gc_generic.cpp

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#include "pch.h"
 
#include "math.h"
#include "gc_generic.h"
 
#if EFI_TCU
GenericGearController genericGearController;
 
GenericGearController::GenericGearController() {
}
 
void GenericGearController::init() {
    for (size_t i = 0; i < efi::size(engineConfiguration->tcu_rangeInput); i++) {
        if (isBrainPinValid(engineConfiguration->tcu_rangeInput[i])) {
            efiSetPadMode("Range Input", engineConfiguration->tcu_rangeInput[i], getInputMode(engineConfiguration->tcu_rangeInputMode[i]));
        }
    }
 
    GearControllerBase::init();
}
 
SensorType GenericGearController::getAnalogSensorType(int zeroBasedSensorIndex) {
    return static_cast<SensorType>(zeroBasedSensorIndex + static_cast<int>(SensorType::RangeInput1));
}
 
bool GenericGearController::isNearest(float value, int pinIndex, float* rangeStates) {
    float distance = fabs(rangeStates[pinIndex] - value);
    for (int i = 1; i <= TCU_RANGE_COUNT; i++) {
        float pinDistance = fabs(getRangeStateArray(i)[pinIndex] - value);
        if (pinDistance < distance) {
            return false;
        }
    }
    return true;
}
 
void GenericGearController::update() {
    SelectedGear gear = SelectedGear::Invalid;
    // Loop through possible range states
    // 1 based because 0 is SelectedGear::Invalid
    for (int i = 1; i <= TCU_RANGE_COUNT; i++) {
        float *rangeStates = getRangeStateArray(i);
        // Loop through inputs
        for (size_t p = 0; p < efi::size(engineConfiguration->tcu_rangeInput); p++) {
            float cellState = rangeStates[p];
            // We allow the user to configure either a digital input or an analog input for each pin,
            //  so we need to check which is valid.
            if (isAdcChannelValid(engineConfiguration->tcu_rangeAnalogInput[p])) {
                float pinState = Sensor::getOrZero(getAnalogSensorType(p));
                if (isNearest(pinState, p, rangeStates)) {
                    // Set the gear to the one we're checking, and continue to the next pin
                    gear = static_cast<SelectedGear>(i);
                } else {
                    // This possibility doesn't match, set to invalid
                    gear = SelectedGear::Invalid;
                }
            } else if (isBrainPinValid(engineConfiguration->tcu_rangeInput[p])) {
                // If we've locked out this range with 3 in a cell
                if (cellState == 3) {
                    gear = SelectedGear::Invalid;
                    break;
                }
                bool pinState = efiReadPin(engineConfiguration->tcu_rangeInput[p]);
                // If the pin doesn't matter, or if it matches the cellState
                if (cellState == 2 || (pinState && cellState == 1) || (!pinState && cellState == 0)) {
                    // Set the gear to the one we're checking, and continue to the next pin
                    gear = static_cast<SelectedGear>(i);
                } else {
                    // This possibility doesn't match, set to invalid
                    gear = SelectedGear::Invalid;
                }
            }
        }
        // If we didn't find it, try the next range
        if (gear == SelectedGear::Invalid) {
            continue;
        // We found a match
        } else {
            break;
        }
    }
    if (gear != SelectedGear::Invalid) {
        switch (gear) {
        case SelectedGear::Manual3 :
            setDesiredGear(GEAR_3);
            break;
        case SelectedGear::Manual2 :
            setDesiredGear(GEAR_2);
            break;
        case SelectedGear::Manual1 :
            setDesiredGear(GEAR_1);
            break;
        case SelectedGear::Reverse :
            setDesiredGear(REVERSE);
            break;
        case SelectedGear::Park :
        case SelectedGear::Neutral :
            setDesiredGear(NEUTRAL);
            break;
        case SelectedGear::ManualPlus :
            // Only allow manual shift once per 500 ms,
            // and if the selected range was Manual prior to this update
            if (!shiftTimer.hasElapsedMs(500) || lastRange != SelectedGear::Manual) {
                break;
            }
            shiftTimer.reset();
            switch (getDesiredGear()) {
            case GEAR_1 :
                setDesiredGear(GEAR_2);
                break;
            case GEAR_2 :
                setDesiredGear(GEAR_3);
                break;
            case GEAR_3 :
                setDesiredGear(GEAR_4);
                break;
            default:
                break;
            }
            break;
        case SelectedGear::ManualMinus :
            // Only allow manual shift once per 500 ms,
            // and if the selected range was Manual prior to this update
            if (!shiftTimer.hasElapsedMs(500) || lastRange != SelectedGear::Manual) {
                break;
            }
            shiftTimer.reset();
            switch (getDesiredGear()) {
            case GEAR_2 :
                setDesiredGear(GEAR_1);
                break;
            case GEAR_3 :
                setDesiredGear(GEAR_2);
                break;
            case GEAR_4 :
                setDesiredGear(GEAR_3);
                break;
            default:
                break;
            }
            break;
        case SelectedGear::Drive :
            // If the gear selector is in drive, let AutomaticGearController,
            // which this class inherits from, decide what gear the transmission should be in.
            AutomaticGearController::update();
            return;
        default:
            break;
        }
 
        lastRange = gear;
    }
 
    GearControllerBase::update();
}
 
GenericGearController* getGenericGearController() {
    return &genericGearController;
}
#endif // EFI_TCU