MSP430FR6047: Why is the USS lib constantly moving dTOF numbers backwards by one sample period for the same exact waveform?

Harvey Chapman

Prodigy 80 points

Part Number: MSP430FR6047

Tool/software:

Setup:

- I capture a sample pair of waveforms from a working meter at zero flow. There are no errors.

Run:

- I initialize a meter with the same parameters from the capture

- I repeatedly feed the same captured waveform over and over again to the algorithm.

Result:

- The dTOF numbers move backwards by one 8MHz sample period (125ns) on each successive analysis until they eventually reset and loop back to the initial starting value.

Waveforms:

const int16_t signals[][2][320] = {
                                   {
                                    {17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,-43,-35,124,127,-168,-195,242,303,-248,-331,309,391,-328,-396,399,423,-463,-435,552,494,-561,-476,628,539,-581,-480,655,548,-585,-455,684,536,-610,-454,708,571,-596,-491,657,574,-547,-492,524,470,-434,-377,389,305,-367,-281,318,252,-271,-231,224,239,-119,-190,67,181,10,-121,3,149,44,-124,-36,143,58,-150,-74,162,104,-144,-107,124,91,-114,-77,107,73,-89,-57,90,61,-73,-46,85,80,-33,-46,43,61,-20,-48,22,58,-6,-42,15,50,-9,-49,5,52,10,-31,5,44,12,-25,-3,28,10,-13,1,24,13,-10,-3,20,16,1,7,26,24,1,-3,11,14,4,4,14,14,3,-1,0,-1,-3,3,5,1,-2,-1,-1,-3,-1,5,6,7,11,16,17,12,10,15,19,16,12,15,20,15,4,2,5,1,-2,1,8,2,-7,-9,-4,-3,-4,-4,5,8,3,-1,1,8,11,12,14,19,17,12,13,17,16,10,8,15,14,10,4,3,5,2,-3,-3,1,1,-2,-1,2,-1,-5,-3,3,7,4,5,9,9,9,8,11,14,14,11,12,12,9,6,8,11,10,6,5,4,4,0,0,0,1,2,1,0,2,3,4,4,8,11,11,12,13,16,16,15,14,15,14,12,8,10,7,3,1,1,1,-2,-4,-3,-2,-3,-3,-1,2,3,2,5,7,7,6,9,11,10,13,12,12,12,9,7,7,7,7,5,4,5,5,7,7,6,10},
                                    {17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,-42,-36,123,127,-167,-194,241,302,-248,-329,308,391,-327,-396,398,422,-463,-434,552,493,-560,-476,627,538,-581,-479,653,547,-585,-455,683,534,-611,-454,708,568,-596,-492,656,573,-547,-492,524,470,-434,-377,389,304,-367,-279,317,250,-269,-229,223,239,-118,-189,67,181,10,-120,3,149,43,-123,-35,143,58,-149,-73,162,104,-143,-106,124,90,-114,-76,107,74,-88,-56,90,61,-73,-46,85,80,-32,-46,43,62,-20,-48,23,57,-5,-42,15,49,-7,-48,6,52,10,-31,5,44,12,-25,-2,28,11,-13,1,24,12,-12,-4,18,18,0,7,26,23,2,-6,9,13,2,1,12,13,1,-2,0,-2,-3,2,4,0,-2,-1,-1,-4,-2,3,7,6,11,18,16,13,10,17,20,16,12,16,20,13,5,2,4,2,-2,2,7,3,-7,-9,-4,-3,-5,-3,3,7,3,-2,1,7,11,12,15,19,17,13,12,19,16,10,9,12,14,10,4,4,5,2,-3,-3,3,2,-2,0,2,-1,-5,-2,3,8,6,6,11,11,8,9,12,17,13,11,12,13,11,8,9,11,11,6,5,5,4,1,0,0,2,3,2,-1,4,3,5,4,8,9,10,10,12,15,14,13,13,15,13,11,8,8,5,2,1,1,0,-2,-3,-3,-1,-4,-3,-1,1,3,3,5,9,9,8,11,10,12,13,12,13,11,10,7,7,8,8,6,6,5,7,5,6,7,7},
                                   },
};

My meter's output. Notice the UPS and DNS TOF numbers (to the far right in the output below) moving backwards by 125ns each measurement for the SAME exact signal. My meter eventually notices and flags that the numbers are wrong for the physics of the given meter and the current temperature. That's what the "to fail" and "to pass" event transition markers are announcing.

1 month ago

0 Cash Hao11 1 month ago

TI__Mastermind 35605 points

Hi,

Could you share the userConfig.h file here? What is the dTOF_Center means here while the Delta is always 0.0?

