engine.cpp

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/**
 * @file    engine.cpp
 *
 *
 * This might be a http://en.wikipedia.org/wiki/God_object but that's best way I can
 * express myself in C/C++. I am open for suggestions :)
 *
 * @date May 21, 2014
 * @author Andrey Belomutskiy, (c) 2012-2020
 */
 
#include "pch.h"
 
#include "trigger_central.h"
#include "fuel_math.h"
#include "advance_map.h"
#include "speed_density.h"
#include "advance_map.h"
#include "init.h"
 
#include "rusefi_wideband.h"
#include "aux_valves.h"
#include "map_averaging.h"
#include "perf_trace.h"
#include "backup_ram.h"
#include "idle_thread.h"
#include "idle_hardware.h"
#include "gppwm.h"
#include "tachometer.h"
#include "speedometer.h"
#include "dynoview.h"
#include "boost_control.h"
#include "fan_control.h"
#include "ac_control.h"
#include "vr_pwm.h"
#include "max3185x.h"
#if EFI_MC33816
 #include "mc33816.h"
#endif // EFI_MC33816
 
#include "bench_test.h"
 
#if EFI_PROD_CODE
#include "trigger_emulator_algo.h"
#endif /* EFI_PROD_CODE */
 
#if (BOARD_TLE8888_COUNT > 0)
#include "gpio/tle8888.h"
#endif
 
#if EFI_ENGINE_SNIFFER
#include "engine_sniffer.h"
extern int waveChartUsedSize;
extern WaveChart waveChart;
#endif /* EFI_ENGINE_SNIFFER */
 
void Engine::resetEngineSnifferIfInTestMode() {
#if EFI_ENGINE_SNIFFER
    if (isFunctionalTestMode) {
        // TODO: what is the exact reasoning for the exact engine sniffer pause time I wonder
        waveChart.pauseEngineSnifferUntilNt = getTimeNowNt() + MS2NT(300);
        waveChart.reset();
    }
#endif /* EFI_ENGINE_SNIFFER */
}
 
/**
 * VVT decoding delegates to universal trigger decoder. Here we map vvt_mode_e into corresponding trigger_type_e
 */
trigger_type_e getVvtTriggerType(vvt_mode_e vvtMode) {
    switch (vvtMode) {
    case VVT_INACTIVE:
        return trigger_type_e::TT_HALF_MOON;
    case VVT_TOYOTA_3_TOOTH:
        return trigger_type_e::TT_VVT_TOYOTA_3_TOOTH;
    case VVT_MIATA_NB:
        return trigger_type_e::TT_VVT_MIATA_NB;
    case VVT_BOSCH_QUICK_START:
        return trigger_type_e::TT_VVT_BOSCH_QUICK_START;
    case VVT_HONDA_K_EXHAUST:
        return trigger_type_e::TT_HONDA_K_CAM_4_1;
    case VVT_HONDA_K_INTAKE:
    case VVT_SINGLE_TOOTH:
    case VVT_MAP_V_TWIN:
        return trigger_type_e::TT_HALF_MOON;
    case VVT_FORD_ST170:
        return trigger_type_e::TT_FORD_ST170;
    case VVT_BARRA_3_PLUS_1:
        return trigger_type_e::TT_VVT_BARRA_3_PLUS_1;
    case VVT_FORD_COYOTE:
        return trigger_type_e::TT_VVT_FORD_COYOTE;
    case VVT_DEV:
        return trigger_type_e::TT_DEV;
    case VVT_MAZDA_SKYACTIV:
        return trigger_type_e::TT_VVT_MAZDA_SKYACTIV;
    case VVT_MAZDA_L:
        return trigger_type_e::TT_VVT_MAZDA_L;
    case VVT_NISSAN_VQ:
        return trigger_type_e::TT_VVT_NISSAN_VQ35;
    case VVT_TOYOTA_4_1:
        return trigger_type_e::TT_VVT_TOYOTA_4_1;
    case VVT_MITSUBISHI_4G69:
        return trigger_type_e::TT_VVT_MITSUBISHI_4G69;
    case VVT_MITSUBISHI_3A92:
        return trigger_type_e::TT_VVT_MITSUBISHI_3A92;
    case VVT_MITSUBISHI_6G72:
        return trigger_type_e::TT_VVT_MITSU_6G72;
    case VVT_HONDA_CBR_600:
        return trigger_type_e::TT_HONDA_CBR_600;
    case VVT_MITSUBISHI_6G75:
    case VVT_NISSAN_MR:
        return trigger_type_e::TT_NISSAN_MR18_CAM_VVT;
    case VVT_MITSUBISHI_4G9x:
        return trigger_type_e::TT_MITSU_4G9x_CAM;
    case VVT_MITSUBISHI_4G63:
        return trigger_type_e::TT_MITSU_4G63_CAM;
    case VVT_HR12DDR_IN:
        return trigger_type_e::TT_NISSAN_HR_CAM_IN;
    default:
        criticalError("Broken VVT mode maybe corrupted calibration %d: %s", vvtMode, getVvt_mode_e(vvtMode));
        return trigger_type_e::TT_HALF_MOON; // we have to return something for the sake of -Werror=return-type
    }
}
 
