2080 lines
85 KiB
C++
2080 lines
85 KiB
C++
/*
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Speeduino - Simple engine management for the Arduino Mega 2560 platform
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Copyright (C) Josh Stewart
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A full copy of the license may be found in the projects root directory
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*/
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/*
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This file contains the various crank and cam wheel decoder functions.
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Each decoder must have the following 4 functions (Where xxxx is the decoder name):
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* triggerSetup_xxx - Called once from within setup() and configures any required variables
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* triggerPri_xxxx - Called each time the primary (No. 1) crank/cam signal is triggered (Called as an interrupt, so variables must be declared volatile)
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* triggerSec_xxxx - Called each time the secondary (No. 2) crank/cam signal is triggered (Called as an interrupt, so variables must be declared volatile)
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* getRPM_xxxx - Returns the current RPM, as calculated by the decoder
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* getCrankAngle_xxxx - Returns the current crank angle, as calculated b the decoder
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And each decoder must utlise at least the following variables:
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toothLastToothTime - The time (In uS) that the last primary tooth was 'seen'
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*
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*/
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#include "decoders.h"
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static inline void addToothLogEntry(unsigned long toothTime)
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{
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//High speed tooth logging history
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toothHistory[toothHistoryIndex] = toothTime;
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if(toothHistoryIndex == (TOOTH_LOG_BUFFER-1))
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{
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if (toothLogRead)
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{
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toothHistoryIndex = 0;
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BIT_CLEAR(currentStatus.squirt, BIT_SQUIRT_TOOTHLOG1READY);
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toothLogRead = false; //The tooth log ready bit is cleared to ensure that we only get a set of concurrent values.
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}
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}
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else
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{ toothHistoryIndex++; }
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}
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/*
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As nearly all the decoders use a common method of determining RPM (The time the last full revolution took)
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A common function is simpler
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degreesOver is the number of crank degrees between tooth #1s. Some patterns have a tooth #1 every crank rev, others are every cam rev.
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*/
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//static inline uint16_t stdGetRPM(uin16_t degreesOver)
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static inline uint16_t stdGetRPM()
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{
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uint16_t tempRPM = 0;
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if( currentStatus.hasSync == true )
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{
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if( (BIT_CHECK(currentStatus.engine, BIT_ENGINE_CRANK)) && (currentStatus.startRevolutions == 0) ) { tempRPM = 0; } //Prevents crazy RPM spike when there has been less than 1 full revolution
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else
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{
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noInterrupts();
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revolutionTime = (toothOneTime - toothOneMinusOneTime); //The time in uS that one revolution would take at current speed (The time tooth 1 was last seen, minus the time it was seen prior to that)
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interrupts();
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//if(degreesOver == 720) { revolutionTime / 2; }
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tempRPM = (US_IN_MINUTE / revolutionTime); //Calc RPM based on last full revolution time (Faster as /)
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if(tempRPM >= MAX_RPM) { tempRPM = currentStatus.RPM; } //Sanity check
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}
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}
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else { tempRPM = 0; }
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return tempRPM;
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}
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/*
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* Sets the new filter time based on the current settings.
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* This ONLY works for even spaced decoders
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*/
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static inline void setFilter(unsigned long curGap)
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{
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if(configPage2.triggerFilter == 1) { triggerFilterTime = curGap >> 2; } //Lite filter level is 25% of previous gap
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else if(configPage2.triggerFilter == 2) { triggerFilterTime = curGap >> 1; } //Medium filter level is 50% of previous gap
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else if (configPage2.triggerFilter == 3) { triggerFilterTime = (curGap * 3) >> 2; } //Aggressive filter level is 75% of previous gap
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else { triggerFilterTime = 0; } //trigger filter is turned off.
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}
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/*
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This is a special case of RPM measure that is based on the time between the last 2 teeth rather than the time of the last full revolution
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This gives much more volatile reading, but is quite useful during cranking, particularly on low resolution patterns.
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It can only be used on patterns where the teeth are evently spaced
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It takes an argument of the full (COMPLETE) number of teeth per revolution. For a missing tooth wheel, this is the number if the tooth had NOT been missing (Eg 36-1 = 36)
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*/
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static inline int crankingGetRPM(byte totalTeeth)
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{
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uint16_t tempRPM = 0;
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if( (toothLastToothTime > 0) && (toothLastMinusOneToothTime > 0) )
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{
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noInterrupts();
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revolutionTime = (toothLastToothTime - toothLastMinusOneToothTime) * totalTeeth;
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interrupts();
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tempRPM = (US_IN_MINUTE / revolutionTime);
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if( tempRPM >= (configPage2.crankRPM * 400) ) { tempRPM = currentStatus.RPM; } //Sanity check. This can prevent spiking caused by noise on individual teeth. The new RPM should never be above 4x the cranking setting value (Remembering that this function is only called is the current RPM is less than the cranking setting)
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}
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return tempRPM;
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}
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/*
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Name: Missing tooth wheel
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Desc: A multi-tooth wheel with one of more 'missing' teeth. The first tooth after the missing one is considered number 1 and isthe basis for the trigger angle
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Note: This does not currently support dual wheel (ie missing tooth + single tooth on cam)
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*/
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void triggerSetup_missingTooth()
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{
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triggerToothAngle = 360 / configPage2.triggerTeeth; //The number of degrees that passes from tooth to tooth
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if(configPage2.TrigSpeed == 1) { triggerToothAngle = 720 / configPage2.triggerTeeth; } //Account for cam speed missing tooth
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triggerActualTeeth = configPage2.triggerTeeth - configPage2.triggerMissingTeeth; //The number of physical teeth on the wheel. Doing this here saves us a calculation each time in the interrupt
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triggerFilterTime = (int)(1000000 / (MAX_RPM / 60 * configPage2.triggerTeeth)); //Trigger filter time is the shortest possible time (in uS) that there can be between crank teeth (ie at max RPM). Any pulses that occur faster than this time will be disgarded as noise
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secondDerivEnabled = false;
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decoderIsSequential = false;
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checkSyncToothCount = (configPage2.triggerTeeth) >> 1; //50% of the total teeth.
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MAX_STALL_TIME = (3333UL * triggerToothAngle * (configPage2.triggerMissingTeeth + 1)); //Minimum 50rpm. (3333uS is the time per degree at 50rpm)
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}
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void triggerPri_missingTooth()
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{
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// http://www.msextra.com/forums/viewtopic.php?f=94&t=22976
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// http://www.megamanual.com/ms2/wheel.htm
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curTime = micros();
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curGap = curTime - toothLastToothTime;
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if ( curGap >= triggerFilterTime ) //Pulses should never be less than triggerFilterTime, so if they are it means a false trigger. (A 36-1 wheel at 8000pm will have triggers approx. every 200uS)
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{
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toothCurrentCount++; //Increment the tooth counter
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addToothLogEntry(curGap);
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//if(toothCurrentCount > checkSyncToothCount || currentStatus.hasSync == false)
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{
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//Begin the missing tooth detection
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//If the time between the current tooth and the last is greater than 1.5x the time between the last tooth and the tooth before that, we make the assertion that we must be at the first tooth after the gap
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if(configPage2.triggerMissingTeeth == 1) { targetGap = (3 * (toothLastToothTime - toothLastMinusOneToothTime)) >> 1; } //Multiply by 1.5 (Checks for a gap 1.5x greater than the last one) (Uses bitshift to multiply by 3 then divide by 2. Much faster than multiplying by 1.5)
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else { targetGap = ((toothLastToothTime - toothLastMinusOneToothTime)) * 2; } //Multiply by 2 (Checks for a gap 2x greater than the last one)
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if ( (curGap > targetGap) || (toothCurrentCount > triggerActualTeeth) )
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{
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if(toothCurrentCount < (triggerActualTeeth) && (currentStatus.hasSync == true) ) { currentStatus.hasSync = false; } //This occurs when we're at tooth #1, but haven't seen all the other teeth. This indicates a signal issue so we flag lost sync so this will attempt to resync on the next revolution.
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else
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{
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toothCurrentCount = 1;
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revolutionOne = !revolutionOne; //Flip sequential revolution tracker
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toothOneMinusOneTime = toothOneTime;
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toothOneTime = curTime;
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currentStatus.hasSync = true;
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currentStatus.startRevolutions++; //Counter
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triggerFilterTime = 0; //This is used to prevent a condition where serious intermitent signals (Eg someone furiously plugging the sensor wire in and out) can leave the filter in an unrecoverable state
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toothLastMinusOneToothTime = toothLastToothTime;
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toothLastToothTime = curTime;
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}
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}
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else
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{
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//Filter can only be recalc'd for the regular teeth, not the missing one.
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setFilter(curGap);
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toothLastMinusOneToothTime = toothLastToothTime;
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toothLastToothTime = curTime;
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}
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}
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//EXPERIMENTAL!
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if(configPage1.perToothIgn == true)
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{
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uint16_t crankAngle = ( (toothCurrentCount-1) * triggerToothAngle ) + configPage2.triggerAngle;
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if ( (toothCurrentCount == ignition1EndTooth) && (ignitionSchedule1.Status == RUNNING) )
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{
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IGN1_COMPARE = IGN1_COUNTER + uS_TO_TIMER_COMPARE( (ignition1EndAngle - crankAngle) * timePerDegree );
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//IGN1_COMPARE = IGN1_COUNTER + uS_TO_TIMER_COMPARE( (ignition1EndAngle - crankAngle)*my_timePerDegree - micros_compensation );
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}
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else if ( (toothCurrentCount == ignition2EndTooth) && (ignitionSchedule2.Status == RUNNING) ) { IGN2_COMPARE = IGN2_COUNTER + uS_TO_TIMER_COMPARE( (ignition2EndAngle - crankAngle) * timePerDegree ); }
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else if ( (toothCurrentCount == ignition3EndTooth) && (ignitionSchedule3.Status == RUNNING) ) { IGN3_COMPARE = IGN3_COUNTER + uS_TO_TIMER_COMPARE( (ignition3EndAngle - crankAngle) * timePerDegree ); }
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else if ( (toothCurrentCount == ignition4EndTooth) && (ignitionSchedule4.Status == RUNNING) ) { IGN4_COMPARE = IGN4_COUNTER + uS_TO_TIMER_COMPARE( (ignition4EndAngle - crankAngle) * timePerDegree ); }
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}
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}
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}
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void triggerSec_missingTooth()
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{
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//TODO: This should really have filtering enabled on the secondary input.
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revolutionOne = 1;
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}
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uint16_t getRPM_missingTooth()
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{
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uint16_t tempRPM = 0;
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if( currentStatus.RPM < (unsigned int)(configPage2.crankRPM * 100) )
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{
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if(configPage2.TrigSpeed == 1) { crankingGetRPM(configPage2.triggerTeeth/2); } //Account for cam speed
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else { tempRPM = crankingGetRPM(configPage2.triggerTeeth); }
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}
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else
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{
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if(configPage2.TrigSpeed == 1) { tempRPM = (stdGetRPM() * 2); } //Account for cam speed
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else { tempRPM = stdGetRPM(); }
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}
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return tempRPM;
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}
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int getCrankAngle_missingTooth(int timePerDegree)
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{
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//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
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unsigned long tempToothLastToothTime;
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int tempToothCurrentCount;
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bool tempRevolutionOne;
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//Grab some variables that are used in the trigger code and assign them to temp variables.
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noInterrupts();
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tempToothCurrentCount = toothCurrentCount;
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tempToothLastToothTime = toothLastToothTime;
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tempRevolutionOne = revolutionOne;
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interrupts();
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int crankAngle = ((tempToothCurrentCount - 1) * triggerToothAngle) + configPage2.triggerAngle; //Number of teeth that have passed since tooth 1, multiplied by the angle each tooth represents, plus the angle that tooth 1 is ATDC. This gives accuracy only to the nearest tooth.
