LESENSEEMLIB

Detailed Description

Low Energy Sensor (LESENSE) Peripheral API.

This module contains functions to control the LESENSE peripheral of Silicon Labs 32-bit MCUs and SoCs. LESENSE is a low energy sensor interface capable of autonomously collecting and processing data from multiple sensors even when in EM2.

Data Structures

struct LESENSE_AltExDesc_TypeDef
struct LESENSE_ChAll_TypeDef
struct LESENSE_ChDesc_TypeDef
struct LESENSE_ConfAltEx_TypeDef
struct LESENSE_CoreCtrlDesc_TypeDef
struct LESENSE_DecCtrlDesc_TypeDef
struct LESENSE_DecStAll_TypeDef
struct LESENSE_DecStCond_TypeDef
struct LESENSE_DecStDesc_TypeDef
struct LESENSE_Init_TypeDef
struct LESENSE_PerCtrlDesc_TypeDef
struct LESENSE_TimeCtrlDesc_TypeDef

Macros

#define LESENSE_ALTEX_CH_CONF_DEFAULT
#define LESENSE_ALTEX_CONF_DEFAULT
#define LESENSE_CH_CONF_DEFAULT
#define LESENSE_CORECTRL_DESC_DEFAULT
#define LESENSE_DECCTRL_DESC_DEFAULT
#define LESENSE_DECODER_CONF_DEFAULT
#define LESENSE_INIT_DEFAULT
#define LESENSE_NUM_CHANNELS 16
#define LESENSE_NUM_DECODER_STATES ( _LESENSE_DECSTATE_DECSTATE_MASK + 1)
#define LESENSE_PERCTRL_DESC_DEFAULT
#define LESENSE_SCAN_CONF_DEFAULT
#define LESENSE_ST_CONF_DEFAULT
#define LESENSE_TIMECTRL_DESC_DEFAULT

Enumerations

enum LESENSE_AltExMap_TypeDef {
lesenseAltExMapALTEX = _LESENSE_CTRL_ALTEXMAP_ALTEX,
lesenseAltExMapCH = _LESENSE_CTRL_ALTEXMAP_CH
}
enum LESENSE_AltExPinIdle_TypeDef {
lesenseAltExPinIdleDis = _LESENSE_ALTEXCONF_IDLECONF0_DISABLE,
lesenseAltExPinIdleHigh = _LESENSE_ALTEXCONF_IDLECONF0_HIGH,
lesenseAltExPinIdleLow = _LESENSE_ALTEXCONF_IDLECONF0_LOW
}
enum LESENSE_BiasMode_TypeDef {
lesenseBiasModeDutyCycle = LESENSE_BIASCTRL_BIASMODE_DUTYCYCLE,
lesenseBiasModeHighAcc = LESENSE_BIASCTRL_BIASMODE_HIGHACC,
lesenseBiasModeDontTouch = LESENSE_BIASCTRL_BIASMODE_DONTTOUCH
}
enum LESENSE_BufTrigLevel_TypeDef {
lesenseBufTrigHalf = LESENSE_CTRL_BUFIDL_HALFFULL,
lesenseBufTrigFull = LESENSE_CTRL_BUFIDL_FULL
}
enum LESENSE_ChClk_TypeDef {
lesenseClkLF = _LESENSE_CH_INTERACT_EXCLK_LFACLK,
lesenseClkHF = _LESENSE_CH_INTERACT_EXCLK_AUXHFRCO
}
enum LESENSE_ChCompMode_TypeDef {
lesenseCompModeLess = LESENSE_CH_EVAL_COMP_LESS,
lesenseCompModeGreaterOrEq = LESENSE_CH_EVAL_COMP_GE
}
enum LESENSE_ChEvalMode_TypeDef {
lesenseEvalModeThreshold = _LESENSE_CH_EVAL_MODE_THRES,
lesenseEvalModeSlidingWindow = _LESENSE_CH_EVAL_MODE_SLIDINGWIN,
lesenseEvalModeStepDetection = _LESENSE_CH_EVAL_MODE_STEPDET
}
enum LESENSE_ChIntMode_TypeDef {
lesenseSetIntNone = LESENSE_CH_INTERACT_SETIF_NONE,
lesenseSetIntLevel = LESENSE_CH_INTERACT_SETIF_LEVEL,
lesenseSetIntPosEdge = LESENSE_CH_INTERACT_SETIF_POSEDGE,
lesenseSetIntNegEdge = LESENSE_CH_INTERACT_SETIF_NEGEDGE
}
enum LESENSE_ChPinExMode_TypeDef {
lesenseChPinExDis = LESENSE_CH_INTERACT_EXMODE_DISABLE,
lesenseChPinExHigh = LESENSE_CH_INTERACT_EXMODE_HIGH,
lesenseChPinExLow = LESENSE_CH_INTERACT_EXMODE_LOW,
lesenseChPinExDACOut = LESENSE_CH_INTERACT_EXMODE_DACOUT
}
enum LESENSE_ChPinIdleMode_TypeDef {
lesenseChPinIdleDis = _LESENSE_IDLECONF_CH0_DISABLE,
lesenseChPinIdleHigh = _LESENSE_IDLECONF_CH0_HIGH,
lesenseChPinIdleLow = _LESENSE_IDLECONF_CH0_LOW,
lesenseChPinIdleDACC = _LESENSE_IDLECONF_CH0_DAC
}
enum LESENSE_ChSampleMode_TypeDef {
lesenseSampleModeCounter = 0x0 << _LESENSE_CH_INTERACT_SAMPLE_SHIFT,
lesenseSampleModeACMP = LESENSE_CH_INTERACT_SAMPLE_ACMP,
lesenseSampleModeADC = LESENSE_CH_INTERACT_SAMPLE_ADC,
lesenseSampleModeADCDiff = LESENSE_CH_INTERACT_SAMPLE_ADCDIFF
}
enum LESENSE_ClkPresc_TypeDef {
lesenseClkDiv_1 = 0,
lesenseClkDiv_2 = 1,
lesenseClkDiv_4 = 2,
lesenseClkDiv_8 = 3,
lesenseClkDiv_16 = 4,
lesenseClkDiv_32 = 5,
lesenseClkDiv_64 = 6,
lesenseClkDiv_128 = 7
}
enum LESENSE_ControlACMP_TypeDef {
lesenseACMPModeDisable = _LESENSE_PERCTRL_ACMP0MODE_DISABLE,
lesenseACMPModeMux = _LESENSE_PERCTRL_ACMP0MODE_MUX,
lesenseACMPModeMuxThres = _LESENSE_PERCTRL_ACMP0MODE_MUXTHRES
}
enum LESENSE_ControlDACData_TypeDef {
lesenseDACIfData = _LESENSE_PERCTRL_DACCH0DATA_DACDATA,
lesenseThres = _LESENSE_PERCTRL_DACCH0DATA_THRES
}
enum LESENSE_DecInput_TypeDef {
lesenseDecInputSensorSt = LESENSE_DECCTRL_INPUT_SENSORSTATE,
lesenseDecInputPRS = LESENSE_DECCTRL_INPUT_PRS
}
enum LESENSE_DMAWakeUp_TypeDef {
lesenseDMAWakeUpDisable = LESENSE_CTRL_DMAWU_DISABLE,
lesenseDMAWakeUpBufValid = LESENSE_CTRL_DMAWU_BUFDATAV,
lesenseDMAWakeUpBufLevel = LESENSE_CTRL_DMAWU_BUFLEVEL
}
enum LESENSE_PRSSel_TypeDef {
lesensePRSCh0 = 0,
lesensePRSCh1 = 1,
lesensePRSCh2 = 2,
lesensePRSCh3 = 3,
lesensePRSCh4 = 4,
lesensePRSCh5 = 5,
lesensePRSCh6 = 6,
lesensePRSCh7 = 7,
lesensePRSCh8 = 8,
lesensePRSCh9 = 9,
lesensePRSCh10 = 10,
lesensePRSCh11 = 11
}
enum LESENSE_ScanConfSel_TypeDef {
lesenseScanConfDirMap = LESENSE_CTRL_SCANCONF_DIRMAP,
lesenseScanConfInvMap = LESENSE_CTRL_SCANCONF_INVMAP,
lesenseScanConfToggle = LESENSE_CTRL_SCANCONF_TOGGLE,
lesenseScanConfDecDef = LESENSE_CTRL_SCANCONF_DECDEF
}
enum LESENSE_ScanMode_TypeDef {
lesenseScanStartPeriodic = LESENSE_CTRL_SCANMODE_PERIODIC,
lesenseScanStartOneShot = LESENSE_CTRL_SCANMODE_ONESHOT,
lesenseScanStartPRS = LESENSE_CTRL_SCANMODE_PRS
}
enum LESENSE_StTransAct_TypeDef {
lesenseTransActNone = LESENSE_ST_TCONFA_PRSACT_NONE,
lesenseTransActPRS0 = LESENSE_ST_TCONFA_PRSACT_PRS0,
lesenseTransActPRS1 = LESENSE_ST_TCONFA_PRSACT_PRS1,
lesenseTransActPRS01 = LESENSE_ST_TCONFA_PRSACT_PRS01,
lesenseTransActPRS2 = LESENSE_ST_TCONFA_PRSACT_PRS2,
lesenseTransActPRS02 = LESENSE_ST_TCONFA_PRSACT_PRS02,
lesenseTransActPRS12 = LESENSE_ST_TCONFA_PRSACT_PRS12,
lesenseTransActPRS012 = LESENSE_ST_TCONFA_PRSACT_PRS012,
lesenseTransActUp = LESENSE_ST_TCONFA_PRSACT_UP,
lesenseTransActDown = LESENSE_ST_TCONFA_PRSACT_DOWN,
lesenseTransActUpAndPRS2 = LESENSE_ST_TCONFA_PRSACT_UPANDPRS2,
lesenseTransActDownAndPRS2 = LESENSE_ST_TCONFA_PRSACT_DOWNANDPRS2
}
enum LESENSE_WarmupMode_TypeDef {
lesenseWarmupModeNormal = LESENSE_PERCTRL_WARMUPMODE_NORMAL,
lesenseWarmupModeACMP = LESENSE_PERCTRL_WARMUPMODE_KEEPACMPWARM,
lesenseWarmupModeDAC = LESENSE_PERCTRL_WARMUPMODE_KEEPDACWARM,
lesenseWarmupModeKeepWarm = LESENSE_PERCTRL_WARMUPMODE_KEEPACMPDACWARM
}

