FuelLevelFunc Class Reference

#include <fuel_level_func.h>

Collaboration diagram for FuelLevelFunc:

Public Member Functions
	FuelLevelFunc ()
SensorResult	convert (float inputValue)

Private Member Functions
float	getFuelLevelAlpha () const
float	filterFuelValue (float value)
void	updateFilteredValue (float value)

Private Attributes
std::optional< float >	m_filteredValue
Timer	m_fuelLevelTimer

Static Private Attributes
static constexpr float	MIN_FUEL_LEVEL_UPDATE_PERIOD_SEC

Detailed Description

Definition at line 9 of file fuel_level_func.h.

Constructor & Destructor Documentation

FuelLevelFunc()

FuelLevelFunc::FuelLevelFunc ( )

inline

Definition at line 11 of file fuel_level_func.h.

                    : m_filteredValue() {
    }

Member Function Documentation

convert()

SensorResult FuelLevelFunc::convert

(

float

inputValue

)

Definition at line 15 of file fuel_level_func.cpp.

                                                            {
    if (std::isnan(inputVoltage)) {
        criticalError("temp error FuelLevelFunc NaN input");
        m_filteredValue.reset();
        return UnexpectedCode::Unknown;
#if EFI_PROD_CODE && HW_HELLEN
  } else if (isBoardWithPowerManagement() && !hellenEnPinStateChange.hasElapsedMs(200)) {
    // todo: can we accomplish same reset by AdcSubscription::ResetFilters?
        m_filteredValue.reset();
        return UnexpectedCode::Unknown;
#endif // HW_HELLEN
    } else if (inputVoltage < engineConfiguration->fuelLevelLowThresholdVoltage) {
        m_filteredValue.reset();
        return UnexpectedCode::Low;
    } else if (engineConfiguration->fuelLevelHighThresholdVoltage < inputVoltage) {
        m_filteredValue.reset();
        return UnexpectedCode::High;
    } else {
        const float filteredVoltage = filterFuelValue(inputVoltage);
        const float fuelLevel = interpolate2d(filteredVoltage, config->fuelLevelBins, config->fuelLevelValues);
        return fuelLevel;
    }
}

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filterFuelValue()

float FuelLevelFunc::filterFuelValue ( float  value )

private

Definition at line 44 of file fuel_level_func.cpp.

                                                             {
    if (m_filteredValue.has_value()) {
        if (m_fuelLevelTimer.hasElapsedSec(maxF(
                engineConfiguration->fuelLevelUpdatePeriodSec,
                MIN_FUEL_LEVEL_UPDATE_PERIOD_SEC
        ))) {
            const float prevFilteredValue = m_filteredValue.value();
            const float diff = inputVoltage - prevFilteredValue;
            updateFilteredValue(prevFilteredValue + getFuelLevelAlpha() * diff);
        }
    } else {
        updateFilteredValue(inputVoltage);
    }
static bool isFirst = true;
  if (isFirst) {
    isFirst = false;
      efiPrintf("[temp] first %f", m_filteredValue.value());
  }
    return m_filteredValue.value();
}

Referenced by convert().

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getFuelLevelAlpha()

float FuelLevelFunc::getFuelLevelAlpha ( ) const

private

Definition at line 39 of file fuel_level_func.cpp.

                                             {
    const float configuredAlpha = engineConfiguration->fuelLevelAveragingAlpha;
    return (0.0f < configuredAlpha ? configuredAlpha : engine_configuration_defaults::FUEL_LEVEL_AVERAGING_ALPHA);
}

Referenced by filterFuelValue().

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updateFilteredValue()

void FuelLevelFunc::updateFilteredValue ( float  value )

private

Definition at line 65 of file fuel_level_func.cpp.

                                                                   {
    m_filteredValue = filteredVoltage;
    m_fuelLevelTimer.reset();
}

Referenced by filterFuelValue().

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Field Documentation

m_filteredValue

std::optional<float> FuelLevelFunc::m_filteredValue

private

Definition at line 22 of file fuel_level_func.h.

Referenced by convert(), filterFuelValue(), and updateFilteredValue().

m_fuelLevelTimer

Timer FuelLevelFunc::m_fuelLevelTimer

private

Definition at line 23 of file fuel_level_func.h.

Referenced by filterFuelValue(), and updateFilteredValue().

MIN_FUEL_LEVEL_UPDATE_PERIOD_SEC

constexpr float FuelLevelFunc::MIN_FUEL_LEVEL_UPDATE_PERIOD_SEC

staticconstexprprivate

Initial value:

=
        engine_configuration_defaults::FUEL_LEVEL_UPDATE_PERIOD_SEC

Definition at line 19 of file fuel_level_func.h.

Referenced by filterFuelValue().

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The documentation for this class was generated from the following files:

• controllers/sensors/converters/fuel_level_func.h
• controllers/sensors/converters/fuel_level_func.cpp