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//Estimate the number of degrees travelled since the last tooth}
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long elapsedTime = (micros() - tempToothLastToothTime);
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//crankAngle += DIV_ROUND_CLOSEST(elapsedTime, timePerDegree);
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if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
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else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
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//Sequential check (simply sets whether we're on the first or 2nd revoltuion of the cycle)
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if (tempRevolutionOne) { crankAngle += 360; }
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if (crankAngle >= 720) { crankAngle -= 720; }
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else if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
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if (crankAngle < 0) { crankAngle += CRANK_ANGLE_MAX; }
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return crankAngle;
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}
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void triggerSetEndTeeth_missingTooth()
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{
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ignition1EndTooth = ( (ignition1EndAngle - configPage2.triggerAngle) / triggerToothAngle ) - 1;
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if(ignition1EndTooth > configPage2.triggerTeeth) { ignition1EndTooth -= configPage2.triggerTeeth; }
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if(ignition1EndTooth <= 0) { ignition1EndTooth -= configPage2.triggerTeeth; }
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if(ignition1EndTooth > triggerActualTeeth) { ignition1EndTooth = triggerActualTeeth; }
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ignition2EndTooth = ( (ignition2EndAngle - configPage2.triggerAngle) / triggerToothAngle ) - 1;
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if(ignition2EndTooth > configPage2.triggerTeeth) { ignition2EndTooth -= configPage2.triggerTeeth; }
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if(ignition2EndTooth <= 0) { ignition2EndTooth -= configPage2.triggerTeeth; }
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if(ignition2EndTooth > triggerActualTeeth) { ignition2EndTooth = triggerActualTeeth; }
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ignition3EndTooth = ( (ignition3EndAngle - configPage2.triggerAngle) / triggerToothAngle ) - 1;
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if(ignition3EndTooth > configPage2.triggerTeeth) { ignition3EndTooth -= configPage2.triggerTeeth; }
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if(ignition3EndTooth <= 0) { ignition3EndTooth -= configPage2.triggerTeeth; }
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if(ignition3EndTooth > triggerActualTeeth) { ignition3EndTooth = triggerActualTeeth; }
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ignition4EndTooth = ( (ignition4EndAngle - configPage2.triggerAngle) / triggerToothAngle ) - 1;
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if(ignition4EndTooth > configPage2.triggerTeeth) { ignition4EndTooth -= configPage2.triggerTeeth; }
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if(ignition4EndTooth <= 0) { ignition4EndTooth -= configPage2.triggerTeeth; }
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if(ignition4EndTooth > triggerActualTeeth) { ignition4EndTooth = triggerActualTeeth; }
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}
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/* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Name: Dual wheel
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Desc: 2 wheels located either both on the crank or with the primary on the crank and the secondary on the cam.
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Note: There can be no missing teeth on the primary wheel
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*/
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void triggerSetup_DualWheel()
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{
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triggerToothAngle = 360 / configPage2.triggerTeeth; //The number of degrees that passes from tooth to tooth
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toothCurrentCount = 255; //Default value
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triggerFilterTime = (int)(1000000 / (MAX_RPM / 60 * configPage2.triggerTeeth)); //Trigger filter time is the shortest possible time (in uS) that there can be between crank teeth (ie at max RPM). Any pulses that occur faster than this time will be disgarded as noise
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triggerSecFilterTime = (int)(1000000 / (MAX_RPM / 60 * 2)) / 2; //Same as above, but fixed at 2 teeth on the secondary input and divided by 2 (for cam speed)
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secondDerivEnabled = false;
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decoderIsSequential = true;
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MAX_STALL_TIME = (3333UL * triggerToothAngle); //Minimum 50rpm. (3333uS is the time per degree at 50rpm)
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}
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void triggerPri_DualWheel()
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{
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curTime = micros();
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curGap = curTime - toothLastToothTime;
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if ( curGap >= triggerFilterTime )
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{
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toothCurrentCount++; //Increment the tooth counter
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addToothLogEntry(curGap);
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toothLastMinusOneToothTime = toothLastToothTime;
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toothLastToothTime = curTime;
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if ( currentStatus.hasSync == true )
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{
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if ( (toothCurrentCount == 1) || (toothCurrentCount > configPage2.triggerTeeth) )
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{
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toothCurrentCount = 1;
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revolutionOne = !revolutionOne; //Flip sequential revolution tracker
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toothOneMinusOneTime = toothOneTime;
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toothOneTime = curTime;
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currentStatus.startRevolutions++; //Counter
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}
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setFilter(curGap); //Recalc the new filter value
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}
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} //TRigger filter
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}
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void triggerSec_DualWheel()
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{
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curTime2 = micros();
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curGap2 = curTime2 - toothLastSecToothTime;
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if ( curGap2 >= triggerSecFilterTime )
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{
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toothLastSecToothTime = curTime2;
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triggerSecFilterTime = curGap2 >> 2; //Set filter at 25% of the current speed
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if(currentStatus.hasSync == false)
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{
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toothLastToothTime = micros();
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toothLastMinusOneToothTime = (toothOneTime - 6000000) / configPage2.triggerTeeth; //Fixes RPM at 10rpm until a full revolution has taken place
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toothCurrentCount = configPage2.triggerTeeth;
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currentStatus.hasSync = true;
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}
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else if (configPage2.useResync == 1) { toothCurrentCount = configPage2.triggerTeeth; }
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revolutionOne = 1; //Sequential revolution reset
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} //Trigger filter
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}
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uint16_t getRPM_DualWheel()
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{
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uint16_t tempRPM = 0;
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if( currentStatus.hasSync == true )
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{
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if(currentStatus.RPM < configPage2.crankRPM) { tempRPM = crankingGetRPM(configPage2.triggerTeeth); }
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else { tempRPM = stdGetRPM(); }
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}
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return tempRPM;
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}
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int getCrankAngle_DualWheel(int timePerDegree)
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{
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//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
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unsigned long tempToothLastToothTime;
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int tempToothCurrentCount;
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bool tempRevolutionOne;
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//Grab some variables that are used in the trigger code and assign them to temp variables.
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noInterrupts();
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tempToothCurrentCount = toothCurrentCount;
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tempToothLastToothTime = toothLastToothTime;
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tempRevolutionOne = revolutionOne;
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interrupts();
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//Handle case where the secondary tooth was the last one seen
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if(tempToothCurrentCount == 0) { tempToothCurrentCount = configPage2.triggerTeeth; }
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int crankAngle = ((tempToothCurrentCount - 1) * triggerToothAngle) + configPage2.triggerAngle; //Number of teeth that have passed since tooth 1, multiplied by the angle each tooth represents, plus the angle that tooth 1 is ATDC. This gives accuracy only to the nearest tooth.
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//Estimate the number of degrees travelled since the last tooth}
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long elapsedTime = micros() - tempToothLastToothTime;
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if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
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else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
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//Sequential check (simply sets whether we're on the first or 2nd revoltuion of the cycle)
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if (tempRevolutionOne) { crankAngle += 360; }
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if (crankAngle >= 720) { crankAngle -= 720; }
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if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
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if (crankAngle < 0) { crankAngle += CRANK_ANGLE_MAX; }
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return crankAngle;
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}
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void triggerSetEndTeeth_DualWheel()
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{
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}
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/* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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Name: Basic Distributor
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Desc: Tooth equal to the number of cylinders are evenly spaced on the cam. No position sensing (Distributor is retained) so crank angle is a made up figure based purely on the first teeth to be seen
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Note: This is a very simple decoder. See http://www.megamanual.com/ms2/GM_7pinHEI.htm
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*/
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void triggerSetup_BasicDistributor()
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{
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triggerActualTeeth = configPage1.nCylinders;
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if(triggerActualTeeth == 0) { triggerActualTeeth = 1; }
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triggerToothAngle = 720 / triggerActualTeeth; //The number of degrees that passes from tooth to tooth
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triggerFilterTime = 60000000L / MAX_RPM / configPage1.nCylinders; // Minimum time required between teeth
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triggerFilterTime = triggerFilterTime / 2; //Safety margin
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secondDerivEnabled = false;
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decoderIsSequential = false;
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|
|
if(configPage1.nCylinders <= 4) { MAX_STALL_TIME = (1851UL * triggerToothAngle); }//Minimum 90rpm. (1851uS is the time per degree at 90rpm). This uses 90rpm rather than 50rpm due to the potentially very high stall time on a 4 cylinder if we wait that long.
|
|
else { MAX_STALL_TIME = (3200UL * triggerToothAngle); } //Minimum 50rpm. (3200uS is the time per degree at 50rpm).
|
|
|
|
}
|
|
|
|
void triggerPri_BasicDistributor()
|
|
{
|
|
curTime = micros();
|
|
curGap = curTime - toothLastToothTime;
|
|
if ( curGap >= triggerFilterTime )
|
|
{
|
|
if( (toothCurrentCount == triggerActualTeeth) || (currentStatus.hasSync == false) ) //Check if we're back to the beginning of a revolution
|
|
{
|
|
toothCurrentCount = 1; //Reset the counter
|
|
toothOneMinusOneTime = toothOneTime;
|
|
toothOneTime = curTime;
|
|
currentStatus.hasSync = true;
|
|
currentStatus.startRevolutions++; //Counter
|
|
}
|
|
else
|
|
{
|
|
toothCurrentCount++; //Increment the tooth counter
|
|
}
|
|
|
|
setFilter(curGap); //Recalc the new filter value
|
|
addToothLogEntry(curGap);
|
|
|
|
if ( configPage2.ignCranklock && BIT_CHECK(currentStatus.engine, BIT_ENGINE_CRANK) )
|
|
{
|
|
endCoil1Charge();
|
|
endCoil2Charge();
|
|
endCoil3Charge();
|
|
endCoil4Charge();
|
|
}
|
|
|
|
toothLastMinusOneToothTime = toothLastToothTime;
|
|
toothLastToothTime = curTime;
|
|
} //Trigger filter
|
|
}
|
|
void triggerSec_BasicDistributor() { return; } //Not required
|
|
uint16_t getRPM_BasicDistributor()
|
|
{
|
|
uint16_t tempRPM;
|
|
if( currentStatus.RPM < (unsigned int)(configPage2.crankRPM * 100) )
|
|
{ tempRPM = crankingGetRPM(triggerActualTeeth >> 1); } //crankGetRPM uses teeth per 360 degrees. As triggerActualTeeh is total teeth in 720 degrees, we divide the tooth count by 2
|
|
else
|
|
{
|
|
tempRPM = stdGetRPM() << 1;
|
|
revolutionTime = revolutionTime >> 1; //Revolution time has to be divided by 2 as otherwise it would be over 720 degrees (triggerActualTeeth = nCylinders)
|
|
} //Multiply RPM by 2 due to tracking over 720 degrees now rather than 360
|
|
|
|
return tempRPM;
|
|
|
|
}
|
|
int getCrankAngle_BasicDistributor(int timePerDegree)
|
|
{
|
|
//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
|
|
unsigned long tempToothLastToothTime;
|
|
int tempToothCurrentCount;
|
|
//Grab some variables that are used in the trigger code and assign them to temp variables.
|
|
noInterrupts();
|
|
tempToothCurrentCount = toothCurrentCount;
|
|
tempToothLastToothTime = toothLastToothTime;
|
|
interrupts();
|
|
|
|
int crankAngle = ((tempToothCurrentCount - 1) * triggerToothAngle) + configPage2.triggerAngle; //Number of teeth that have passed since tooth 1, multiplied by the angle each tooth represents, plus the angle that tooth 1 is ATDC. This gives accuracy only to the nearest tooth.
|
|
//Estimate the number of degrees travelled since the last tooth}
|
|
long elapsedTime = micros() - tempToothLastToothTime;
|
|
if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
|
|
else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
|
|
|
|
if (crankAngle >= 720) { crankAngle -= 720; }
|
|
if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
|
|
if (crankAngle < 0) { crankAngle += CRANK_ANGLE_MAX; }
|
|
|
|
return crankAngle;
|
|
}
|
|
|
|
void triggerSetEndTeeth_BasicDistributor()
|
|
{
|
|
|
|
}
|
|
|
|
/* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Name: GM7X
|
|
Desc: GM 7X trigger wheel. It has six equally spaced teeth and a seventh tooth for cylinder identification.