Functions

void LESENSE_AltExConfig (const LESENSE_ConfAltEx_TypeDef *confAltEx)
Configure the LESENSE alternate excitation modes.
__STATIC_INLINE uint32_t LESENSE_ChannelActiveGet (void)
Get the currently active channel index.
void LESENSE_ChannelAllConfig (const LESENSE_ChAll_TypeDef *confChAll)
Configure all (16) LESENSE sensor channels.
void LESENSE_ChannelConfig (const LESENSE_ChDesc_TypeDef *confCh, uint32_t chIdx)
Configure a single LESENSE sensor channel.
void LESENSE_ChannelEnable (uint8_t chIdx, bool enaScanCh, bool enaPin)
Enable/disable LESENSE scan channel and the pin assigned to it.
void LESENSE_ChannelEnableMask (uint16_t chMask, uint16_t pinMask)
Enable/disable LESENSE scan channel and the pin assigned to it.
void LESENSE_ChannelSlidingWindow (uint8_t chIdx, uint32_t windowSize, uint32_t initValue)
Configure Sliding Window evaluation mode for a specific channel.
void LESENSE_ChannelStepDetection (uint8_t chIdx, uint32_t stepSize, uint32_t initValue)
Configure step detection evaluation mode for a specific channel.
void LESENSE_ChannelThresSet (uint8_t chIdx, uint16_t acmpThres, uint16_t cntThres)
Set LESENSE channel threshold parameters.
void LESENSE_ChannelTimingSet (uint8_t chIdx, uint8_t exTime, uint8_t sampleDelay, uint16_t measDelay)
Set LESENSE channel timing parameters.
void LESENSE_ClkDivSet ( LESENSE_ChClk_TypeDef clk, LESENSE_ClkPresc_TypeDef clkDiv)
Set clock division for LESENSE timers.
void LESENSE_DecoderPrsOut (bool enable, uint32_t decMask, uint32_t decVal)
Enable or disable PRS output from the LESENSE decoder.
void LESENSE_DecoderStart (void)
Start LESENSE decoder.
void LESENSE_DecoderStateAllConfig (const LESENSE_DecStAll_TypeDef *confDecStAll)
Configure all LESENSE decoder states.
void LESENSE_DecoderStateConfig (const LESENSE_DecStDesc_TypeDef *confDecSt, uint32_t decSt)
Configure a single LESENSE decoder state.
uint32_t LESENSE_DecoderStateGet (void)
Get the current state of the LESENSE decoder.
void LESENSE_DecoderStateSet (uint32_t decSt)
Set LESENSE decoder state.
__STATIC_INLINE void LESENSE_DecoderStop (void)
Stop LESENSE decoder.
void LESENSE_Init (const LESENSE_Init_TypeDef *init, bool reqReset)
Initialize the LESENSE module.
__STATIC_INLINE void LESENSE_IntClear (uint32_t flags)
Clear one or more pending LESENSE interrupts.
__STATIC_INLINE void LESENSE_IntDisable (uint32_t flags)
Disable one or more LESENSE interrupts.
__STATIC_INLINE void LESENSE_IntEnable (uint32_t flags)
Enable one or more LESENSE interrupts.
__STATIC_INLINE uint32_t LESENSE_IntGet (void)
Get pending LESENSE interrupt flags.
__STATIC_INLINE uint32_t LESENSE_IntGetEnabled (void)
Get enabled and pending LESENSE interrupt flags.
__STATIC_INLINE void LESENSE_IntSet (uint32_t flags)
Set one or more pending LESENSE interrupts from SW.
void LESENSE_Reset (void)
Reset the LESENSE module.
void LESENSE_ResultBufferClear (void)
Clear result buffer.
uint32_t LESENSE_ScanFreqSet (uint32_t refFreq, uint32_t scanFreq)
Set scan frequency for periodic scanning.
void LESENSE_ScanModeSet ( LESENSE_ScanMode_TypeDef scanMode, bool start)
Set scan mode of the LESENSE channels.
__STATIC_INLINE uint32_t LESENSE_ScanResultDataBufferGet (uint32_t idx)
Get data from the result data buffer.
__STATIC_INLINE uint32_t LESENSE_ScanResultDataGet (void)
Get the oldest unread data from the result buffer.
__STATIC_INLINE uint32_t LESENSE_ScanResultGet (void)
Get the latest scan comparison result (1 bit / channel).
void LESENSE_ScanStart (void)
Start scanning of sensors.
void LESENSE_ScanStop (void)
Stop scanning of sensors.
__STATIC_INLINE uint32_t LESENSE_SensorStateGet (void)
Get the current state of the LESENSE sensor.
void LESENSE_StartDelaySet (uint8_t startDelay)
Set start delay of sensor interaction on each channel.
__STATIC_INLINE uint32_t LESENSE_StatusGet (void)
Get the current status of LESENSE.
__STATIC_INLINE void LESENSE_StatusWait (uint32_t flag)
Wait until the status of LESENSE is equal to what requested.
void LESENSE_StepSizeSet (uint32_t stepSize)
Set the step size for all LESENSE channels.
void LESENSE_WindowSizeSet (uint32_t windowSize)
Set the window size for all LESENSE channels.

Macro Definition Documentation

#define LESENSE_ALTEX_CH_CONF_DEFAULT
Value:
{ \
false, /* Alternate excitation disabled.*/ \
lesenseAltExPinIdleDis, /* Alternate excitation pin is disabled in idle. */ \
false /* Excite only for corresponding channel. */ \
}

Default configuration for alternate excitation channel.

Definition at line 965 of file em_lesense.h .

#define LESENSE_ALTEX_CONF_DEFAULT
Value:
{ \
lesenseAltExMapCH, \
{ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 0. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 1. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 2. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 3. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 4. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 5. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 6. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 7. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 8. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 9. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 10. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 11. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 12. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 13. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT, /* Alternate excitation channel 14. */ \
LESENSE_ALTEX_CH_CONF_DEFAULT /* Alternate excitation channel 15. */ \
} \
}

Default configuration for all alternate excitation channels.

Definition at line 997 of file em_lesense.h .

#define LESENSE_CH_CONF_DEFAULT
Value:
{ \
false, /* Disable scan channel. */ \
false, /* Disable the assigned pin on scan channel. */ \
false, /* Disable interrupts on channel. */ \
lesenseChPinExDis, /* Channel pin is disabled during the excitation period. */ \
lesenseChPinIdleDis, /* Channel pin is disabled during the idle period. */ \
false, /* Don't use alternate excitation pins for excitation. */ \
false, /* Disabled to shift results from this channel to the decoder register. */ \
false, /* Disabled to invert the scan result bit. */ \
false, /* Disabled to store counter value in the result buffer. */ \
lesenseClkLF, /* Use the LF clock for excitation timing. */ \
lesenseClkLF, /* Use the LF clock for sample timing. */ \
0x00U, /* Excitation time is set to 0(+1) excitation clock cycles. */ \
0x00U, /* Sample delay is set to 0(+1) sample clock cycles. */ \
0x00U, /* Measure delay is set to 0 excitation clock cycles.*/ \
0x00U, /* ACMP threshold has been set to 0. */ \
lesenseSampleModeACMP, /* ACMP output will be used in comparison. */ \
lesenseSetIntNone, /* No interrupt is generated by the channel. */ \
0x00U, /* Counter threshold has bee set to 0x00. */ \
lesenseCompModeLess, /* Compare mode has been set to trigger interrupt on "less". */ \
lesenseEvalModeThreshold /* Eval mode has been set to trigger interrupt on threshold. */ \
}

Default configuration for scan channel.

Definition at line 853 of file em_lesense.h .

#define LESENSE_CORECTRL_DESC_DEFAULT
Value:
{ \
lesenseScanStartPeriodic, /* Start new scan each time the period counter overflows. */ \
lesensePRSCh0, /* Default PRS channel is selected. */ \
lesenseScanConfDirMap, /* Direct mapping SCANCONF register usage strategy. */ \
false, /* Don't invert ACMP0 output. */ \
false, /* Don't invert ACMP1 output. */ \
false, /* Disable dual sampling. */ \
true, /* Store scan result after each scan. */ \
true, /* Overwrite result buffer register even if it is full. */ \
lesenseBufTrigHalf, /* Trigger interrupt and DMA request if result buffer is half full. */ \
lesenseDMAWakeUpDisable, /* Don't wake up on DMA from EM2. */ \
lesenseBiasModeDontTouch, /* Don't touch bias configuration. */ \
true /* Keep LESENSE running in debug mode. */ \
}

Default configuration for LESENSE_CtrlDesc_TypeDef structure.