void Engine::updateTriggerConfiguration() {
 
 
#if EFI_ENGINE_CONTROL && EFI_SHAFT_POSITION_INPUT
    // we have a confusing threading model so some synchronization would not hurt
    chibios_rt::CriticalSectionLocker csl;
 
    engine->triggerCentral.applyShapesConfiguration();
 
 
    if (!engine->triggerCentral.triggerShape.shapeDefinitionError) {
        prepareOutputSignals();
    }
#endif /* EFI_ENGINE_CONTROL && EFI_SHAFT_POSITION_INPUT */
}
 
void Engine::periodicSlowCallback() {
    ScopePerf perf(PE::EnginePeriodicSlowCallback);
 
#if EFI_CAN_SUPPORT
  if (engineConfiguration->suppressWboWorkaround7048) {
    static Timer canBusWboSetIndex;
    if (canBusWboSetIndex.getElapsedSeconds() > 1) {
      canBusWboSetIndex.reset();
      setWidebandOffset(3);
    }
  }
#endif // EFI_CAN_SUPPORT
 
#if EFI_SHAFT_POSITION_INPUT
    // Re-read config in case it's changed
    triggerCentral.primaryTriggerConfiguration.update();
    for (int camIndex = 0;camIndex < CAMS_PER_BANK;camIndex++) {
        triggerCentral.vvtTriggerConfiguration[camIndex].update();
    }
 
  getEngineState()->heaterControlEnabled = engineConfiguration->forceO2Heating || engine->rpmCalculator.isRunning();
    enginePins.o2heater.setValue(getEngineState()->heaterControlEnabled);
    enginePins.starterRelayDisable.setValue(Sensor::getOrZero(SensorType::Rpm) < engineConfiguration->cranking.rpm);
#endif // EFI_SHAFT_POSITION_INPUT
 
    efiWatchdog();
    updateSlowSensors();
    checkShutdown();
 
    module<TpsAccelEnrichment>()->onNewValue(Sensor::getOrZero(SensorType::Tps1));
 
    updateVrThresholdPwm();
 
    updateGppwm();
 
    engine->engineModules.apply_all([](auto & m) { m.onSlowCallback(); });
 
#if (BOARD_TLE8888_COUNT > 0)
    tle8888startup();
#endif
 
#if EFI_DYNO_VIEW
    updateDynoView();
#endif
 
    slowCallBackWasInvoked = true;
 
#if EFI_PROD_CODE
    void baroLps25Update();
    baroLps25Update();
#endif // EFI_PROD_CODE
}
 
/**
 * We are executing these heavy (logarithm) methods from outside the trigger callbacks for performance reasons.
 * See also periodicFastCallback
 */
void Engine::updateSlowSensors() {
    updateSwitchInputs();
 