It seems that you are using a 2MHz transducer under 8MHz ADC sampling rate. First thought is that, the current measurement will use some data from the last measurement to save data processing time. This issue could be related to it. So, I would suggest to use a lower ADC sampling frequency like 7.2M and a higher threshold value to avoid this kind of issue.

Best regards,

Cash Hao

0 Harvey Chapman 1 month ago in reply to Cash Hao11

Prodigy 80 points

Cash Hao11 said:
What is the dTOF_Center means here while the Delta is always 0.0?

float dTOF_Center = algResults->totalTOF_DNS + (algResults->deltaTOF / 2);
float AbsTof_Center = algResults->totalTOF_DNS + ((algResults->totalTOF_UPS - algResults->totalTOF_DNS) / 2);

Cash Hao11 said:
It seems that you are using a 2MHz transducer under 8MHz ADC sampling rate. First thought is that, the current measurement will use some data from the last measurement to save data processing time. This issue could be related to it. So, I would suggest to use a lower ADC sampling frequency like 7.2M and a higher threshold value to avoid this kind of issue.

Can you elaborate on this?

What effect does lowering the frequency have here?

Why would a higher threshold matter?

I'm failing to understand how inputting the same exact waveform over and over again can produce different results.

void uss_capture_and_process(USS_Algorithms_Results *algResults) {
    assert(algResults);

    USS_SW_Library_configuration *ussSWConfig = &gUssSWConfig;
    int16_t *upsCapture = USS_getUPSPtr(ussSWConfig);
    int16_t *dnsCapture = USS_getDNSPtr(ussSWConfig);
    uint16_t samples = ussSWConfig->captureConfig->sampleSize;

    memcpy(upsCapture, upsPreset, samples);
    memcpy(dnsCapture, dnsPreset, samples);

    memset(algResults, 0, sizeof(*algResults));
    USS_message_code code = USS_runAlgorithms(&gUssSWConfig, algResults);
    checkCode(code, USS_message_code_valid_results);
}

0 Harvey Chapman 1 month ago in reply to Harvey Chapman

Prodigy 80 points

USS_userConfig.c

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//#############################################################################
//
//! \file   USS_userConfig.c
//!
//! \brief  This file contains USS SW Library configuration
//!
//
//  Group:          MSP
//  Target Device:  MSP430FR6047
//
//  (C) Copyright 2019, Texas Instruments, Inc.
//#############################################################################
// TI Release: USSLib_02_40_00_00
// Release Date: February 22, 2020
//#############################################################################
#include "USS_userConfig.h"
#if (USS_ENABLE_ABSTOF_LOBE_OFFSET_CORRECTION == true)
#include <USS_Config/USS_intrplCorrLUT.h>
#endif
#if (USS_ALG_VFR_CALIB_MODE==USS_ALG_VFR_CALIB_OPTION_FLOW)
#include <USS_Config/USS_meterVFRCalibFlow.h>
#endif
#if (USS_ALG_VFR_CALIB_MODE==USS_ALG_VFR_CALIB_OPTION_FLOW_TEMPERATURE)
#include <USS_Config/USS_meterVFRCalibFlowTemperature.h>
#endif
#if(USS_ALG_ENABLE_ESTIMATE_TEMPERATURE == true)
#include <USS_Config/USS_temperatureLUT.h>
#endif

#if defined(__TI_COMPILER_VERSION__)
#if (USS_ALG_FILT_IS_FILTER_ENABLED == true)
#endif
#if defined(USS_ALG_FILT_IS_FILTER_ENABLED)
#endif
#if (USS_PULSE_MODE != USS_PULSE_MODE_SINGLE_TONE)
#if (USS_NUM_OF_ADDTL_TRILL_PULSES > 0)
#endif
#endif

#if (USS_ALG_VFR_CALIB_MODE==USS_ALG_VFR_CALIB_OPTION_FLOW)
#elif (USS_ALG_VFR_CALIB_MODE==USS_ALG_VFR_CALIB_OPTION_FLOW_TEMPERATURE)
#endif
#if(USS_ALG_ENABLE_ESTIMATE_TEMPERATURE == true)
#endif
#define __persistent
#define __no_init
#elif defined (__IAR_SYSTEMS_ICC__)
#else
#error Compiler not supported!
#endif


