FlexSensor Class Reference

#include <flex_sensor.h>

Collaboration diagram for FlexSensor:

Public Member Functions
	FlexSensor (efidur_t timeoutPeriod)
void	Register (bool withTempSensor)
void	unregister ()
void	callback (efitick_t nowNt, bool value)
void	debug ()

Private Attributes
FunctionalSensor	flexSensor
StoredValueSensor	flexFuelTemp
FlexConverter	converter
Biquad	flexTempFilter
Timer	flexFreq
Timer	flexPulse
bool	gotRising = false
int	lowFlexCallbackCounter = 0
int	flexCallbackCounter = 0
float	frequency
float	pulseWidthUs
efitick_t	latestCallbackTime

Detailed Description

Definition at line 37 of file flex_sensor.h.

Constructor & Destructor Documentation

FlexSensor()

FlexSensor::FlexSensor ( efidur_t  timeoutPeriod )

inline

Definition at line 39 of file flex_sensor.h.

        : flexSensor(SensorType::FuelEthanolPercent, timeoutPeriod)
        , flexFuelTemp(SensorType::FuelTemperature, timeoutPeriod)
    {
        // 0.01 means filter bandwidth of ~1hz with ~100hz sensor
        flexTempFilter.configureLowpass(1, 0.01f);
        flexSensor.setFunction(converter);
    }

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Member Function Documentation

callback()

void FlexSensor::callback	(	efitick_t	nowNt,
		bool	value
	)

Definition at line 8 of file flex_sensor.cpp.

                                                     {
    latestCallbackTime = nowNt;
    flexCallbackCounter++;
    if (value) {
        if (gotRising) {
            frequency = 1 / flexFreq.getElapsedSecondsAndReset(nowNt);
            flexSensor.postRawValue(frequency, nowNt);
        } else {
            flexFreq.reset(nowNt);
        }
 
        // Start timing pulse width on rising edge
        flexPulse.reset(nowNt);
        // got rising edge
        gotRising = true;
    } else {
        lowFlexCallbackCounter++;
        if (gotRising) {
            // End pulse timing on falling edge
            pulseWidthUs = flexPulse.getElapsedUs(nowNt);
 
            if (pulseWidthUs < 900) {
                flexFuelTemp.invalidate(UnexpectedCode::Low);
                warning(ObdCode::CUSTOM_FLEX_LOW, "flex low %f", pulseWidthUs);
            } else if (pulseWidthUs > 5100) {
                flexFuelTemp.invalidate(UnexpectedCode::High);
                warning(ObdCode::CUSTOM_FLEX_HIGH, "flex high %f", pulseWidthUs);
            } else {
                // -40C = 1000us
                // 125C = 5000us
                float tempC = interpolateClamped(1000, -40, 5000, 125, pulseWidthUs);
                tempC = flexTempFilter.filter(tempC);
                flexFuelTemp.setValidValue(tempC, nowNt);
            }
        }
    }
#if EFI_PROD_CODE
    // TODO: confusing output channel name!
    engine->outputChannels.rawFlexFreq = flexCallbackCounter;
#endif // EFI_PROD_CODE
}

Referenced by flexExtiCallback().

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debug()

void FlexSensor::debug

(

)

Definition at line 50 of file flex_sensor.cpp.

                       {
    efiPrintf("flex counter %d", flexCallbackCounter);
    efiPrintf("lowFlexCallbackCounter counter %d", lowFlexCallbackCounter);
    efiPrintf("flex freq %f", frequency);
    efiPrintf("pulseWidthUs %f", pulseWidthUs);
    efiPrintf("latestCallbackTime %lld", latestCallbackTime);
}

Referenced by initFlexSensor().

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Register()

void FlexSensor::Register

(

bool

withTempSensor

)

Definition at line 58 of file flex_sensor.cpp.

                                             {
    flexSensor.Register();
 
    if (withTempSensor) {
        flexFuelTemp.Register();
    }
}

Referenced by initFlexSensor().

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unregister()

void FlexSensor::unregister

(

)

Definition at line 66 of file flex_sensor.cpp.

                            {
    flexSensor.unregister();
    flexFuelTemp.unregister();
}

Referenced by deInitFlexSensor().

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Field Documentation

converter

FlexConverter FlexSensor::converter

private

Definition at line 55 of file flex_sensor.h.

Referenced by FlexSensor().

flexCallbackCounter

int FlexSensor::flexCallbackCounter = 0

private

Definition at line 64 of file flex_sensor.h.

Referenced by callback(), and debug().

flexFreq

Timer FlexSensor::flexFreq

private

Definition at line 59 of file flex_sensor.h.

Referenced by callback().

flexFuelTemp

StoredValueSensor FlexSensor::flexFuelTemp

private

Definition at line 54 of file flex_sensor.h.

Referenced by callback(), Register(), and unregister().

flexPulse

Timer FlexSensor::flexPulse

private

Definition at line 59 of file flex_sensor.h.

Referenced by callback().

flexSensor

FunctionalSensor FlexSensor::flexSensor

private

Definition at line 53 of file flex_sensor.h.

Referenced by callback(), FlexSensor(), Register(), and unregister().

flexTempFilter

Biquad FlexSensor::flexTempFilter

private

Definition at line 57 of file flex_sensor.h.

Referenced by callback(), and FlexSensor().

frequency

float FlexSensor::frequency

private

Definition at line 66 of file flex_sensor.h.

Referenced by callback(), and debug().

gotRising

bool FlexSensor::gotRising = false

private

Definition at line 61 of file flex_sensor.h.

Referenced by callback().

latestCallbackTime

efitick_t FlexSensor::latestCallbackTime

private

Definition at line 68 of file flex_sensor.h.

Referenced by callback(), and debug().

lowFlexCallbackCounter

int FlexSensor::lowFlexCallbackCounter = 0

private

Definition at line 63 of file flex_sensor.h.

Referenced by callback(), and debug().

pulseWidthUs

float FlexSensor::pulseWidthUs

private

Definition at line 67 of file flex_sensor.h.

Referenced by callback(), and debug().

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

• controllers/sensors/flex_sensor.h
• controllers/sensors/flex_sensor.cpp