Definition at line 531 of file em_lesense.h .

#define LESENSE_DECCTRL_DESC_DEFAULT
Value:
{ \
lesenseDecInputSensorSt, /* The SENSORSTATE register is used as input to the decoder. */ \
0U, /* State 0 is the initial state of the decoder. */ \
false, /* Disable check of current state. */ \
true, /* Enable channel x % 16 interrupt on state x change. */ \
true, /* Enable decoder hysteresis on PRS0 output. */ \
true, /* Enable decoder hysteresis on PRS1 output. */ \
true, /* Enable decoder hysteresis on PRS2 output. */ \
true, /* Enable decoder hysteresis on PRS3 output. */ \
false, /* Disable count mode on decoder PRS channels 0 and 1*/ \
lesensePRSCh0, /* PRS Channel 0 as input for bit 0 of the LESENSE decoder. */ \
lesensePRSCh1, /* PRS Channel 1 as input for bit 1 of the LESENSE decoder. */ \
lesensePRSCh2, /* PRS Channel 2 as input for bit 2 of the LESENSE decoder. */ \
lesensePRSCh3, /* PRS Channel 3 as input for bit 3 of the LESENSE decoder. */ \
}

Default configuration for LESENSE_PerCtrl_TypeDef structure.

Definition at line 720 of file em_lesense.h .

#define LESENSE_DECODER_CONF_DEFAULT

Default configuration for all decoder states.

Definition at line 1099 of file em_lesense.h .

#define LESENSE_INIT_DEFAULT
Value:
{ \
.coreCtrl = LESENSE_CORECTRL_DESC_DEFAULT , /* Default core control parameters. */ \
.timeCtrl = LESENSE_TIMECTRL_DESC_DEFAULT , /* Default time control parameters. */ \
.perCtrl = LESENSE_PERCTRL_DESC_DEFAULT , /* Default peripheral control parameters. */ \
.decCtrl = LESENSE_DECCTRL_DESC_DEFAULT /* Default decoder control parameters. */ \
}
LESENSE_CORECTRL_DESC_DEFAULT
#define LESENSE_CORECTRL_DESC_DEFAULT
Definition: em_lesense.h:531
LESENSE_TIMECTRL_DESC_DEFAULT
#define LESENSE_TIMECTRL_DESC_DEFAULT
Definition: em_lesense.h:561
LESENSE_DECCTRL_DESC_DEFAULT
#define LESENSE_DECCTRL_DESC_DEFAULT
Definition: em_lesense.h:720
LESENSE_PERCTRL_DESC_DEFAULT
#define LESENSE_PERCTRL_DESC_DEFAULT
Definition: em_lesense.h:656

Default configuration for LESENSE_Init_TypeDef structure.

Definition at line 753 of file em_lesense.h .

#define LESENSE_NUM_CHANNELS   16

Number of LESENSE channels.

Definition at line 60 of file em_lesense.h .

Referenced by LESENSE_ChannelAllConfig() , LESENSE_ChannelConfig() , LESENSE_ChannelThresSet() , and LESENSE_Reset() .

#define LESENSE_NUM_DECODER_STATES   ( _LESENSE_DECSTATE_DECSTATE_MASK + 1)

Number of decoder states supported by current device.

Definition at line 57 of file em_lesense.h .

Referenced by LESENSE_DecoderStateAllConfig() , LESENSE_DecoderStateConfig() , and LESENSE_Reset() .

#define LESENSE_PERCTRL_DESC_DEFAULT
Value:
{ \
lesenseDACIfData, /* DAC channel 0 data is defined by DAC_CH0DATA register. */ \
lesenseDACIfData, /* DAC channel 1 data is defined by DAC_CH1DATA register. */ \
lesenseACMPModeMuxThres, /* LESENSE controls the input mux and the threshold value of ACMP0. */ \
lesenseACMPModeMuxThres, /* LESENSE controls the input mux and the threshold value of ACMP1. */ \
lesenseWarmupModeKeepWarm, /* Keep both ACMPs and the DAC powered up when LESENSE is idle. */ \
false, /* DAC is enabled for before every channel measurement. */ \
false, /* DAC is enabled a full clock cycle before sensor interaction */ \
false, /* LESENSE does not control DAC channel 0. */ \
false /* LESENSE does not control DAC channel 1. */ \
}

Default configuration for LESENSE_PerCtrl_TypeDef structure.

Definition at line 656 of file em_lesense.h .

#define LESENSE_SCAN_CONF_DEFAULT
Value:
{ \
{ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 0. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 1. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 2. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 3. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 4. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 5. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 6. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 7. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 8. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 9. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 10. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 11. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 12. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 13. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 14. */ \
LESENSE_CH_CONF_DEFAULT, /* Scan channel 15. */ \
} \
}

Default configuration for all sensor channels.

Definition at line 902 of file em_lesense.h .

#define LESENSE_ST_CONF_DEFAULT
Value:
{ \
0x0FU, /* Compare value set to 0x0F. */ \
0x00U, /* All decoder inputs masked. */ \
0U, /* Next state is state 0. */ \
lesenseTransActNone, /* No PRS action performed on compare match. */ \
false /* No interrupt triggered on compare match. */ \
}

Default configuration for decoder state condition.

Definition at line 1045 of file em_lesense.h .

#define LESENSE_TIMECTRL_DESC_DEFAULT
Value:
{ \
0U, /* No sensor interaction delay. */ \
false /* Don't delay the AUXHFRCO startup. */ \
}

Default configuration for LESENSE_TimeCtrlDesc_TypeDef structure.

Definition at line 561 of file em_lesense.h .

Enumeration Type Documentation

enum LESENSE_AltExMap_TypeDef

Locations of the alternate excitation function.

Enumerator
lesenseAltExMapALTEX

Alternate excitation is mapped to the LES_ALTEX pins.

lesenseAltExMapCH

Alternative excitation is mapped to the pin of LESENSE channel (X+8 mod 16), X being the active channel.

Definition at line 128 of file em_lesense.h .

enum LESENSE_AltExPinIdle_TypeDef

Idle phase configuration of alternate excitation channels.

Enumerator
lesenseAltExPinIdleDis

ALTEX output is disabled in idle phase. Note: this value could be used for all alternate excitation channels.

lesenseAltExPinIdleHigh

ALTEX output is high in idle phase. Note: this value could be used for all alternate excitation channels.

lesenseAltExPinIdleLow

ALTEX output is low in idle phase. Note: this value could be used for all alternate excitation channels.

Definition at line 431 of file em_lesense.h .

enum LESENSE_BiasMode_TypeDef

Bias modes.

Enumerator
lesenseBiasModeDutyCycle

Duty cycle bias module between low power and high accuracy mode.

lesenseBiasModeHighAcc

Bias module is always in high accuracy mode.

lesenseBiasModeDontTouch

Bias module is controlled by the EMU and not affected by LESENSE.

Definition at line 168 of file em_lesense.h .

enum LESENSE_BufTrigLevel_TypeDef

Result buffer interrupt and DMA trigger levels.

Enumerator
lesenseBufTrigHalf

DMA and interrupt flags are set when result buffer is halffull.

lesenseBufTrigFull

DMA and interrupt flags set when result buffer is full.

Definition at line 145 of file em_lesense.h .

enum LESENSE_ChClk_TypeDef

Clock used for excitation and sample delay timing.

Enumerator
lesenseClkLF

LFACLK (LF clock) is used.

lesenseClkHF

AUXHFRCO (HF clock) is used.

Definition at line 386 of file em_lesense.h .

enum LESENSE_ChCompMode_TypeDef

Compare modes for counter comparison.

Enumerator
lesenseCompModeLess

Comparison evaluates to 1 if the sensor data is less than the counter threshold, or if the ACMP output is 0.

lesenseCompModeGreaterOrEq

Comparison evaluates to 1 if the sensor data is greater than, or equal to the counter threshold, or if the ACMP output is 1.

Definition at line 395 of file em_lesense.h .

enum LESENSE_ChEvalMode_TypeDef

Sensor evaluation modes.

Enumerator
lesenseEvalModeThreshold

Threshold comparison evaluation mode. In this mode the sensor data is compared to the configured threshold value. Two possible comparison operators can be used on the sensor data, either >= (GE) or < (LT). Which operator to use is given using the LESENSE_ChDesc_TypeDef::compMode member.

lesenseEvalModeSlidingWindow

Sliding window evaluation mode. In this mode the sensor data is evaluated against the upper and lower limits of a window range. The windows range is defined by a base value and a window size.

lesenseEvalModeStepDetection

Step detection evaluation mode. In this mode the sensor data is compared to the sensor data from the previous measurement. The sensor evaluation will result in a "1" if the difference between the current measurement and the previous one is greater than a configurable "step size". If the difference is less than the configured step size then the sensor evaluation will result in a "0".

Definition at line 407 of file em_lesense.h .

enum LESENSE_ChIntMode_TypeDef

Interrupt generation setup for CHx interrupt flag.

Enumerator
lesenseSetIntNone

No interrupt is generated.

lesenseSetIntLevel

Set interrupt flag if the sensor triggers.

lesenseSetIntPosEdge

Set interrupt flag on positive edge of the sensor state.

lesenseSetIntNegEdge

Set interrupt flag on negative edge of the sensor state.