#if (USS_ALG_VFR_CALIB_MODE==USS_ALG_VFR_CALIB_OPTION_FLOW)
__persistent USS_Algorithms_Flow_Meter_Constant
       ussAlgorithmMeterConstCalib[USS_METER_VFR_CALIB_FLOW_RANGES] =
               USS_METER_VFR_CALIB_FLOW_DATA;
__persistent USS_Alg_volume_Flow_Calib_Object
        ussAlgorithmVolumeFlowObj =
        {
         .numOfRanges = USS_METER_VFR_CALIB_FLOW_RANGES,
         .pMeterConfiguration = &ussAlgorithmMeterConstCalib[0],
        };
#elif (USS_ALG_VFR_CALIB_MODE==USS_ALG_VFR_CALIB_OPTION_FLOW_TEMPERATURE)
__persistent USS_Algorithms_Quad_Point
       ussAlgorithmQuadPoints[USS_METER_VFR_CALIB_FLOW_TEMPERATURE_POINT_LENGTH] =
               USS_METER_VFR_CALIB_FLOW_TEMPERATURE_QUAD_POINTS;
__persistent USS_Algorithms_Quad_Meter_Constant
       ussAlgorithmQuadMeterConstant[USS_METER_VFR_CALIB_FLOW_TEMPERATURE_MC_LENGTH] =
               USS_METER_VFR_CALIB_FLOW_TEMPERATURE_METER_CONSTANTS;

__persistent USS_Alg_volume_Flow_Temperature_Calib_Object
        ussAlgorithmVolumeFlowTemperatureObj =
        {
         .numOfFlows = USS_METER_VFR_CALIB_FLOW_TEMPERATURE_NUM_FLOW,
         .numOfTemps = USS_METER_VFR_CALIB_FLOW_TEMPERATURE_NUM_TEMP,
         .pQuadPoints = &ussAlgorithmQuadPoints[0],
         .pQuadMeterConstants = &ussAlgorithmQuadMeterConstant[0],
        };
#endif

#if(USS_ALG_ENABLE_ESTIMATE_TEMPERATURE == true)

const int32_t ussTempCalc[USS_TEMPERATURE_LUT_LENGTH][3]=
        USS_TEMPERATURE_LUT_VALUES;

__persistent USS_Alg_temperature_Calculation_Object
       ussAlgorithmTemperatureCalcObj =
       {
        .tempLUTLength = USS_TEMPERATURE_LUT_LENGTH,
        .pTempLUT = &ussTempCalc[0],
        .iq24transducerConstant = _IQ24(USS_TEMPERATURE_LUT_TRANSDUCER_CONST),
       };
#endif




#if (USS_ENABLE_ABSTOF_LOBE_OFFSET_CORRECTION == true)
const int16_t gUSSAbsToFLUT[USS_INTRPL_CORR_LUT_RES][2]=
        USS_INTRPL_CORR_LUT_VALUES;
#endif


// LEA and FRAM memory buffers
USS_HAL_LEA_DATA(gUSSLEATempMemBlock, 4)
__no_init int16_t gUSSLEATempMemBlock[2 * (USS_SW_LIB_APP_MAX_CAPTURE_SIZE +
                            USS_SW_LIB_APP_MAX_FILTER_LENGTH)];

#if(USS_ALG_DTOF_WINDOWING_MODE != USS_ALG_DTOF_EST_WINDOW_OPTION_DISABLED)
USS_HAL_LEA_DATA(gUSSLEARAMReservedBlock1, 4)
__no_init int16_t gUSSLEARAMReservedBlock1[USS_SW_LIB_APP_MAX_WINDOW_RAMP_SIZE];
#endif

USS_HAL_LEA_DATA(gUSSLEARAMReservedBlock2, 4)
__no_init int16_t gUSSLEARAMReservedBlock2[USS_SW_LIB_APP_MAX_CAPTURE_SIZE +
                                           USS_SW_LIB_APP_MAX_HILBERT_FILTER_LENGTH];

__persistent int32_t gNVMemBlock[(USS_SW_LIB_APP_MAX_CAPTURE_SIZE * 2)]={0};


USS_HAL_LEA_DATA(gUSSBinaryPattern, 4)
__no_init int16_t gUSSBinaryPattern[USS_BINARY_ARRAY_MAX_SIZE];

#if USS_SW_LIB_APP_MAX_ACC_BLOCK
USS_HAL_LEA_DATA(gUSSLEARAMReservedAccMemBlock,4)
int16_t gUSSLEARAMReservedAccMemBlock[USS_SW_LIB_APP_MAX_ACC_BLOCK];
#endif

#if defined(USS_ALG_FILT_IS_FILTER_ENABLED)
// Filter Hilbert and Band Pass Coefficients
__persistent int16_t gUSSHilbertCoeffs[
    USS_SW_LIB_APP_MAX_HILBERT_FILTER_OPTIONS][
    USS_SW_LIB_APP_MAX_HILBERT_FILTER_LENGTH] =
    USS_SW_LIB_APP_HILB_FILTER_COEFFICIENTS;
#endif

