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MSP430FR2633: Wake-on-Proximity and Wakeup Interval

Part Number: MSP430FR2633


Hi,
My customers made a capacitive sensor product with MSP430FR2633.
This product wakes up even though they are not touching.

Wake-on-Proximity occurs at the cycle timing of Wakeup Interval.
Would you tell me the solution?

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// Generated by Captivate Design Center v1_70_00_03 on Fri Jun 14 16:48:22 GMT+09:00 2019


//*****************************************************************************
// CAPT_UserConfig.c
//
// \version 1.70.00.03
// Released on July 30, 2018
//
//*****************************************************************************

//*****************************************************************************
//
// NOTE: This is an automatically generated source code file!  The Captivate
// Design Center generates the User Configuration file automatically based
// upon the sensor layout that was created.
//
// Changes to this file will be OVERWRITTEN if a you select
// "Update Existing Project" under "Generate Source Code" in the Design Center.
//
// To avoid interference with the code generation process, keep ALL application
// code external to this file.
//
//*****************************************************************************

#include "CAPT_UserConfig.h"

//*****************************************************************************
//
//! Captivate Element Definitions
//! All elements in this application are defined below.
//! Each element has 3 components:
//!  1) a raw count array (One index per freq. scanned) (uint16_t)
//!  2) a tuning array (One index per freq. scanned) (tCaptivateElementTuning)
//!  3) a element structure (tElement)
//
//*****************************************************************************
// Sensor: BTN00, Element: E00
uint16_t BTN00_E00_RawCnts[CAPT_MUTUAL_FREQ_CNT];
tCaptivateElementTuning BTN00_E00_Tuning[CAPT_MUTUAL_FREQ_CNT];
tElement BTN00_E00 =
{
    .ui8TxPin = 1,
    .ui8TxBlock = 0,
    .ui8RxPin = 0,
    .ui8RxBlock = 0,
    .ui8TouchThreshold = 8,
    .pRawCount = BTN00_E00_RawCnts,
    .pTuning = BTN00_E00_Tuning,
};

// Sensor: BTN00, Element: E01
uint16_t BTN00_E01_RawCnts[CAPT_MUTUAL_FREQ_CNT];
tCaptivateElementTuning BTN00_E01_Tuning[CAPT_MUTUAL_FREQ_CNT];
tElement BTN00_E01 =
{
    .ui8TxPin = 1,
    .ui8TxBlock = 0,
    .ui8RxPin = 0,
    .ui8RxBlock = 1,
    .ui8TouchThreshold = 8,
    .pRawCount = BTN00_E01_RawCnts,
    .pTuning = BTN00_E01_Tuning,
};

// Sensor: BTN00, Element: E02
uint16_t BTN00_E02_RawCnts[CAPT_MUTUAL_FREQ_CNT];
tCaptivateElementTuning BTN00_E02_Tuning[CAPT_MUTUAL_FREQ_CNT];
tElement BTN00_E02 =
{
    .ui8TxPin = 1,
    .ui8TxBlock = 0,
    .ui8RxPin = 0,
    .ui8RxBlock = 2,
    .ui8TouchThreshold = 8,
    .pRawCount = BTN00_E02_RawCnts,
    .pTuning = BTN00_E02_Tuning,
};

// Sensor: BTN00, Element: E03
uint16_t BTN00_E03_RawCnts[CAPT_MUTUAL_FREQ_CNT];
tCaptivateElementTuning BTN00_E03_Tuning[CAPT_MUTUAL_FREQ_CNT];
tElement BTN00_E03 =
{
    .ui8TxPin = 1,
    .ui8TxBlock = 0,
    .ui8RxPin = 0,
    .ui8RxBlock = 3,
    .ui8TouchThreshold = 8,
    .pRawCount = BTN00_E03_RawCnts,
    .pTuning = BTN00_E03_Tuning,
};

// Sensor: BTN00, Element: E04
uint16_t BTN00_E04_RawCnts[CAPT_MUTUAL_FREQ_CNT];
tCaptivateElementTuning BTN00_E04_Tuning[CAPT_MUTUAL_FREQ_CNT];
tElement BTN00_E04 =
{
    .ui8TxPin = 2,
    .ui8TxBlock = 0,
    .ui8RxPin = 0,
    .ui8RxBlock = 0,
    .ui8TouchThreshold = 8,
    .pRawCount = BTN00_E04_RawCnts,
    .pTuning = BTN00_E04_Tuning,
};

