map.cpp

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/**
 * @file map.cpp
 *
 * See also map_averaging.cpp
 *
 * @author Andrey Belomutskiy, (c) 2012-2020
 */
#include "pch.h"
 
#if EFI_ANALOG_SENSORS
 
/**
 * This function checks if Baro/MAP sensor value is inside of expected range
 * @return unchanged mapKPa parameter or NaN
 */
static float validateBaroMap(float mapKPa) {
    // Highest interstate is the Eisenhower Tunnel at 11158 feet -> 66 kpa
    // Lowest point is the Dead Sea, -1411 feet -> 106 kpa
    if (std::isnan(mapKPa) || mapKPa > 110 || mapKPa < 60) {
        warning(ObdCode::OBD_Barometric_Press_Circ, "Invalid start-up baro pressure = %.2fkPa", mapKPa);
        return NAN;
    }
    return mapKPa;
}
 
#if EFI_PROD_CODE
 
static void printMAPInfo() {
#if EFI_ANALOG_SENSORS
    efiPrintf("instant value=%.2fkPa", Sensor::getOrZero(SensorType::Map));
 
#if EFI_MAP_AVERAGING && defined (MODULE_MAP_AVERAGING)
    efiPrintf("map type=%d/%s MAP=%.2fkPa", engineConfiguration->map.sensor.type,
            getAir_pressure_sensor_type_e(engineConfiguration->map.sensor.type),
            Sensor::getOrZero(SensorType::Map));
#endif // EFI_MAP_AVERAGING
 
    adc_channel_e mapAdc = engineConfiguration->map.sensor.hwChannel;
    char pinNameBuffer[16];
 
    efiPrintf("MAP %.2fv @%s",
            adcGetRawVoltage("mapinfo", mapAdc).value_or(0),
            getPinNameByAdcChannel("map", mapAdc, pinNameBuffer, sizeof(pinNameBuffer)));
    if (engineConfiguration->map.sensor.type == MT_CUSTOM) {
        efiPrintf("at %.2fv=%.2f at %.2fv=%.2f",
                engineConfiguration->mapLowValueVoltage,
                engineConfiguration->map.sensor.lowValue,
                engineConfiguration->mapHighValueVoltage,
                engineConfiguration->map.sensor.highValue);
    }
 
    if (Sensor::hasSensor(SensorType::BarometricPressure)) {
        efiPrintf("baro type=%d value=%.2f", engineConfiguration->baroSensor.type, Sensor::get(SensorType::BarometricPressure).value_or(-1));
        if (engineConfiguration->baroSensor.type == MT_CUSTOM) {
            efiPrintf("min=%.2f@%.2f max=%.2f@%.2f",
                    engineConfiguration->baroSensor.lowValue,
                    engineConfiguration->mapLowValueVoltage,
                    engineConfiguration->baroSensor.highValue,
                    engineConfiguration->mapHighValueVoltage);
        }
    }
#endif /* EFI_ANALOG_SENSORS */
}
#endif /* EFI_PROD_CODE */
 
void initMapDecoder() {
    if (engineConfiguration->useFixedBaroCorrFromMap) {
        // Read initial MAP sensor value and store it for Baro correction.
        float storedInitialBaroPressure = Sensor::get(SensorType::MapSlow).value_or(STD_ATMOSPHERE);
        efiPrintf("Get initial baro MAP pressure = %.2fkPa", storedInitialBaroPressure);
        // validate if it's within a reasonable range (the engine should not be spinning etc.)
        storedInitialBaroPressure = validateBaroMap(storedInitialBaroPressure);
        if (!std::isnan(storedInitialBaroPressure)) {
            efiPrintf("Using this fixed MAP pressure to override the baro correction!");
 
            // TODO: do literally anything other than this
            Sensor::setMockValue(SensorType::BarometricPressure, storedInitialBaroPressure);
        } else {
            efiPrintf("The baro pressure is invalid. The fixed baro correction will be disabled!");
        }
    }
 
#if EFI_PROD_CODE
    addConsoleAction("mapinfo", printMAPInfo);
#endif
}
 
#else /* EFI_ANALOG_SENSORS */
 
void initMapDecoder() {
}
 
#endif /* EFI_ANALOG_SENSORS */