map_averaging.h File Reference

Detailed Description

Date

Dec 11, 2013

Author

Andrey Belomutskiy, (c) 2012-2020

Definition in file map_averaging.h.

Data Structures
struct	mapSampler
class	MapAverager
class	MapAveragingModule

Functions
void	mapAveragingAdcCallback (float instantVoltage)
MapAverager &	getMapAvg (size_t idx)
float	filterMapValue (float value)
void	startAveraging (struct mapSampler *s)

Function Documentation

filterMapValue()

float filterMapValue

(

float

value

)

Definition at line 99 of file map_averaging.cpp.

                                  {
  expAverage.setSmoothingFactor(engineConfiguration->mapExpAverageAlpha);
  return expAverage.initOrAverage(value);
}

Referenced by MapAverager::stop().

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getMapAvg()

MapAverager & getMapAvg

(

size_t

idx

)

Definition at line 28 of file init_map.cpp.

                                                 {
  // May 2025: cylinderBankIndex is always zero, second MAP sensor feature is not finished
    return cylinderBankIndex == 0 ? fastMapSensor : fastMapSensor2;
}

Referenced by mapAveragingAdcCallback(), and startAveraging().

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mapAveragingAdcCallback()

void mapAveragingAdcCallback

(

float

instantVoltage

)

This method is invoked from ADC callback.

Note

This method is invoked OFTEN, this method is a potential bottleneck - the implementation should be as fast as possible

Definition at line 140 of file map_averaging.cpp.

                                                   {
    efiAssertVoid(ObdCode::CUSTOM_ERR_6650, hasLotsOfRemainingStack(), "lowstck#9a");
 
    SensorResult mapResult = getMapAvg(currentMapAverager).submit(instantVoltage);
 
    if (!mapResult) {
        // hopefully this warning is not too much CPU consumption for fast ADC callback
        warning(ObdCode::CUSTOM_INSTANT_MAP_DECODING, "Invalid MAP at %f", instantVoltage);
        engine->outputChannels.isMapValid = false;
    } else {
        engine->outputChannels.isMapValid = true;
    }
 
#if EFI_TUNER_STUDIO
    float instantMap = mapResult.value_or(0);
    engine->outputChannels.instantMAPValue = instantMap;
#endif // EFI_TUNER_STUDIO
}

Referenced by onFastAdcComplete().

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startAveraging()

void startAveraging

(

struct mapSampler *

s

)

Definition at line 56 of file map_averaging.cpp.

                                   {
    if (!engine->engineState.mapAveragingDuration) {
        // Zero duration means the engine wasn't spinning or something, abort
        return;
    }
    efiAssertVoid(ObdCode::CUSTOM_ERR_6649, hasLotsOfRemainingStack(), "lowstck#9");
 
    // TODO: set currentMapAverager based on cylinder bank
    auto& averager = getMapAvg(currentMapAverager);
    averager.start(s->cylinderNumber);
 
    mapAveragingPin.setHigh();
    engine->outputChannels.isMapAveraging = true;
 
    scheduleByAngle(&s->timer, getTimeNowNt(), engine->engineState.mapAveragingDuration,
        action_s::make<endAveraging>(&averager));
}

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