// Sensor: BTN00, Element: E05
uint16_t BTN00_E05_RawCnts[CAPT_MUTUAL_FREQ_CNT];
tCaptivateElementTuning BTN00_E05_Tuning[CAPT_MUTUAL_FREQ_CNT];
tElement BTN00_E05 =
{
    .ui8TxPin = 2,
    .ui8TxBlock = 0,
    .ui8RxPin = 0,
    .ui8RxBlock = 1,
    .ui8TouchThreshold = 8,
    .pRawCount = BTN00_E05_RawCnts,
    .pTuning = BTN00_E05_Tuning,
};

// Sensor: BTN00, Element: E06
uint16_t BTN00_E06_RawCnts[CAPT_MUTUAL_FREQ_CNT];
tCaptivateElementTuning BTN00_E06_Tuning[CAPT_MUTUAL_FREQ_CNT];
tElement BTN00_E06 =
{
    .ui8TxPin = 2,
    .ui8TxBlock = 0,
    .ui8RxPin = 0,
    .ui8RxBlock = 2,
    .ui8TouchThreshold = 8,
    .pRawCount = BTN00_E06_RawCnts,
    .pTuning = BTN00_E06_Tuning,
};

// Sensor: BTN00, Element: E07
uint16_t BTN00_E07_RawCnts[CAPT_MUTUAL_FREQ_CNT];
tCaptivateElementTuning BTN00_E07_Tuning[CAPT_MUTUAL_FREQ_CNT];
tElement BTN00_E07 =
{
    .ui8TxPin = 2,
    .ui8TxBlock = 0,
    .ui8RxPin = 0,
    .ui8RxBlock = 3,
    .ui8TouchThreshold = 8,
    .pRawCount = BTN00_E07_RawCnts,
    .pTuning = BTN00_E07_Tuning,
};

// Sensor: BTN00, Element: E08
uint16_t BTN00_E08_RawCnts[CAPT_MUTUAL_FREQ_CNT];
tCaptivateElementTuning BTN00_E08_Tuning[CAPT_MUTUAL_FREQ_CNT];
tElement BTN00_E08 =
{
    .ui8TxPin = 3,
    .ui8TxBlock = 0,
    .ui8RxPin = 0,
    .ui8RxBlock = 0,
    .ui8TouchThreshold = 8,
    .pRawCount = BTN00_E08_RawCnts,
    .pTuning = BTN00_E08_Tuning,
};

// Sensor: BTN00, Element: E09
uint16_t BTN00_E09_RawCnts[CAPT_MUTUAL_FREQ_CNT];
tCaptivateElementTuning BTN00_E09_Tuning[CAPT_MUTUAL_FREQ_CNT];
tElement BTN00_E09 =
{
    .ui8TxPin = 3,
    .ui8TxBlock = 0,
    .ui8RxPin = 0,
    .ui8RxBlock = 1,
    .ui8TouchThreshold = 8,
    .pRawCount = BTN00_E09_RawCnts,
    .pTuning = BTN00_E09_Tuning,
};

// Sensor: BTN00, Element: E10
uint16_t BTN00_E10_RawCnts[CAPT_MUTUAL_FREQ_CNT];
tCaptivateElementTuning BTN00_E10_Tuning[CAPT_MUTUAL_FREQ_CNT];
tElement BTN00_E10 =
{
    .ui8TxPin = 3,
    .ui8TxBlock = 0,
    .ui8RxPin = 0,
    .ui8RxBlock = 2,
    .ui8TouchThreshold = 8,
    .pRawCount = BTN00_E10_RawCnts,
    .pTuning = BTN00_E10_Tuning,
};

// Sensor: BTN00, Element: E11
uint16_t BTN00_E11_RawCnts[CAPT_MUTUAL_FREQ_CNT];
tCaptivateElementTuning BTN00_E11_Tuning[CAPT_MUTUAL_FREQ_CNT];
tElement BTN00_E11 =
{
    .ui8TxPin = 3,
    .ui8TxBlock = 0,
    .ui8RxPin = 0,
    .ui8RxBlock = 3,
    .ui8TouchThreshold = 8,
    .pRawCount = BTN00_E11_RawCnts,
    .pTuning = BTN00_E11_Tuning,
};

// Sensor: PRX00, Element: E00
uint16_t PRX00_E00_RawCnts[CAPT_SELF_FREQ_CNT];
tCaptivateElementTuning PRX00_E00_Tuning[CAPT_SELF_FREQ_CNT];
tElement PRX00_E00 =
{
    .ui8RxPin = 3,
    .ui8RxBlock = 3,
    .ui8TouchThreshold = 127,
    .pRawCount = PRX00_E00_RawCnts,
    .pTuning = PRX00_E00_Tuning,
};


