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ahh I think I understand more so what is going on now. With the two tables you are trying to make sure the ISR isn't reading the same table the fuel calc might be modifying. Incase the ISR is called in the middle of the fuel calc function? Where is your code is the scheduler ISR? I am assuming that ...

In reply to Tom, If there are output events missing, its almost certain to be a hardware/firmware issue. If the tune was incorrect, the outputs would still happen, just the engine would not respond well to those outputs (spark at the wrong time, not enough duty cycle on the fuel injector causing a m...

Is there a way to confirm that all the events in the fuel schedule have been processed before you switch tables? Maybe the fuel and spark schedule should be concurrent queue data types? If we assume a 4 cylinder engine, every engine cycle 4 new spark event and 4 new fuel events will be loaded into a...

Ah damn it! The problem persists. Wonder if we should start a separate thread for this missing injector pulse issue? I had a look in the code to see if I could see anything obvious... In handleFuelInjectionEvent() there are a couple of error catches Where do these warning get displayed/logged? Is it...

Sorry if this is a dumb suggestion, I haven't had time to look at the code in detail. Correct me if I am wrong but the fueling schedule is calculated once per engine cycle (720 degrees)? I am assuming that the injection pulse is fixed to finish at the same engine position, and as more fuel is requir...

Nice.

What was the issue / what change did you make?

I don't think there is a VVTi position sensor, I wonder if he meant PWM to control VVTi not PID. Looks like this engine has crank position sensor and two camshaft position sensors - one on each cam. Exhaust is not variable, intake is variable - the shift between cam sensors is the way to know VVTi ...

How does VVTi position sensor work - is it just a potentiometer like TPS or something more complicated? Looks like only the intake cam is variable on this engine? http://www.2jzgarage.com/2012/02/2jzgte-vvti-information/ I don't think there is a VVTi position sensor, I wonder if he meant PWM to con...

Yeah I noticed that the 14point7 stuff doesn't throw up errors when the sensor is faulty, it just give weird readings. Which can be confusing, as you don't know if the problem is with the controller or the sensor.

I can't offer much help with tuning the idle fuel. I think the oscillations are very likely caused by the wandering ignition timing. On a 4age, the tps has a fully closed switch, when that switch is closed at idle, the ignition timing is fixed at something like 8 degrees. Often times people mess wit...

Hmm interesting, would be good to see throttle position as well as the ignition timing angle in the video. There isn't any sync loss with the crank trigger? If its possible it would be great to have a graph of engine acceleration. That way any negative spikes in that graph would correlate to a missf...

I think relying on an external WBO controller is fine. It allows the users the most flexibility. How are you planning to do the closed loop control? I know OEM ecus now use trim tables, which are load against rpm, and a -/+ % of trim for the fuel injectors. They normally have a long term trim table ...

How far did you get with the knock sensor chip? I see that you have it outputting an analog voltage, but it looks like you are stuck trying to find out how to set the RPM against Knock threshold curve, to check it is working? I found some interesting resources that might be of help, as this is some...

OK right, I am interested in having a play around with it, Sorry if its been mentioned, but is it possible to datalog the integrator output against rpm? My plan would be to set the timing to something conservative and use the data logging to setup the threshold table. Then slowly advance the timing ...

How far did you get with the knock sensor chip? I see that you have it outputting an analog voltage, but it looks like you are stuck trying to find out how to set the RPM against Knock threshold curve, to check it is working? I found some interesting resources that might be of help, as this is somet...

Sweet, good work!

Did you do the same as russian and use the stock ecu to warm up the engine? or were you able to start it from cold?

Looks like the AFM fuel pump switch is purely mechanical. So the ecu shouldn't effect it. It really sounds like the fuel pump isn't running when cranking from what you described. You manually activate the fuel pump by opening the vane. It builds up a bit of fuel pressure in the rails. Then you crank...

For the sake of testing I would confirm the fuel pump is running. If you can't hear it run when you are cranking I would run a 12v feed directly to it, just to rule that out as an issue. I had a quick Google and found a write up about replacing the afm with a map sensor. This might be of interest: N...

Awesome! Glad we got a solution. I agree with kb1gtt on the external pull down and current limiting resistor. We kinda have solved a hardware issue with software. I think the only reason to use the internal pull down would be to save board space or reduce cost, and I don't think either of those are ...

My Suggestion would be to set up the pins connected to the TC4427's as: VAL_GPIOI_MODER PIN_MODE_INPUT(GPIOI_PIN14) VAL_GPIOI_OTYPER PIN_OTYPE_PUSHPULL(GPIOI_PIN14) VAL_GPIOI_OSPEEDR PIN_OSPEED_100M(GPIOI_PIN14) VAL_GPIOI_PUPDR PIN_PUPDR_PULLDOWN(GPIOE_PIN14) VAL_GPIOI_ODR PIN_ODR_HIGH(GPIOI_PIN0) T...

I am not able to test this in hardware right now. However looking at the files, there are a few things I am not sure about In the board patch file. Just to clarify whats been changed. PCMLK(PC7?) and PC9 have been changed to an output. PCMLK(PC7?) is set to floating output. PC9 is changed from a pul...

Yeah I can have a look, not familiar with the STM32 that much though.

Any chance you can post the config that caused all 6 to to blink at the same time?

You are talking about the TC4427? Looking at the datasheet the input looks like a mosfet. What I think could be happening is that mosfet gate is charging and discharging, because all the high side input traces run parallel so the other input traces have a tiny current induced in them from the signal...

If you are checking to see if you are getting fuel to the cylinders.
You can crank it over some, and then take out a spark plug and check if it is wet and if you can smell fuel.

Cheers kb1gtt, is that 0.125amps per channel or total per chip? I also noticed they do not have any pull down/ pull up resistors on their input, do they have an internal pull down? I couldn't find anything in the data sheet. I just worry that before the MCU has initialized the output pins, the input...

Thanks Thommm, I should have said pad instead of pin. I was able to work out the pin 1 on the package but I wasn't sure what was pin 1 on the foot print as there is maybe a tiny dot on the silk screen. I down loaded kicad and confirmed it is that orientation though. The technique you mention about s...

From the wiki: C354 & C358 are 4.7uF They are parallel with the decoupling caps. Also a quick question about the TC4427 High side drivers, the pcb foot print has a thermal pad, but the IC's do not. Is the thermal pad just a precaution? Also is this the correct orientation? TC4427.PNG It looks li...

Hi everyone, I am putting together a Frankenstein board to play around with. I started on it today, following the instructions on the wiki. However I ran into a little bit of an issue. I ordered the kit with the cap/res pack but it doesn't seem to include the 4.7uF or the 10uF caps? Are these necess...

What would be the difference between the power tune and the economy tune?
You should be able to achieve both with a single table, without sacrificing the other.

Dual maps are generally for different fuels, high octane fuel tune vs lower octane fuel tune for example

I am sure you already know this, but you can move all the static strings from ram to flash, and that would free up a lot of ram.