spark_logic.cpp File Reference

Functions
static void	fireSparkBySettingPinLow (IgnitionEvent *event, IgnitionOutputPin *output)
static void	assertPinAssigned (IgnitionOutputPin *output)
static int	getIgnitionPinForIndex (int cylinderIndex, ignition_mode_e ignitionMode)
static void	prepareCylinderIgnitionSchedule (angle_t dwellAngleDuration, floatms_t sparkDwell, IgnitionEvent *event)
static void	chargeTrailingSpark (IgnitionOutputPin *pin)
static void	fireTrailingSpark (IgnitionOutputPin *pin)
static void	overFireSparkAndPrepareNextSchedule (IgnitionEvent *event)
void	fireSparkAndPrepareNextSchedule (IgnitionEvent *event)
static bool	startDwellByTurningSparkPinHigh (IgnitionEvent *event, IgnitionOutputPin *output)
void	turnSparkPinHighStartCharging (IgnitionEvent *event)
static void	scheduleSparkEvent (bool limitedSpark, IgnitionEvent *event, int rpm, efitick_t edgeTimestamp, float currentPhase, float nextPhase)
void	initializeIgnitionActions ()
static void	prepareIgnitionSchedule ()
void	onTriggerEventSparkLogic (int rpm, efitick_t edgeTimestamp, float currentPhase, float nextPhase)
int	getNumberOfSparks (ignition_mode_e mode)
percent_t	getCoilDutyCycle (int rpm)

Variables
bool	verboseMode
bool	printFuelDebug
static const char *	prevSparkName = nullptr

Function Documentation

assertPinAssigned()

static void assertPinAssigned ( IgnitionOutputPin *  output )

static

Definition at line 52 of file spark_logic.cpp.

                                                         {
    if (!output->isInitialized()) {
        warning(ObdCode::CUSTOM_OBD_COIL_PIN_NOT_ASSIGNED, "Pin Not Assigned check configuration #%s", output->getName()); \
    }
}

Referenced by prepareCylinderIgnitionSchedule().

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chargeTrailingSpark()

static void chargeTrailingSpark ( IgnitionOutputPin *  pin )

static

Definition at line 162 of file spark_logic.cpp.

                                                        {
#if SPARK_EXTREME_LOGGING
    efiPrintf("chargeTrailingSpark %s", pin->getName());
#endif /* SPARK_EXTREME_LOGGING */
    pin->setHigh();
}

fireSparkAndPrepareNextSchedule()

void fireSparkAndPrepareNextSchedule

(

IgnitionEvent *

event

)

TL,DR: each IgnitionEvent is in charge of it's own scheduling forever, we plant next event while finishing handling of the current one

ratio of desired dwell duration to actual dwell duration gives us some idea of how good is input trigger jitter

Definition at line 187 of file spark_logic.cpp.

                                                           {
#if EFI_UNIT_TEST
    if (engine->onIgnitionEvent) {
        engine->onIgnitionEvent(event, false);
    }
#endif
 
    for (int i = 0; i< MAX_OUTPUTS_FOR_IGNITION;i++) {
        IgnitionOutputPin *output = event->outputs[i];
 
        if (output) {
            fireSparkBySettingPinLow(event, output);
        }
    }
 
    efitick_t nowNt = getTimeNowNt();
 
#if EFI_TOOTH_LOGGER
    LogTriggerCoilState(nowNt, false);
#endif // EFI_TOOTH_LOGGER
 
    float actualDwellMs = event->actualDwellTimer.getElapsedSeconds(nowNt) * 1e3;
    /**
     * ratio of desired dwell duration to actual dwell duration gives us some idea of how good is input trigger jitter
     */
    float ratio = actualDwellMs / event->sparkDwell;
    if (ratio < 0.8 || ratio > 1.2) {
    engine->outputChannels.sadDwellRatioCounter++;
    }
 