Definition at line 327 of file em_lesense.h .

enum LESENSE_ChPinExMode_TypeDef

Channel pin mode for the excitation phase of the scan sequence.

Enumerator
lesenseChPinExDis

Channel pin is disabled.

lesenseChPinExHigh

Channel pin is configured as push-pull, driven HIGH.

lesenseChPinExLow

Channel pin is configured as push-pull, driven LOW.

lesenseChPinExDACOut

DAC output (only available on channel 0, 1, 2, 3, 12, 13, 14 and 15)

Definition at line 342 of file em_lesense.h .

enum LESENSE_ChPinIdleMode_TypeDef

Channel pin mode for the idle phase of the scan sequence.

Enumerator
lesenseChPinIdleDis

Channel pin is disabled in idle phase. Note: this value could be used for all channels.

lesenseChPinIdleHigh

Channel pin is configured as push-pull, driven HIGH in idle phase. Note: this value could be used for all channels.

lesenseChPinIdleLow

Channel pin is configured as push-pull, driven LOW in idle phase. Note: this value could be used for all channels.

lesenseChPinIdleDACC

Channel pin is connected to DAC output in idle phase. Note: this value could be used for all channels.

Definition at line 357 of file em_lesense.h .

enum LESENSE_ChSampleMode_TypeDef

Compare source selection for sensor sampling.

Enumerator
lesenseSampleModeCounter

Counter output will be used in comparison.

lesenseSampleModeACMP

ACMP output will be used in comparison.

lesenseSampleModeADC

ADC output will be used in comparison.

lesenseSampleModeADCDiff

Differential ADC output will be used in comparison.

Definition at line 310 of file em_lesense.h .

enum LESENSE_ClkPresc_TypeDef

Clock divisors for controlling the prescaling factor of the period counter. Note: these enumeration values are being used for different clock division related configuration parameters (hfPresc, lfPresc, pcPresc).

Enumerator
lesenseClkDiv_1

Divide clock by 1.

lesenseClkDiv_2

Divide clock by 2.

lesenseClkDiv_4

Divide clock by 4.

lesenseClkDiv_8

Divide clock by 8.

lesenseClkDiv_16

Divide clock by 16.

lesenseClkDiv_32

Divide clock by 32.

lesenseClkDiv_64

Divide clock by 64.

lesenseClkDiv_128

Divide clock by 128.

Definition at line 70 of file em_lesense.h .

enum LESENSE_ControlACMP_TypeDef

ACMPx control configuration.

Enumerator
lesenseACMPModeDisable

LESENSE does not control the ACMPx. Note: this value could be used for both ACMP0 and ACMP1.

lesenseACMPModeMux

LESENSE controls the input mux of ACMPx. Note: this value could be used for both ACMP0 and ACMP1.

lesenseACMPModeMuxThres

LESENSE controls the input mux of and the threshold value of ACMPx. Note: this value could be used for both ACMP0 and ACMP1.

Definition at line 271 of file em_lesense.h .

enum LESENSE_ControlDACData_TypeDef

DAC CHx data control configuration.

Enumerator
lesenseDACIfData

DAC channel x data is defined by DAC_CHxDATA register. Note: this value could be used for both DAC Ch0 and Ch1.

lesenseThres

DAC channel x data is defined by THRES in LESENSE_CHx_INTERACT. Note: this value could be used for both DAC Ch0 and Ch1.

Definition at line 199 of file em_lesense.h .

enum LESENSE_DecInput_TypeDef

Decoder input source configuration.

Enumerator
lesenseDecInputSensorSt

The SENSORSTATE register is used as input to the decoder.

lesenseDecInputPRS

PRS channels are used as input to the decoder.

Definition at line 301 of file em_lesense.h .

enum LESENSE_DMAWakeUp_TypeDef

Modes of operation for DMA wakeup from EM2.

Enumerator
lesenseDMAWakeUpDisable

No DMA wakeup from EM2.

lesenseDMAWakeUpBufValid

DMA wakeup from EM2 when data is valid in the result buffer.

lesenseDMAWakeUpBufLevel

DMA wakeup from EM2 when the resultbuffer is full/halffull, depending on RESBIDL configuration in LESENSE_CTRL register (selected by resBufTrigLevel in LESENSE_ResBufTrigLevel_TypeDef descriptor structure).

Definition at line 154 of file em_lesense.h .

enum LESENSE_PRSSel_TypeDef

PRS sources. Note: these enumeration values are being used for different PRS related configuration parameters.

Enumerator
lesensePRSCh0

PRS channel 0.

lesensePRSCh1

PRS channel 1.

lesensePRSCh2

PRS channel 2.

lesensePRSCh3

PRS channel 3.

lesensePRSCh4

PRS channel 4.

lesensePRSCh5

PRS channel 5.

lesensePRSCh6

PRS channel 6.

lesensePRSCh7

PRS channel 7.

lesensePRSCh8

PRS channel 8.

lesensePRSCh9

PRS channel 9.

lesensePRSCh10

PRS channel 10.

lesensePRSCh11

PRS channel 11.

Definition at line 96 of file em_lesense.h .

enum LESENSE_ScanConfSel_TypeDef

Scan configuration.

Enumerator
lesenseScanConfDirMap

The channel configuration registers (CHx_CONF) used are directly mapped to the channel number.

lesenseScanConfInvMap

The channel configuration registers used are CHx+8_CONF for channels 0-7 and CHx-8_CONF for channels 8-15.

lesenseScanConfToggle

The channel configuration registers used toggles between CHX_SCANCONF and CHX+8_SCANCONF when channel x triggers.

lesenseScanConfDecDef

The decoder state defines the channel configuration register (CHx_CONF) to be used.

Definition at line 180 of file em_lesense.h .

enum LESENSE_ScanMode_TypeDef

Scan modes.

Enumerator
lesenseScanStartPeriodic

New scan is started each time the period counter overflows.

lesenseScanStartOneShot

Single scan is performed when LESENSE_ScanStart() is called.

lesenseScanStartPRS

New scan is triggered by pulse on PRS channel.

Definition at line 82 of file em_lesense.h .

enum LESENSE_StTransAct_TypeDef

Transition action modes.

Enumerator
lesenseTransActNone

No PRS pulses generated (if PRSCOUNT == 0). Do not count (if PRSCOUNT == 1).

lesenseTransActPRS0

Generate pulse on LESPRS0 (if PRSCOUNT == 0).

lesenseTransActPRS1

Generate pulse on LESPRS1 (if PRSCOUNT == 0).

lesenseTransActPRS01

Generate pulse on LESPRS0 and LESPRS1 (if PRSCOUNT == 0).

lesenseTransActPRS2

Generate pulse on LESPRS2 (for both PRSCOUNT == 0 and PRSCOUNT == 1).

lesenseTransActPRS02

Generate pulse on LESPRS0 and LESPRS2 (if PRSCOUNT == 0).

lesenseTransActPRS12

Generate pulse on LESPRS1 and LESPRS2 (if PRSCOUNT == 0).

lesenseTransActPRS012

Generate pulse on LESPRS0, LESPRS1 and LESPRS2 (if PRSCOUNT == 0).

lesenseTransActUp

Count up (if PRSCOUNT == 1).

lesenseTransActDown

Count down (if PRSCOUNT == 1).

lesenseTransActUpAndPRS2

Count up and generate pulse on LESPRS2 (if PRSCOUNT == 1).

lesenseTransActDownAndPRS2

Count down and generate pulse on LESPRS2 (if PRSCOUNT == 1).

Definition at line 446 of file em_lesense.h .

enum LESENSE_WarmupMode_TypeDef

Warm up modes. ACMP and DAC duty cycle mode configuration.

Enumerator
lesenseWarmupModeNormal

ACMPs and DACs are shut down when LESENSE is idle.

lesenseWarmupModeACMP

ACMPs are kept powered up when LESENSE is idle.

lesenseWarmupModeDAC

The DAC is kept powered up when LESENSE is idle.

lesenseWarmupModeKeepWarm

ACMPs and the DAC are kept powered up when LESENSE is idle.

Definition at line 286 of file em_lesense.h .

Function Documentation

void LESENSE_AltExConfig ( const LESENSE_ConfAltEx_TypeDef * confAltEx )

Configure the LESENSE alternate excitation modes.

This function configures the alternate excitation channels of the LESENSE interface. Please refer to the configuration parameter type definition ( LESENSE_ConfAltEx_TypeDef ) for more details.

Note
Parameter useAltEx must be true in the channel configuration structrure ( LESENSE_ChDesc_TypeDef ) in order to use alternate excitation pins on the channel.
Parameters
[in] confAltEx Configuration structure for LESENSE alternate excitation pins.

Definition at line 605 of file em_lesense.c .

References _LESENSE_CTRL_ALTEXMAP_SHIFT , LESENSE_ConfAltEx_TypeDef::AltEx , LESENSE_ConfAltEx_TypeDef::altExMap , LESENSE_AltExDesc_TypeDef::alwaysEx , BUS_RegBitWrite() , LESENSE_AltExDesc_TypeDef::enablePin , LESENSE_AltExDesc_TypeDef::idleConf , LESENSE , lesenseAltExMapALTEX , and lesenseAltExMapCH .

__STATIC_INLINE uint32_t LESENSE_ChannelActiveGet ( void )

Get the currently active channel index.