|
|
Note: Within the code below, the sync tooth is referred to as tooth #3 rather than tooth #7. This makes for simpler angle calculations
|
|
*/
|
|
void triggerSetup_GM7X()
|
|
{
|
|
triggerToothAngle = 360 / 6; //The number of degrees that passes from tooth to tooth
|
|
secondDerivEnabled = false;
|
|
decoderIsSequential = false;
|
|
MAX_STALL_TIME = (3333UL * triggerToothAngle); //Minimum 50rpm. (3333uS is the time per degree at 50rpm)
|
|
}
|
|
|
|
void triggerPri_GM7X()
|
|
{
|
|
lastGap = curGap;
|
|
curTime = micros();
|
|
curGap = curTime - toothLastToothTime;
|
|
toothCurrentCount++; //Increment the tooth counter
|
|
|
|
addToothLogEntry(curGap);
|
|
|
|
//
|
|
if( toothCurrentCount > 7 )
|
|
{
|
|
toothCurrentCount = 1;
|
|
toothOneMinusOneTime = toothOneTime;
|
|
toothOneTime = curTime;
|
|
|
|
toothLastMinusOneToothTime = toothLastToothTime;
|
|
toothLastToothTime = curTime;
|
|
}
|
|
else
|
|
{
|
|
targetGap = (lastGap) >> 1; //The target gap is set at half the last tooth gap
|
|
if ( curGap < targetGap) //If the gap between this tooth and the last one is less than half of the previous gap, then we are very likely at the magical 3rd tooth
|
|
{
|
|
toothCurrentCount = 3;
|
|
currentStatus.hasSync = true;
|
|
currentStatus.startRevolutions++; //Counter
|
|
}
|
|
else
|
|
{
|
|
toothLastMinusOneToothTime = toothLastToothTime;
|
|
toothLastToothTime = curTime;
|
|
}
|
|
}
|
|
}
|
|
void triggerSec_GM7X() { return; } //Not required
|
|
uint16_t getRPM_GM7X()
|
|
{
|
|
return stdGetRPM();
|
|
}
|
|
int getCrankAngle_GM7X(int timePerDegree)
|
|
{
|
|
//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
|
|
unsigned long tempToothLastToothTime;
|
|
int tempToothCurrentCount;
|
|
//Grab some variables that are used in the trigger code and assign them to temp variables.
|
|
noInterrupts();
|
|
tempToothCurrentCount = toothCurrentCount;
|
|
tempToothLastToothTime = toothLastToothTime;
|
|
interrupts();
|
|
|
|
//Check if the last tooth seen was the reference tooth (Number 3). All others can be calculated, but tooth 3 has a unique angle
|
|
int crankAngle;
|
|
if( tempToothCurrentCount < 3 )
|
|
{
|
|
crankAngle = ((tempToothCurrentCount - 1) * triggerToothAngle) + 42; //Number of teeth that have passed since tooth 1, multiplied by the angle each tooth represents, plus the angle that tooth 1 is ATDC. This gives accuracy only to the nearest tooth.
|
|
}
|
|
else if( tempToothCurrentCount == 3 )
|
|
{
|
|
crankAngle = 112;
|
|
}
|
|
else
|
|
{
|
|
crankAngle = ((tempToothCurrentCount - 2) * triggerToothAngle) + 42; //Number of teeth that have passed since tooth 1, multiplied by the angle each tooth represents, plus the angle that tooth 1 is ATDC. This gives accuracy only to the nearest tooth.
|
|
}
|
|
|
|
//Estimate the number of degrees travelled since the last tooth}
|
|
long elapsedTime = micros() - tempToothLastToothTime;
|
|
if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
|
|
else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
|
|
|
|
if (crankAngle >= 720) { crankAngle -= 720; }
|
|
if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
|
|
if (crankAngle < 0) { crankAngle += 360; }
|
|
|
|
return crankAngle;
|
|
}
|
|
|
|
void triggerSetEndTeeth_GM7X()
|
|
{
|
|
|
|
}
|
|
|
|
|
|
/* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Name: Mitsubishi 4G63 / NA/NB Miata + MX-5 / 4/2
|
|
Desc: TBA
|
|
Note: https://raw.githubusercontent.com/noisymime/speeduino/master/reference/wiki/decoders/4g63_trace.png
|
|
Tooth #1 is defined as the next crank tooth after the crank signal is HIGH when the cam signal is falling.
|
|
Tooth number one is at 355* ATDC
|
|
*/
|
|
void triggerSetup_4G63()
|
|
{
|
|
triggerToothAngle = 180; //The number of degrees that passes from tooth to tooth (primary)
|
|
toothCurrentCount = 99; //Fake tooth count represents no sync
|
|
secondDerivEnabled = false;
|
|
decoderIsSequential = true;
|
|
MAX_STALL_TIME = 366667UL; //Minimum 50rpm based on the 110 degree tooth spacing
|
|
toothLastToothTime = micros(); //Set a startup value here to avoid filter errors when starting
|
|
|
|
//Note that these angles are for every rising and falling edge
|
|
if(configPage1.nCylinders == 6)
|
|
{
|
|
// 70 / 50 for 6 cylinder applications
|
|
toothAngles[0] = 185; //
|
|
toothAngles[1] = 235; //
|
|
toothAngles[2] = 305; //
|
|
toothAngles[3] = 355; //
|
|
toothAngles[4] = 65; //
|
|
toothAngles[5] = 115; //
|
|
}
|
|
else
|
|
{
|
|
// 70 / 110 for 4 cylinder
|
|
toothAngles[0] = 355; //Falling edge of tooth #1
|
|
toothAngles[1] = 105; //Rising edge of tooth #2
|
|
toothAngles[2] = 175; //Falling edge of tooth #2
|
|
toothAngles[3] = 285; //Rising edge of tooth #1
|
|
}
|
|
/*
|
|
* https://forums.libreems.org/attachment.php?aid=34
|
|
toothAngles[0] = 715; //Falling edge of tooth #1
|
|
toothAngles[1] = 49; //Falling edge of wide cam
|
|
toothAngles[2] = 105; //Rising edge of tooth #2
|
|
toothAngles[3] = 175; //Falling edge of tooth #2
|
|
toothAngles[4] = 229; //Rising edge of narrow cam tooth (??)
|
|
toothAngles[5] = 285; //Rising edge of tooth #3
|
|
toothAngles[6] = 319; //Falling edge of narrow cam tooth
|
|
toothAngles[7] = 355; //falling edge of tooth #3
|
|
toothAngles[8] = 465; //Rising edge of tooth #4
|
|
toothAngles[9] = 535; //Falling edge of tooth #4
|
|
toothAngles[10] = 535; //Rising edge of wide cam tooth
|
|
toothAngles[11] = 645; //Rising edge of tooth #1
|
|
*/
|
|
|
|
triggerFilterTime = 1500; //10000 rpm, assuming we're triggering on both edges off the crank tooth.
|
|
triggerSecFilterTime = (int)(1000000 / (MAX_RPM / 60 * 2)) / 2; //Same as above, but fixed at 2 teeth on the secondary input and divided by 2 (for cam speed)
|
|
triggerSecFilterTime_duration = 4000;
|
|
secondaryLastToothTime = 0;
|
|
}
|
|
|
|
void triggerPri_4G63()
|
|
{
|
|
curTime = micros();
|
|
curGap = curTime - toothLastToothTime;
|
|
if ( curGap >= triggerFilterTime )
|
|
{
|
|
addToothLogEntry(curGap);
|
|
triggerFilterTime = curGap >> 2; //This only applies during non-sync conditions. If there is sync then triggerFilterTime gets changed again below with a better value.
|
|
|
|
toothLastMinusOneToothTime = toothLastToothTime;
|
|
toothLastToothTime = curTime;
|
|
|
|
toothCurrentCount++;
|
|
if( (toothCurrentCount == 1) || (toothCurrentCount > configPage1.nCylinders) ) //Trigger is on CHANGE, hence 4 pulses = 1 crank rev
|
|
{
|
|
toothCurrentCount = 1; //Reset the counter
|
|
toothOneMinusOneTime = toothOneTime;
|
|
toothOneTime = curTime;
|
|
currentStatus.hasSync = true;
|
|
currentStatus.startRevolutions++; //Counter
|
|
}
|
|
|
|
if (currentStatus.hasSync == true)
|
|
{
|
|
if ( BIT_CHECK(currentStatus.engine, BIT_ENGINE_CRANK) && configPage2.ignCranklock)
|
|
{
|
|
if( toothCurrentCount == 1 ) { endCoil1Charge(); }
|
|
else if( toothCurrentCount == 3 ) { endCoil2Charge(); }
|
|
else if( toothCurrentCount == 5 ) { endCoil3Charge(); }
|
|
}
|
|
|
|
//Whilst this is an uneven tooth pattern, if the specific angle between the last 2 teeth is specified, 1st deriv prediction can be used
|
|
if( (configPage2.triggerFilter == 1) || (currentStatus.RPM < 1400) )
|
|
{
|
|
//Lite filter
|
|
if( (toothCurrentCount == 1) || (toothCurrentCount == 3) || (toothCurrentCount == 5) )
|
|
{
|
|
triggerToothAngle = 70;
|
|
triggerFilterTime = curGap; //Trigger filter is set to whatever time it took to do 70 degrees (Next trigger is 110 degrees away)
|
|
if(configPage1.nCylinders == 6)
|
|
{
|
|
triggerFilterTime = (curGap >> 2); //Trigger filter is set to (70/4)=17.5=17 degrees (Next trigger is 50 degrees away).
|
|
}
|
|
}
|
|
else
|
|
{
|
|
triggerToothAngle = 110;
|
|
triggerFilterTime = (curGap * 3) >> 3; //Trigger filter is set to (110*3)/8=41.25=41 degrees (Next trigger is 70 degrees away).
|
|
if(configPage1.nCylinders == 6)
|
|
{
|
|
triggerToothAngle = 50;
|
|
triggerFilterTime = (curGap * 3) >> 2; //Trigger filter is set to (50*3)/4=37.5=37 degrees (Next trigger is 70 degrees away).
|
|
}
|
|
}
|
|
}
|
|
else if(configPage2.triggerFilter == 2)
|
|
{
|
|
//Medium filter level
|
|
if( (toothCurrentCount == 1) || (toothCurrentCount == 3) || (toothCurrentCount == 5) ) { triggerToothAngle = 70; triggerFilterTime = (curGap * 5) >> 2 ; } //87.5 degrees with a target of 110
|
|
else { triggerToothAngle = 110; triggerFilterTime = (curGap >> 1); } //55 degrees with a target of 70
|
|
}
|
|
else if (configPage2.triggerFilter == 3)
|
|
{
|
|
//Aggressive filter level
|
|
if( (toothCurrentCount == 1) || (toothCurrentCount == 3) || (toothCurrentCount == 5) ) { triggerToothAngle = 70; triggerFilterTime = (curGap * 11) >> 3 ; } //96.26 degrees with a target of 110
|
|
else { triggerToothAngle = 110; triggerFilterTime = (curGap * 9) >> 5; } //61.87 degrees with a target of 70
|
|
}
|
|
else { triggerFilterTime = 0; } //trigger filter is turned off.
|
|
} //Has sync
|
|
} //Filter time
|
|
|
|
}
|
|
void triggerSec_4G63()
|
|
{
|
|
//byte crankState = READ_PRI_TRIGGER();
|
|
//First filter is a duration based one to ensure the pulse was of sufficient length (time)
|
|
//if(READ_SEC_TRIGGER()) { secondaryLastToothTime1 = micros(); return; }
|
|
if(currentStatus.hasSync == true)
|
|
{
|
|
//1166 is the time taken to cross 70 degrees at 10k rpm
|
|
//if ( (micros() - secondaryLastToothTime1) < triggerSecFilterTime_duration ) { return; }
|
|
//triggerSecFilterTime_duration = (micros() - secondaryLastToothTime1) >> 1;
|
|
}
|
|
|
|
|
|
curTime2 = micros();
|
|
curGap2 = curTime2 - toothLastSecToothTime;
|
|
if ( curGap2 >= triggerSecFilterTime )
|
|
{
|
|
toothLastSecToothTime = curTime2;
|
|
|
|
triggerSecFilterTime = curGap2 >> 1; //Basic 50% filter for the secondary reading
|
|
//More aggressive options:
|
|
//62.5%:
|
|
//triggerSecFilterTime = (curGap2 * 9) >> 5;
|
|
//75%:
|
|
//triggerSecFilterTime = (curGap2 * 6) >> 3;
|
|
|
|
if(BIT_CHECK(currentStatus.engine, BIT_ENGINE_CRANK) || (currentStatus.hasSync == false) )
|
|
{
|
|
triggerFilterTime = 1500; //If this is removed, can have trouble getting sync again after the engine is turned off (but ECU not reset).