#if !EFI_UNIT_TEST
if (engineConfiguration->debugMode == DBG_DWELL_METRIC) {
#if EFI_TUNER_STUDIO
    // todo: smarted solution for index to field mapping
    switch (event->cylinderIndex) {
    case 0:
        engine->outputChannels.debugFloatField1 = ratio;
        break;
    case 1:
        engine->outputChannels.debugFloatField2 = ratio;
        break;
    case 2:
        engine->outputChannels.debugFloatField3 = ratio;
        break;
    case 3:
        engine->outputChannels.debugFloatField4 = ratio;
        break;
    }
#endif
 
    }
#endif /* EFI_UNIT_TEST */
    // now that we've just fired a coil let's prepare the new schedule for the next engine revolution
 
    angle_t dwellAngleDuration = engine->ignitionState.dwellDurationAngle;
    floatms_t sparkDwell = engine->ignitionState.sparkDwell;
    if (std::isnan(dwellAngleDuration) || std::isnan(sparkDwell)) {
        // we are here if engine has just stopped
        return;
    }
 
    // If there are more sparks to fire, schedule them
    if (event->sparksRemaining > 0) {
        event->sparksRemaining--;
 
        efitick_t nextDwellStart = nowNt + engine->engineState.multispark.delay;
        efitick_t nextFiring = nextDwellStart + engine->engineState.multispark.dwell;
#if SPARK_EXTREME_LOGGING
    efiPrintf("schedule multispark");
#endif /* SPARK_EXTREME_LOGGING */
 
        // We can schedule both of these right away, since we're going for "asap" not "particular angle"
        engine->executor.scheduleByTimestampNt("dwell", &event->dwellStartTimer, nextDwellStart, { &turnSparkPinHighStartCharging, event });
        engine->executor.scheduleByTimestampNt("firing", &event->sparkEvent.eventScheduling, nextFiring, { fireSparkAndPrepareNextSchedule, event });
    } else {
        if (engineConfiguration->enableTrailingSparks) {
#if SPARK_EXTREME_LOGGING
    efiPrintf("scheduleByAngle TrailingSparks");
#endif /* SPARK_EXTREME_LOGGING */
 
            // Trailing sparks are enabled - schedule an event for the corresponding trailing coil
            scheduleByAngle(
                &event->trailingSparkFire, nowNt, engine->engineState.trailingSparkAngle,
                { &fireTrailingSpark, &enginePins.trailingCoils[event->coilIndex] }
            );
        }
 
        // If all events have been scheduled, prepare for next time.
        prepareCylinderIgnitionSchedule(dwellAngleDuration, sparkDwell, event);
    }
 
    engine->onSparkFireKnockSense(event->coilIndex, nowNt);
}

Referenced by overFireSparkAndPrepareNextSchedule(), and scheduleSparkEvent().

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fireSparkBySettingPinLow()

static void fireSparkBySettingPinLow ( IgnitionEvent *  event, IgnitionOutputPin *  output  )

static

there are two kinds of 'out-of-order' 1) low goes before high, everything is fine afterwards

2) we have an un-matched low followed by legit pairs

Definition at line 29 of file spark_logic.cpp.

                                                                                      {
#if SPARK_EXTREME_LOGGING
    efiPrintf("spark goes low  revolution=%d [%s] %d current=%d id=%d", getRevolutionCounter(), output->getName(), time2print(getTimeNowUs()),
            output->currentLogicValue, event->sparkCounter);
#endif /* SPARK_EXTREME_LOGGING */
 
    /**
     * there are two kinds of 'out-of-order'
     * 1) low goes before high, everything is fine afterwards
     *
     * 2) we have an un-matched low followed by legit pairs
     */
    output->signalFallSparkId = event->sparkCounter;
 
    if (!output->currentLogicValue && !event->wasSparkLimited) {
#if SPARK_EXTREME_LOGGING
        printf("out-of-order coil off %s", output->getName());
#endif /* SPARK_EXTREME_LOGGING */
        warning(ObdCode::CUSTOM_OUT_OF_ORDER_COIL, "out-of-order coil off %s", output->getName());
    }
    output->setLow();
}

Referenced by fireSparkAndPrepareNextSchedule().

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fireTrailingSpark()

static void fireTrailingSpark ( IgnitionOutputPin *  pin )

static

Definition at line 169 of file spark_logic.cpp.