Returns
This function returns the value of LESENSE_CHINDEX register that contains the index of the currently active channel (0-15).

Definition at line 1258 of file em_lesense.h .

References LESENSE .

void LESENSE_ChannelAllConfig ( const LESENSE_ChAll_TypeDef * confChAll )

Configure all (16) LESENSE sensor channels.

This function configures all the sensor channels of LESENSE interface. Please refer to the configuration parameter type definition ( LESENSE_ChAll_TypeDef ) for more details.

Note
Channels can be configured individually using LESENSE_ChannelConfig() function. Notice that pins used by the LESENSE module must be properly configured by the user explicitly, in order for the LESENSE to work as intended. (When configuring pins, one should remember to consider the sequence of configuration, in order to avoid unintended pulses/glitches on output pins.)
Parameters
[in] confChAll Configuration structure for all (16) LESENSE sensor channels.

Definition at line 466 of file em_lesense.c .

References LESENSE_ChAll_TypeDef::Ch , LESENSE_ChannelConfig() , and LESENSE_NUM_CHANNELS .

Referenced by CAPLESENSE_setupLESENSE() .

void LESENSE_ChannelConfig ( const LESENSE_ChDesc_TypeDef * confCh,
uint32_t chIdx
)

Configure a single LESENSE sensor channel.

This function configures a single sensor channel of the LESENSE interface. Please refer to the configuration parameter type definition ( LESENSE_ChDesc_TypeDef ) for more details.

Note
This function has been designed to minimize the effects of sensor channel reconfiguration while LESENSE is in operation, however one shall be aware of these effects and the right timing of calling this function. Parameter useAltEx must be true in the channel configuration in order to use alternate excitation pins.
Parameters
[in] confCh Configuration structure for a single LESENSE sensor channel.
[in] chIdx Channel index to configure (0-15).

Definition at line 499 of file em_lesense.c .

References _LESENSE_CH_EVAL_DECODE_SHIFT , _LESENSE_CH_EVAL_MODE_MASK , _LESENSE_CH_EVAL_MODE_SHIFT , _LESENSE_CH_EVAL_SCANRESINV_SHIFT , _LESENSE_CH_EVAL_STRSAMPLE_SHIFT , _LESENSE_CH_INTERACT_ALTEX_SHIFT , _LESENSE_CH_INTERACT_EXCLK_SHIFT , _LESENSE_CH_INTERACT_SAMPLECLK_SHIFT , _LESENSE_CH_TIMING_EXTIME_MASK , _LESENSE_CH_TIMING_EXTIME_SHIFT , _LESENSE_CH_TIMING_MEASUREDLY_MASK , _LESENSE_CH_TIMING_MEASUREDLY_SHIFT , _LESENSE_CH_TIMING_SAMPLEDLY_MASK , _LESENSE_CH_TIMING_SAMPLEDLY_SHIFT , LESENSE_ChDesc_TypeDef::acmpThres , BUS_RegBitWrite() , LESENSE_ChDesc_TypeDef::chPinExMode , LESENSE_ChDesc_TypeDef::chPinIdleMode , LESENSE_ChDesc_TypeDef::cntThres , LESENSE_ChDesc_TypeDef::compMode , LESENSE_ChDesc_TypeDef::enaInt , LESENSE_ChDesc_TypeDef::enaPin , LESENSE_ChDesc_TypeDef::enaScanCh , LESENSE_ChDesc_TypeDef::evalMode , LESENSE_ChDesc_TypeDef::exClk , LESENSE_ChDesc_TypeDef::exTime , LESENSE_ChDesc_TypeDef::intMode , LESENSE_ChDesc_TypeDef::invRes , LESENSE , LESENSE_ChannelThresSet() , LESENSE_ChannelTimingSet() , LESENSE_NUM_CHANNELS , lesenseChPinExDACOut , LESENSE_ChDesc_TypeDef::measDelay , LESENSE_ChDesc_TypeDef::sampleClk , LESENSE_ChDesc_TypeDef::sampleDelay , LESENSE_ChDesc_TypeDef::sampleMode , LESENSE_ChDesc_TypeDef::shiftRes , LESENSE_ChDesc_TypeDef::storeCntRes , and LESENSE_ChDesc_TypeDef::useAltEx .

Referenced by LESENSE_ChannelAllConfig() .

void LESENSE_ChannelEnable ( uint8_t chIdx,
bool enaScanCh,
bool enaPin
)

Enable/disable LESENSE scan channel and the pin assigned to it.

Use this function to enable/disable a selected LESENSE scan channel and the pin assigned to.

Note
Users can enable/disable scan channels and the channel pin by LESENSE_ChannelConfig() function, but only with a significant overhead. This simple function serves the purpose of controlling these parameters after the channel has been configured.
Parameters
[in] chIdx Identifier of the scan channel. Valid range: 0-15.
[in] enaScanCh Enable/disable the selected scan channel by setting this parameter to true/false respectively.
[in] enaPin Enable/disable the pin assigned to the channel selected by chIdx .

Definition at line 688 of file em_lesense.c .

References BUS_RegBitWrite() , and LESENSE .

void LESENSE_ChannelEnableMask ( uint16_t chMask,
uint16_t pinMask
)

Enable/disable LESENSE scan channel and the pin assigned to it.

Use this function to enable/disable LESENSE scan channels and the pins assigned to them using a mask.

Note
Users can enable/disable scan channels and channel pins by using LESENSE_ChannelAllConfig() function, but only with a significant overhead. This simple function serves the purpose of controlling these parameters after the channel has been configured.
Parameters
[in] chMask Set the corresponding bit to 1 to enable, 0 to disable the selected scan channel.
[in] pinMask Set the corresponding bit to 1 to enable, 0 to disable the pin on selected channel.

Definition at line 724 of file em_lesense.c .

References LESENSE .

void LESENSE_ChannelSlidingWindow ( uint8_t chIdx,
uint32_t windowSize,
uint32_t initValue
)

Configure Sliding Window evaluation mode for a specific channel.

This function will configure the evaluation mode, the initial sensor measurement (COMPTHRES) and the window size. For other channel related configuration see the LESENSE_ChannelConfig() function.

Warning
Beware that the step size and window size configuration are global to all LESENSE channels and use the same register field in the hardware. This means that any windowSize configuration passed to this function will apply for all channels and override all other stepSize/windowSize configurations.
Parameters
[in] chIdx Identifier of the scan channel. Valid range: 0-15.
[in] windowSize Window size to be used on all channels.
[in] initValue The initial sensor value for the channel.

Definition at line 868 of file em_lesense.c .

References _LESENSE_CH_EVAL_COMPTHRES_MASK , _LESENSE_CH_EVAL_COMPTHRES_SHIFT , _LESENSE_CH_EVAL_MODE_MASK , LESENSE_CH_TypeDef::EVAL , LESENSE , LESENSE_CH_EVAL_MODE_SLIDINGWIN , and LESENSE_WindowSizeSet() .

void LESENSE_ChannelStepDetection ( uint8_t chIdx,
uint32_t stepSize,
uint32_t initValue
)

Configure step detection evaluation mode for a specific channel.

This function will configure the evaluation mode, the initial sensor measurement (COMPTHRES) and the window size. For other channel related configuration see the LESENSE_ChannelConfig() function.

Warning
Beware that the step size and window size configuration are global to all LESENSE channels and use the same register field in the hardware. This means that any stepSize configuration passed to this function will apply for all channels and override all other stepSize/windowSize configurations.
Parameters
[in] chIdx Identifier of the scan channel. Valid range: 0-15.
[in] stepSize Step size to be used on all channels.
[in] initValue The initial sensor value for the channel.

Definition at line 905 of file em_lesense.c .

References _LESENSE_CH_EVAL_COMPTHRES_MASK , _LESENSE_CH_EVAL_COMPTHRES_SHIFT , _LESENSE_CH_EVAL_MODE_MASK , LESENSE_CH_TypeDef::EVAL , LESENSE , LESENSE_CH_EVAL_MODE_STEPDET , and LESENSE_StepSizeSet() .

void LESENSE_ChannelThresSet ( uint8_t chIdx,
uint16_t acmpThres,
uint16_t cntThres
)

Set LESENSE channel threshold parameters.

Use this function to set threshold parameters on a selected LESENSE channel.

Note
Users can configure the channel threshold parameters by LESENSE_ChannelConfig() function, but only with a significant overhead. This simple function serves the purpose of controlling these parameters after the channel has been configured.
Parameters
[in] chIdx Identifier of the scan channel. Valid range: 0-15.
[in] acmpThres ACMP threshold.
  • If perCtrl.dacCh0Data or perCtrl.dacCh1Data is set to lesenseDACIfData , acmpThres defines the 12-bit DAC data in the corresponding data register of the DAC interface (DACn_CH0DATA and DACn_CH1DATA). In this case, the valid range is: 0-4095 (12 bits).
  • If perCtrl.dacCh0Data or perCtrl.dacCh1Data is set to #lesenseACMPThres, acmpThres defines the 6-bit Vdd scaling factor of ACMP negative input (VDDLEVEL in ACMP_INPUTSEL register). In this case, the valid range is: 0-63 (6 bits).
[in] cntThres Decision threshold for counter comparison. Valid range: 0-65535 (16 bits).

Definition at line 814 of file em_lesense.c .