#if EFI_SHAFT_POSITION_INPUT
    float rpm = Sensor::getOrZero(SensorType::Rpm);
    triggerCentral.isEngineSnifferEnabled = rpm < engineConfiguration->engineSnifferRpmThreshold;
    getEngineState()->sensorChartMode = rpm < engineConfiguration->sensorSnifferRpmThreshold ? engineConfiguration->sensorChartMode : SC_OFF;
#endif // EFI_SHAFT_POSITION_INPUT
}
 
bool getClutchDownState() {
#if EFI_GPIO_HARDWARE
    if (isBrainPinValid(engineConfiguration->clutchDownPin)) {
        return engineConfiguration->clutchDownPinInverted ^ efiReadPin(engineConfiguration->clutchDownPin);
    }
#endif // EFI_GPIO_HARDWARE
    // todo: boolean sensors should leverage sensor framework #6342
    return engine->engineState.lua.clutchDownState;
}
 
static bool getClutchUpState() {
#if EFI_GPIO_HARDWARE
    if (isBrainPinValid(engineConfiguration->clutchUpPin)) {
        return engineConfiguration->clutchUpPinInverted ^ efiReadPin(engineConfiguration->clutchUpPin);
    }
#endif // EFI_GPIO_HARDWARE
    // todo: boolean sensors should leverage sensor framework #6342
    return engine->engineState.lua.clutchUpState;
}
 
bool getBrakePedalState() {
#if EFI_GPIO_HARDWARE
    if (isBrainPinValid(engineConfiguration->brakePedalPin)) {
        return engineConfiguration->brakePedalPinInverted ^ efiReadPin(engineConfiguration->brakePedalPin);
    }
#endif // EFI_GPIO_HARDWARE
    // todo: boolean sensors should leverage sensor framework #6342
    return engine->engineState.lua.brakePedalState;
}
 
 
void Engine::updateSwitchInputs() {
    // this value is not used yet
  engine->engineState.clutchDownState = getClutchDownState();
    engine->clutchUpSwitchedState.update(getClutchUpState());
    engine->brakePedalSwitchedState.update(getBrakePedalState());
#if EFI_GPIO_HARDWARE
    {
        bool currentState;
        if (hasAcToggle()) {
            currentState = getAcToggle();
#ifdef EFI_KLINE
        } else if (engineConfiguration->hondaK) {
extern bool kAcRequestState;
            currentState = kAcRequestState;
#endif // EFI_KLINE
        } else {
            currentState = engine->engineState.lua.acRequestState;
        }
        AcController & acController = engine->module<AcController>().unmock();
        if (engine->acButtonSwitchedState.update(currentState)) {
            acController.timeSinceStateChange.reset();
        }
    }
 
    pokeAuxDigital();
 
#endif // EFI_GPIO_HARDWARE
}
 
Engine::Engine()
    : clutchUpSwitchedState(&engineState.clutchUpState),
    brakePedalSwitchedState(&engineState.brakePedalState),
    acButtonSwitchedState(&module<AcController>().unmock().acButtonState)
 
#if EFI_LAUNCH_CONTROL
 
    , softSparkLimiter(false), hardSparkLimiter(true)
 
#if EFI_ANTILAG_SYSTEM
//  , ALSsoftSparkLimiter(false)
#endif /* EFI_ANTILAG_SYSTEM */
 
#endif // EFI_LAUNCH_CONTROL
{
    reset();
}
 
int Engine::getGlobalConfigurationVersion(void) const {
    return globalConfigurationVersion;
}
 
void Engine::reset() {
    /**
     * it's important for wrapAngle() that engineCycle field never has zero
     */
    engineState.engineCycle = getEngineCycle(FOUR_STROKE_CRANK_SENSOR);
    resetLua();
}
 
void Engine::resetLua() {
    // todo: https://github.com/rusefi/rusefi/issues/4308
    engineState.lua = {};
    engineState.lua.fuelAdd = 0;
    engineState.lua.fuelMult = 1;
    engineState.lua.luaDisableEtb = false;
    engineState.lua.luaIgnCut = false;
    engineState.lua.luaFuelCut = false;
    engineState.lua.disableDecelerationFuelCutOff = false;
#if EFI_BOOST_CONTROL
    module<BoostController>().unmock().resetLua();
#endif // EFI_BOOST_CONTROL
    ignitionState.luaTimingAdd = 0;
    ignitionState.luaTimingMult = 1;
#if EFI_IDLE_CONTROL
    module<IdleController>().unmock().luaAdd = 0;
#endif // EFI_IDLE_CONTROL
}
 