#if (USS_ALG_FILT_IS_FILTER_ENABLED == true)
__persistent int16_t gUSSFilterCoeffs[USS_SW_LIB_APP_MAX_FILTER_OPTIONS][
    USS_SW_LIB_APP_MAX_FILTER_LENGTH] =
    USS_SW_LIB_APP_FILTER_COEFFICIENTS;
#endif

#if defined(__MSP430_HAS_SAPH_A__) && (USS_PULSE_MODE == USS_PULSE_MODE_MULTI_TONE)
USS_TONE_CONFIG_DATA(RAM_XE)
__no_init uint16_t RAM_XE[(USS_NUM_OF_MAX_TRILL_PULSES +
                 USS_NUM_OF_MAX_ADDTL_TRILL_PULSES) * 6];
USS_TONE_CONFIG_DATA(RAM_DMA_CONFIG)
__no_init uint16_t RAM_DMA_CONFIG[(USS_NUM_OF_MAX_TRILL_PULSES +
                         USS_NUM_OF_MAX_ADDTL_TRILL_PULSES) * 18];

__persistent uint16_t epulse[USS_NUM_OF_MAX_TRILL_PULSES] = {0};
__persistent uint16_t hper  [USS_NUM_OF_MAX_TRILL_PULSES] = {0};
__persistent uint16_t lper  [USS_NUM_OF_MAX_TRILL_PULSES] = {0};
__persistent uint16_t xpulse[USS_NUM_OF_MAX_TRILL_PULSES] = {0};
__persistent uint16_t xhper [USS_NUM_OF_MAX_TRILL_PULSES] = {0};
__persistent uint16_t xlper [USS_NUM_OF_MAX_TRILL_PULSES] = {0};

#if (USS_NUM_OF_ADDTL_TRILL_PULSES > 0)
__persistent uint16_t xtraepulse[USS_NUM_OF_ADDTL_TRILL_PULSES] = {0};
__persistent uint16_t xtraxpulse[USS_NUM_OF_ADDTL_TRILL_PULSES] = {0};
__persistent uint16_t xtraxhper [USS_NUM_OF_ADDTL_TRILL_PULSES] = {0};
__persistent uint16_t xtraxlper [USS_NUM_OF_ADDTL_TRILL_PULSES] = {0};
__persistent uint16_t xtrahper  [USS_NUM_OF_ADDTL_TRILL_PULSES] = {0};
__persistent uint16_t xtralper  [USS_NUM_OF_ADDTL_TRILL_PULSES] = {0};
__persistent int16_t additionalBinarySequence[USS_ADDTL_BIN_PATTERN_SIZE] = {0};
#endif
#endif

__persistent USS_System_Configuration ussSystemConfig = {
    .LFXTFrequency = USS_LFXT_FREQ_IN_HZ,
    .mCLKFrequency = USS_MCLK_FREQ_IN_HZ,
    .timerBaseAddress = USSSWLIB_TIMER_BASE_ADDRESS,
    .measurementPeriod = USS_SYS_MEASUREMENT_PERIOD,
    .diagMode = USS_DIAGNOSTIC_MODE,
};

__persistent USS_Meter_Configuration ussMeterConfig = {
    .acousticLength = USS_ACOUSTIC_LENGTH,
#if(USS_PULSE_MODE == USS_PULSE_MODE_SINGLE_TONE)
    .transducerFreq = USS_F1_FREQ,
#else
    .transducerFreq = ((USS_F1_FREQ + USS_F2_FREQ) / 2),
#endif
    .volumeScaleFactor = USS_VOLUME_SCALE_FACTOR,
    .volumeAddlScaleFactor = USS_VFR_LARGE_PIPE_ADDL_SF
};

#if defined(__MSP430_HAS_SAPH_A__) && (USS_PULSE_MODE == USS_PULSE_MODE_MULTI_TONE)
__persistent USS_Pulse_Additional_End_of_Sequence_Configuration ussEndOfSeq =
{
    .numOfTrillcycles = USS_NUM_OF_ADDTL_TRILL_PULSES,
#if (USS_NUM_OF_ADDTL_TRILL_PULSES > 0)
    .pNumOfEPulsArray = &xtraepulse[0],
    .pNumOfXPulsArray = &xtraxpulse[0],
    .pEPulsHPerArray = &xtrahper[0],
    .pEPulsLPerArray = &xtralper[0],
    .pXPulsHPerArray = &xtraxhper[0],
    .pXPulsLPerArray = &xtraxlper[0],
#endif
};