References _LESENSE_CH_EVAL_COMPTHRES_MASK , _LESENSE_CH_EVAL_COMPTHRES_SHIFT , LESENSE , and LESENSE_NUM_CHANNELS .

Referenced by CAPLESENSE_setupLESENSE() , and LESENSE_ChannelConfig() .

void LESENSE_ChannelTimingSet ( uint8_t chIdx,
uint8_t exTime,
uint8_t sampleDelay,
uint16_t measDelay
)

Set LESENSE channel timing parameters.

Use this function to set timing parameters on a selected LESENSE channel.

Note
Users can configure the channel timing parameters by LESENSE_ChannelConfig() function, but only with a significant overhead. This simple function serves the purpose of controlling these parameters after the channel has been configured.
Parameters
[in] chIdx Identifier of the scan channel. Valid range: 0-15.
[in] exTime Excitation time on chIdx. Excitation will last exTime+1 excitation clock cycles. Valid range: 0-63 (6 bits).
[in] sampleDelay Sample delay on chIdx. Sampling will occur after sampleDelay+1 sample clock cycles. Valid range: 0-127 (7 bits).
[in] measDelay Measure delay on chIdx. Sensor measuring is delayed for measDelay+1 excitation clock cycles. Valid range: 0-127 (7 bits).

Definition at line 760 of file em_lesense.c .

References _LESENSE_CH_TIMING_EXTIME_MASK , _LESENSE_CH_TIMING_EXTIME_SHIFT , _LESENSE_CH_TIMING_MEASUREDLY_MASK , _LESENSE_CH_TIMING_MEASUREDLY_SHIFT , _LESENSE_CH_TIMING_SAMPLEDLY_MASK , _LESENSE_CH_TIMING_SAMPLEDLY_SHIFT , and LESENSE .

Referenced by LESENSE_ChannelConfig() .

void LESENSE_ClkDivSet ( LESENSE_ChClk_TypeDef clk,
LESENSE_ClkPresc_TypeDef clkDiv
)

Set clock division for LESENSE timers.

Use this function to configure the clock division for the LESENSE timers used for excitation timing. The division setting is global, but the clock source can be selected for each channel using LESENSE_ChannelConfig() function, please refer to the documentation of it for more details.

Note
If AUXHFRCO is used for excitation timing, LFACLK can not exceed 500kHz. LFACLK can not exceed 50kHz if the ACMP threshold level (ACMPTHRES) is not equal for all channels.
Parameters
[in] clk Select clock to prescale.
  • lesenseClkHF - set AUXHFRCO clock divisor for HF timer.
  • lesenseClkLF - set LFACLKles clock divisor for LF timer.
[in] clkDiv Clock divisor value. Valid range depends on the clk value.

Definition at line 407 of file em_lesense.c .

References _LESENSE_TIMCTRL_AUXPRESC_MASK , _LESENSE_TIMCTRL_AUXPRESC_SHIFT , _LESENSE_TIMCTRL_LFPRESC_MASK , _LESENSE_TIMCTRL_LFPRESC_SHIFT , LESENSE , lesenseClkDiv_8 , lesenseClkHF , and lesenseClkLF .

Referenced by CAPLESENSE_setupLESENSE() .

void LESENSE_DecoderPrsOut ( bool enable,
uint32_t decMask,
uint32_t decVal
)

Enable or disable PRS output from the LESENSE decoder.

Parameters
[in] enable enable/disable the PRS output from the LESENSE decoder. true to enable and false to disable.
[in] decMask Decoder state compare value mask
[in] decVal Decoder state compare value.

Definition at line 1087 of file em_lesense.c .

References _LESENSE_PRSCTRL_DECCMPEN_SHIFT , _LESENSE_PRSCTRL_DECCMPMASK_SHIFT , _LESENSE_PRSCTRL_DECCMPVAL_SHIFT , and LESENSE .

void LESENSE_DecoderStart ( void )

Start LESENSE decoder.

Note
This function will wait for any pending previous write operation to the CMD register to complete before accessing the CMD register. It will also wait for the write operation to the CMD register to complete before returning. Each write operation to the CMD register may take up to 3 LF clock cycles, so the user should expect some delay. The user may implement a separate function to write multiple command bits in the CMD register in one single operation in order to optimize an application.

Definition at line 1169 of file em_lesense.c .

References LESENSE , LESENSE_CMD_DECODE , and LESENSE_SYNCBUSY_CMD .

void LESENSE_DecoderStateAllConfig ( const LESENSE_DecStAll_TypeDef * confDecStAll )

Configure all LESENSE decoder states.

This function configures all the decoder states of the LESENSE interface. Please refer to the configuration parameter type definition ( LESENSE_DecStAll_TypeDef ) for more details.

Note
Decoder states can be configured individually using LESENSE_DecoderStateConfig() function.
Parameters
[in] confDecStAll Configuration structure for all (16 or 32) LESENSE decoder states.

Definition at line 975 of file em_lesense.c .

References LESENSE_DecoderStateConfig() , LESENSE_NUM_DECODER_STATES , and LESENSE_DecStAll_TypeDef::St .

void LESENSE_DecoderStateConfig ( const LESENSE_DecStDesc_TypeDef * confDecSt,
uint32_t decSt
)

Configure a single LESENSE decoder state.

This function configures a single decoder state of the LESENSE interface. Please refer to the configuration parameter type definition ( LESENSE_DecStDesc_TypeDef ) for more details.

Parameters
[in] confDecSt Configuration structure for a single LESENSE decoder state.
[in] decSt Decoder state index to configure (0-15) or (0-31) depending on device.

Definition at line 1001 of file em_lesense.c .

References _LESENSE_ST_TCONFA_CHAIN_SHIFT , _LESENSE_ST_TCONFA_COMP_SHIFT , _LESENSE_ST_TCONFA_MASK_SHIFT , _LESENSE_ST_TCONFA_NEXTSTATE_SHIFT , _LESENSE_ST_TCONFA_SETIF_SHIFT , _LESENSE_ST_TCONFB_COMP_SHIFT , _LESENSE_ST_TCONFB_MASK_SHIFT , _LESENSE_ST_TCONFB_NEXTSTATE_SHIFT , _LESENSE_ST_TCONFB_SETIF_SHIFT , LESENSE_DecStDesc_TypeDef::chainDesc , LESENSE_DecStCond_TypeDef::compMask , LESENSE_DecStCond_TypeDef::compVal , LESENSE_DecStDesc_TypeDef::confA , LESENSE_DecStDesc_TypeDef::confB , LESENSE , LESENSE_NUM_DECODER_STATES , LESENSE_DecStCond_TypeDef::nextState , LESENSE_DecStCond_TypeDef::prsAct , and LESENSE_DecStCond_TypeDef::setInt .

Referenced by LESENSE_DecoderStateAllConfig() .

uint32_t LESENSE_DecoderStateGet ( void )

Get the current state of the LESENSE decoder.

Returns
This function returns the value of LESENSE_DECSTATE register that represents the current state of the LESENSE decoder.

Definition at line 1067 of file em_lesense.c .

References _LESENSE_DECSTATE_DECSTATE_MASK , and LESENSE .

void LESENSE_DecoderStateSet ( uint32_t decSt )

Set LESENSE decoder state.

This function can be used for setting the initial state of the LESENSE decoder.

Note
Make sure the LESENSE decoder state is initialized by this function before enabling the decoder!
Parameters
[in] decSt Decoder state to set as current state. Valid range: 0-15 or 0-31 depending on device.

Definition at line 1052 of file em_lesense.c .

References _LESENSE_DECSTATE_DECSTATE_MASK , and LESENSE .

Referenced by LESENSE_Init() .

__STATIC_INLINE void LESENSE_DecoderStop ( void )

Stop LESENSE decoder.

This function disables the LESENSE decoder by setting the command to the LESENSE_DECCTRL register.

Definition at line 1199 of file em_lesense.h .

References LESENSE , and LESENSE_DECCTRL_DISABLE .

void LESENSE_Init ( const LESENSE_Init_TypeDef * init,
bool reqReset
)

Initialize the LESENSE module.

This function configures the main parameters of the LESENSE interface. Please refer to the initialization parameter type definition ( LESENSE_Init_TypeDef ) for more details.

Note
LESENSE_Init() has been designed for initializing LESENSE once in an operation cycle. Be aware of the effects of reconfiguration if using this function from multiple sources in your code. This function has not been designed to be re-entrant. Requesting reset by setting reqReset to true is required in each reset or power-on cycle in order to configure the default values of the RAM mapped LESENSE registers. Notice that GPIO pins used by the LESENSE module must be properly configured by the user explicitly, in order for the LESENSE to work as intended. (When configuring pins, one should remember to consider the sequence of configuration, in order to avoid unintended pulses/glitches on output pins.)
Parameters
[in] init LESENSE initialization structure.
[in] reqReset Request to call LESENSE_Reset() first in order to initialize all LESENSE registers with the default value.

Definition at line 117 of file em_lesense.c .