                                                      {
#if SPARK_EXTREME_LOGGING
    efiPrintf("fireTrailingSpark %s", pin->getName());
#endif /* SPARK_EXTREME_LOGGING */
    pin->setLow();
}

getCoilDutyCycle()

percent_t getCoilDutyCycle

(

int

rpm

)

See also

getInjectorDutyCycle

Definition at line 630 of file spark_logic.cpp.

                                    {
    floatms_t totalPerCycle = engine->ignitionState.sparkDwell * getNumberOfSparks(getCurrentIgnitionMode());
    floatms_t engineCycleDuration = getCrankshaftRevolutionTimeMs(rpm) * (getEngineRotationState()->getOperationMode() == TWO_STROKE ? 1 : 2);
    return 100 * totalPerCycle / engineCycleDuration;
}

Referenced by populateFrame(), and updateIgnition().

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getIgnitionPinForIndex()

static int getIgnitionPinForIndex ( int  cylinderIndex, ignition_mode_e  ignitionMode  )

static

Parameters

cylinderIndex

from 0 to cylinderCount, not cylinder number

Definition at line 61 of file spark_logic.cpp.

                                                                                   {
    switch (ignitionMode) {
    case IM_ONE_COIL:
        return 0;
    case IM_WASTED_SPARK: {
        if (engineConfiguration->cylindersCount == 1) {
            // we do not want to divide by zero
            return 0;
        }
        return cylinderIndex % (engineConfiguration->cylindersCount / 2);
    }
    case IM_INDIVIDUAL_COILS:
        return cylinderIndex;
    case IM_TWO_COILS:
        return cylinderIndex % 2;
 
    default:
        firmwareError(ObdCode::CUSTOM_OBD_IGNITION_MODE, "Invalid ignition mode getIgnitionPinForIndex(): %d", engineConfiguration->ignitionMode);
        return 0;
    }
}

Referenced by prepareCylinderIgnitionSchedule().

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getNumberOfSparks()

int getNumberOfSparks

(

ignition_mode_e

mode

)

Number of sparks per physical coil

See also

getNumberOfInjections

Definition at line 611 of file spark_logic.cpp.

                                            {
    switch (mode) {
    case IM_ONE_COIL:
        return engineConfiguration->cylindersCount;
    case IM_TWO_COILS:
        return engineConfiguration->cylindersCount / 2;
    case IM_INDIVIDUAL_COILS:
        return 1;
    case IM_WASTED_SPARK:
        return 2;
    default:
        firmwareError(ObdCode::CUSTOM_ERR_IGNITION_MODE, "Unexpected ignition_mode_e %d", mode);
        return 1;
    }
}

Referenced by getCoilDutyCycle().

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initializeIgnitionActions()

void initializeIgnitionActions

(

)

Definition at line 492 of file spark_logic.cpp.

                                 {
    IgnitionEventList *list = &engine->ignitionEvents;
    angle_t dwellAngle = engine->ignitionState.dwellDurationAngle;
    floatms_t sparkDwell = engine->ignitionState.sparkDwell;
    if (std::isnan(engine->engineState.timingAdvance[0]) || std::isnan(dwellAngle)) {
        // error should already be reported
        // need to invalidate previous ignition schedule
        list->isReady = false;
        return;
    }
    efiAssertVoid(ObdCode::CUSTOM_ERR_6592, engineConfiguration->cylindersCount > 0, "cylindersCount");
 
    for (size_t cylinderIndex = 0; cylinderIndex < engineConfiguration->cylindersCount; cylinderIndex++) {
        list->elements[cylinderIndex].cylinderIndex = cylinderIndex;
        prepareCylinderIgnitionSchedule(dwellAngle, sparkDwell, &list->elements[cylinderIndex]);
    }
    list->isReady = true;
}

Referenced by prepareIgnitionSchedule().

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onTriggerEventSparkLogic()

void onTriggerEventSparkLogic	(	int	rpm,
		efitick_t	edgeTimestamp,
		float	currentPhase,
		float	nextPhase
	)

Ignition schedule is defined once per revolution See initializeIgnitionActions()

Definition at line 535 of file spark_logic.cpp.