/**
 * Here we have a bunch of stuff which should invoked after configuration change
 * so that we can prepare some helper structures
 */
void Engine::preCalculate() {
#if EFI_TUNER_STUDIO
    // we take 2 bytes of crc32, no idea if it's right to call it crc16 or not
    // we have a hack here - we rely on the fact that engineMake is the first of three relevant fields
    engine->outputChannels.engineMakeCodeNameCrc16 = crc32(engineConfiguration->engineMake, 3 * VEHICLE_INFO_SIZE);
 
    engine->outputChannels.tuneCrc16 = crc32(config, sizeof(persistent_config_s));
#endif /* EFI_TUNER_STUDIO */
}
 
#if EFI_SHAFT_POSITION_INPUT
void Engine::OnTriggerStateProperState(efitick_t nowNt) {
    rpmCalculator.setSpinningUp(nowNt);
}
 
void Engine::OnTriggerSynchronizationLost() {
    // Needed for early instant-RPM detection
    rpmCalculator.setStopSpinning();
 
    triggerCentral.triggerState.resetState();
    triggerCentral.instantRpm.resetInstantRpm();
 
    for (size_t i = 0; i < efi::size(triggerCentral.vvtState); i++) {
        for (size_t j = 0; j < efi::size(triggerCentral.vvtState[0]); j++) {
            triggerCentral.vvtState[i][j].resetState();
        }
    }
}
 
void Engine::OnTriggerSynchronization(bool wasSynchronized, bool isDecodingError) {
    // TODO: this logic probably shouldn't be part of engine.cpp
 
    // We only care about trigger shape once we have synchronized trigger. Anything could happen
    // during first revolution and it's fine
    if (wasSynchronized) {
        enginePins.triggerDecoderErrorPin.setValue(isDecodingError);
 
        // 'triggerStateListener is not null' means we are running a real engine and now just preparing trigger shape
        // that's a bit of a hack, a sweet OOP solution would be a real callback or at least 'needDecodingErrorLogic' method?
        if (isDecodingError) {
#if EFI_PROD_CODE
            if (engineConfiguration->verboseTriggerSynchDetails || (triggerCentral.triggerState.someSortOfTriggerError() && !engineConfiguration->silentTriggerError)) {
                efiPrintf("error: synchronizationPoint @ index %lu expected %d/%d got %d/%d",
                        triggerCentral.triggerState.currentCycle.current_index,
                        triggerCentral.triggerShape.getExpectedEventCount(TriggerWheel::T_PRIMARY),
                        triggerCentral.triggerShape.getExpectedEventCount(TriggerWheel::T_SECONDARY),
                        triggerCentral.triggerState.currentCycle.eventCount[0],
                        triggerCentral.triggerState.currentCycle.eventCount[1]);
            }
#endif /* EFI_PROD_CODE */
        }
 
        engine->triggerCentral.triggerErrorDetection.add(isDecodingError);
    }
 
}
#endif
 
void Engine::injectEngineReferences() {
#if EFI_SHAFT_POSITION_INPUT
    triggerCentral.primaryTriggerConfiguration.update();
    for (int camIndex = 0;camIndex < CAMS_PER_BANK;camIndex++) {
        triggerCentral.vvtTriggerConfiguration[camIndex].update();
    }
#endif // EFI_SHAFT_POSITION_INPUT
}
 
void Engine::setConfig() {
#if !EFI_UNIT_TEST
// huh should this be happy?  static_assert(config != nullptr);
#endif
    efi::clear(config);
 