//*****************************************************************************
//
//! Captivate Time Cycle Definitions
//! All time cycles in this application are defined below.  Time cycles are
//! groups of elements that are measured together in parallel in one time slot.
//! Each cycle has 2 components:
//!  1) an element pointer array to the member elements (tElement*)
//!  2) a cycle structure (tCycle)
//
//*****************************************************************************
// Time Cycle: BTN00_C00
tElement* BTN00_C00_Elements[4] =
{
    &BTN00_E00,
    &BTN00_E01,
    &BTN00_E02,
    &BTN00_E03,
};
tCycle BTN00_C00 =
{
    .ui8NrOfElements = 4,
    .pElements = BTN00_C00_Elements,
};

// Time Cycle: BTN00_C01
tElement* BTN00_C01_Elements[4] =
{
    &BTN00_E04,
    &BTN00_E05,
    &BTN00_E06,
    &BTN00_E07,
};
tCycle BTN00_C01 =
{
    .ui8NrOfElements = 4,
    .pElements = BTN00_C01_Elements,
};

// Time Cycle: BTN00_C02
tElement* BTN00_C02_Elements[4] =
{
    &BTN00_E08,
    &BTN00_E09,
    &BTN00_E10,
    &BTN00_E11,
};
tCycle BTN00_C02 =
{
    .ui8NrOfElements = 4,
    .pElements = BTN00_C02_Elements,
};

// Time Cycle: PRX00_C00
tElement* PRX00_C00_Elements[1] =
{
    &PRX00_E00,
};
tCycle PRX00_C00 =
{
    .ui8NrOfElements = 1,
    .pElements = PRX00_C00_Elements,
};


//*****************************************************************************
//
//! Captivate Sensor Definitions
//! All sensors in this application are defined below.  Sensors are
//! groups of time cycles that utilize raw measurement data to create an
//! abstract sensor type, such as a button, slider, wheel, or prox sensor.
//! Each sensor has 3 components:
//!  1) a cycle pointer array to the member time cycles (tCycle*)
//!  2) a sensor-specific parameter structure (tGenericSensorParams)
//!  3) a sensor structure (tSensor)
//
//*****************************************************************************
//Sensor: BTN00
const tCycle* BTN00_Cycles[3] =
{
    &BTN00_C00,
    &BTN00_C01,
    &BTN00_C02,
};

tButtonSensorParams BTN00_Params;
tSensor BTN00 =
{
    // Basic Properties
    .TypeOfSensor = eButtonGroup,
    .SensingMethod = eProjected,
    .DirectionOfInterest = eDOIUp,
    .pvCallback = NULL,
    .ui8NrOfCycles = 3,
    .pCycle = BTN00_Cycles,
    .pSensorParams = (tGenericSensorParams*)&BTN00_Params,
    // Conversion Control Parameters
    .ui16ConversionCount = 400,
    .ui16ConversionGain = 100,
    .ui8FreqDiv = 2,
    .ui8ChargeLength = 1,
    .ui8TransferLength = 1,
    .bModEnable = false,
    .ui8BiasControl = 3,
    .bCsDischarge = true,
    .bLpmControl = false,
    .ui8InputSyncControl = 0,
    .bTimerSyncControl = false,
    .bIdleState = true,
    // Tuning  Parameters
    .ui16ProxThreshold = 10,
    .ui16NegativeTouchThreshold = 200,
    .ui16ErrorThreshold = 8000,
    .ui16TimeoutThreshold = 1980,
    .ProxDbThreshold.DbIn = 1,
    .ProxDbThreshold.DbOut = 1,
    .TouchDbThreshold.DbIn = 1,
    .TouchDbThreshold.DbOut = 0,
    .bCountFilterEnable = true,
    .ui8CntBeta = 1,
    .bSensorHalt = false,
    .bPTSensorHalt = true,
    .bPTElementHalt = true,
    .ui8LTABeta = 7,
    .bReCalibrateEnable = true,
};

//Sensor: PRX00
const tCycle* PRX00_Cycles[1] =
{
    &PRX00_C00,
};

tProxSensorParams PRX00_Params =
{
    .pSensor = NULL,
    .ui8NumberOfSensors = 0,
};