                                                                                                     {
    ScopePerf perf(PE::OnTriggerEventSparkLogic);
 
    if (!isValidRpm(rpm) || !engineConfiguration->isIgnitionEnabled) {
         // this might happen for instance in case of a single trigger event after a pause
        return;
    }
 
    LimpState limitedSparkState = getLimpManager()->allowIgnition();
 
    // todo: eliminate state copy logic by giving limpManager it's owm limp_manager.txt and leveraging LiveData
    engine->outputChannels.sparkCutReason = (int8_t)limitedSparkState.reason;
    bool limitedSpark = !limitedSparkState.value;
 
    if (!engine->ignitionEvents.isReady) {
        prepareIgnitionSchedule();
    }
 
 
    /**
     * Ignition schedule is defined once per revolution
     * See initializeIgnitionActions()
     */
 
 
//  scheduleSimpleMsg(&logger, "eventId spark ", eventIndex);
    if (engine->ignitionEvents.isReady) {
        for (size_t i = 0; i < engineConfiguration->cylindersCount; i++) {
            IgnitionEvent *event = &engine->ignitionEvents.elements[i];
 
            if (!isPhaseInRange(event->dwellAngle, currentPhase, nextPhase)) {
                continue;
            }
 
            if (i == 0 && engineConfiguration->artificialTestMisfire && (getRevolutionCounter() % ((int)engineConfiguration->scriptSetting[5]) == 0)) {
                // artificial misfire on cylinder #1 for testing purposes
                // enable artificialMisfire
                warning(ObdCode::CUSTOM_ARTIFICIAL_MISFIRE, "artificial misfire on cylinder #1 for testing purposes %d", engine->engineState.globalSparkCounter);
                continue;
            }
#if EFI_LAUNCH_CONTROL
            bool sparkLimited = engine->softSparkLimiter.shouldSkip() || engine->hardSparkLimiter.shouldSkip();
            engine->ignitionState.luaIgnitionSkip = sparkLimited;
            if (sparkLimited) {
                continue;
            }
#endif // EFI_LAUNCH_CONTROL
 
#if EFI_ANTILAG_SYSTEM && EFI_LAUNCH_CONTROL
/*
       if (engine->antilagController.isAntilagCondition) {
            if (engine->ALSsoftSparkLimiter.shouldSkip()) {
                continue;
            }
        }
        float throttleIntent = Sensor::getOrZero(SensorType::DriverThrottleIntent);
        engine->antilagController.timingALSSkip = interpolate3d(
            config->ALSIgnSkipTable,
            config->alsIgnSkipLoadBins, throttleIntent,
            config->alsIgnSkiprpmBins, rpm
        );
 
            auto ALSSkipRatio = engine->antilagController.timingALSSkip;
            engine->ALSsoftSparkLimiter.setTargetSkipRatio(ALSSkipRatio/100);
*/
#endif // EFI_ANTILAG_SYSTEM
 
            scheduleSparkEvent(limitedSpark, event, rpm, edgeTimestamp, currentPhase, nextPhase);
        }
    }
}

Referenced by mainTriggerCallback().

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overFireSparkAndPrepareNextSchedule()

static void overFireSparkAndPrepareNextSchedule ( IgnitionEvent *  event )

static

Definition at line 176 of file spark_logic.cpp.

                                                                      {
#if SPARK_EXTREME_LOGGING
    efiPrintf("overFireSparkAndPrepareNextSchedule %s", event->outputs[0]->getName());
#endif /* SPARK_EXTREME_LOGGING */
  engine->engineState.overDwellCounter++;
    fireSparkAndPrepareNextSchedule(event);
}

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prepareCylinderIgnitionSchedule()

static void prepareCylinderIgnitionSchedule ( angle_t  dwellAngleDuration, floatms_t  sparkDwell, IgnitionEvent *  event  )

static

Definition at line 83 of file spark_logic.cpp.

                                                                                                                    {
    // todo: clean up this implementation? does not look too nice as is.
 
