264 lines
8.1 KiB
C++
264 lines
8.1 KiB
C++
/**
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* @file trigger_emulator_algo.cpp
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*
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* This file is about producing real electrical signals which emulate trigger signal based on
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* a known TriggerWaveform.
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*
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* Historically this implementation was implemented based on PwmConfig which is maybe not the
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* best way to implement it. (todo: why is not the best way?)
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*
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* A newer implementation of pretty much the same thing is TriggerStimulatorHelper
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* todo: one emulator should be enough! another one should be eliminated
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*
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* @date Mar 3, 2014
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* @author Andrey Belomutskiy, (c) 2012-2020
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*/
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#include "pch.h"
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int getPreviousIndex(const int currentIndex, const int size) {
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return (currentIndex + size - 1) % size;
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}
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bool needEvent(const int currentIndex, const MultiChannelStateSequence & mcss, int channelIndex) {
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int prevIndex = getPreviousIndex(currentIndex, mcss.phaseCount);
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pin_state_t previousValue = mcss.getChannelState(channelIndex, /*phaseIndex*/prevIndex);
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pin_state_t currentValue = mcss.getChannelState(channelIndex, /*phaseIndex*/currentIndex);
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return previousValue != currentValue;
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}
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#if EFI_EMULATE_POSITION_SENSORS
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#if !EFI_SHAFT_POSITION_INPUT
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fail("EFI_SHAFT_POSITION_INPUT required to have EFI_EMULATE_POSITION_SENSORS")
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#endif
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#include "trigger_emulator_algo.h"
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#include "trigger_central.h"
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#include "trigger_simulator.h"
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TriggerEmulatorHelper::TriggerEmulatorHelper() {
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}
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static OutputPin emulatorOutputs[PWM_PHASE_MAX_WAVE_PER_PWM];
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void TriggerEmulatorHelper::handleEmulatorCallback(const MultiChannelStateSequence& multiChannelStateSequence, int stateIndex) {
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efitick_t stamp = getTimeNowNt();
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// todo: code duplication with TriggerStimulatorHelper::feedSimulatedEvent?
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#if EFI_SHAFT_POSITION_INPUT
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for (size_t i = 0; i < PWM_PHASE_MAX_WAVE_PER_PWM; i++) {
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if (needEvent(stateIndex, multiChannelStateSequence, i)) {
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bool isRise = TriggerValue::RISE == multiChannelStateSequence.getChannelState(/*phaseIndex*/i, stateIndex);
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isRise ^= (i == 0 && engineConfiguration->invertPrimaryTriggerSignal);
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isRise ^= (i == 1 && engineConfiguration->invertSecondaryTriggerSignal);
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handleShaftSignal(i, isRise, stamp);
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}
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}
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#endif // EFI_SHAFT_POSITION_INPUT
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}
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// same is used for either self or external trigger simulation
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PwmConfig triggerEmulatorSignal;
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static int atTriggerVersion = 0;
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/**
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* todo: why is this method NOT reciprocal to getCrankDivider?!
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* todo: oh this method has only one usage? there must me another very similar method!
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*/
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static float getRpmMultiplier(operation_mode_e mode) {
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if (mode == FOUR_STROKE_THREE_TIMES_CRANK_SENSOR) {
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return SYMMETRICAL_THREE_TIMES_CRANK_SENSOR_DIVIDER / 2;
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} else if (mode == FOUR_STROKE_SYMMETRICAL_CRANK_SENSOR) {
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return SYMMETRICAL_CRANK_SENSOR_DIVIDER / 2;
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} else if (mode == FOUR_STROKE_TWELVE_TIMES_CRANK_SENSOR) {
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return SYMMETRICAL_TWELVE_TIMES_CRANK_SENSOR_DIVIDER / 2;
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} else if (mode == FOUR_STROKE_CAM_SENSOR) {
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return 0.5;
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} else if (mode == FOUR_STROKE_CRANK_SENSOR) {
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// unit test coverage still runs if the value below is changed to '2' not a great sign!