__persistent USS_Pulse_Multitone_Configuration multiToneConfig =
{
#if (USS_PULSE_MODE == USS_PULSE_MODE_MULTI_TONE)
    .origNumOfThrillCycles = USS_NUM_OF_TRILL_PULSES,
#endif
    .pNumOfEPulsArray = &epulse[0],
    .pNumOfXPulsArray = &xpulse[0],
    .pEPulsHPerArray = &hper[0],
    .pEPulsLPerArray = &lper[0],
    .pXPulsHPerArray = &xhper[0],
    .pXPulsLPerArray = &xlper[0],
    .pRAMPulseConfigArray = &RAM_XE[0],
    .pRAMDMAConfigArray = &RAM_DMA_CONFIG[0],
    .pEOFSeqConfig = &ussEndOfSeq,
};
#endif

__persistent USS_Pulse_Single_Dual_Tone_Configuration singDualToneConfig = {

#if ((USS_PULSE_MODE == USS_PULSE_MODE_SINGLE_TONE) ||    \
     (USS_PULSE_MODE == USS_PULSE_MODE_DUAL_TONE))
    .numOfF1Cycles = USS_NUM_OF_EXCITATION_PULSES_F1,
    .F1DutyCycle = (float) USS_PULSE_DUTYPERCENT_F1,
#if (USS_PULSE_MODE != USS_PULSE_MODE_SINGLE_TONE)
    .numOfF2Cycles = USS_NUM_OF_EXCITATION_PULSES_F2,
    .F2DutyCycle = (float) USS_PULSE_DUTYPERCENT_F2,
#else
    .numOfF2Cycles = 0,
    .F2DutyCycle   = 0,
#endif
#else
    .numOfF1Cycles = 0,
    .F1DutyCycle   = 0,
    .numOfF2Cycles = 0,
    .F2DutyCycle   = 0,
#endif

};

__persistent USS_Pulse_Configuration ussPulseConfig = {
    .pauseState = USS_PAUSE_STATE,
    .pulsePolarity = USS_PULSE_POLARITY,
    .F1Frequency = USS_F1_FREQ,
#ifdef USS_NUM_OF_STOP_PULSES
    .numOfStopPulses = USS_NUM_OF_STOP_PULSES,
#else
    .numOfStopPulses = 0,
#endif
#if (USS_PULSE_MODE != USS_PULSE_MODE_SINGLE_TONE)
    .F2Frequency = USS_F2_FREQ,
#endif


#if (USS_PULSE_MODE == USS_PULSE_MODE_SINGLE_TONE)
    .pulseGenMode = USS_measurement_pulse_generation_mode_single_tone,
    .pToneConfig = &singDualToneConfig,
#elif (USS_PULSE_MODE == USS_PULSE_MODE_DUAL_TONE)
    .pulseGenMode = USS_measurement_pulse_generation_mode_dual_tone,
    .pToneConfig = &singDualToneConfig,
#elif (USS_PULSE_MODE == USS_PULSE_MODE_MULTI_TONE)
    .pulseGenMode = USS_measurement_pulse_generation_mode_multi_tone,
    .pToneConfig = &multiToneConfig,
#endif
};

__persistent USS_Measurement_Configuration ussMeasurementConfig = {
    .ch0DriveStrength = USS_CH0_DRIVE_STRENGHT,
    .ch1DriveStrength = USS_CH1_DRIVE_STRENGHT,
    .sequenceSelection = USS_SEQUENCE_SELECTION,
    .eofSequenceState = USS_EOF_SEQUENCE_SELECTION,
    .pulseConfig = &ussPulseConfig,
    .startPPGCount = USS_START_PPG_COUNT,
    .turnOnADCCount = (uint_least16_t) USS_TURN_ON_ADC_COUNT,
    .startPGAandINBiasCount = USS_PGA_IN_BIAS_COUNT,
    .startADCsamplingCount = (uint16_t)USS_ADC_SAMP_COUNT,
    .restartCaptureCount = (uint_least16_t) USS_RESTART_CAP_COUNT,
    .captureTimeOutCount = USS_TIME_OUT_COUNT,
    .ulpBiasDelay = USS_ULP_BIAS_DELAY,
    .biasImpedance = USS_BIAS_IMPEDANCE,
    .muxChargePumpMode = USS_MUX_CHARGE_PUMP_MODE,
    .restartLowPowerCaptureCount =
        (uint_least16_t) USS_LOW_POWER_RESTART_CAP_COUNT,
#if (USSSWLIB_ENABLE_EXTERNAL_CIRCUITRY_CONTROL == true)
    .startRxEnCount = USS_MEASUREMENT_TURN_ON_EXTERNAL_AMP_COUNT,
#endif
};

__persistent USS_HSPLL_Configuration ussPLLConfig = {
    .ussXtalFreq = USS_PLL_XTAL_IN_MHZ,
    .pllOutputFreq = USS_HSPLL_FREQ,
    .outputPLLXtal = USS_OUTPUT_PLL_XTAL,
    .HSPLLInputCLKType = USS_HSPLL_INPUT_CLK_TYPE,
    .hspllTolerance = (uint16_t) USS_HSPLL_TOLERANCE,
    .ussXTALsettlingCount = USS_HSPLL_USSXTAL_SETTLING_COUNT,
};

