mirror of https://github.com/rusefi/rusefi.git
66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
/**
|
|
* @file trigger_input_adc.h
|
|
* @brief Position sensor hardware layer, Using ADC and software comparator
|
|
*
|
|
* @date Jan 27, 2020
|
|
* @author andreika <prometheus.pcb@gmail.com>
|
|
* @author Andrey Belomutskiy, (c) 2012-2020
|
|
*/
|
|
|
|
#pragma once
|
|
#include "global.h"
|
|
#include "trigger_input.h"
|
|
#include "adc_inputs.h"
|
|
|
|
class TriggerAdcDetector {
|
|
public:
|
|
void init();
|
|
void reset();
|
|
|
|
void digitalCallback(efitick_t stamp, bool isPrimary, bool rise);
|
|
void analogCallback(efitick_t stamp, triggerAdcSample_t value);
|
|
|
|
void setWeakSignal(bool isWeak);
|
|
|
|
public:
|
|
triggerAdcSample_t adcDefaultThreshold;
|
|
triggerAdcSample_t adcMinThreshold;
|
|
triggerAdcSample_t adcMaxThreshold;
|
|
|
|
float triggerInputDividerCoefficient;
|
|
|
|
float triggerAdcITermCoef = 1600.0f;
|
|
float triggerAdcITermMin = 3.125e-8f; // corresponds to rpm=25
|
|
|
|
int transitionCooldown = 5;
|
|
|
|
int analogToDigitalTransitionCnt;
|
|
int digitalToAnalogTransitionCnt;
|
|
|
|
triggerAdcMode_t curAdcMode = TRIGGER_ADC_NONE;
|
|
float adcThreshold = adcDefaultThreshold;
|
|
float triggerAdcITerm = triggerAdcITermMin;
|
|
|
|
// these thresholds allow to switch from ADC mode (low-rpm) to EXTI mode (fast-rpm), indicating the clamping of the signal
|
|
triggerAdcSample_t switchingThresholdLow = 0, switchingThresholdHigh = 0;
|
|
efidur_t minDeltaTimeForStableAdcDetectionNt = 0;
|
|
efidur_t stampCorrectionForAdc = 0;
|
|
int switchingCnt = 0, switchingTeethCnt = 0;
|
|
int prevValue = 0; // not set
|
|
efitick_t prevStamp = 0;
|
|
|
|
// we need to distinguish between weak and strong signals because of different SNR and thresholds.
|
|
bool isSignalWeak = true;
|
|
int zeroThreshold = 0;
|
|
|
|
// the 'center' of the signal is variable, so we need to adjust the thresholds.
|
|
int minDeltaThresholdWeakSignal = 0, minDeltaThresholdStrongSignal = 0;
|
|
|
|
// this is the number of measurements while we store the counter before we reset to 'isSignalWeak'
|
|
int minDeltaThresholdCntPos = 0, minDeltaThresholdCntNeg = 0;
|
|
int integralSum = 0;
|
|
int transitionCooldownCnt = 0;
|
|
|
|
int modeSwitchCnt = 0;
|
|
};
|