    injectEngineReferences();
}
 
/**
 * This code asserts that we do not have unexpected gaps in time flow with the exception of internal flash burn.
 */
static void assertTimeIsLinear() {
#if ! EFI_UNIT_TEST
    static efitimems_t mostRecentMs = 0;
    efitimems_t msNow = getTimeNowMs();
    if (engineConfiguration->watchOutForLinearTime && engine->configBurnTimer.hasElapsedSec(5)) {
        if (mostRecentMs != 0) {
            efitimems_t gapInMs = msNow - mostRecentMs;
            // todo: lower gapInMs threshold?
            if (gapInMs > 200) {
                firmwareError(ObdCode::RUNTIME_CRITICAL_WATCH_DOG_SECONDS, "gap in time: mostRecentMs %lumS, now=%lumS, gap=%lumS",
                    mostRecentMs, msNow, gapInMs);
            }
        }
    }
    mostRecentMs = msNow;
#endif
}
 
void Engine::efiWatchdog() {
    assertTimeIsLinear();
    if (isRunningPwmTest)
        return;
 
#if EFI_ENGINE_CONTROL && EFI_SHAFT_POSITION_INPUT
    if (module<PrimeController>()->isPriming() || triggerCentral.engineMovedRecently()) {
        // do not invoke check in priming or if engine moved recently, no need to assert safe pin state.
        return;
    }
 
    if (!triggerCentral.isSpinningJustForWatchdog) {
        if (!isRunningBenchTest() && enginePins.stopPins()) {
            // todo: make this a firmwareError assuming functional tests would run
            warning(ObdCode::CUSTOM_ERR_2ND_WATCHDOG, "Some pins were turned off by 2nd pass watchdog");
        }
        return;
    }
 
    /**
     * todo: better watch dog implementation should be implemented - see
     * http://sourceforge.net/p/rusefi/tickets/96/
     */
    triggerCentral.isSpinningJustForWatchdog = false;
    onEngineHasStopped();
#endif // EFI_ENGINE_CONTROL && EFI_SHAFT_POSITION_INPUT
}
 
void Engine::onEngineHasStopped() {
#if EFI_ENGINE_CONTROL
    ignitionEvents.isReady = false;
#endif // EFI_ENGINE_CONTROL
 
#if EFI_PROD_CODE || EFI_SIMULATOR
    efiPrintf("Engine has stopped spinning.");
#endif
 
    // this invocation should be the last layer of defence in terms of making sure injectors/coils are not active
    enginePins.stopPins();
}
 
void Engine::checkShutdown() {
#if EFI_MAIN_RELAY_CONTROL
    // if we are already in the "ignition_on" mode, then do nothing
/* this logic is not alive
    if (ignitionOnTimeNt > 0) {
        return;
    }
todo: move to shutdown_controller.cpp
*/
 
    // here we are in the shutdown (the ignition is off) or initial mode (after the firmware fresh start)
/* this needs work or tests
    const efitick_t engineStopWaitTimeoutUs = 500000LL; // 0.5 sec
    // in shutdown mode, we need a small cooldown time between the ignition off and on
todo: move to shutdown_controller.cpp
    if (stopEngineRequestTimeNt == 0 || (getTimeNowNt() - stopEngineRequestTimeNt) > US2NT(engineStopWaitTimeoutUs)) {
        // if the ignition key is turned on again,
        // we cancel the shutdown mode, but only if all shutdown procedures are complete
        const float vBattThresholdOn = 8.0f;
        // we fallback into zero instead of VBAT_FALLBACK_VALUE because it's not safe to false-trigger the "ignition on" event,
        // and we want to turn on the main relay only when 100% sure.
        if ((Sensor::getOrZero(SensorType::BatteryVoltage) > vBattThresholdOn) && !isInShutdownMode()) {
            ignitionOnTimeNt = getTimeNowNt();
            efiPrintf("Ignition voltage detected!");
            if (stopEngineRequestTimeNt != 0) {
                efiPrintf("Cancel the engine shutdown!");
                stopEngineRequestTimeNt = 0;
            }
        }
    }
*/
#endif /* EFI_MAIN_RELAY_CONTROL */
}
 