__persistent USS_Interrupt_Configuration ussInterruptConfig = {
    .enableUUPSPREQIGInterrupt = USS_ENABLE_UUPSPREQIGINTERRUPT,
    .enableSAPHPingTransmitDoneInterrupt = USS_ENABLE_SAPH_PING_TRANSMIT
};

__persistent USS_Capture_Configuration ussCaptureConfig = {
    .overSampleRate = USS_OVER_SAMPLE_RATE,
    .sampleSize = USS_USER_CONFIG_NUMBER_OF_SAMPLES_PER_CAPTURE,
    .gainRange = USS_GAIN_RANGE,
    .enableWindowHiComp = USS_ENABLE_WINDOW_HI_COMP,
    .enableWindowLoComp = USS_ENABLE_WINDOW_LO_COMP,
    .windowHighThreshold = USS_WINDOW_HIGH_THRESHOLD,
    .windowLowThreshold = USS_WINDOW_LOW_THRESHOLD,
    .agcConstant = USS_AGC_CONSTANT,
    .pCapturesBuffer = &gUSSLEATempMemBlock[0],
    .maxCapture = (sizeof(gUSSLEATempMemBlock) / sizeof(int16_t)),
    .isCapAccumulationEnabled = USS_SW_LIB_ENABLE_ACCUMULATION,
#if USS_SW_LIB_APP_MAX_ACC_BLOCK
    .pAccCaptureBuffer = &gUSSLEARAMReservedAccMemBlock[0],
#endif
};

__persistent USS_Trigger_Configuration ussTriggerConfig = {
    .triggerConfig = USS_TRIGGER_CONFIG
};

__persistent USS_Algorithms_User_Configuration ussAlgConfig = {
    .absToFOption              = USS_ALG_ABS_TOF_COMPUTATION,
    .dtoFCalcOption            = (USS_Alg_dToF_Calculation_Option)USS_ALG_DELTA_TOF_COMPUTATION_OPTION,
    .volumeCalOption           = USS_ALG_VOLUME_RATE_COMPUTATION_OPTION,
    .clockRelativeError        = USS_ALG_CLOCK_RELATIVERROR,
    .absTOFInterval            = USS_ALG_ABS_TOF_INTERVAL,
    .dtofVolInterval           = USS_ALG_DTOF_INTERVAL,
    .calibratedDCOffsetUPS     = USS_ALG_CALIBRATED_UPS_DC_OFFSET,
    .calibratedDCOffsetDNS     = USS_ALG_CALIBRATED_DNS_DC_OFFSET,
    .ADCAdditionalCaptureDelay = USS_ALG_ADC_ADDITIONAL_CAP_DLY,
    .dcOffset                  = USS_ALG_DCOFFSET,
    .windowingMode             = USS_ALG_DTOF_WINDOWING_MODE,
#if(USS_ALG_DTOF_WINDOWING_MODE != USS_ALG_DTOF_EST_WINDOW_OPTION_DISABLED)
    .winStartIndexBackOffNumCycles = USS_ALG_WIN_START_INDEX_BACK_OFF_NUM_CYCLES,
    .winTrapzRampOverNumCycles     = USS_ALG_WIN_TRAP_RAMP_NUM_CYCLES,
    .winNumCycles                  = USS_ALG_WIN_NUM_CYCLES,
    .winPeakIndex2EdgeNumCycles    = USS_ALG_WIN_PEAK_INDEX_2_EDGES_NUM_CYLES,
#endif
    .enableFilter = USS_ALG_FILT_IS_FILTER_ENABLED,
#if(USS_ALG_FILT_IS_FILTER_ENABLED == true)
    .filterCoeffs = &gUSSFilterCoeffs[USS_ALG_FILT_OPTION][0],
    .filterLength = (sizeof(gUSSFilterCoeffs[USS_ALG_FILT_OPTION])
                     / sizeof(int16_t)),
#endif


#if defined(USS_ALG_SEARCH_LOBE_SAMP)
     .searchLobeSampleSteps = USS_ALG_SEARCH_LOBE_SAMP,
#else
     .searchLobeSampleSteps = 1,
#endif


#if defined(USS_ALG_NUM_PULS_BEFORE_THRSH)
     .numPulsesBeforeThreshold = USS_ALG_NUM_PULS_BEFORE_THRSH,
#else
     .numPulsesBeforeThreshold = 1,
#endif