References _LESENSE_CTRL_BUFOW_SHIFT , _LESENSE_CTRL_DEBUGRUN_SHIFT , _LESENSE_CTRL_DUALSAMPLE_SHIFT , _LESENSE_CTRL_PRSSEL_SHIFT , _LESENSE_CTRL_STRSCANRES_SHIFT , _LESENSE_DECCTRL_ERRCHK_SHIFT , _LESENSE_DECCTRL_HYSTIRQ_SHIFT , _LESENSE_DECCTRL_HYSTPRS0_SHIFT , _LESENSE_DECCTRL_HYSTPRS1_SHIFT , _LESENSE_DECCTRL_HYSTPRS2_SHIFT , _LESENSE_DECCTRL_INTMAP_SHIFT , _LESENSE_DECCTRL_PRSCNT_SHIFT , _LESENSE_DECCTRL_PRSSEL0_SHIFT , _LESENSE_DECCTRL_PRSSEL1_SHIFT , _LESENSE_DECCTRL_PRSSEL2_SHIFT , _LESENSE_DECCTRL_PRSSEL3_SHIFT , _LESENSE_PERCTRL_ACMP0INV_SHIFT , _LESENSE_PERCTRL_ACMP0MODE_SHIFT , _LESENSE_PERCTRL_ACMP1INV_SHIFT , _LESENSE_PERCTRL_ACMP1MODE_SHIFT , _LESENSE_PERCTRL_DACCH0DATA_SHIFT , _LESENSE_PERCTRL_DACCH0EN_SHIFT , _LESENSE_PERCTRL_DACCH1DATA_SHIFT , _LESENSE_PERCTRL_DACCH1EN_SHIFT , _LESENSE_PERCTRL_DACCONVTRIG_MASK , _LESENSE_PERCTRL_DACCONVTRIG_SHIFT , _LESENSE_PERCTRL_DACSTARTUP_SHIFT , _LESENSE_TIMCTRL_AUXSTARTUP_MASK , _LESENSE_TIMCTRL_AUXSTARTUP_SHIFT , LESENSE_PerCtrlDesc_TypeDef::acmp0Mode , LESENSE_PerCtrlDesc_TypeDef::acmp1Mode , LESENSE_CoreCtrlDesc_TypeDef::biasMode , LESENSE_CoreCtrlDesc_TypeDef::bufOverWr , LESENSE_CoreCtrlDesc_TypeDef::bufTrigLevel , LESENSE_DecCtrlDesc_TypeDef::chkState , LESENSE_Init_TypeDef::coreCtrl , LESENSE_PerCtrlDesc_TypeDef::dacCh0Data , LESENSE_PerCtrlDesc_TypeDef::dacCh0En , LESENSE_PerCtrlDesc_TypeDef::dacCh1Data , LESENSE_PerCtrlDesc_TypeDef::dacCh1En , LESENSE_PerCtrlDesc_TypeDef::dacScan , LESENSE_PerCtrlDesc_TypeDef::dacStartupHalf , LESENSE_CoreCtrlDesc_TypeDef::debugRun , LESENSE_Init_TypeDef::decCtrl , LESENSE_DecCtrlDesc_TypeDef::decInput , LESENSE_TimeCtrlDesc_TypeDef::delayAuxStartup , LESENSE_CoreCtrlDesc_TypeDef::dualSample , LESENSE_DecCtrlDesc_TypeDef::hystIRQ , LESENSE_DecCtrlDesc_TypeDef::hystPRS0 , LESENSE_DecCtrlDesc_TypeDef::hystPRS1 , LESENSE_DecCtrlDesc_TypeDef::hystPRS2 , LESENSE_DecCtrlDesc_TypeDef::initState , LESENSE_DecCtrlDesc_TypeDef::intMap , LESENSE_CoreCtrlDesc_TypeDef::invACMP0 , LESENSE_CoreCtrlDesc_TypeDef::invACMP1 , LESENSE , LESENSE_DecoderStateSet() , LESENSE_Reset() , LESENSE_ScanModeSet() , LESENSE_StartDelaySet() , LESENSE_Init_TypeDef::perCtrl , LESENSE_DecCtrlDesc_TypeDef::prsChSel0 , LESENSE_DecCtrlDesc_TypeDef::prsChSel1 , LESENSE_DecCtrlDesc_TypeDef::prsChSel2 , LESENSE_DecCtrlDesc_TypeDef::prsChSel3 , LESENSE_DecCtrlDesc_TypeDef::prsCount , LESENSE_CoreCtrlDesc_TypeDef::prsSel , LESENSE_CoreCtrlDesc_TypeDef::scanConfSel , LESENSE_CoreCtrlDesc_TypeDef::scanStart , LESENSE_TimeCtrlDesc_TypeDef::startDelay , LESENSE_CoreCtrlDesc_TypeDef::storeScanRes , LESENSE_Init_TypeDef::timeCtrl , LESENSE_CoreCtrlDesc_TypeDef::wakeupOnDMA , and LESENSE_PerCtrlDesc_TypeDef::warmupMode .

Referenced by CAPLESENSE_setupLESENSE() .

__STATIC_INLINE void LESENSE_IntClear ( uint32_t flags )

Clear one or more pending LESENSE interrupts.

Parameters
[in] flags Pending LESENSE interrupt sources to clear. Use a set of interrupt flags OR-ed together to clear multiple interrupt sources of the LESENSE module (LESENSE_IF_nnn).

Definition at line 1360 of file em_lesense.h .

References LESENSE .

Referenced by CAPLESENSE_setupLESENSE() , and LESENSE_IRQHandler() .

__STATIC_INLINE void LESENSE_IntDisable ( uint32_t flags )

Disable one or more LESENSE interrupts.

Parameters
[in] flags LESENSE interrupt sources to disable. Use a set of interrupt flags OR-ed together to disable multiple interrupt sources of the LESENSE module (LESENSE_IF_nnn).

Definition at line 1388 of file em_lesense.h .

References LESENSE .

Referenced by CAPLESENSE_setupLESENSE() .

__STATIC_INLINE void LESENSE_IntEnable ( uint32_t flags )

Enable one or more LESENSE interrupts.

Parameters
[in] flags LESENSE interrupt sources to enable. Use a set of interrupt flags OR-ed together to enable multiple interrupt sources of the LESENSE module (LESENSE_IF_nnn).

Definition at line 1374 of file em_lesense.h .

References LESENSE .

Referenced by CAPLESENSE_setupLESENSE() .

__STATIC_INLINE uint32_t LESENSE_IntGet ( void )

Get pending LESENSE interrupt flags.

Note
The event bits are not cleared by the use of this function.
Returns
Pending LESENSE interrupt sources. The OR combination of valid interrupt flags of the LESENSE module (LESENSE_IF_nnn).

Definition at line 1418 of file em_lesense.h .

References LESENSE .

__STATIC_INLINE uint32_t LESENSE_IntGetEnabled ( void )

Get enabled and pending LESENSE interrupt flags.

Useful for handling more interrupt sources in the same interrupt handler.

Note
The event bits are not cleared by the use of this function.
Returns
Pending and enabled LESENSE interrupt sources. The return value is the bitwise AND combination of
  • the OR combination of enabled interrupt sources in LESENSE_IEN_nnn register (LESENSE_IEN_nnn) and
  • the OR combination of valid interrupt flags of the LESENSE module (LESENSE_IF_nnn).

Definition at line 1441 of file em_lesense.h .

References LESENSE .

Referenced by LESENSE_IRQHandler() .

__STATIC_INLINE void LESENSE_IntSet ( uint32_t flags )

Set one or more pending LESENSE interrupts from SW.

Parameters
[in] flags LESENSE interrupt sources to set to pending. Use a set of interrupt flags OR-ed together to set multiple interrupt sources of the LESENSE module (LESENSE_IFS_nnn).

Definition at line 1402 of file em_lesense.h .

References LESENSE .

void LESENSE_Reset ( void )

Reset the LESENSE module.

Use this function to reset the LESENSE registers.

Note
Resetting LESENSE registers is required in each reset or power-on cycle in order to configure the default values of the RAM mapped LESENSE registers. LESENSE_Reset() can be called on initialization by setting the reqReset parameter to true in LESENSE_Init() .

Definition at line 1226 of file em_lesense.c .

References _LESENSE_ALTEXCONF_RESETVALUE , _LESENSE_BIASCTRL_RESETVALUE , _LESENSE_CH_EVAL_RESETVALUE , _LESENSE_CH_INTERACT_RESETVALUE , _LESENSE_CH_TIMING_RESETVALUE , _LESENSE_CHEN_RESETVALUE , _LESENSE_CTRL_RESETVALUE , _LESENSE_DECCTRL_RESETVALUE , _LESENSE_EVALCTRL_RESETVALUE , _LESENSE_IDLECONF_RESETVALUE , _LESENSE_IEN_RESETVALUE , _LESENSE_IFC_MASK , _LESENSE_PERCTRL_RESETVALUE , _LESENSE_PRSCTRL_RESETVALUE , _LESENSE_ROUTEPEN_RESETVALUE , _LESENSE_ST_TCONFA_RESETVALUE , _LESENSE_ST_TCONFB_RESETVALUE , LESENSE , LESENSE_CMD_CLEARBUF , LESENSE_CMD_STOP , LESENSE_DECCTRL_DISABLE , LESENSE_NUM_CHANNELS , LESENSE_NUM_DECODER_STATES , and LESENSE_SYNCBUSY_CMD .

Referenced by LESENSE_Init() .

void LESENSE_ResultBufferClear ( void )

Clear result buffer.

Note
This function will wait for any pending previous write operation to the CMD register to complete before accessing the CMD register. It will also wait for the write operation to the CMD register to complete before returning. Each write operation to the CMD register may take up to 3 LF clock cycles, so the user should expect some delay. The user may implement a separate function to write multiple command bits in the CMD register in one single operation in order to optimize an application.