|
|
if(READ_PRI_TRIGGER() == true)// && (crankState == digitalRead(pinTrigger)))
|
|
{
|
|
toothCurrentCount = 4; //If the crank trigger is currently HIGH, it means we're on tooth #1
|
|
}
|
|
}
|
|
|
|
//if ( (micros() - secondaryLastToothTime1) < triggerSecFilterTime_duration && configPage2.useResync )
|
|
if ( configPage2.useResync == 1 )
|
|
{
|
|
triggerSecFilterTime_duration = (micros() - secondaryLastToothTime1) >> 1;
|
|
if(READ_PRI_TRIGGER() == true)// && (crankState == digitalRead(pinTrigger)))
|
|
{
|
|
toothCurrentCount = 4; //If the crank trigger is currently HIGH, it means we're on tooth #1
|
|
}
|
|
} // Use resync
|
|
} //Trigger filter
|
|
}
|
|
|
|
|
|
uint16_t getRPM_4G63()
|
|
{
|
|
uint16_t tempRPM = 0;
|
|
//During cranking, RPM is calculated 4 times per revolution, once for each rising/falling of the crank signal.
|
|
//Because these signals aren't even (Alternating 110 and 70 degrees), this needs a special function
|
|
if(currentStatus.hasSync == true)
|
|
{
|
|
if( currentStatus.RPM < (unsigned int)(configPage2.crankRPM * 100) )
|
|
{
|
|
int tempToothAngle;
|
|
unsigned long toothTime;
|
|
if( (toothLastToothTime == 0) || (toothLastMinusOneToothTime == 0) ) { tempRPM = 0; }
|
|
else
|
|
{
|
|
noInterrupts();
|
|
tempToothAngle = triggerToothAngle;
|
|
toothTime = (toothLastToothTime - toothLastMinusOneToothTime); //Note that trigger tooth angle changes between 70 and 110 depending on the last tooth that was seen
|
|
interrupts();
|
|
toothTime = toothTime * 36;
|
|
tempRPM = ((unsigned long)tempToothAngle * 6000000UL) / toothTime;
|
|
}
|
|
}
|
|
else { tempRPM = stdGetRPM(); }
|
|
}
|
|
|
|
return tempRPM;
|
|
}
|
|
|
|
int getCrankAngle_4G63(int timePerDegree)
|
|
{
|
|
int crankAngle = 0;
|
|
if(currentStatus.hasSync == true)
|
|
{
|
|
//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
|
|
unsigned long tempToothLastToothTime;
|
|
int tempToothCurrentCount;
|
|
//Grab some variables that are used in the trigger code and assign them to temp variables.
|
|
noInterrupts();
|
|
tempToothCurrentCount = toothCurrentCount;
|
|
tempToothLastToothTime = toothLastToothTime;
|
|
interrupts();
|
|
|
|
crankAngle = toothAngles[(tempToothCurrentCount - 1)] + configPage2.triggerAngle; //Perform a lookup of the fixed toothAngles array to find what the angle of the last tooth passed was.
|
|
//Estimate the number of degrees travelled since the last tooth}
|
|
|
|
unsigned long elapsedTime = micros() - tempToothLastToothTime;
|
|
if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
|
|
else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
|
|
|
|
if (crankAngle >= 720) { crankAngle -= 720; }
|
|
if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
|
|
if (crankAngle < 0) { crankAngle += 360; }
|
|
}
|
|
return crankAngle;
|
|
}
|
|
|
|
void triggerSetEndTeeth_4G63()
|
|
{
|
|
|
|
}
|
|
|
|
/* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Name: GM
|
|
Desc: TBA
|
|
Note: Useful references:
|
|
http://www.vems.hu/wiki/index.php?page=MembersPage%2FJorgenKarlsson%2FTwentyFourX
|
|
Provided that the cam signal is used, this decoder simply counts the teeth and then looks their angles up against a lookup table. The cam signal is used to determine tooth #1
|
|
*/
|
|
void triggerSetup_24X()
|
|
{
|
|
triggerToothAngle = 15; //The number of degrees that passes from tooth to tooth (primary)
|
|
toothAngles[0] = 12;
|
|
toothAngles[1] = 18;
|
|
toothAngles[2] = 33;
|
|
toothAngles[3] = 48;
|
|
toothAngles[4] = 63;
|
|
toothAngles[5] = 78;
|
|
toothAngles[6] = 102;
|
|
toothAngles[7] = 108;
|
|
toothAngles[8] = 123;
|
|
toothAngles[9] = 138;
|
|
toothAngles[10] = 162;
|
|
toothAngles[11] = 177;
|
|
toothAngles[12] = 183;
|
|
toothAngles[13] = 198;
|
|
toothAngles[14] = 222;
|
|
toothAngles[15] = 237;
|
|
toothAngles[16] = 252;
|
|
toothAngles[17] = 258;
|
|
toothAngles[18] = 282;
|
|
toothAngles[19] = 288;
|
|
toothAngles[20] = 312;
|
|
toothAngles[21] = 327;
|
|
toothAngles[22] = 342;
|
|
toothAngles[23] = 357;
|
|
|
|
MAX_STALL_TIME = (3333UL * triggerToothAngle); //Minimum 50rpm. (3333uS is the time per degree at 50rpm)
|
|
toothCurrentCount = 25; //We set the initial tooth value to be something that should never be reached. This indicates no sync
|
|
secondDerivEnabled = false;
|
|
decoderIsSequential = true;
|
|
}
|
|
|
|
void triggerPri_24X()
|
|
{
|
|
if(toothCurrentCount == 25) { currentStatus.hasSync = false; } //Indicates sync has not been achieved (Still waiting for 1 revolution of the crank to take place)
|
|
else
|
|
{
|
|
curTime = micros();
|
|
curGap = curTime - toothLastToothTime;
|
|
|
|
if(toothCurrentCount == 0)
|
|
{
|
|
toothCurrentCount = 1; //Reset the counter
|
|
toothOneMinusOneTime = toothOneTime;
|
|
toothOneTime = curTime;
|
|
currentStatus.hasSync = true;
|
|
currentStatus.startRevolutions++; //Counter
|
|
}
|
|
else
|
|
{
|
|
toothCurrentCount++; //Increment the tooth counter
|
|
}
|
|
|
|
addToothLogEntry(curGap);
|
|
|
|
toothLastToothTime = curTime;
|
|
}
|
|
}
|
|
|
|
void triggerSec_24X()
|
|
{
|
|
toothCurrentCount = 0; //All we need to do is reset the tooth count back to zero, indicating that we're at the beginning of a new revolution
|
|
return;
|
|
}
|
|
|
|
uint16_t getRPM_24X()
|
|
{
|
|
return stdGetRPM();
|
|
}
|
|
int getCrankAngle_24X(int timePerDegree)
|
|
{
|
|
//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
|
|
unsigned long tempToothLastToothTime;
|
|
int tempToothCurrentCount;
|
|
//Grab some variables that are used in the trigger code and assign them to temp variables.
|
|
noInterrupts();
|
|
tempToothCurrentCount = toothCurrentCount;
|
|
tempToothLastToothTime = toothLastToothTime;
|
|
interrupts();
|
|
|
|
int crankAngle;
|
|
if (toothCurrentCount == 0) { crankAngle = 0 + configPage2.triggerAngle; } //This is the special case to handle when the 'last tooth' seen was the cam tooth. 0 is the angle at which the crank tooth goes high (Within 360 degrees).
|
|
else { crankAngle = toothAngles[(tempToothCurrentCount - 1)] + configPage2.triggerAngle;} //Perform a lookup of the fixed toothAngles array to find what the angle of the last tooth passed was.
|
|
|
|
//Estimate the number of degrees travelled since the last tooth}
|
|
long elapsedTime = micros() - tempToothLastToothTime;
|
|
if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
|
|
else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
|
|
|
|
if (crankAngle >= 720) { crankAngle -= 720; }
|
|
if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
|
|
if (crankAngle < 0) { crankAngle += 360; }
|
|
|
|
return crankAngle;
|
|
}
|
|
|
|
void triggerSetEndTeeth_24X()
|
|
{
|
|
|
|
}
|
|
|
|
/* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Name: Jeep 2000
|
|
Desc: For '91 to 2000 6 cylinder Jeep engines
|
|
Note: Quite similar to the 24X setup. 24 crank teeth over 720 degrees, in groups of 4. Crank wheel is high for 360 crank degrees. AS we only need timing within 360 degrees, only 12 tooth angles are defined.
|
|
Tooth number 1 represents the first tooth seen after the cam signal goes high
|
|
http://speeduino.com/forum/download/file.php?id=205
|
|
*/
|
|
void triggerSetup_Jeep2000()
|
|
{
|
|
triggerToothAngle = 0; //The number of degrees that passes from tooth to tooth (primary)
|
|
toothAngles[0] = 174;
|
|
toothAngles[1] = 194;
|
|
toothAngles[2] = 214;
|
|
toothAngles[3] = 234;
|
|
toothAngles[4] = 294;
|
|
toothAngles[5] = 314;
|
|
toothAngles[6] = 334;
|
|
toothAngles[7] = 354;
|
|
toothAngles[8] = 414;
|
|
toothAngles[9] = 434;
|
|
toothAngles[10] = 454;
|
|
toothAngles[11] = 474;
|
|
|
|
MAX_STALL_TIME = (3333UL * 60); //Minimum 50rpm. (3333uS is the time per degree at 50rpm). Largest gap between teeth is 60 degrees.
|
|
toothCurrentCount = 13; //We set the initial tooth value to be something that should never be reached. This indicates no sync
|
|
secondDerivEnabled = false;
|
|
decoderIsSequential = false;
|
|
}
|
|
|
|
void triggerPri_Jeep2000()
|
|
{
|
|
if(toothCurrentCount == 13) { currentStatus.hasSync = false; } //Indicates sync has not been achieved (Still waiting for 1 revolution of the crank to take place)
|
|
else
|
|
{
|
|
curTime = micros();
|
|
curGap = curTime - toothLastToothTime;
|
|
if ( curGap >= triggerFilterTime )
|
|
{
|
|
if(toothCurrentCount == 0)
|
|
{
|
|
toothCurrentCount = 1; //Reset the counter
|
|
toothOneMinusOneTime = toothOneTime;
|
|
toothOneTime = curTime;
|
|
currentStatus.hasSync = true;
|
|
currentStatus.startRevolutions++; //Counter
|
|
}
|
|
else
|
|
{
|
|
toothCurrentCount++; //Increment the tooth counter
|
|
}
|
|
|
|
setFilter(curGap); //Recalc the new filter value
|
|
|
|
addToothLogEntry(curGap);
|
|
|
|
toothLastMinusOneToothTime = toothLastToothTime;
|
|
toothLastToothTime = curTime;
|
|
} //Trigger filter
|
|
} //Sync check
|
|
}
|
|
void triggerSec_Jeep2000()
|
|
{
|
|
toothCurrentCount = 0; //All we need to do is reset the tooth count back to zero, indicating that we're at the beginning of a new revolution
|
|
return;
|
|
}
|
|
|
|
uint16_t getRPM_Jeep2000()
|
|
{
|
|
return stdGetRPM();
|
|
}
|
|
int getCrankAngle_Jeep2000(int timePerDegree)
|
|
{
|
|
//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
|
|
unsigned long tempToothLastToothTime;
|
|
int tempToothCurrentCount;
|
|
//Grab some variables that are used in the trigger code and assign them to temp variables.
|
|
noInterrupts();
|
|
tempToothCurrentCount = toothCurrentCount;
|
|
tempToothLastToothTime = toothLastToothTime;
|
|
interrupts();
|
|
|
|
int crankAngle;
|
|
if (toothCurrentCount == 0) { crankAngle = 146 + configPage2.triggerAngle; } //This is the special case to handle when the 'last tooth' seen was the cam tooth. 146 is the angle at which the crank tooth goes high.
|
|
else { crankAngle = toothAngles[(tempToothCurrentCount - 1)] + configPage2.triggerAngle;} //Perform a lookup of the fixed toothAngles array to find what the angle of the last tooth passed was.
|
|
//Estimate the number of degrees travelled since the last tooth}
|
|
long elapsedTime = micros() - tempToothLastToothTime;
|
|
if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
|
|
else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
|
|
|
|
if (crankAngle >= 720) { crankAngle -= 720; }
|
|
if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
|
|
if (crankAngle < 0) { crankAngle += 360; }
|
|
|
|
return crankAngle;
|
|
}
|
|
|
|
void triggerSetEndTeeth_Jeep2000()
|
|
{
|
|
|
|
}
|
|
|
|
/* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Name: Audi 135
|
|
Desc: 135 teeth on the crank and 1 tooth on the cam.