    // let's save planned duration so that we can later compare it with reality
    event->sparkDwell = sparkDwell;
 
    auto ignitionMode = getCurrentIgnitionMode();
    const int index = getIgnitionPinForIndex(event->cylinderIndex, ignitionMode);
    const int coilIndex = ID2INDEX(getFiringOrderCylinderId(index));
    angle_t finalIgnitionTiming =   getEngineState()->timingAdvance[coilIndex];
    // Stash which cylinder we're scheduling so that knock sensing knows which
    // cylinder just fired
    event->coilIndex = coilIndex;
 
    // 10 ATDC ends up as 710, convert it to -10 so we can log and clamp correctly
    if (finalIgnitionTiming > 360) {
        finalIgnitionTiming -= 720;
    }
 
    // Clamp the final ignition timing to the configured limits
    // finalIgnitionTiming is deg BTDC
    // minimumIgnitionTiming limits maximum retard
    // maximumIgnitionTiming limits maximum advance
    /*
    https://github.com/rusefi/rusefi/issues/5894 disabling feature for now
    finalIgnitionTiming = clampF(engineConfiguration->minimumIgnitionTiming, finalIgnitionTiming, engineConfiguration->maximumIgnitionTiming);
    */
 
    engine->outputChannels.ignitionAdvanceCyl[event->cylinderIndex] = finalIgnitionTiming;
 
    angle_t sparkAngle =
        // Negate because timing *before* TDC, and we schedule *after* TDC
        - finalIgnitionTiming
        // Offset by this cylinder's position in the cycle
        + getPerCylinderFiringOrderOffset(event->cylinderIndex, coilIndex);
 
    efiAssertVoid(ObdCode::CUSTOM_SPARK_ANGLE_1, !std::isnan(sparkAngle), "sparkAngle#1");
    wrapAngle(sparkAngle, "findAngle#2", ObdCode::CUSTOM_ERR_6550);
    event->sparkAngle = sparkAngle;
 
    engine->outputChannels.currentIgnitionMode = static_cast<uint8_t>(ignitionMode);
 
    IgnitionOutputPin *output = &enginePins.coils[coilIndex];
    event->outputs[0] = output;
    IgnitionOutputPin *secondOutput;
 
    // We need two outputs if:
    //  - we are running wasted spark, and have "two wire" mode enabled
    //  - We are running sequential mode, but we're cranking, so we should run in two wire wasted mode (not one wire wasted)
    bool isTwoWireWasted = engineConfiguration->twoWireBatchIgnition || (engineConfiguration->ignitionMode == IM_INDIVIDUAL_COILS);
    if (ignitionMode == IM_WASTED_SPARK && isTwoWireWasted) {
        int secondIndex = index + engineConfiguration->cylindersCount / 2;
        int secondCoilIndex = ID2INDEX(getFiringOrderCylinderId(secondIndex));
        secondOutput = &enginePins.coils[secondCoilIndex];
        assertPinAssigned(secondOutput);
    } else {
        secondOutput = nullptr;
    }
 
    assertPinAssigned(output);
 
    event->outputs[1] = secondOutput;
 
 
    angle_t dwellStartAngle = sparkAngle - dwellAngleDuration;
    efiAssertVoid(ObdCode::CUSTOM_ERR_6590, !std::isnan(dwellStartAngle), "findAngle#5");
 
    assertAngleRange(dwellStartAngle, "findAngle dwellStartAngle", ObdCode::CUSTOM_ERR_6550);
    wrapAngle(dwellStartAngle, "findAngle#7", ObdCode::CUSTOM_ERR_6550);
    event->dwellAngle = dwellStartAngle;
 
#if FUEL_MATH_EXTREME_LOGGING
    if (printFuelDebug) {
        printf("addIgnitionEvent %s angle=%.1f\n", output->getName(), dwellStartAngle);
    }
    //  efiPrintf("addIgnitionEvent %s ind=%d", output->name, event->dwellPosition->eventIndex);
#endif /* FUEL_MATH_EXTREME_LOGGING */
}

Referenced by fireSparkAndPrepareNextSchedule(), and initializeIgnitionActions().

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prepareIgnitionSchedule()

static void prepareIgnitionSchedule ( )

static

Definition at line 511 of file spark_logic.cpp.