Definition at line 1198 of file em_lesense.c .

References LESENSE , LESENSE_CMD_CLEARBUF , and LESENSE_SYNCBUSY_CMD .

Referenced by CAPLESENSE_setupLESENSE() .

uint32_t LESENSE_ScanFreqSet ( uint32_t refFreq,
uint32_t scanFreq
)

Set scan frequency for periodic scanning.

This function only applies to LESENSE if period counter is being used as a trigger for scan start. The calculation is based on the following formula: Fscan = LFACLKles / ((1+PCTOP)*2^PCPRESC)

Note
Note that the calculation does not necessarily result in the requested scan frequency due to integer division. Check the return value for the resulted scan frequency.
Parameters
[in] refFreq Select reference LFACLK clock frequency in Hz. If set to 0, the current clock frequency is being used as a reference.
[in] scanFreq Set the desired scan frequency in Hz.
Returns
Frequency in Hz calculated and set by this function. Users can use this to compare the requested and set values.

Definition at line 249 of file em_lesense.c .

References _LESENSE_TIMCTRL_PCPRESC_MASK , _LESENSE_TIMCTRL_PCPRESC_SHIFT , _LESENSE_TIMCTRL_PCTOP_MASK , _LESENSE_TIMCTRL_PCTOP_SHIFT , CMU_ClockFreqGet() , cmuClock_LESENSE , LESENSE , and lesenseClkDiv_128 .

Referenced by CAPLESENSE_setupLESENSE() .

void LESENSE_ScanModeSet ( LESENSE_ScanMode_TypeDef scanMode,
bool start
)

Set scan mode of the LESENSE channels.

This function configures how the scan start is being triggered. It can be used for re-configuring the scan mode while running the application but it is also used by LESENSE_Init() for initialization.

Note
Users can configure the scan mode by LESENSE_Init() function, but only with a significant overhead. This simple function serves the purpose of controlling this parameter after the channel has been configured. Please be aware the effects of the non-atomic Read-Modify-Write cycle!
Parameters
[in] scanMode Select where to map LESENSE alternate excitation channels.
  • lesenseScanStartPeriodic - New scan is started each time the period counter overflows.
  • lesenseScanStartOneShot - Single scan is performed when LESENSE_ScanStart() is called.
  • lesenseScanStartPRS - New scan is triggered by pulse on PRS channel.
[in] start If true, LESENSE_ScanStart() is immediately issued after configuration.

Definition at line 327 of file em_lesense.c .

References _LESENSE_CTRL_SCANMODE_MASK , LESENSE , and LESENSE_ScanStart() .

Referenced by LESENSE_Init() .

__STATIC_INLINE uint32_t LESENSE_ScanResultDataBufferGet ( uint32_t idx )

Get data from the result data buffer.

Note
Make sure that the STORERES bit is set in LESENSE_CHx_EVAL, or STRSCANRES bit is set in LESENSE_CTRL, otherwise this function will return undefined value.
Parameters
[in] idx Result data buffer index. Valid range: 0-15.
Returns
This function returns the selected word from the result data buffer.

Definition at line 1312 of file em_lesense.h .

References LESENSE .

Referenced by CAPLESENSE_setupLESENSE() .

__STATIC_INLINE uint32_t LESENSE_ScanResultDataGet ( void )

Get the oldest unread data from the result buffer.

Note
Make sure that the STORERES bit is set in LESENSE_CHx_EVAL, or STRSCANRES bit is set in LESENSE_CTRL, otherwise this function will return undefined value.
Returns
This function returns the value of LESENSE_RESDATA register that contains the oldest unread counter result from the result buffer.

Definition at line 1292 of file em_lesense.h .

References LESENSE .

Referenced by LESENSE_IRQHandler() .

__STATIC_INLINE uint32_t LESENSE_ScanResultGet ( void )

Get the latest scan comparison result (1 bit / channel).

Returns
This function returns the value of LESENSE_SCANRES register that contains the comparison result of the last scan on all channels. Bit x is set if a comparison triggered on channel x, which means that the LESENSE counter met the comparison criteria set in LESENSE_CHx_EVAL by COMPMODE and CNTTHRES.

Definition at line 1274 of file em_lesense.h .

References _LESENSE_SCANRES_SCANRES_MASK , and LESENSE .

void LESENSE_ScanStart ( void )

Start scanning of sensors.

Note
This function will wait for any pending previous write operation to the CMD register to complete before accessing the CMD register. It will also wait for the write operation to the CMD register to complete before returning. Each write operation to the CMD register may take up to 3 LF clock cycles, so the user should expect some delay. The user may implement a separate function to write multiple command bits in the CMD register in one single operation in order to optimize an application.

Definition at line 1108 of file em_lesense.c .

References LESENSE , LESENSE_CMD_START , and LESENSE_SYNCBUSY_CMD .

Referenced by CAPLESENSE_setupLESENSE() , and LESENSE_ScanModeSet() .

void LESENSE_ScanStop ( void )

Stop scanning of sensors.

Note
This function will wait for any pending previous write operation to the CMD register to complete before accessing the CMD register. It will also wait for the write operation to the CMD register to complete before returning. Each write operation to the CMD register may take up to 3 LF clock cycles, so the user should expect some delay. The user may implement a separate function to write multiple command bits in the CMD register in one single operation in order to optimize an application.
If issued during a scan, the command takes effect after scan completion.

Definition at line 1140 of file em_lesense.c .

References LESENSE , LESENSE_CMD_STOP , and LESENSE_SYNCBUSY_CMD .

Referenced by CAPLESENSE_setupLESENSE() .

__STATIC_INLINE uint32_t LESENSE_SensorStateGet ( void )

Get the current state of the LESENSE sensor.

Returns
This function returns the value of LESENSE_SENSORSTATE register that represents the current state of the LESENSE sensor.

Definition at line 1326 of file em_lesense.h .

References LESENSE .

void LESENSE_StartDelaySet ( uint8_t startDelay )

Set start delay of sensor interaction on each channel.

This function sets start delay of sensor interaction on each channel. It can be used for adjusting the start delay while running the application but it is also used by LESENSE_Init() for initialization.

Note
Users can configure the start delay by LESENSE_Init() function, but only with a significant overhead. This simple function serves the purpose of controlling this parameter after the channel has been configured. Please be aware the effects of the non-atomic Read-Modify-Write cycle!
Parameters
[in] startDelay Number of LFACLK cycles to delay. Valid range: 0-3 (2 bit).

Definition at line 366 of file em_lesense.c .

References _LESENSE_TIMCTRL_STARTDLY_MASK , _LESENSE_TIMCTRL_STARTDLY_SHIFT , and LESENSE .

Referenced by LESENSE_Init() .

__STATIC_INLINE uint32_t LESENSE_StatusGet ( void )

Get the current status of LESENSE.

Returns
This function returns the value of LESENSE_STATUS register that contains the OR combination of the following status bits:
  • LESENSE_STATUS_RESV - Result data valid. Set when data is available in the result buffer. Cleared when the buffer is empty.
  • LESENSE_STATUS_RESFULL - Result buffer full. Set when the result buffer is full.
  • LESENSE_STATUS_RUNNING - LESENSE is active.
  • LESENSE_STATUS_SCANACTIVE - LESENSE is currently interfacing sensors.

Definition at line 1219 of file em_lesense.h .

References LESENSE .

Referenced by CAPLESENSE_setupLESENSE() .

__STATIC_INLINE void LESENSE_StatusWait ( uint32_t flag )

Wait until the status of LESENSE is equal to what requested.

This function is polling the LESENSE_STATUS register and waits until the requested combination of flags are set.

Parameters
[in] flag The OR combination of the following status bits:
  • LESENSE_STATUS_BUFDATAV - Result data valid. Set when data is available in the result buffer. Cleared when the buffer is empty.
  • LESENSE_STATUS_BUFHALFFULL - Result buffer half full. Set when the result buffer is half full.
  • LESENSE_STATUS_BUFFULL - Result buffer full. Set when the result buffer is full.
  • LESENSE_STATUS_RUNNING - LESENSE is active.
  • LESENSE_STATUS_SCANACTIVE - LESENSE is currently interfacing sensors.
  • LESENSE_STATUS_DACACTIVE - The DAC interface is currently active.

Definition at line 1244 of file em_lesense.h .

References LESENSE .

void LESENSE_StepSizeSet ( uint32_t stepSize )

Set the step size for all LESENSE channels.

The step size is configured using the same register field as use to configure window size. So calling this function will overwrite any previously configured window size as done by the LESENSE_WindowSizeSet() function.

Parameters
[in] stepSize The step size to use for all channels.

Definition at line 953 of file em_lesense.c .

References LESENSE_WindowSizeSet() .

Referenced by LESENSE_ChannelStepDetection() .

void LESENSE_WindowSizeSet ( uint32_t windowSize )

Set the window size for all LESENSE channels.

The window size is used by all channels that are configured as lesenseEvalModeSlidingWindow .

Warning
The window size configuration is using the same register field as the step detection size. So the window size configuration will have an effect on channels configured with the lesenseEvalModeStepDetection evaluation mode as well.
Parameters
[in] windowSize The window size to use for all channels.

Definition at line 934 of file em_lesense.c .

References _LESENSE_EVALCTRL_WINSIZE_MASK , and LESENSE .

Referenced by LESENSE_ChannelSlidingWindow() , and LESENSE_StepSizeSet() .