mirror of https://github.com/rusefi/rusefi.git
93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
/**
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* @author Andrey Belomutskiy, (c) 2012-2020
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*
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* EGO Exhaust Gas Oxygen, also known as AFR Air/Fuel Ratio :)
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*
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* rusEfi has three options for wideband:
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* 1) integration with external widebands using liner analog signal wire
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* 2) 8-point interpolation curve to emulate a wide-band with a narrow-band sensor.
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* 3) CJ125 internal wideband controller is known to work with both 4.2 and 4.9
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*
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*/
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#include "pch.h"
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#include "cyclic_buffer.h"
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bool hasAfrSensor() {
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if (engineConfiguration->enableAemXSeries || engineConfiguration->enableInnovateLC2) {
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return true;
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}
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return isAdcChannelValid(engineConfiguration->afr.hwChannel);
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}
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extern float InnovateLC2AFR;
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float getAfr(SensorType type) {
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#if EFI_AUX_SERIAL
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if (engineConfiguration->enableInnovateLC2)
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return InnovateLC2AFR;
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#endif
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afr_sensor_s * sensor = &engineConfiguration->afr;
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if (!isAdcChannelValid(type == SensorType::Lambda1 ? engineConfiguration->afr.hwChannel : engineConfiguration->afr.hwChannel2)) {
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return 0;
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}
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float volts = getVoltageDivided("ego", type == SensorType::Lambda1 ? sensor->hwChannel : sensor->hwChannel2);
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return interpolateMsg("AFR", sensor->v1, sensor->value1, sensor->v2, sensor->value2, volts)
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+ engineConfiguration->egoValueShift;
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}
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// this method is only used for canned tunes now! User-facing selection is defined in tunerstudio.template.ini using settingSelector
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static void initEgoSensor(afr_sensor_s *sensor, ego_sensor_e type) {
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switch (type) {
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case ES_BPSX_D1:
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/**
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* This decodes BPSX D1 Wideband Controller analog signal
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*/
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sensor->v1 = 0;
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sensor->value1 = 9;
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sensor->v2 = 5;
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sensor->value2 = 19;
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break;
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case ES_Innovate_MTX_L:
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sensor->v1 = 0;
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sensor->value1 = 7.35;
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sensor->v2 = 5;
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sensor->value2 = 22.39;
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break;
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case ES_14Point7_Free:
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sensor->v1 = 0;
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sensor->value1 = 9.996;
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sensor->v2 = 5;
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sensor->value2 = 19.992;
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break;
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// technically 14Point7 and PLX use the same scale
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case ES_PLX:
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sensor->v1 = 0;
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sensor->value1 = 10;
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sensor->v2 = 5;
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sensor->value2 = 20;
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break;
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case ES_AEM:
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sensor->v1 = 0.5;
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sensor->value1 = 8.5;
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sensor->v2 = 4.5;
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sensor->value2 = 18;
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break;
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default:
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firmwareError(ObdCode::CUSTOM_EGO_TYPE, "Unexpected EGO %d", type);
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break;
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}
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}
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void setEgoSensor(ego_sensor_e type) {
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engineConfiguration->afr_type = type;
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initEgoSensor(&engineConfiguration->afr, type);
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}
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