                                      {
    ScopePerf perf(PE::PrepareIgnitionSchedule);
 
    operation_mode_e operationMode = getEngineRotationState()->getOperationMode();
    float maxAllowedDwellAngle;
 
    if (getCurrentIgnitionMode() == IM_ONE_COIL) {
        maxAllowedDwellAngle = getEngineCycle(operationMode) / engineConfiguration->cylindersCount / 1.1;
    } else {
      maxAllowedDwellAngle = (int) (getEngineCycle(operationMode) / 2); // the cast is about making Coverity happy
    }
 
    if (engine->ignitionState.dwellDurationAngle == 0) {
        warning(ObdCode::CUSTOM_ZERO_DWELL, "dwell is zero?");
    }
    if (engine->ignitionState.dwellDurationAngle > maxAllowedDwellAngle) {
        warning(ObdCode::CUSTOM_DWELL_TOO_LONG, "dwell angle too long: %.2f", engine->ignitionState.dwellDurationAngle);
    }
 
    // todo: add some check for dwell overflow? like 4 times 6 ms while engine cycle is less then that
 
    initializeIgnitionActions();
}

Referenced by onTriggerEventSparkLogic().

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scheduleSparkEvent()

static void scheduleSparkEvent ( bool  limitedSpark, IgnitionEvent *  event, int  rpm, efitick_t  edgeTimestamp, float  currentPhase, float  nextPhase  )

static

By the way 32-bit value should hold at least 400 hours of events at 6K RPM x 12 events per revolution [tag:duration_limit]

The start of charge is always within the current trigger event range, so just plain time-based scheduling

Note how we do not check if spark is limited or not while scheduling 'spark down' This way we make sure that coil dwell started while spark was enabled would fire and not burn the coil.

Spark event is often happening during a later trigger event timeframe

todo: can we please comprehend/document how this even works? we seem to be reusing 'sparkEvent.scheduling' instance and it looks like current (smart?) re-queuing is effectively cancelling out the overdwell? is that the way this was intended to work? [tag:overdwell]

Definition at line 374 of file spark_logic.cpp.

                                                                               {
 
    angle_t sparkAngle = event->sparkAngle;
    const floatms_t dwellMs = engine->ignitionState.sparkDwell;
    if (std::isnan(dwellMs) || dwellMs <= 0) {
        warning(ObdCode::CUSTOM_DWELL, "invalid dwell to handle: %.2f at %d", dwellMs, rpm);
        return;
    }
    if (std::isnan(sparkAngle)) {
        warning(ObdCode::CUSTOM_ADVANCE_SPARK, "NaN advance");
        return;
    }
 
    float angleOffset = event->dwellAngle - currentPhase;
    if (angleOffset < 0) {
        angleOffset += engine->engineState.engineCycle;
    }
 
    /**
     * By the way 32-bit value should hold at least 400 hours of events at 6K RPM x 12 events per revolution
     * [tag:duration_limit]
     */
    event->sparkCounter = engine->engineState.globalSparkCounter++;
    event->wasSparkLimited = limitedSpark;
 
    efitick_t chargeTime = 0;
 
    /**
     * The start of charge is always within the current trigger event range, so just plain time-based scheduling
     */
    if (!limitedSpark) {
#if SPARK_EXTREME_LOGGING
        efiPrintf("scheduling sparkUp revolution=%d [%s] %d later id=%d", getRevolutionCounter(), event->getOutputForLoggins()->getName(), (int)angleOffset,
                event->sparkCounter);
#endif /* SPARK_EXTREME_LOGGING */
 
 
        /**
         * Note how we do not check if spark is limited or not while scheduling 'spark down'
         * This way we make sure that coil dwell started while spark was enabled would fire and not burn
         * the coil.
         */
        chargeTime = scheduleByAngle(&event->dwellStartTimer, edgeTimestamp, angleOffset, { &turnSparkPinHighStartCharging, event });
 
#if EFI_UNIT_TEST
        engine->onScheduleTurnSparkPinHighStartCharging(*event, edgeTimestamp, angleOffset, chargeTime);
#endif
 
