mirror of https://github.com/rusefi/rusefi.git
43 lines
1.5 KiB
C++
43 lines
1.5 KiB
C++
#include "pch.h"
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#include "main_relay.h"
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void MainRelayController::onSlowCallback() {
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#if EFI_MAIN_RELAY_CONTROL
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#if defined(IGN_KEY_DIVIDER)
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if (isAdcChannelValid(engineConfiguration->ignKeyAdcChannel)) {
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hasIgnitionVoltage = Sensor::getOrZero(SensorType::IgnKeyVoltage) > 5;
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} else
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#endif // IGN_KEY_DIVIDER
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if (engineConfiguration->ignitionKeyDigitalPin != Gpio::Unassigned) {
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// separate digital input pin just for main relay logic since it's preferred to read voltage from main relay
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// key-on is usually a bit smaller voltage than main relay but sometimes even 1v off!
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hasIgnitionVoltage = efiReadPin(engineConfiguration->ignitionKeyDigitalPin);
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} else {
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hasIgnitionVoltage = Sensor::getOrZero(SensorType::BatteryVoltage) > 5;
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}
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if (hasIgnitionVoltage) {
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m_lastIgnitionTime.reset();
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}
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// Query whether any engine modules want to keep the lights on
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delayedShutoffRequested = engine->engineModules.aggregate([](auto& m, bool prev) { return m.needsDelayedShutoff() | prev; }, false);
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// TODO: delayed shutoff timeout?
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mainRelayState = hasIgnitionVoltage | delayedShutoffRequested;
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#else // not EFI_MAIN_RELAY_CONTROL
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mainRelayState = true;
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#endif
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enginePins.mainRelay.setValue("mr", mainRelayState);
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}
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bool MainRelayController::needsDelayedShutoff() {
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// Prevent main relay from turning off if we had ignition voltage in the past 1 second
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// This avoids accidentally killing the car during a transient, for example
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// right when the starter is engaged.
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return !m_lastIgnitionTime.hasElapsedSec(1);
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}
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