#if defined(USS_ALG_RATIO_OF_TRACK_LOBE)
     .ratioOfTrackLobeToPeak = USS_ALG_RATIO_OF_TRACK_LOBE,
#else
     .ratioOfTrackLobeToPeak = 0.11111,
#endif
#if defined(USS_ALG_MAX_RATIO_PEAK_2_PEAK_VAR)
     .maxRatioPeak2PeakVariation = USS_ALG_MAX_RATIO_PEAK_2_PEAK_VAR,
#else
     .maxRatioPeak2PeakVariation = 0.2,
#endif
#if defined(USS_ALG_CORR_VAL_THRSH_CHK_FACT)
     .corrValueThresholdCheckFactor = USS_ALG_CORR_VAL_THRSH_CHK_FACT,
#else
     .corrValueThresholdCheckFactor = 0.05,
#endif
#if defined(USS_ALG_SIGN_VAL_THRSH_CHK)
     .signalValueThresholdCheck = USS_ALG_SIGN_VAL_THRSH_CHK,
#else
     .signalValueThresholdCheck = 100,
#endif
#if defined(USS_ALG_HIGH_FLOW_OPTION)
     .highFlowOption = (USS_highFlow_option)USS_ALG_HIGH_FLOW_OPTION,
#else
     .highFlowOption = (USS_highFlow_option)USS_highFlow_option_disabled,
#endif
#if defined(USS_ALG_CYCLESLIPTHRESHOLD)
     .cycleSlipThreshold = USS_ALG_CYCLESLIPTHRESHOLD,
#else
     .cycleSlipThreshold = 1.1,
#endif

#if defined(USS_ALG_THRESHOLDX1X3)
     .thresholdX1X3 = USS_ALG_THRESHOLDX1X3,
#else
     .thresholdX1X3 = 2000000,
#endif

#if defined(USS_ALG_MAX_SAMPLE_SHIFT)
    .maxSampleShift = USS_ALG_MAX_SAMPLE_SHIFT,
#else
#if ((USS_ALG_ABS_TOF_COMPUTATION_MODE == USS_ALG_ABS_TOF_COMPUTATION_MODE_LOBE_WIDE) || \
     (USS_ALG_ABS_TOF_COMPUTATION_MODE == USS_ALG_ABS_TOF_COMPUTATION_MODE_HILBERT_WIDE))
    .maxSampleShift = 20,
#else
    .maxSampleShift = 6,
#endif
#endif


#if defined(USS_ALG_NUM_CYCLES_SEARCH_CORR)
    .numCycleSearchCorrPeak = USS_ALG_NUM_CYCLES_SEARCH_CORR,
#else
    .numCycleSearchCorrPeak = 2,
#endif
    .pNvMemBuffer = &gNVMemBlock[0],
#if(USS_ALG_DTOF_WINDOWING_MODE != USS_ALG_DTOF_EST_WINDOW_OPTION_DISABLED)
    .pLEAMemBuffer1 = &gUSSLEARAMReservedBlock1[0],
#endif
    .pLEAMemBuffer2 = &gUSSLEARAMReservedBlock2[0],
    .hilbertTransformCoeffs = &gUSSHilbertCoeffs[USS_HILB_ALG_FILT_OPTION][0],
    .hilbertTransformCoeffsLength =
        (sizeof(gUSSHilbertCoeffs[USS_HILB_ALG_FILT_OPTION])
         / sizeof(int16_t)),
    .pBinaryPattern = &gUSSBinaryPattern[0],
    .maxBinaryPatternLenght = (sizeof(gUSSBinaryPattern) / sizeof(int16_t)),

#if(USS_NUM_OF_ADDTL_TRILL_PULSES>0)
    .pAdditionalBinaryPattern = &additionalBinarySequence[0],
#endif
#ifndef USS_ADDTL_BIN_PATTERN_SIZE
    .additionalPatternLength = 0,
#else
    .additionalPatternLength = USS_ADDTL_BIN_PATTERN_SIZE,
#endif

#if ((USS_ALG_ABS_TOF_COMPUTATION_MODE == USS_ALG_ABS_TOF_COMPUTATION_MODE_HILBERT) || \
     (USS_ALG_ABS_TOF_COMPUTATION_MODE == USS_ALG_ABS_TOF_COMPUTATION_MODE_HILBERT_WIDE) || \
     (USS_ALG_ABS_TOF_COMPUTATION_MODE == USS_ALG_ABS_TOF_COMPUTATION_MODE_LOBE_WIDE))
    .negSearchRange = USS_ALG_ABS_TOF_NEG_SEARCH_RANGE,
    .posSearchRange = USS_ALG_ABS_TOF_POS_SEARCH_RANGE,
#else
    .negSearchRange = -20,
    .posSearchRange = 2,
    .crossThreshold = 20,
#endif

