main_trigger_callback.cpp

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/**
 * @file    main_trigger_callback.cpp
 * @brief   Main logic is here!
 *
 * See http://rusefi.com/docs/html/
 *
 * @date Feb 7, 2013
 * @author Andrey Belomutskiy, (c) 2012-2020
 *
 * This file is part of rusEfi - see http://rusefi.com
 *
 * rusEfi is free software; you can redistribute it and/or modify it under the terms of
 * the GNU General Public License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * rusEfi is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program.
 * If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "pch.h"
 
#if EFI_PRINTF_FUEL_DETAILS
    bool printFuelDebug = false;
#endif // EFI_PRINTF_FUEL_DETAILS
 
#if EFI_ENGINE_CONTROL && EFI_SHAFT_POSITION_INPUT
 
#include "main_trigger_callback.h"
#include "trigger_central.h"
#include "spark_logic.h"
#include "advance_map.h"
#include "cyclic_buffer.h"
#include "fuel_math.h"
#include "cdm_ion_sense.h"
#include "local_version_holder.h"
#include "event_queue.h"
#include "injector_model.h"
#include "injection_gpio.h"
 
#if EFI_LAUNCH_CONTROL
#include "launch_control.h"
#endif // EFI_LAUNCH_CONTROL
 
#include "backup_ram.h"
 
void endSimultaneousInjection(InjectionEvent *event) {
    endSimultaneousInjectionOnlyTogglePins();
    event->update();
}
 
void turnInjectionPinLow(InjectionEvent *event) {
    efitick_t nowNt = getTimeNowNt();
 
    for (size_t i = 0; i < efi::size(event->outputs); i++) {
        InjectorOutputPin *output = event->outputs[i];
        if (output) {
            output->close(nowNt);
        }
    }
    event->update();
}
 
static void turnInjectionPinLowStage2(InjectionEvent* event) {
    efitick_t nowNt = getTimeNowNt();
 
    for (size_t i = 0; i < efi::size(event->outputsStage2); i++) {
        InjectorOutputPin *output = event->outputsStage2[i];
        if (output) {
            output->close(nowNt);
        }
    }
}
 
void InjectionEvent::onTriggerTooth(efitick_t nowNt, float currentPhase, float nextPhase) {
    auto eventAngle = injectionStartAngle;
 
    // Determine whether our angle is going to happen before (or near) the next tooth
    if (!isPhaseInRange(eventAngle, currentPhase, nextPhase)) {
        return;
    }
 
    // Select fuel mass from the correct cylinder
    auto injectionMassGrams = getEngineState()->injectionMass[this->cylinderNumber];
 
    // Perform wall wetting adjustment on fuel mass, not duration, so that
    // it's correct during fuel pressure (injector flow) or battery voltage (deadtime) transients
    // TODO: is it correct to wall wet on both pulses?
    injectionMassGrams = wallFuel.adjust(injectionMassGrams);
 
    // Disable staging in simultaneous mode
    float stage2Fraction = isSimultaneous ? 0 : getEngineState()->injectionStage2Fraction;
 
    // Compute fraction of fuel on stage 2, remainder goes on stage 1
    const float injectionMassStage2 = stage2Fraction * injectionMassGrams;
    float injectionMassStage1 = injectionMassGrams - injectionMassStage2;
 
#if EFI_VEHICLE_SPEED
    {
        // Log this fuel as consumed
 
        bool isCranking = getEngineRotationState()->isCranking();
        int numberOfInjections = isCranking ? getNumberOfInjections(engineConfiguration->crankingInjectionMode) : getNumberOfInjections(engineConfiguration->injectionMode);
 
        float actualInjectedMass = numberOfInjections * (injectionMassStage1 + injectionMassStage2);
 
        engine->module<TripOdometer>()->consumeFuel(actualInjectedMass, nowNt);
    }
#endif // EFI_VEHICLE_SPEED
 
    const floatms_t injectionDurationStage1 = engine->module<InjectorModelPrimary>()->getInjectionDuration(injectionMassStage1);
    const floatms_t injectionDurationStage2 = injectionMassStage2 > 0 ? engine->module<InjectorModelSecondary>()->getInjectionDuration(injectionMassStage2) : 0;
 