|
|
Note: This is very similar to the dual wheel decoder, however due to the 135 teeth not dividing evenly into 360, only every 3rd crank tooth is used in calculating the crank angle. This effectively makes it a 45 tooth dual wheel setup
|
|
*/
|
|
void triggerSetup_Audi135()
|
|
{
|
|
triggerToothAngle = 8; //135/3 = 45, 360/45 = 8 degrees every 3 teeth
|
|
toothCurrentCount = 255; //Default value
|
|
toothSystemCount = 0;
|
|
triggerFilterTime = (unsigned long)(1000000 / (MAX_RPM / 60 * 135UL)); //Trigger filter time is the shortest possible time (in uS) that there can be between crank teeth (ie at max RPM). Any pulses that occur faster than this time will be disgarded as noise
|
|
triggerSecFilterTime = (int)(1000000 / (MAX_RPM / 60 * 2)) / 2; //Same as above, but fixed at 2 teeth on the secondary input and divided by 2 (for cam speed)
|
|
MAX_STALL_TIME = (3333UL * triggerToothAngle); //Minimum 50rpm. (3333uS is the time per degree at 50rpm)
|
|
secondDerivEnabled = false;
|
|
decoderIsSequential = true;
|
|
}
|
|
|
|
void triggerPri_Audi135()
|
|
{
|
|
curTime = micros();
|
|
curGap = curTime - toothSystemLastToothTime;
|
|
if ( curGap > triggerFilterTime )
|
|
{
|
|
toothSystemCount++;
|
|
|
|
if ( currentStatus.hasSync == false ) { toothLastToothTime = curTime; }
|
|
else
|
|
{
|
|
if ( toothSystemCount >= 3 )
|
|
{
|
|
//We only proceed for every third tooth
|
|
|
|
addToothLogEntry(curGap);
|
|
toothSystemLastToothTime = curTime;
|
|
toothSystemCount = 0;
|
|
toothCurrentCount++; //Increment the tooth counter
|
|
|
|
if ( (toothCurrentCount == 1) || (toothCurrentCount > 45) )
|
|
{
|
|
toothCurrentCount = 1;
|
|
toothOneMinusOneTime = toothOneTime;
|
|
toothOneTime = curTime;
|
|
revolutionOne = !revolutionOne;
|
|
currentStatus.startRevolutions++; //Counter
|
|
}
|
|
|
|
setFilter(curGap); //Recalc the new filter value
|
|
|
|
toothLastMinusOneToothTime = toothLastToothTime;
|
|
toothLastToothTime = curTime;
|
|
} //3rd tooth check
|
|
} // Sync check
|
|
} // Trigger filter
|
|
}
|
|
|
|
void triggerSec_Audi135()
|
|
{
|
|
/*
|
|
curTime2 = micros();
|
|
curGap2 = curTime2 - toothLastSecToothTime;
|
|
if ( curGap2 < triggerSecFilterTime ) { return; }
|
|
toothLastSecToothTime = curTime2;
|
|
*/
|
|
|
|
if( currentStatus.hasSync == false )
|
|
{
|
|
toothCurrentCount = 0;
|
|
currentStatus.hasSync = true;
|
|
toothSystemCount = 3; //Need to set this to 3 so that the next primary tooth is counted
|
|
}
|
|
else if (configPage2.useResync == 1) { toothCurrentCount = 0; toothSystemCount = 3; }
|
|
else if ( (currentStatus.startRevolutions < 100) && (toothCurrentCount != 45) ) { toothCurrentCount = 0; }
|
|
revolutionOne = 1; //Sequential revolution reset
|
|
}
|
|
|
|
uint16_t getRPM_Audi135()
|
|
{
|
|
return stdGetRPM();
|
|
}
|
|
|
|
int getCrankAngle_Audi135(int timePerDegree)
|
|
{
|
|
//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
|
|
unsigned long tempToothLastToothTime;
|
|
int tempToothCurrentCount;
|
|
bool tempRevolutionOne;
|
|
//Grab some variables that are used in the trigger code and assign them to temp variables.
|
|
noInterrupts();
|
|
tempToothCurrentCount = toothCurrentCount;
|
|
tempToothLastToothTime = toothLastToothTime;
|
|
tempRevolutionOne = revolutionOne;
|
|
interrupts();
|
|
|
|
//Handle case where the secondary tooth was the last one seen
|
|
if(tempToothCurrentCount == 0) { tempToothCurrentCount = 45; }
|
|
|
|
int crankAngle = ((tempToothCurrentCount - 1) * triggerToothAngle) + configPage2.triggerAngle; //Number of teeth that have passed since tooth 1, multiplied by the angle each tooth represents, plus the angle that tooth 1 is ATDC. This gives accuracy only to the nearest tooth.
|
|
//Estimate the number of degrees travelled since the last tooth}
|
|
long elapsedTime = micros() - tempToothLastToothTime;
|
|
if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
|
|
else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
|
|
|
|
//Sequential check (simply sets whether we're on the first or 2nd revoltuion of the cycle)
|
|
if (tempRevolutionOne) { crankAngle += 360; }
|
|
|
|
if (crankAngle >= 720) { crankAngle -= 720; }
|
|
else if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
|
|
if (crankAngle < 0) { crankAngle += CRANK_ANGLE_MAX; }
|
|
|
|
return crankAngle;
|
|
}
|
|
|
|
void triggerSetEndTeeth_Audi135()
|
|
{
|
|
|
|
}
|
|
|
|
/* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Name: Honda D17
|
|
Desc:
|
|
Note:
|
|
*/
|
|
void triggerSetup_HondaD17()
|
|
{
|
|
triggerToothAngle = 360 / 12; //The number of degrees that passes from tooth to tooth
|
|
MAX_STALL_TIME = (3333UL * triggerToothAngle); //Minimum 50rpm. (3333uS is the time per degree at 50rpm)
|
|
secondDerivEnabled = false;
|
|
decoderIsSequential = false;
|
|
}
|
|
|
|
void triggerPri_HondaD17()
|
|
{
|
|
lastGap = curGap;
|
|
curTime = micros();
|
|
curGap = curTime - toothLastToothTime;
|
|
toothCurrentCount++; //Increment the tooth counter
|
|
|
|
addToothLogEntry(curGap);
|
|
|
|
//
|
|
if( (toothCurrentCount == 13) && (currentStatus.hasSync == true) )
|
|
{
|
|
toothCurrentCount = 0;
|
|
}
|
|
else if( (toothCurrentCount == 1) && (currentStatus.hasSync == true) )
|
|
{
|
|
toothOneMinusOneTime = toothOneTime;
|
|
toothOneTime = curTime;
|
|
currentStatus.startRevolutions++; //Counter
|
|
|
|
toothLastMinusOneToothTime = toothLastToothTime;
|
|
toothLastToothTime = curTime;
|
|
}
|
|
else
|
|
{
|
|
//13th tooth
|
|
targetGap = (lastGap) >> 1; //The target gap is set at half the last tooth gap
|
|
if ( curGap < targetGap) //If the gap between this tooth and the last one is less than half of the previous gap, then we are very likely at the magical 13th tooth
|
|
{
|
|
toothCurrentCount = 0;
|
|
currentStatus.hasSync = true;
|
|
}
|
|
else
|
|
{
|
|
//The tooth times below don't get set on tooth 13(The magical 13th tooth should not be considered for any calculations that use those times)
|
|
toothLastMinusOneToothTime = toothLastToothTime;
|
|
toothLastToothTime = curTime;
|
|
}
|
|
}
|
|
|
|
}
|
|
void triggerSec_HondaD17() { return; } //The 4+1 signal on the cam is yet to be supported
|
|
uint16_t getRPM_HondaD17()
|
|
{
|
|
return stdGetRPM();
|
|
}
|
|
int getCrankAngle_HondaD17(int timePerDegree)
|
|
{
|
|
//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
|
|
unsigned long tempToothLastToothTime;
|
|
int tempToothCurrentCount;
|
|
//Grab some variables that are used in the trigger code and assign them to temp variables.
|
|
noInterrupts();
|
|
tempToothCurrentCount = toothCurrentCount;
|
|
tempToothLastToothTime = toothLastToothTime;
|
|
interrupts();
|
|
|
|
//Check if the last tooth seen was the reference tooth 13 (Number 0 here). All others can be calculated, but tooth 3 has a unique angle
|
|
int crankAngle;
|
|
if( tempToothCurrentCount == 0 )
|
|
{
|
|
crankAngle = (11 * triggerToothAngle) + configPage2.triggerAngle; //if temptoothCurrentCount is 0, the last tooth seen was the 13th one. Based on this, ignore the 13th tooth and use the 12th one as the last reference.
|
|
}
|
|
else
|
|
{
|
|
crankAngle = ((tempToothCurrentCount - 1) * triggerToothAngle) + configPage2.triggerAngle; //Number of teeth that have passed since tooth 1, multiplied by the angle each tooth represents, plus the angle that tooth 1 is ATDC. This gives accuracy only to the nearest tooth.
|
|
}
|
|
|
|
//Estimate the number of degrees travelled since the last tooth}
|
|
long elapsedTime = micros() - tempToothLastToothTime;
|
|
if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
|
|
else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
|
|
|
|
if (crankAngle >= 720) { crankAngle -= 720; }
|
|
if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
|
|
if (crankAngle < 0) { crankAngle += 360; }
|
|
|
|
return crankAngle;
|
|
}
|
|
|
|
void triggerSetEndTeeth_HondaD17()
|
|
{
|
|
|
|
}
|
|
|
|
/* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Name: Miata '99 to '05
|
|
Desc: TBA (See: http://forum.diyefi.org/viewtopic.php?f=56&t=1077)
|
|
Note: 4x 70 degree duration teeth running at cam speed. Believed to be at the same angles as the 4g63 decoder
|
|
Tooth #1 is defined as the next crank tooth after the crank signal is HIGH when the cam signal is falling.
|
|
Tooth number one is at 355* ATDC
|
|
*/
|
|
void triggerSetup_Miata9905()
|
|
{
|
|
triggerToothAngle = 90; //The number of degrees that passes from tooth to tooth (primary)
|
|
toothCurrentCount = 99; //Fake tooth count represents no sync
|
|
secondDerivEnabled = false;
|
|
decoderIsSequential = true;
|
|
|
|
//Note that these angles are for every rising and falling edge
|
|
|
|
toothAngles[0] = 350; //Falling edge of tooth #1
|
|
toothAngles[1] = 100; //Rising edge of tooth #2
|
|
toothAngles[2] = 170; //Falling edge of tooth #2
|
|
toothAngles[3] = 280; //Rising edge of tooth #1
|
|
|
|
MAX_STALL_TIME = (3333UL * triggerToothAngle); //Minimum 50rpm. (3333uS is the time per degree at 50rpm)
|
|
triggerFilterTime = 1500; //10000 rpm, assuming we're triggering on both edges off the crank tooth.
|
|
triggerSecFilterTime = (int)(1000000 / (MAX_RPM / 60 * 2)) / 2; //Same as above, but fixed at 2 teeth on the secondary input and divided by 2 (for cam speed)
|
|
}
|
|
|
|
void triggerPri_Miata9905()
|
|
{
|
|
curTime = micros();
|
|
curGap = curTime - toothLastToothTime;
|
|
if ( curGap >= triggerFilterTime )
|
|
{
|
|
toothCurrentCount++;
|
|
if( (toothCurrentCount == 1) || (toothCurrentCount == 5) ) //Trigger is on CHANGE, hence 4 pulses = 1 crank rev
|
|
{
|
|
toothCurrentCount = 1; //Reset the counter
|
|
toothOneMinusOneTime = toothOneTime;
|
|
toothOneTime = curTime;
|
|
currentStatus.hasSync = true;
|
|
currentStatus.startRevolutions++; //Counter
|
|
}
|
|
|
|
if (currentStatus.hasSync == true)
|
|
{
|
|
addToothLogEntry(curGap);
|
|
|
|
//Whilst this is an uneven tooth pattern, if the specific angle between the last 2 teeth is specified, 1st deriv prediction can be used
|
|
if( (toothCurrentCount == 1) || (toothCurrentCount == 3) ) { triggerToothAngle = 70; triggerFilterTime = curGap; } //Trigger filter is set to whatever time it took to do 70 degrees (Next trigger is 110 degrees away)
|
|
else { triggerToothAngle = 110; triggerFilterTime = (curGap * 3) >> 3; } //Trigger filter is set to (110*3)/8=41.25=41 degrees (Next trigger is 70 degrees away).