tSensor PRX00 =
{
    // Basic Properties
    .TypeOfSensor = eProx,
    .SensingMethod = eSelf,
    .DirectionOfInterest = eDOIDown,
    .pvCallback = NULL,
    .ui8NrOfCycles = 1,
    .pCycle = PRX00_Cycles,
    .pSensorParams = (tGenericSensorParams*)&PRX00_Params,
    // Conversion Control Parameters
	.ui16ConversionCount = 800,
	.ui16ConversionGain = 100,
    .ui8FreqDiv = 2,
    .ui8ChargeLength = 0,
    .ui8TransferLength = 0,
    .bModEnable = true,
    .ui8BiasControl = 3,
    .bCsDischarge = true,
    .bLpmControl = false,
    .ui8InputSyncControl = 0,
    .bTimerSyncControl = false,
    .bIdleState = true,
    // Tuning  Parameters
    .ui16ProxThreshold = 8,
    .ui16NegativeTouchThreshold = 200,
    .ui16ErrorThreshold = 8191,
    .ui16TimeoutThreshold = 620,			// �Q�O�b�ݒ�
    .ProxDbThreshold.DbIn = 1,
    .ProxDbThreshold.DbOut = 1,
    .TouchDbThreshold.DbIn = 1,
    .TouchDbThreshold.DbOut = 10,
    .bCountFilterEnable = true,
    .ui8CntBeta = 2,
    .bSensorHalt = false,
    .bPTSensorHalt = true,
    .bPTElementHalt = true,
    .ui8LTABeta = 6,
    .bReCalibrateEnable = true,
};


#if (CAPT_CONDUCTED_NOISE_IMMUNITY_ENABLE==true)
//*****************************************************************************
//
//! \var g_EMCConfig
//! This structure stores the EMC configuration for this application.
//
//*****************************************************************************
const tEMCConfig g_EMCConfig =
{
	// Conversion Style
	.selfModeConversionStyle = eMultiFrequency,
	.projModeConversionStyle = eMultiFrequencyWithOutlierRemoval,
	
	// Oversampling Style
	.selfModeOversamplingStyle = eNoOversampling,
	.projModeOversamplingStyle = eNoOversampling,
	
	// Jitter Filter Enable
	.bJitterFilterEnable = true,
	
	// Noise Thresholds and Calibration Noise Limits
	.ui8NoiseThreshold = 20,
	.ui16CalibrationNoiseLimit = 10,
	.ui8CalibrationTestSampleSize = 8,
		
	// Dynamic Threshold Adjustment Parameters
	.bEnableDynamicThresholdAdjustment = true,
	.ui8MaxRelThreshAdj = 76,
	.ui8NoiseLevelFilterEntryThresh = 40,
	.ui8NoiseLevelFilterExitThresh = 0,
	.ui8NoiseLevelFilterDown = 6,
	.ui8NoiseLevelFilterUp = 1,
	.coeffA = _IQ31(0.0065),
	.coeffB = _IQ31(0.050)
};
#endif

//*****************************************************************************
//
//! \var g_pCaptivateSensorArray
//! This array allows for indexed access to any
//! sensor in the configuration.
//
//*****************************************************************************
tSensor* g_pCaptivateSensorArray[CAPT_SENSOR_COUNT] =
{
    &BTN00,
    &PRX00,
};


//*****************************************************************************
//
//! \var g_uiApp
//! This structure stores the global settings for this application.
//
//*****************************************************************************
tCaptivateApplication g_uiApp =
{
    .state = eUIActive,
	.pSensorList = &g_pCaptivateSensorArray[0],
    .ui8NrOfSensors = CAPT_SENSOR_COUNT,
    .ui8AppLPM = CAPT_LOW_POWER_MODE,
    .bElementDataTxEnable = true,
    .bSensorDataTxEnable = true,
    .ui16ActiveModeScanPeriod = 32,
    .ui16WakeOnProxModeScanPeriod = 100,
    .ui16InactivityTimeout = 31,
    .ui8WakeupInterval = 8,
};


Regards,
Rei

  • Hallo Rei,

    thanks for reaching out to the forum.

    Do you have any additional information on the design? This will help us better understand the design.

    There may be several parameters that can influence the Wake-up of the system depending on the settings, the layout, noise or geometry of the sensor.

    Additional information on the above parameters will help.

    Depending on the expected detection distance, the sensitivity (Conversion Count) and the detection threshold could be the parameters to try to adjust first.

    I see that you have a CC=800 and the Wake on Prox Th=8, e.g. decreasing the CC and increasing threshold should help to reduce the issue, but it will  influence the detection range too.

    If the issue is caused by noise, the customer may consider to enable the noise immunity feature.

    Some additional information on this topic can be found in the Technology Guide:

    Please let me know if you have additional information.

    Thanks

    Regards

    Kostas

  • Hallo Rei,

    any update from your side.

    Could you solve your issues?

    Thanks

    Regards

    Kostas

  • Hi Rei,

    I haven’t heard from you for a couple of days now, so I’m assuming you were able to resolve your issue.

    I will close the thread now, but if you have further question, please feel free to contact the forum. We are happy to support.

    If my post helped solve your issue, please click on the  This resolved my issue    button.

     

    Thanks

    Best regards

    Kostas

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