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Improvements to the Mazda_AU decoder

This commit is contained in:
Josh Stewart 2016-08-05 17:01:28 +10:00
parent a4a96d1777
commit e587f2df5d
2 changed files with 10 additions and 12 deletions
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20
decoders.ino
View File

@ -1077,6 +1077,8 @@ void triggerPri_MazdaAU()
curTime = micros();
curGap = curTime - toothLastToothTime;
if ( curGap < triggerFilterTime ) { return; } //Filter check. Pulses should never be less than triggerFilterTime
addToothLogEntry(curGap);
toothCurrentCount++;
if(toothCurrentCount == 1 || toothCurrentCount == 5) //Trigger is on CHANGE, hence 4 pulses = 1 crank rev
@ -1096,27 +1098,24 @@ void triggerPri_MazdaAU()
if( toothCurrentCount == 1 ) { endCoil1Charge(); }
else if( toothCurrentCount == 3 ) { endCoil2Charge(); }
}
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 = 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).
//curGap = curGap >> 1;
toothLastMinusOneToothTime = toothLastToothTime;
toothLastToothTime = curTime;
}
void triggerSec_MazdaAU()
{
curTime2 = micros();
lastGap = curGap2;
curGap2 = curTime2 - toothLastSecToothTime;
//if ( curGap2 < triggerSecFilterTime ) { return; }
toothLastSecToothTime = curTime2;
lastGap = curGap2;
if(BIT_CHECK(currentStatus.engine, BIT_ENGINE_CRANK) || !currentStatus.hasSync)
//if(BIT_CHECK(currentStatus.engine, BIT_ENGINE_CRANK) || !currentStatus.hasSync) //Not sure if the cranking check is needed here
if(!currentStatus.hasSync)
{
//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
@ -1127,10 +1126,9 @@ void triggerSec_MazdaAU()
}
else
{
triggerFilterTime = 1500;
//Check the status of the crank trigger
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 ( 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)
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;
}
@ -1147,13 +1145,13 @@ int getRPM_MazdaAU()
if (!currentStatus.hasSync) { return 0; }
//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
//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 70 and 110 depending on the last tooth that was seen
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;
return (tempToothAngle * 60000000L) / revolutionTime;

2
speeduino.ino
View File

@ -433,7 +433,7 @@ void setup()
if(configPage2.TrigEdge == 0) { attachInterrupt(triggerInterrupt, trigger, RISING); } // Attach the crank trigger wheel interrupt (Hall sensor drags to ground when triggering)
else { attachInterrupt(triggerInterrupt, trigger, FALLING); } // Primary trigger connects to
attachInterrupt(triggerInterrupt2, triggerSec_MazdaAU, RISING);
attachInterrupt(triggerInterrupt2, triggerSec_MazdaAU, FALLING);
break;
default: