *	base,
		tsi_n_consecutive_scans_t	number
	)

inlinestatic

Parameters

base	TSI peripheral base address.
number	Number of scans.

Returns: none.

static void TSI_EnableModule	(	TSI_Type *	base,
		bool	enable
	)

inlinestatic

Parameters

base	TSI peripheral base address.
enable	Choose whether to enable TSI module. true Enable module; false Disable module;

Returns: none.

static void TSI_EnableLowPower	(	TSI_Type *	base,
		bool	enable
	)

inlinestatic

Parameters

base	TSI peripheral base address.
enable	Choose whether to enable TSI module in low power modes. true Enable module in low power modes; false Disable module in low power modes;

Returns: none.

static void TSI_EnablePeriodicalScan	(	TSI_Type *	base,
		bool	enable
	)

inlinestatic

Parameters

base	TSI peripheral base address.
enable	Choose whether to enable periodical trigger scan. true Enable periodical trigger scan; false Enable software trigger scan;

Returns: none.

static void TSI_StartSoftwareTrigger ( TSI_Type * base )

inlinestatic

Parameters

base	TSI peripheral base address.

Returns: none.

static void TSI_SetLowPowerScanInterval	(	TSI_Type *	base,
		tsi_low_power_scan_interval_t	interval
	)

inlinestatic

Parameters

base	TSI peripheral base address.
interval	Interval for low power scan.

Returns: none.

static void TSI_SetLowPowerClock	(	TSI_Type *	base,
		uint32_t	clock
	)

inlinestatic

Parameters

base	TSI peripheral base address.
clock	Low power clock selection.

static void TSI_SetReferenceChargeCurrent	(	TSI_Type *	base,
		tsi_reference_osc_charge_current_t	current
	)

inlinestatic

Parameters

base	TSI peripheral base address.
current	The reference oscillator charge current.

Returns: none.

static void TSI_SetElectrodeChargeCurrent	(	TSI_Type *	base,
		tsi_external_osc_charge_current_t	current
	)

inlinestatic

Parameters

base	TSI peripheral base address.
current	The external electrode charge current.

Returns: none.

static void TSI_SetScanModulo	(	TSI_Type *	base,
		uint32_t	modulo
	)

inlinestatic

Parameters

base	TSI peripheral base address.
modulo	Scan modulo value.

Returns: none.

static void TSI_SetActiveModeSource	(	TSI_Type *	base,
		uint32_t	source
	)

inlinestatic

Parameters

base	TSI peripheral base address.
source	Active mode clock source (LPOSCCLK, MCGIRCLK, OSCERCLK).

Returns: none.

static void TSI_SetActiveModePrescaler	(	TSI_Type *	base,
		tsi_active_mode_prescaler_t	prescaler
	)

inlinestatic

Parameters

base	TSI peripheral base address.
prescaler	Prescaler value.

Returns: none.

static void TSI_SetLowPowerChannel	(	TSI_Type *	base,
		uint16_t	channel
	)

inlinestatic

   Only one channel can be enabled in low power mode.

Parameters

base	TSI peripheral base address.
channel	Channel number.

Returns: none.

static uint32_t TSI_GetLowPowerChannel ( TSI_Type * base )

inlinestatic

Note: Only one channel can be enabled in low power mode.

Parameters

base	TSI peripheral base address.

Returns: Channel number.

static void TSI_EnableChannel	(	TSI_Type *	base,
		uint16_t	channel,
		bool	enable
	)

inlinestatic

Parameters

base	TSI peripheral base address.
channel	Channel to be enabled.
enable	Choose whether to enable specific channel. true Enable the specific channel; false Disable the specific channel;

Returns: none.

static void TSI_EnableChannels	(	TSI_Type *	base,
		uint16_t	channelsMask,
		bool	enable
	)

inlinestatic

The function enables or disables channels by mask. It can enable/disable all channels at once.

Parameters

base	TSI peripheral base address.
channelsMask	Channels mask that indicate channels that are to be enabled/disabled.
enable	Choose to enable or disable the specified channels. true Enable the specified channels; false Disable the specified channels;

Returns: none.

static bool TSI_IsChannelEnabled	(	TSI_Type *	base,
		uint16_t	channel
	)

inlinestatic

Parameters

base	TSI peripheral base address.
channel	Channel to be checked.

Returns: true - if the channel is enabled; false - if the channel is disabled;

static uint16_t TSI_GetEnabledChannels ( TSI_Type * base )

inlinestatic

Parameters

base	TSI peripheral base address.

Returns: Channels mask that indicates currently enabled channels.

static uint16_t TSI_GetWakeUpChannelCounter ( TSI_Type * base )

inlinestatic

Parameters

base	TSI peripheral base address.

Returns: Wake up counter value.

static uint16_t TSI_GetNormalModeCounter	(	TSI_Type *	base,
		uint16_t	channel
	)

inlinestatic

Note: This API can only be used in normal active modes.

Parameters

base	TSI peripheral base address.
channel	Index of the specific TSI channel.

Returns: The counter value of the specific channel.

static void TSI_SetLowThreshold	(	TSI_Type *	base,
		uint16_t	low_threshold
	)

inlinestatic

Parameters

base	TSI peripheral base address.
low_threshold	Low counter threshold.

Returns: none.

static void TSI_SetHighThreshold	(	TSI_Type *	base,
		uint16_t	high_threshold
	)

inlinestatic

Parameters

base	TSI peripheral base address.
high_threshold	High counter threshold.

Returns: none.

Overview

Typical use case

TSI Operation

Data Structures

Macros

Enumerations

Functions

Driver version

Data Structure Documentation

Data Fields

Data Fields

Field Documentation

Enumeration Type Documentation

Function Documentation