bool Engine::isInShutdownMode() const {
    // TODO: this logic is currently broken
#if 0 && EFI_MAIN_RELAY_CONTROL && EFI_PROD_CODE
    // if we are in "ignition_on" mode and not in shutdown mode
    if (stopEngineRequestTimeNt == 0 && ignitionOnTimeNt > 0) {
        const float vBattThresholdOff = 5.0f;
        // start the shutdown process if the ignition voltage dropped low
        if (Sensor::get(SensorType::BatteryVoltage).value_or(VBAT_FALLBACK_VALUE) <= vBattThresholdOff) {
            scheduleStopEngine();
        }
    }
 
    // we are not in the shutdown mode?
    if (stopEngineRequestTimeNt == 0) {
        return false;
    }
 
    const efitick_t turnOffWaitTimeoutNt = NT_PER_SECOND;
    // We don't want any transients to step in, so we wait at least 1 second whatever happens.
    // Also it's good to give the stepper motor some time to start moving to the initial position (or parking)
    if ((getTimeNowNt() - stopEngineRequestTimeNt) < turnOffWaitTimeoutNt)
        return true;
 
    const efitick_t engineSpinningWaitTimeoutNt = 5 * NT_PER_SECOND;
    // The engine is still spinning! Give it some time to stop (but wait no more than 5 secs)
    if (isSpinning && (getTimeNowNt() - stopEngineRequestTimeNt) < engineSpinningWaitTimeoutNt)
        return true;
 
    // The idle motor valve is still moving! Give it some time to park (but wait no more than 10 secs)
    // Usually it can move to the initial 'cranking' position or zero 'parking' position.
    const efitick_t idleMotorWaitTimeoutNt = 10 * NT_PER_SECOND;
    if (isIdleMotorBusy() && (getTimeNowNt() - stopEngineRequestTimeNt) < idleMotorWaitTimeoutNt)
        return true;
#endif /* EFI_MAIN_RELAY_CONTROL */
    return false;
}
 
bool Engine::isMainRelayEnabled() const {
#if EFI_MAIN_RELAY_CONTROL
    return enginePins.mainRelay.getLogicValue();
#else
    // if no main relay control, we assume it's always turned on
    return true;
#endif /* EFI_MAIN_RELAY_CONTROL */
}
 
injection_mode_e getCurrentInjectionMode() {
    return getEngineRotationState()->isCranking() ? engineConfiguration->crankingInjectionMode : engineConfiguration->injectionMode;
}
 
/**
 * The idea of this method is to execute all heavy calculations in a lower-priority thread,
 * so that trigger event handler/IO scheduler tasks are faster.
 */
void Engine::periodicFastCallback() {
    ScopePerf pc(PE::EnginePeriodicFastCallback);
 
#if EFI_MAP_AVERAGING
    refreshMapAveragingPreCalc();
#endif
 
    engineState.periodicFastCallback();
 
    tachUpdate();
    speedoUpdate();
 
    engineModules.apply_all([](auto & m) { m.onFastCallback(); });
}
 
EngineRotationState * getEngineRotationState() {
    return &engine->rpmCalculator;
}
 
EngineState * getEngineState() {
    return &engine->engineState;
}
 
TunerStudioOutputChannels *getTunerStudioOutputChannels() {
    return &engine->outputChannels;
}
 
Scheduler *getScheduler() {
    return &engine->scheduler;
}
 
#if EFI_SHAFT_POSITION_INPUT
TriggerCentral * getTriggerCentral() {
    return &engine->triggerCentral;
}
#endif // EFI_SHAFT_POSITION_INPUT
 
#if EFI_ENGINE_CONTROL
LimpManager * getLimpManager() {
    return &engine->module<LimpManager>().unmock();
}
 
FuelSchedule *getFuelSchedule() {
    return &engine->injectionEvents;
}
 
IgnitionEventList *getIgnitionEvents() {
    return &engine->ignitionEvents;
}
#endif // EFI_ENGINE_CONTROL