#if SPARK_EXTREME_LOGGING
        efiPrintf("sparkUp revolution scheduled=%d for %d ticks [%s] %d later id=%d", getRevolutionCounter(), time2print(chargeTime), event->getOutputForLoggins()->getName(), (int)angleOffset,
                event->sparkCounter);
#endif /* SPARK_EXTREME_LOGGING */
 
 
        event->sparksRemaining = engine->engineState.multispark.count;
    } else {
        // don't fire multispark if spark is cut completely!
        event->sparksRemaining = 0;
    }
 
    /**
     * Spark event is often happening during a later trigger event timeframe
     */
 
    efiAssertVoid(ObdCode::CUSTOM_ERR_6591, !std::isnan(sparkAngle), "findAngle#4");
    assertAngleRange(sparkAngle, "findAngle#a5", ObdCode::CUSTOM_ERR_6549);
 
    bool isTimeScheduled = engine->module<TriggerScheduler>()->scheduleOrQueue(
            "spark",
        &event->sparkEvent, edgeTimestamp, sparkAngle,
        { fireSparkAndPrepareNextSchedule, event },
        currentPhase, nextPhase);
 
    if (isTimeScheduled) {
      // event was scheduled by time, we expect it to happen reliably
#if SPARK_EXTREME_LOGGING
        efiPrintf("scheduling sparkDown revolution=%d [%s] later id=%d", getRevolutionCounter(), event->getOutputForLoggins()->getName(), event->sparkCounter);
#endif /* FUEL_MATH_EXTREME_LOGGING */
    } else {
      // event was queued in relation to some expected tooth event in the future which might just never come so we shall protect from over-dwell
#if SPARK_EXTREME_LOGGING
        efiPrintf("to queue sparkDown revolution=%d [%s] for id=%d angle=%.1f", getRevolutionCounter(), event->getOutputForLoggins()->getName(), event->sparkCounter, sparkAngle);
#endif /* SPARK_EXTREME_LOGGING */
 
        if (!limitedSpark && ENABLE_OVERDWELL_PROTECTION) {
            // auto fire spark at 1.5x nominal dwell
            efitick_t fireTime = sumTickAndFloat(chargeTime, MSF2NT(1.5f * dwellMs));
 
#if SPARK_EXTREME_LOGGING
        efiPrintf("scheduling overdwell sparkDown revolution=%d [%s] for id=%d for %d ticks", getRevolutionCounter(), event->getOutputForLoggins()->getName(), event->sparkCounter, fireTime);
#endif /* SPARK_EXTREME_LOGGING */
 
      /**
       * todo: can we please comprehend/document how this even works? we seem to be reusing 'sparkEvent.scheduling' instance
       * and it looks like current (smart?) re-queuing is effectively cancelling out the overdwell? is that the way this was intended to work?
       * [tag:overdwell]
       */
            engine->executor.scheduleByTimestampNt("overdwell", &event->sparkEvent.eventScheduling, fireTime, { overFireSparkAndPrepareNextSchedule, event });
 
#if EFI_UNIT_TEST
            engine->onScheduleOverFireSparkAndPrepareNextSchedule(*event, fireTime);
#endif
        } else {
          engine->engineState.overDwellNotScheduledCounter++;
        }
    }
 
#if EFI_UNIT_TEST
    if (verboseMode) {
        printf("spark dwell@ %.1f spark@ %.2f id=%d sparkCounter=%d\r\n", event->dwellAngle,
            event->sparkEvent.getAngle(),
            event->coilIndex,
            event->sparkCounter);
    }
#endif
}

Referenced by onTriggerEventSparkLogic().

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startDwellByTurningSparkPinHigh()

static bool startDwellByTurningSparkPinHigh ( IgnitionEvent *  event, IgnitionOutputPin *  output  )

static

fact: we schedule both start of dwell and spark firing using a combination of time and trigger event domain in case of bad/noisy signal we can get unexpected trigger events and a small time delay for spark firing before we even start dwell if it scheduled with a longer time-only delay with fewer trigger events

here we are detecting such out-of-order processing and choose the safer route of not even starting dwell [tag] #6349

Definition at line 281 of file spark_logic.cpp.