|
|
|
|
curGap = curGap >> 1;
|
|
|
|
toothLastMinusOneToothTime = toothLastToothTime;
|
|
toothLastToothTime = curTime;
|
|
} //Has sync
|
|
} //Trigger filter
|
|
}
|
|
|
|
void triggerSec_Miata9905()
|
|
{
|
|
curTime2 = micros();
|
|
curGap2 = curTime2 - toothLastSecToothTime;
|
|
if ( curGap2 >= triggerSecFilterTime )
|
|
{
|
|
toothLastSecToothTime = curTime2;
|
|
lastGap = curGap2;
|
|
|
|
if( (BIT_CHECK(currentStatus.engine, BIT_ENGINE_CRANK)) || (currentStatus.hasSync == false) )
|
|
{
|
|
triggerFilterTime = 1500;
|
|
//Check the status of the crank trigger
|
|
targetGap = (lastGap) >> 1; //The target gap is set at half the last tooth gap
|
|
if ( curGap < targetGap) //If the gap between this tooth and the last one is less than half of the previous gap, then we are very likely at the extra (3rd) tooth on the cam). This tooth is located at 421 crank degrees (aka 61 degrees) and therefore the last crank tooth seen was number 1 (At 350 degrees)
|
|
{
|
|
toothCurrentCount = 1;
|
|
currentStatus.hasSync = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
uint16_t getRPM_Miata9905()
|
|
{
|
|
//During cranking, RPM is calculated 4 times per revolution, once for each tooth on the crank signal.
|
|
//Because these signals aren't even (Alternating 110 and 70 degrees), this needs a special function
|
|
uint16_t tempRPM = 0;
|
|
if(currentStatus.RPM < configPage2.crankRPM)
|
|
{
|
|
int tempToothAngle;
|
|
noInterrupts();
|
|
tempToothAngle = triggerToothAngle;
|
|
revolutionTime = (toothLastToothTime - toothLastMinusOneToothTime); //Note that trigger tooth angle changes between 70 and 110 depending on the last tooth that was seen
|
|
interrupts();
|
|
revolutionTime = revolutionTime * 36;
|
|
tempRPM = (tempToothAngle * 60000000L) / revolutionTime;
|
|
}
|
|
else { tempRPM = stdGetRPM(); }
|
|
|
|
return tempRPM;
|
|
}
|
|
|
|
int getCrankAngle_Miata9905(int timePerDegree)
|
|
{
|
|
int crankAngle = 0;
|
|
if(currentStatus.hasSync == true)
|
|
{
|
|
//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
|
|
unsigned long tempToothLastToothTime;
|
|
int tempToothCurrentCount;
|
|
//Grab some variables that are used in the trigger code and assign them to temp variables.
|
|
noInterrupts();
|
|
tempToothCurrentCount = toothCurrentCount;
|
|
tempToothLastToothTime = toothLastToothTime;
|
|
interrupts();
|
|
|
|
crankAngle = toothAngles[(tempToothCurrentCount - 1)] + configPage2.triggerAngle; //Perform a lookup of the fixed toothAngles array to find what the angle of the last tooth passed was.
|
|
//Estimate the number of degrees travelled since the last tooth}
|
|
|
|
long elapsedTime = micros() - tempToothLastToothTime;
|
|
if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
|
|
else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
|
|
|
|
if (crankAngle >= 720) { crankAngle -= 720; }
|
|
if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
|
|
if (crankAngle < 0) { crankAngle += 360; }
|
|
}
|
|
|
|
return crankAngle;
|
|
}
|
|
|
|
void triggerSetEndTeeth_Miata9905()
|
|
{
|
|
|
|
}
|
|
|
|
/* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Name: Mazda AU version
|
|
Desc:
|
|
Note:
|
|
Tooth #2 is defined as the next crank tooth after the single cam tooth
|
|
Tooth number one is at 348* ATDC
|
|
*/
|
|
void triggerSetup_MazdaAU()
|
|
{
|
|
triggerToothAngle = 108; //The number of degrees that passes from tooth to tooth (primary). This is the maximum gap
|
|
toothCurrentCount = 99; //Fake tooth count represents no sync
|
|
secondaryToothCount = 0; //Needed for the cam tooth tracking
|
|
secondDerivEnabled = false;
|
|
decoderIsSequential = true;
|
|
|
|
toothAngles[0] = 348; //tooth #1
|
|
toothAngles[1] = 96; //tooth #2
|
|
toothAngles[2] = 168; //tooth #3
|
|
toothAngles[3] = 276; //tooth #4
|
|
|
|
MAX_STALL_TIME = (3333UL * triggerToothAngle); //Minimum 50rpm. (3333uS is the time per degree at 50rpm)
|
|
triggerFilterTime = 1500; //10000 rpm, assuming we're triggering on both edges off the crank tooth.
|
|
triggerSecFilterTime = (int)(1000000 / (MAX_RPM / 60 * 2)) / 2; //Same as above, but fixed at 2 teeth on the secondary input and divided by 2 (for cam speed)
|
|
}
|
|
|
|
void triggerPri_MazdaAU()
|
|
{
|
|
curTime = micros();
|
|
curGap = curTime - toothLastToothTime;
|
|
if ( curGap >= triggerFilterTime )
|
|
{
|
|
addToothLogEntry(curGap);
|
|
|
|
toothCurrentCount++;
|
|
if( (toothCurrentCount == 1) || (toothCurrentCount == 5) ) //Trigger is on CHANGE, hence 4 pulses = 1 crank rev
|
|
{
|
|
toothCurrentCount = 1; //Reset the counter
|
|
toothOneMinusOneTime = toothOneTime;
|
|
toothOneTime = curTime;
|
|
currentStatus.hasSync = true;
|
|
currentStatus.startRevolutions++; //Counter
|
|
}
|
|
|
|
if (currentStatus.hasSync == true)
|
|
{
|
|
// Locked cranking timing is available, fixed at 12* BTDC
|
|
if ( BIT_CHECK(currentStatus.engine, BIT_ENGINE_CRANK) && configPage2.ignCranklock )
|
|
{
|
|
if( toothCurrentCount == 1 ) { endCoil1Charge(); }
|
|
else if( toothCurrentCount == 3 ) { endCoil2Charge(); }
|
|
}
|
|
|
|
//Whilst this is an uneven tooth pattern, if the specific angle between the last 2 teeth is specified, 1st deriv prediction can be used
|
|
if( (toothCurrentCount == 1) || (toothCurrentCount == 3) ) { triggerToothAngle = 72; triggerFilterTime = curGap; } //Trigger filter is set to whatever time it took to do 72 degrees (Next trigger is 108 degrees away)
|
|
else { triggerToothAngle = 108; triggerFilterTime = (curGap * 3) >> 3; } //Trigger filter is set to (108*3)/8=40 degrees (Next trigger is 70 degrees away).
|
|
|
|
toothLastMinusOneToothTime = toothLastToothTime;
|
|
toothLastToothTime = curTime;
|
|
} //Has sync
|
|
} //Filter time
|
|
}
|
|
|
|
void triggerSec_MazdaAU()
|
|
{
|
|
curTime2 = micros();
|
|
lastGap = curGap2;
|
|
curGap2 = curTime2 - toothLastSecToothTime;
|
|
//if ( curGap2 < triggerSecFilterTime ) { return; }
|
|
toothLastSecToothTime = curTime2;
|
|
|
|
//if(BIT_CHECK(currentStatus.engine, BIT_ENGINE_CRANK) || currentStatus.hasSync == false)
|
|
if(currentStatus.hasSync == false)
|
|
{
|
|
//we find sync by looking for the 2 teeth that are close together. The next crank tooth after that is the one we're looking for.
|
|
//For the sake of this decoder, the lone cam tooth will be designated #1
|
|
if(secondaryToothCount == 2)
|
|
{
|
|
toothCurrentCount = 1;
|
|
currentStatus.hasSync = true;
|
|
}
|
|
else
|
|
{
|
|
triggerFilterTime = 1500; //In case the engine has been running and then lost sync.
|
|
targetGap = (lastGap) >> 1; //The target gap is set at half the last tooth gap
|
|
if ( curGap2 < targetGap) //If the gap between this tooth and the last one is less than half of the previous gap, then we are very likely at the extra (3rd) tooth on the cam). This tooth is located at 421 crank degrees (aka 61 degrees) and therefore the last crank tooth seen was number 1 (At 350 degrees)
|
|
{
|
|
secondaryToothCount = 2;
|
|
}
|
|
}
|
|
secondaryToothCount++;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
uint16_t getRPM_MazdaAU()
|
|
{
|
|
uint16_t tempRPM = 0;
|
|
|
|
if (currentStatus.hasSync == true)
|
|
{
|
|
//During cranking, RPM is calculated 4 times per revolution, once for each tooth on the crank signal.
|
|
//Because these signals aren't even (Alternating 108 and 72 degrees), this needs a special function
|
|
if(currentStatus.RPM < configPage2.crankRPM)
|
|
{
|
|
int tempToothAngle;
|
|
noInterrupts();
|
|
tempToothAngle = triggerToothAngle;
|
|
revolutionTime = (toothLastToothTime - toothLastMinusOneToothTime); //Note that trigger tooth angle changes between 72 and 108 depending on the last tooth that was seen
|
|
interrupts();
|
|
revolutionTime = revolutionTime * 36;
|
|
tempRPM = (tempToothAngle * 60000000L) / revolutionTime;
|
|
}
|
|
else { tempRPM = stdGetRPM(); }
|
|
}
|
|
return tempRPM;
|
|
}
|
|
|
|
int getCrankAngle_MazdaAU(int timePerDegree)
|
|
{
|
|
int crankAngle = 0;
|
|
if(currentStatus.hasSync == true)
|
|
{
|
|
//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
|
|
unsigned long tempToothLastToothTime;
|
|
int tempToothCurrentCount;
|
|
//Grab some variables that are used in the trigger code and assign them to temp variables.
|
|
noInterrupts();
|
|
tempToothCurrentCount = toothCurrentCount;
|
|
tempToothLastToothTime = toothLastToothTime;
|
|
interrupts();
|
|
|
|
crankAngle = toothAngles[(tempToothCurrentCount - 1)] + configPage2.triggerAngle; //Perform a lookup of the fixed toothAngles array to find what the angle of the last tooth passed was.
|
|
//Estimate the number of degrees travelled since the last tooth}
|
|
|
|
long elapsedTime = micros() - tempToothLastToothTime;
|
|
if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
|
|
else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
|
|
|
|
if (crankAngle >= 720) { crankAngle -= 720; }
|
|
if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
|
|
if (crankAngle < 0) { crankAngle += 360; }
|
|
}
|
|
|
|
return crankAngle;
|
|
}
|
|
|
|
void triggerSetEndTeeth_MazdaAU()
|
|
{
|
|
|
|
}
|
|
|
|
/*
|
|
Name: Non-360 Dual wheel
|
|
Desc: 2 wheels located either both on the crank or with the primary on the crank and the secondary on the cam.
|
|
Note: There can be no missing teeth on the primary wheel
|
|
*/
|
|
void triggerSetup_non360()
|
|
{
|
|
triggerToothAngle = (360 * configPage2.TrigAngMul) / configPage2.triggerTeeth; //The number of degrees that passes from tooth to tooth multiplied by the additional multiplier
|
|
toothCurrentCount = 255; //Default value
|
|
triggerFilterTime = (int)(1000000 / (MAX_RPM / 60 * configPage2.triggerTeeth)); //Trigger filter time is the shortest possible time (in uS) that there can be between crank teeth (ie at max RPM). Any pulses that occur faster than this time will be disgarded as noise
|
|
triggerSecFilterTime = (int)(1000000 / (MAX_RPM / 60 * 2)) / 2; //Same as above, but fixed at 2 teeth on the secondary input and divided by 2 (for cam speed)
|
|
secondDerivEnabled = false;
|
|
decoderIsSequential = true;
|
|
MAX_STALL_TIME = (3333UL * triggerToothAngle); //Minimum 50rpm. (3333uS is the time per degree at 50rpm)
|
|
}
|
|
|
|
|
|
void triggerPri_non360()
|
|
{
|
|
//This is not used, the trigger is identical to the dual wheel one, so that is used instead.
|
|
}
|
|
|
|
void triggerSec_non360()
|
|
{
|
|
//This is not used, the trigger is identical to the dual wheel one, so that is used instead.