#if EFI_PRINTF_FUEL_DETAILS
    if (printFuelDebug) {
        printf("fuel injectionDuration=%.2fms adjusted=%.2fms\n",
                getEngineState()->injectionDuration,
          injectionDurationStage1);
    }
#endif /*EFI_PRINTF_FUEL_DETAILS */
 
    if (this->cylinderNumber == 0) {
        engine->outputChannels.actualLastInjection = injectionDurationStage1;
        engine->outputChannels.actualLastInjectionStage2 = injectionDurationStage2;
    }
 
    if (cisnan(injectionDurationStage1) || cisnan(injectionDurationStage2)) {
        warning(ObdCode::CUSTOM_OBD_NAN_INJECTION, "NaN injection pulse");
        return;
    }
    if (injectionDurationStage1 < 0) {
        warning(ObdCode::CUSTOM_OBD_NEG_INJECTION, "Negative injection pulse %.2f", injectionDurationStage1);
        return;
    }
 
    // If somebody commanded an impossibly short injection, do nothing.
    // Durations under 50us-ish aren't safe for the scheduler
    // as their order may be swapped, resulting in a stuck open injector
    // see https://github.com/rusefi/rusefi/pull/596 for more details
    if (injectionDurationStage1 < 0.050f)
    {
        return;
    }
 
    floatus_t durationUsStage1 = MS2US(injectionDurationStage1);
    floatus_t durationUsStage2 = MS2US(injectionDurationStage2);
 
    // Only bother with the second stage if it's long enough to be relevant
    bool hasStage2Injection = durationUsStage2 > 50;
 
#if EFI_PRINTF_FUEL_DETAILS
    if (printFuelDebug) {
        InjectorOutputPin *output = outputs[0];
        printf("handleFuelInjectionEvent fuelout %s injection_duration %dus engineCycleDuration=%.1fms\t\n", output->getName(), (int)durationUsStage1,
                (int)MS2US(getCrankshaftRevolutionTimeMs(Sensor::getOrZero(SensorType::Rpm))) / 1000.0);
    }
#endif /*EFI_PRINTF_FUEL_DETAILS */
 
    action_s startAction, endActionStage1, endActionStage2;
    // We use different callbacks based on whether we're running sequential mode or not - everything else is the same
    if (isSimultaneous) {
        startAction = startSimultaneousInjection;
        endActionStage1 = { &endSimultaneousInjection, this };
    } else {
        uintptr_t startActionPtr = reinterpret_cast<uintptr_t>(this);
 
        if (hasStage2Injection) {
            // Set the low bit in the arg if there's a secondary injection to start too
            startActionPtr |= 1;
        }
 
        // sequential or batch
        startAction = { &turnInjectionPinHigh, startActionPtr };
        endActionStage1 = { &turnInjectionPinLow, this };
        endActionStage2 = { &turnInjectionPinLowStage2, this };
    }
 
    // Correctly wrap injection start angle
    float angleFromNow = eventAngle - currentPhase;
    if (angleFromNow < 0) {
        angleFromNow += getEngineState()->engineCycle;
    }
 
    // Schedule opening (stage 1 + stage 2 open together)
    efitick_t startTime = scheduleByAngle(nullptr, nowNt, angleFromNow, startAction);
 
    // Schedule closing stage 1
    efitick_t turnOffTimeStage1 = startTime + US2NT((int)durationUsStage1);
    getExecutorInterface()->scheduleByTimestampNt("inj", nullptr, turnOffTimeStage1, endActionStage1);
 
    // Schedule closing stage 2 (if applicable)
    if (hasStage2Injection && endActionStage2) {
        efitick_t turnOffTimeStage2 = startTime + US2NT((int)durationUsStage2);
        getExecutorInterface()->scheduleByTimestampNt("inj stage 2", nullptr, turnOffTimeStage2, endActionStage2);
    }
 