                                                                                             {
    // todo: no reason for this to be disabled in unit_test mode?!
#if ! EFI_UNIT_TEST
 
    if (Sensor::getOrZero(SensorType::Rpm) > 2 * engineConfiguration->cranking.rpm) {
        const char *outputName = output->getName();
        if (prevSparkName == outputName && getCurrentIgnitionMode() != IM_ONE_COIL) {
            warning(ObdCode::CUSTOM_OBD_SKIPPED_SPARK, "looks like skipped spark event revolution=%d [%s]", getRevolutionCounter(), outputName);
        }
        prevSparkName = outputName;
    }
#endif /* EFI_UNIT_TEST */
 
 
#if SPARK_EXTREME_LOGGING
    efiPrintf("spark goes high revolution=%d [%s] %d current=%d id=%d", getRevolutionCounter(), output->getName(), time2print(getTimeNowUs()),
            output->currentLogicValue, event->sparkCounter);
#endif /* SPARK_EXTREME_LOGGING */
 
    if (output->signalFallSparkId >= event->sparkCounter) {
      /**
       * fact: we schedule both start of dwell and spark firing using a combination of time and trigger event domain
       * in case of bad/noisy signal we can get unexpected trigger events and a small time delay for spark firing before
       * we even start dwell if it scheduled with a longer time-only delay with fewer trigger events
       *
       * here we are detecting such out-of-order processing and choose the safer route of not even starting dwell
       * [tag] #6349
       */
 
#if SPARK_EXTREME_LOGGING
        efiPrintf("[%s] bail spark dwell\n", output->getName());
#endif /* SPARK_EXTREME_LOGGING */
        // let's save this coil if things do not look right
        engine->engineState.sparkOutOfOrderCounter++;
        return true;
    }
 
    output->setHigh();
    return false;
}

Referenced by turnSparkPinHighStartCharging().

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turnSparkPinHighStartCharging()

void turnSparkPinHighStartCharging

(

IgnitionEvent *

event

)

Definition at line 322 of file spark_logic.cpp.

                                                         {
    efitick_t nowNt = getTimeNowNt();
 
    event->actualDwellTimer.reset(nowNt);
 
  bool skippedDwellDueToTriggerNoised = false;
    for (int i = 0; i< MAX_OUTPUTS_FOR_IGNITION;i++) {
        IgnitionOutputPin *output = event->outputs[i];
        if (output != NULL) {
          // at the moment we have a funny xor as if outputs could have different destiny. That's probably an over exaggeration,
          // realistically it should be enough to check the sequencing of only the first output but that would be less elegant
          //
          // maybe it would have need nicer if instead of an array of outputs we had a linked list of outputs? but that's just daydreaming.
            skippedDwellDueToTriggerNoised |= startDwellByTurningSparkPinHigh(event, output);
        }
    }
 
#if EFI_UNIT_TEST
  engine->incrementBailedOnDwellCount();
#endif
 
 
  if (!skippedDwellDueToTriggerNoised) {
 
#if EFI_UNIT_TEST
    if (engine->onIgnitionEvent) {
        engine->onIgnitionEvent(event, true);
    }
#endif
 
#if EFI_TOOTH_LOGGER
    LogTriggerCoilState(nowNt, true);
#endif // EFI_TOOTH_LOGGER
  }
 
 
    if (engineConfiguration->enableTrailingSparks) {
        IgnitionOutputPin *output = &enginePins.trailingCoils[event->coilIndex];
        // Trailing sparks are enabled - schedule an event for the corresponding trailing coil
        scheduleByAngle(
            &event->trailingSparkCharge, nowNt, engine->engineState.trailingSparkAngle,
            { &chargeTrailingSpark, output }
        );
    }
}

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Variable Documentation

prevSparkName

const char* prevSparkName = nullptr

static

Definition at line 27 of file spark_logic.cpp.

Referenced by startDwellByTurningSparkPinHigh().

printFuelDebug

bool printFuelDebug

extern

Definition at line 27 of file main_trigger_callback.cpp.

Referenced by prepareCylinderIgnitionSchedule().

verboseMode

bool verboseMode

extern

Go to the source code of this file.