|
|
}
|
|
|
|
uint16_t getRPM_non360()
|
|
{
|
|
uint16_t tempRPM = 0;
|
|
if( (currentStatus.hasSync == true) && (toothCurrentCount != 0) )
|
|
{
|
|
if(currentStatus.RPM < configPage2.crankRPM) { tempRPM = crankingGetRPM(configPage2.triggerTeeth); }
|
|
else { tempRPM = stdGetRPM(); }
|
|
}
|
|
return tempRPM;
|
|
}
|
|
|
|
int getCrankAngle_non360(int timePerDegree)
|
|
{
|
|
//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
|
|
unsigned long tempToothLastToothTime;
|
|
int tempToothCurrentCount;
|
|
//Grab some variables that are used in the trigger code and assign them to temp variables.
|
|
noInterrupts();
|
|
tempToothCurrentCount = toothCurrentCount;
|
|
tempToothLastToothTime = toothLastToothTime;
|
|
interrupts();
|
|
|
|
//Handle case where the secondary tooth was the last one seen
|
|
if(tempToothCurrentCount == 0) { tempToothCurrentCount = configPage2.triggerTeeth; }
|
|
|
|
//Number of teeth that have passed since tooth 1, multiplied by the angle each tooth represents, plus the angle that tooth 1 is ATDC. This gives accuracy only to the nearest tooth.
|
|
int crankAngle = (tempToothCurrentCount - 1) * triggerToothAngle;
|
|
crankAngle = (crankAngle / configPage2.TrigAngMul) + configPage2.triggerAngle; //Have to divide by the multiplier to get back to actual crank angle.
|
|
|
|
//Estimate the number of degrees travelled since the last tooth}
|
|
long elapsedTime = micros() - tempToothLastToothTime;
|
|
if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
|
|
else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
|
|
|
|
if (crankAngle >= 720) { crankAngle -= 720; }
|
|
if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
|
|
if (crankAngle < 0) { crankAngle += 360; }
|
|
|
|
return crankAngle;
|
|
}
|
|
|
|
void triggerSetEndTeeth_Non360()
|
|
{
|
|
|
|
}
|
|
|
|
/* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Name: Nissan 360 tooth with cam
|
|
Desc:
|
|
Note:
|
|
*/
|
|
void triggerSetup_Nissan360()
|
|
{
|
|
triggerFilterTime = (1000000 / (MAX_RPM / 60 * 360UL)); //Trigger filter time is the shortest possible time (in uS) that there can be between crank teeth (ie at max RPM). Any pulses that occur faster than this time will be disgarded as noise
|
|
triggerSecFilterTime = (int)(1000000 / (MAX_RPM / 60 * 2)) / 2; //Same as above, but fixed at 2 teeth on the secondary input and divided by 2 (for cam speed)
|
|
secondaryToothCount = 0; //Initially set to 0 prior to calculating the secondary window duration
|
|
secondDerivEnabled = false;
|
|
decoderIsSequential = true;
|
|
toothCurrentCount = 1;
|
|
triggerToothAngle = 2;
|
|
MAX_STALL_TIME = (3333UL * triggerToothAngle); //Minimum 50rpm. (3333uS is the time per degree at 50rpm)
|
|
}
|
|
|
|
|
|
void triggerPri_Nissan360()
|
|
{
|
|
curTime = micros();
|
|
//curGap = curTime - toothLastToothTime;
|
|
//if ( curGap < triggerFilterTime ) { return; }
|
|
toothCurrentCount++; //Increment the tooth counter
|
|
//addToothLogEntry(curGap); Disable tooth logging on this decoder due to overhead
|
|
|
|
toothLastMinusOneToothTime = toothLastToothTime;
|
|
toothLastToothTime = curTime;
|
|
|
|
//if ( currentStatus.hasSync == false ) { return; }
|
|
|
|
if ( toothCurrentCount == 181) //1 complete crank revolution
|
|
{
|
|
toothOneMinusOneTime = toothOneTime;
|
|
toothOneTime = curTime;
|
|
currentStatus.startRevolutions++;
|
|
}
|
|
else if ( toothCurrentCount == 361 ) //2 complete crank revolutions
|
|
{
|
|
toothCurrentCount = 1;
|
|
toothOneMinusOneTime = toothOneTime;
|
|
toothOneTime = curTime;
|
|
currentStatus.startRevolutions++; //Counter
|
|
}
|
|
|
|
//Recalc the new filter value
|
|
//setFilter(curGap);
|
|
}
|
|
|
|
void triggerSec_Nissan360()
|
|
{
|
|
curTime2 = micros();
|
|
curGap2 = curTime2 - toothLastSecToothTime;
|
|
//if ( curGap2 < triggerSecFilterTime ) { return; }
|
|
toothLastSecToothTime = curTime2;
|
|
//OPTIONAL: Set filter at 25% of the current speed
|
|
//triggerSecFilterTime = curGap2 >> 2;
|
|
|
|
|
|
//Calculate number of primary teeth that this window has been active for
|
|
if( (secondaryToothCount == 0) || (READ_SEC_TRIGGER() == LOW) ) { secondaryToothCount = toothCurrentCount; } //This occurs on the first rotation upon powerup OR the start of a secondary window
|
|
else
|
|
{
|
|
//If we reach here, we are at the end of a secondary window
|
|
byte secondaryDuration = toothCurrentCount - secondaryToothCount; //How many primary teeth have passed during the duration of this secondary window
|
|
|
|
if(currentStatus.hasSync == false)
|
|
{
|
|
if(configPage1.nCylinders == 4)
|
|
{
|
|
if( (secondaryDuration >= 15) || (secondaryDuration <= 17) ) //Duration of window = 16 primary teeth
|
|
{
|
|
toothCurrentCount = 16; //End of first window (The longest) occurs 16 teeth after TDC
|
|
currentStatus.hasSync = true;
|
|
}
|
|
else if( (secondaryDuration >= 11) || (secondaryDuration <= 13) ) //Duration of window = 12 primary teeth
|
|
{
|
|
toothCurrentCount = 102; //End of second window is after 90+12 primary teeth
|
|
currentStatus.hasSync = true;
|
|
}
|
|
else if( (secondaryDuration >= 7) || (secondaryDuration <= 9) ) //Duration of window = 8 primary teeth
|
|
{
|
|
toothCurrentCount = 188; //End of third window is after 90+90+8 primary teeth
|
|
currentStatus.hasSync = true;
|
|
}
|
|
else if( (secondaryDuration >= 3) || (secondaryDuration <= 5) ) //Duration of window = 4 primary teeth
|
|
{
|
|
toothCurrentCount = 274; //End of fourth window is after 90+90+90+4 primary teeth
|
|
currentStatus.hasSync = true;
|
|
}
|
|
}
|
|
else if(configPage1.nCylinders == 6)
|
|
{
|
|
if( (secondaryDuration >= 23) || (secondaryDuration <= 25) ) //Duration of window = 16 primary teeth
|
|
{
|
|
toothCurrentCount = 24; //End of first window (The longest) occurs 24 teeth after TDC
|
|
currentStatus.hasSync = true;
|
|
}
|
|
else if( (secondaryDuration >= 19) || (secondaryDuration <= 21) ) //Duration of window = 12 primary teeth
|
|
{
|
|
toothCurrentCount = 84; //End of second window is after 60+20 primary teeth
|
|
currentStatus.hasSync = true;
|
|
}
|
|
else if( (secondaryDuration >= 15) || (secondaryDuration <= 17) ) //Duration of window = 16 primary teeth
|
|
{
|
|
toothCurrentCount = 136; //End of third window is after 60+60+16 primary teeth
|
|
currentStatus.hasSync = true;
|
|
}
|
|
else if( (secondaryDuration >= 11) || (secondaryDuration <= 13) ) //Duration of window = 12 primary teeth
|
|
{
|
|
toothCurrentCount = 192; //End of fourth window is after 60+60+60+12 primary teeth
|
|
currentStatus.hasSync = true;
|
|
}
|
|
else if( (secondaryDuration >= 7) || (secondaryDuration <= 9) ) //Duration of window = 8 primary teeth
|
|
{
|
|
toothCurrentCount = 248; //End of fifth window is after 60+60+60+60+8 primary teeth
|
|
currentStatus.hasSync = true;
|
|
}
|
|
else if( (secondaryDuration >= 3) || (secondaryDuration <= 5) ) //Duration of window = 4 primary teeth
|
|
{
|
|
toothCurrentCount = 304; //End of sixth window is after 60+60+60+60+60+4 primary teeth
|
|
currentStatus.hasSync = true;
|
|
}
|
|
}
|
|
else { currentStatus.hasSync = false; } //This should really never happen
|
|
}
|
|
else
|
|
{
|
|
//Already have sync, but do a verify every 720 degrees.
|
|
if(configPage1.nCylinders == 4)
|
|
{
|
|
if(secondaryDuration >= 15) //Duration of window = 16 primary teeth
|
|
{
|
|
toothCurrentCount = 16; //End of first window (The longest) occurs 16 teeth after TDC
|
|
}
|
|
}
|
|
else if(configPage1.nCylinders == 6)
|
|
{
|
|
if(secondaryDuration >= 23) //Duration of window = 24 primary teeth
|
|
{
|
|
toothCurrentCount = 24; //End of first window (The longest) occurs 24 teeth after TDC
|
|
}
|
|
} //Cylinder count
|
|
} //Has sync
|
|
} //First getting sync or not
|
|
}
|
|
|
|
uint16_t getRPM_Nissan360()
|
|
{
|
|
return stdGetRPM();
|
|
}
|
|
|
|
int getCrankAngle_Nissan360(int timePerDegree)
|
|
{
|
|
//As each tooth represents 2 crank degrees, we only need to determine whether we're more or less than halfway between teeth to know whether to add another 1 degrees
|
|
int crankAngle = 0;
|
|
unsigned long halfTooth = (toothLastToothTime - toothLastMinusOneToothTime) >> 1;
|
|
if ( (micros() - toothLastToothTime) > halfTooth)
|
|
{
|
|
//Means we're over halfway to the next tooth, so add on 1 degree
|
|
crankAngle = (toothCurrentCount * triggerToothAngle) + 1;
|
|
}
|
|
else { crankAngle = (toothCurrentCount * triggerToothAngle); }
|
|
|
|
return crankAngle;
|
|
}
|
|
|
|
void triggerSetEndTeeth_Nissan360()
|
|
{
|
|
|
|
}
|
|
|
|
/* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Name: Subary 6/7
|
|
Desc:
|
|
Note:
|
|
*/
|
|
void triggerSetup_Subaru67()
|
|
{
|
|
triggerFilterTime = (1000000 / (MAX_RPM / 60 * 360UL)); //Trigger filter time is the shortest possible time (in uS) that there can be between crank teeth (ie at max RPM). Any pulses that occur faster than this time will be disgarded as noise
|
|
triggerSecFilterTime = (int)(1000000 / (MAX_RPM / 60 * 2)) / 2; //Same as above, but fixed at 2 teeth on the secondary input and divided by 2 (for cam speed)
|
|
secondaryToothCount = 0; //Initially set to 0 prior to calculating the secondary window duration
|
|
secondDerivEnabled = false;
|
|
decoderIsSequential = true;
|
|
toothCurrentCount = 1;
|
|
triggerToothAngle = 2;
|
|
MAX_STALL_TIME = (3333UL * 93); //Minimum 50rpm. (3333uS is the time per degree at 50rpm)
|
|
|
|
toothAngles[0] = 710; //tooth #1
|
|
toothAngles[1] = 83; //tooth #2
|
|
toothAngles[2] = 115; //tooth #3
|
|
toothAngles[3] = 170; //tooth #4
|
|
toothAngles[4] = toothAngles[1] + 180;
|
|
toothAngles[5] = toothAngles[2] + 180;
|
|
toothAngles[6] = toothAngles[3] + 180;
|
|
toothAngles[7] = toothAngles[1] + 360;
|
|
toothAngles[8] = toothAngles[2] + 360;
|
|
toothAngles[9] = toothAngles[3] + 360;
|
|
toothAngles[10] = toothAngles[1] + 540;
|
|
toothAngles[11] = toothAngles[2] + 540;
|
|
}
|
|
|
|
|
|
void triggerPri_Subaru67()
|
|
{
|
|
curTime = micros();
|
|
//curGap = curTime - toothLastToothTime;
|
|
//if ( curGap < triggerFilterTime ) { return; }
|
|
toothCurrentCount++; //Increment the tooth counter
|
|
addToothLogEntry(curGap);
|
|
|
|
toothLastMinusOneToothTime = toothLastToothTime;
|
|
toothLastToothTime = curTime;
|
|
|
|
if ( (currentStatus.hasSync == false) || configPage2.useResync)
|
|
{
|
|
//Sync is determined by counting the number of cam teeth that have passed between the crank teeth
|
|
switch(secondaryToothCount)
|
|
{
|
|
case 0:
|
|
//If no teeth have passed, we can't do anything
|
|
break;
|
|
|
|
case 1:
|
|
//Can't do anything with a single pulse from the cam either (We need either 2 or 3 pulses)
|
|
secondaryToothCount = 0;
|
|
break;
|
|
|
|
case 2:
|
|
toothCurrentCount = 8;
|
|
currentStatus.hasSync = true;
|
|
secondaryToothCount = 0;
|
|
break;
|
|
|
|
case 3:
|
|
toothCurrentCount = 2;
|
|
currentStatus.hasSync = true;
|
|
secondaryToothCount = 0;
|
|
break;
|
|
|
|
default:
|
|
//Almost certainly due to noise
|
|
break;
|
|
|
|
}
|
|
}
|
|
|
|
//Check sync again
|
|
if ( currentStatus.hasSync == true )
|
|
{
|
|
//Locked timing during cranking. This is fixed at 10* BTDC.