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return 1;
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}
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return 1;
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}
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void setTriggerEmulatorRPM(int rpm) {
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engineConfiguration->triggerSimulatorRpm = rpm;
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/**
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* All we need to do here is to change the periodMs
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* togglePwmState() would see that the periodMs has changed and act accordingly
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*/
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if (rpm == 0) {
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triggerEmulatorSignal.setFrequency(NAN);
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} else {
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float rpmM = getRpmMultiplier(getEngineRotationState()->getOperationMode());
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float rPerSecond = rpm * rpmM / 60.0; // per minute converted to per second
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triggerEmulatorSignal.setFrequency(rPerSecond);
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}
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engine->resetEngineSnifferIfInTestMode();
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efiPrintf("Emulating position sensor(s). RPM=%d", rpm);
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}
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static void updateTriggerWaveformIfNeeded(PwmConfig *state) {
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if (atTriggerVersion < engine->triggerCentral.triggerShape.version) {
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atTriggerVersion = engine->triggerCentral.triggerShape.version;
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efiPrintf("Stimulator: updating trigger shape: %d/%d %d", atTriggerVersion,
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engine->getGlobalConfigurationVersion(), getTimeNowMs());
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TriggerWaveform *s = &engine->triggerCentral.triggerShape;
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copyPwmParameters(state, &s->wave);
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state->safe.periodNt = -1; // this would cause loop re-initialization
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}
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}
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static TriggerEmulatorHelper helper;
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static bool hasStimPins = false;
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static bool hasInitTriggerEmulator = false;
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# if !EFI_UNIT_TEST
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static void emulatorApplyPinState(int stateIndex, PwmConfig *state) /* pwm_gen_callback */ {
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assertStackVoid("emulator", ObdCode::STACK_USAGE_MISC, EXPECTED_REMAINING_STACK);
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if (engine->triggerCentral.directSelfStimulation) {
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/**
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* this callback would invoke the input signal handlers directly
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*/
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helper.handleEmulatorCallback(
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*state->multiChannelStateSequence,
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stateIndex);
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}
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#if EFI_PROD_CODE
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// Only set pins if they're configured - no need to waste the cycles otherwise
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else if (hasStimPins) {
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applyPinState(stateIndex, state);
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}
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#endif /* EFI_PROD_CODE */
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}
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static bool hackVvtSim = false;
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static TriggerWaveform * getTriggerForEmulation() {
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#if EFI_SIMULATOR
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if (hackVvtSim) {
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static TriggerWaveform mShape;
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trigger_config_s triggerType;
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triggerType.type = trigger_type_e::TT_MAZDA_MIATA_NA;
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mShape.initializeTriggerWaveform(FOUR_STROKE_CAM_SENSOR, triggerType);
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return &mShape;
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}
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#endif
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return &engine->triggerCentral.triggerShape;
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}
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static void startSimulatedTriggerSignal() {
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// No need to start more than once
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if (hasInitTriggerEmulator) {
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return;
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}
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TriggerWaveform *s = getTriggerForEmulation();
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setTriggerEmulatorRPM(engineConfiguration->triggerSimulatorRpm);
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triggerEmulatorSignal.weComplexInit("position sensor",
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&engine->executor,
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&s->wave,
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updateTriggerWaveformIfNeeded, (pwm_gen_callback*)emulatorApplyPinState);
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hasInitTriggerEmulator = true;
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}
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// self-stimulation
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// see below for trigger output generator
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void enableTriggerStimulator(bool incGlobalConfiguration) {
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startSimulatedTriggerSignal();
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engine->triggerCentral.directSelfStimulation = true;
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engine->rpmCalculator.Register();
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if (incGlobalConfiguration) {
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incrementGlobalConfigurationVersion("trgSim");
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}
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}
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// start generating trigger signal on physical outputs
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// similar but different from self-stimulation
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void enableExternalTriggerStimulator() {
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startSimulatedTriggerSignal();
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engine->triggerCentral.directSelfStimulation = false;
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incrementGlobalConfigurationVersion("extTrg");
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}
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void disableTriggerStimulator() {
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engine->triggerCentral.directSelfStimulation = false;
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triggerEmulatorSignal.stop();
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hasInitTriggerEmulator = false;
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incrementGlobalConfigurationVersion("disTrg");
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}
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void onConfigurationChangeRpmEmulatorCallback(engine_configuration_s *previousConfiguration) {
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if (engineConfiguration->triggerSimulatorRpm ==
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previousConfiguration->triggerSimulatorRpm) {
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return;
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}
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setTriggerEmulatorRPM(engineConfiguration->triggerSimulatorRpm);
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}
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static void hackVvtSimulation() {
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disableTriggerStimulator();
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hackVvtSim = true;
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enableTriggerStimulator();
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}
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void initTriggerEmulator() {
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efiPrintf("Emulating %s", getEngine_type_e(engineConfiguration->engineType));
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startTriggerEmulatorPins();
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addConsoleActionI(CMD_RPM, setTriggerEmulatorRPM);
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#if 0
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hackVvtSimulation();
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#endif
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addConsoleAction("sim_mitsu", hackVvtSimulation);
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}
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#endif /* EFI_UNIT_TEST */
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void startTriggerEmulatorPins() {
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hasStimPins = false;
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for (size_t i = 0; i < efi::size(emulatorOutputs); i++) {
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triggerEmulatorSignal.outputPins[i] = &emulatorOutputs[i];
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brain_pin_e pin = engineConfiguration->triggerSimulatorPins[i];
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// Only bother trying to set output pins if they're configured
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if (isBrainPinValid(pin)) {
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hasStimPins = true;
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}
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#if EFI_PROD_CODE
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if (isConfigurationChanged(triggerSimulatorPins[i])) {
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triggerEmulatorSignal.outputPins[i]->initPin("Trigger emulator", pin,
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engineConfiguration->triggerSimulatorPinModes[i]);
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}
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#endif // EFI_PROD_CODE
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}
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}
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void stopTriggerEmulatorPins() {
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#if EFI_PROD_CODE
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for (size_t i = 0; i < efi::size(emulatorOutputs); i++) {
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if (isConfigurationChanged(triggerSimulatorPins[i])) {
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triggerEmulatorSignal.outputPins[i]->deInit();
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}
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}
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#endif // EFI_PROD_CODE
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}
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#endif /* EFI_EMULATE_POSITION_SENSORS */
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