#if EFI_DEFAILED_LOGGING
    printf("scheduling injection angle=%.2f/delay=%d injectionDuration=%d %d\r\n", angleFromNow, (int)NT2US(startTime - nowNt), (int)durationUsStage1, (int)durationUsStage2);
#endif
#if EFI_DEFAILED_LOGGING
    efiPrintf("handleFuel pin=%s eventIndex %d duration=%.2fms %d", outputs[0]->name,
            injEventIndex,
            injectionDurationStage1,
            getRevolutionCounter());
    efiPrintf("handleFuel pin=%s delay=%.2f %d", outputs[0]->name, NT2US(startTime - nowNt),
            getRevolutionCounter());
#endif /* EFI_DEFAILED_LOGGING */
}
 
static void handleFuel(efitick_t nowNt, float currentPhase, float nextPhase) {
    ScopePerf perf(PE::HandleFuel);
 
    efiAssertVoid(ObdCode::CUSTOM_STACK_6627, hasLotsOfRemainingStack(), "lowstck#3");
 
    LimpState limitedFuelState = getLimpManager()->allowInjection();
 
    // todo: eliminate state copy logic by giving limpManager it's owm limp_manager.txt and leveraging LiveData
    engine->outputChannels.fuelCutReason = (int8_t)limitedFuelState.reason;
    bool limitedFuel = !limitedFuelState.value;
    if (limitedFuel) {
        return;
    }
 
    // This is called in the fast callback already, but since we may have just achieved engine sync (and RPM)
    // for the first time, force update the schedule so that we can inject immediately if necessary
    FuelSchedule *fs = getFuelSchedule();
    if (!fs->isReady) {
        fs->addFuelEvents();
    }
 
#if FUEL_MATH_EXTREME_LOGGING
    if (printFuelDebug) {
        efiPrintf("handleFuel [%.1f, %.1f) %d", currentPhase, nextPhase, getRevolutionCounter());
    }
#endif /* FUEL_MATH_EXTREME_LOGGING */
 
    fs->onTriggerTooth(nowNt, currentPhase, nextPhase);
}
 
/**
 * This is the main trigger event handler.
 * Both injection and ignition are controlled from this method.
 */
void mainTriggerCallback(uint32_t trgEventIndex, efitick_t edgeTimestamp, angle_t currentPhase, angle_t nextPhase) {
    ScopePerf perf(PE::MainTriggerCallback);
 
#if ! HW_CHECK_MODE
    if (hasFirmwareError()) {
        /**
         * In case on a major error we should not process any more events.
         */
        return;
    }
#endif // HW_CHECK_MODE
 
    int rpm = engine->rpmCalculator.getCachedRpm();
    if (rpm == 0) {
        // this happens while we just start cranking
 
        // todo: check for 'trigger->is_synchnonized?'
        return;
    }
    if (rpm == NOISY_RPM) {
        warning(ObdCode::OBD_Crankshaft_Position_Sensor_A_Circuit_Malfunction, "noisy trigger");
        return;
    }
 
 
    if (trgEventIndex == 0) {
 
        if (getTriggerCentral()->checkIfTriggerConfigChanged()) {
            getIgnitionEvents()->isReady = false; // we need to rebuild complete ignition schedule
            getFuelSchedule()->isReady = false;
            // moved 'triggerIndexByAngle' into trigger initialization (why was it invoked from here if it's only about trigger shape & optimization?)
            // see updateTriggerWaveform() -> prepareOutputSignals()
 
            // we need this to apply new 'triggerIndexByAngle' values
            engine->periodicFastCallback();
        }
    }
 
    /**
     * For fuel we schedule start of injection based on trigger angle, and then inject for
     * specified duration of time
     */
    handleFuel(edgeTimestamp, currentPhase, nextPhase);
 
    engine->module<TriggerScheduler>()->scheduleEventsUntilNextTriggerTooth(
        rpm, edgeTimestamp, currentPhase, nextPhase);
 
    /**
     * For spark we schedule both start of coil charge and actual spark based on trigger angle
     */
    onTriggerEventSparkLogic(rpm, edgeTimestamp, currentPhase, nextPhase);
}
 
#endif /* EFI_ENGINE_CONTROL */