|
|
if ( BIT_CHECK(currentStatus.engine, BIT_ENGINE_CRANK) && configPage2.ignCranklock)
|
|
{
|
|
if( (toothCurrentCount == 1) || (toothCurrentCount == 7) ) { endCoil1Charge(); endCoil3Charge(); }
|
|
else if( (toothCurrentCount == 4) || (toothCurrentCount == 10) ) { endCoil2Charge(); endCoil4Charge(); }
|
|
}
|
|
|
|
if ( toothCurrentCount > 12 ) //2 complete crank revolutions
|
|
{
|
|
toothCurrentCount = 1;
|
|
toothOneMinusOneTime = toothOneTime;
|
|
toothOneTime = curTime;
|
|
currentStatus.startRevolutions++; //Counter
|
|
}
|
|
}
|
|
|
|
//Recalc the new filter value
|
|
//setFilter(curGap);
|
|
}
|
|
|
|
void triggerSec_Subaru67()
|
|
{
|
|
curTime2 = micros();
|
|
curGap2 = curTime2 - toothLastSecToothTime;
|
|
//if ( curGap2 < triggerSecFilterTime ) { return; }
|
|
toothLastSecToothTime = curTime2;
|
|
//OPTIONAL Set filter at 25% of the current speed
|
|
//triggerSecFilterTime = curGap2 >> 2;
|
|
secondaryToothCount++;
|
|
}
|
|
|
|
uint16_t getRPM_Subaru67()
|
|
{
|
|
//if(currentStatus.RPM < configPage2.crankRPM) { return crankingGetRPM(configPage2.triggerTeeth); }
|
|
return stdGetRPM();
|
|
}
|
|
|
|
int getCrankAngle_Subaru67(int timePerDegree)
|
|
{
|
|
int crankAngle = 0;
|
|
if( currentStatus.hasSync == true )
|
|
{
|
|
//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
|
|
unsigned long tempToothLastToothTime;
|
|
int tempToothCurrentCount;
|
|
//Grab some variables that are used in the trigger code and assign them to temp variables.
|
|
noInterrupts();
|
|
tempToothCurrentCount = toothCurrentCount;
|
|
tempToothLastToothTime = toothLastToothTime;
|
|
interrupts();
|
|
|
|
crankAngle = toothAngles[(tempToothCurrentCount - 1)] + configPage2.triggerAngle; //Perform a lookup of the fixed toothAngles array to find what the angle of the last tooth passed was.
|
|
//Estimate the number of degrees travelled since the last tooth}
|
|
|
|
unsigned long elapsedTime = micros() - tempToothLastToothTime;
|
|
if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
|
|
else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
|
|
|
|
if (crankAngle >= 720) { crankAngle -= 720; }
|
|
if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
|
|
if (crankAngle < 0) { crankAngle += 360; }
|
|
}
|
|
|
|
return crankAngle;
|
|
}
|
|
|
|
void triggerSetEndTeeth_Subaru67()
|
|
{
|
|
|
|
}
|
|
|
|
/* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Name: Daihatsu +1 trigger for 3 and 4 cylinder engines
|
|
Desc: Tooth equal to the number of cylinders are evenly spaced on the cam. No position sensing (Distributor is retained) so crank angle is a made up figure based purely on the first teeth to be seen
|
|
Note: This is a very simple decoder. See http://www.megamanual.com/ms2/GM_7pinHEI.htm
|
|
*/
|
|
void triggerSetup_Daihatsu()
|
|
{
|
|
triggerActualTeeth = configPage1.nCylinders + 1;
|
|
triggerToothAngle = 720 / triggerActualTeeth; //The number of degrees that passes from tooth to tooth
|
|
triggerFilterTime = 60000000L / MAX_RPM / configPage1.nCylinders; // Minimum time required between teeth
|
|
triggerFilterTime = triggerFilterTime / 2; //Safety margin
|
|
secondDerivEnabled = false;
|
|
decoderIsSequential = false;
|
|
|
|
MAX_STALL_TIME = (1851UL * triggerToothAngle)*4;//Minimum 90rpm. (1851uS is the time per degree at 90rpm). This uses 90rpm rather than 50rpm due to the potentially very high stall time on a 4 cylinder if we wait that long.
|
|
|
|
if(configPage1.nCylinders == 3)
|
|
{
|
|
toothAngles[0] = 0; //tooth #1
|
|
toothAngles[1] = 30; //tooth #2 (Extra tooth)
|
|
toothAngles[2] = 240; //tooth #3
|
|
toothAngles[3] = 480; //tooth #4
|
|
}
|
|
else
|
|
{
|
|
//Should be 4 cylinders here
|
|
toothAngles[0] = 0; //tooth #1
|
|
toothAngles[1] = 30; //tooth #2 (Extra tooth)
|
|
toothAngles[2] = 180; //tooth #3
|
|
toothAngles[3] = 360; //tooth #4
|
|
toothAngles[4] = 540; //tooth #5
|
|
}
|
|
}
|
|
|
|
void triggerPri_Daihatsu()
|
|
{
|
|
curTime = micros();
|
|
curGap = curTime - toothLastToothTime;
|
|
|
|
//if ( curGap >= triggerFilterTime )
|
|
{
|
|
toothSystemCount++;
|
|
|
|
if (currentStatus.hasSync == true)
|
|
{
|
|
if( (toothCurrentCount == triggerActualTeeth) ) //Check if we're back to the beginning of a revolution
|
|
{
|
|
toothCurrentCount = 1; //Reset the counter
|
|
toothOneMinusOneTime = toothOneTime;
|
|
toothOneTime = curTime;
|
|
currentStatus.hasSync = true;
|
|
currentStatus.startRevolutions++; //Counter
|
|
|
|
//Need to set a special filter time for the next tooth
|
|
triggerFilterTime = 20; //Fix this later
|
|
}
|
|
else
|
|
{
|
|
toothCurrentCount++; //Increment the tooth counter
|
|
setFilter(curGap); //Recalc the new filter value
|
|
}
|
|
|
|
//addToothLogEntry(curGap);
|
|
|
|
if ( configPage2.ignCranklock && BIT_CHECK(currentStatus.engine, BIT_ENGINE_CRANK) )
|
|
{
|
|
//This locks the cranking timing to 0 degrees BTDC (All the triggers allow for)
|
|
if(toothCurrentCount == 1) { endCoil1Charge(); }
|
|
else if(toothCurrentCount == 2) { endCoil2Charge(); }
|
|
else if(toothCurrentCount == 3) { endCoil3Charge(); }
|
|
else if(toothCurrentCount == 4) { endCoil4Charge(); }
|
|
}
|
|
}
|
|
else //NO SYNC
|
|
{
|
|
//
|
|
if(toothSystemCount >= 3) //Need to have seen at least 3 teeth to determine SYNC
|
|
{
|
|
unsigned long targetTime;
|
|
//We need to try and find the extra tooth (#2) which is located 30 degrees after tooth #1
|
|
//Aim for tooth times less than about 60 degrees
|
|
if(configPage1.nCylinders == 3)
|
|
{
|
|
targetTime = (toothLastToothTime - toothLastMinusOneToothTime) >> 2; //Teeth are 240 degrees apart for 3 cylinder. 240/3 = 60
|
|
}
|
|
else
|
|
{
|
|
targetTime = ((toothLastToothTime - toothLastMinusOneToothTime) * 3) >> 4; //Teeth are 180 degrees apart for 4 cylinder. (180*3)/8 = 67
|
|
}
|
|
if(curGap < targetTime)
|
|
{
|
|
//Means we're on the extra tooth here
|
|
toothCurrentCount = 2; //Reset the counter
|
|
currentStatus.hasSync = true;
|
|
triggerFilterTime = targetTime; //Lazy, but it works
|
|
}
|
|
}
|
|
}
|
|
|
|
toothLastMinusOneToothTime = toothLastToothTime;
|
|
toothLastToothTime = curTime;
|
|
} //Trigger filter
|
|
}
|
|
void triggerSec_Daihatsu() { return; } //Not required (Should never be called in the first place)
|
|
|
|
uint16_t getRPM_Daihatsu()
|
|
{
|
|
uint16_t tempRPM = 0;
|
|
if( currentStatus.RPM < (unsigned int)(configPage2.crankRPM * 100) && false) //Disable special cranking processing for now
|
|
{
|
|
//Cn't use standard cranking RPM functin due to extra tooth
|
|
if( currentStatus.hasSync == true )
|
|
{
|
|
if(toothCurrentCount == 2) { tempRPM = currentStatus.RPM; }
|
|
else if (toothCurrentCount == 3) { tempRPM = currentStatus.RPM; }
|
|
else
|
|
{
|
|
noInterrupts();
|
|
revolutionTime = (toothLastToothTime - toothLastMinusOneToothTime) * (triggerActualTeeth-1);
|
|
interrupts();
|
|
tempRPM = (US_IN_MINUTE / revolutionTime);
|
|
if(tempRPM >= MAX_RPM) { tempRPM = currentStatus.RPM; } //Sanity check
|
|
} //is tooth #2
|
|
}
|
|
else { tempRPM = 0; } //No sync
|
|
}
|
|
else
|
|
{ tempRPM = stdGetRPM() << 1; } //Multiply RPM by 2 due to tracking over 720 degrees now rather than 360
|
|
|
|
return tempRPM;
|
|
|
|
}
|
|
int getCrankAngle_Daihatsu(int timePerDegree)
|
|
{
|
|
//This is the current angle ATDC the engine is at. This is the last known position based on what tooth was last 'seen'. It is only accurate to the resolution of the trigger wheel (Eg 36-1 is 10 degrees)
|
|
unsigned long tempToothLastToothTime;
|
|
int tempToothCurrentCount;
|
|
int crankAngle;
|
|
//Grab some variables that are used in the trigger code and assign them to temp variables.
|
|
noInterrupts();
|
|
tempToothCurrentCount = toothCurrentCount;
|
|
tempToothLastToothTime = toothLastToothTime;
|
|
interrupts();
|
|
|
|
crankAngle = toothAngles[tempToothCurrentCount-1] + configPage2.triggerAngle; //Crank angle of the last tooth seen
|
|
//Estimate the number of degrees travelled since the last tooth}
|
|
long elapsedTime = micros() - tempToothLastToothTime;
|
|
if(elapsedTime < SHRT_MAX ) { crankAngle += div((int)elapsedTime, timePerDegree).quot; } //This option is much faster, but only available for smaller values of elapsedTime
|
|
else { crankAngle += ldiv(elapsedTime, timePerDegree).quot; }
|
|
|
|
if (crankAngle >= 720) { crankAngle -= 720; }
|
|
if (crankAngle > CRANK_ANGLE_MAX) { crankAngle -= CRANK_ANGLE_MAX; }
|
|
if (crankAngle < 0) { crankAngle += CRANK_ANGLE_MAX; }
|
|
|
|
return crankAngle;
|
|
}
|
|
|
|
void triggerSetEndTeeth_Daihatsu()
|
|
{
|
|
|
|
}
|