#if ((USS_ALG_ABS_TOF_COMPUTATION_MODE == USS_ALG_ABS_TOF_COMPUTATION_MODE_HILBERT) || \
     (USS_ALG_ABS_TOF_COMPUTATION_MODE == USS_ALG_ABS_TOF_COMPUTATION_MODE_HILBERT_WIDE))
    .crossThreshold = USS_ALG_ABS_TOF_HILB_CROSS_THRESHOLD,
#else
    .crossThreshold = 20,
#endif


#if (defined(USS_ENABLE_ABSTOF_LOBE_OFFSET_CORRECTION) && (USS_ENABLE_ABSTOF_LOBE_OFFSET_CORRECTION == true))
    .pInterpCorrectionTablePtr   = gUSSAbsToFLUT,
    .interpCorrectionTableLenght = sizeof(gUSSAbsToFLUT)/(2*sizeof(int16_t)),
#else
    .pInterpCorrectionTablePtr = NULL,
    .interpCorrectionTableLenght = 0,
#endif

#if(USS_ALG_ENABLE_ESTIMATE_TEMPERATURE == true)
    .tempCalcObject = &ussAlgorithmTemperatureCalcObj,
    .temperatureCalcOption = USS_Alg_temperature_Calculation_Option_enabled,
#else
    .tempCalcObject = NULL,
    .temperatureCalcOption = USS_Alg_temperature_Calculation_Option_disabled,
#endif

#if (USS_ALG_VFR_CALIB_MODE==USS_ALG_VFR_CALIB_OPTION_FLOW)
    .volumeCalibrationOption = USS_Alg_volume_flow_Calibration_Option_flow,
    .calibObject.flowCalibObject = &ussAlgorithmVolumeFlowObj,
#elif (USS_ALG_VFR_CALIB_MODE==USS_ALG_VFR_CALIB_OPTION_FLOW_TEMPERATURE)
    .volumeCalibrationOption = USS_Alg_volume_flow_Calibration_Option_flow_temperature,
    .calibObject.flowTempCalibObject = &ussAlgorithmVolumeFlowTemperatureObj,
#else
    .volumeCalibrationOption = USS_Alg_volume_flow_Calibration_Option_disabled,
    .calibObject = NULL,
#endif
    .isInitAlgorithms = USS_ALG_IS_INIT_ALGORITHMS,
};

__persistent USS_SW_Library_configuration gUssSWConfig = {
    .systemConfig = &ussSystemConfig,
    .meterConfig = &ussMeterConfig,
    .measurementConfig = &ussMeasurementConfig,
    .pllConfiguration = &ussPLLConfig,
    .captureConfig = &ussCaptureConfig,
    .triggerConfig = &ussTriggerConfig,
    .interruptConfig = &ussInterruptConfig,
    .algorithmsConfig = &ussAlgConfig,
};

0 Cash Hao11 1 month ago in reply to Harvey Chapman

TI__Mastermind 35605 points

Hi,

I need the .h file not the .c file. Please send you .h file here.

Best regards,

Cash Hao

0 Harvey Chapman 1 month ago in reply to Cash Hao11

Prodigy 80 points

3681.USS_userConfig.h

0 Cash Hao11 1 month ago in reply to Harvey Chapman

TI__Mastermind 35605 points

Hi,

I run your data, however, I do not get the same result as you describe. On the 1st measurement, the dTOF is 2.48us, absTOF_UPS is 52.5us and absTOF_DNS is 50.0us. On the 2nd measurement, the library start reporting errors and do not have valid result.

After observe you configuration file. The threshold setting must be modified to a higher value to avoid unexpected issues. The current setting you are using is 0.11. I would suggest you to set at least to 0.25 and run the test again.

Best regards,

Cash Hao

0 Harvey Chapman 30 days ago in reply to Cash Hao11

Prodigy 80 points

The ratio/threshold in the config file is unused. This is the actual number used for the waveforms given:

gUssSWConfig.algorithmsConfig->ratioOfTrackLobeToPeak = 0.1883;

New information:

When I run under debug in the IDE, I get the behavior of the shifting ToF numbers
If I stop debugging, and reset the board (so using the exact same code, but not under debug), I get a steady ToF of 63.69us. It doesn't change at all.

0 Harvey Chapman 22 days ago in reply to Harvey Chapman

Prodigy 80 points

bump

0 Cash Hao11 2 days ago in reply to Harvey Chapman

TI__Mastermind 35605 points

Hi,

Sorry for the late response. Just get back from paternity leave.

What is the status of this issue. Can you catch me up on this?

Best regards,

Cash Hao

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MSP430FR6047: Why is the USS lib constantly moving dTOF numbers backwards by one sample period for the same exact waveform?