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Post Info TOPIC: Autotune and Data logging for ECU Editor


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RE: Autotune and Data logging for ECU Editor


thanks
my laptop only has 2 setting 800x600 and 1024x768

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jkwool,

For an experiment I am going to wire my Zetronix WB 5v output into the factory o2 input signal,
My turbo Gen II, fuel by Boost by Smith GM 3-bar factory setup. I will see what the datalogs look like compared to each other on the same run.

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turbogpz wrote:

jkwool,

For an experiment I am going to wire my Zetronix WB 5v output into the factory o2 input signal,
My turbo Gen II, fuel by Boost by Smith GM 3-bar factory setup. I will see what the datalogs look like compared to each other on the same run.



Yeah mate that would be great, I am interested to see what the output is, be cool if we get the 0-5v values scaled to a 0-255 value from the ecu.

Could you send through the datalogs to ECUDataLogger @ gmail.com so i can take a look!

Thanks



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Does the zetronix have a simulated narrowband 0-1v output
should be closer to wideband accuracy to a narrowband scale

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Maj750 wrote:

Does the zetronix have a simulated narrowband 0-1v output
should be closer to wideband accuracy to a narrowband scale




I think the zeitronix does but I think with all wideband when you use the simulated narrowband output you dont get a linear response you get the same inverted response as a narrowband with a high resolution around lamba 1/AFR 14.7 and much less resolution around the AFR ranges that are most useful for tuning. The narrowband output from widebands is provided so you can plug it into the ecu and remove the original narrowband sensor and still keep the standard ecu closed loop tuning.

I think for performance tuning it will be great if we can get the 0-5v linear output from the wideband fed into the ecu, its much easier to create an accurate response curve in the afr logging software and it also opens up the ability to build autotune directly into the ecu using the full range of wideband afr values adjusting for changes in conditions in real time in software running on the ecu.



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jkwool wrote:


I think for performance tuning it will be great if we can get the 0-5v linear output from the wideband fed into the ecu, its much easier to create an accurate response curve in the afr logging software and it also opens up the ability to build autotune directly into the ecu using the full range of wideband afr values adjusting for changes in conditions in real time in software running on the ecu.



Very much agree there

 



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Got the Gen 2 ecu from Phil (ToXSicK RoCKeT) today. 

Thanks heaps for sending that over mate, much appreciated, should make hacking and testing the ecu easier!

Cheers

-Justin.


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jkwool wrote:

Got the Gen 2 ecu from Phil (ToXSicK RoCKeT) today.


Thanks heaps for sending that over mate, much appreciated, should make hacking and testing the ecu easier!

Cheers

-Justin.

 




Great to Hear it Made it to you Safe & Sound Justin! smile Just Happy to give Something Back for the Cause. wink



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I received the Innovate LC-1 Wideband from Greg yesterday in the post!!! Thanks heaps for donating this mate, much appreciated :)

I will pull my headers off in the next couple of days and get the bung welded in and I will keep working on the changes to get this data fed into the ecu.

Cheers

-Justin.


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glad i could help

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justin, any updates....how close is the algrothim...?

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stocker wrote:

justin, any updates....how close is the algrothim...?



 

I just installed the LC-1 wideband over the weekend and it is all up and running! so I will continue work on feeding the signal into the ecu. Should be a lot easier now i have an ecu test rig set up on the bench next to my pc at home.

Probably still a couple off weeks away for feeding this into the ecu and sending data out to ECU Editor and the ecu data logger.



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just put my bike together, and will be testing this weekend at bradenton fla.....what do i need to do, i just rode the bike for the first time in 2 months, i got a wego2 datalogger on it...?

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If you want to try out the ECU Datalogger all you need to do is plug in your ecu harness into a laptop and fire up the application, create a new log file, and click start logging.

This will give you a log file with a lot of the engine data and the narrow band o2 sensor data.

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I made some good progress last night, I got the test ecu set up on the bench and fed the 5v power source for sensors through a 10,000 ohm pot back in through one of the A/D inputs (TPS) on the ecu, i fired up the ECU Data Logger and as i varied the voltage I was getting the data back out through the interface and into the ECU Data Logger. Test bench ecu is now operational!

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Justin can this be used to log varying inputs and maybe help identify various tables ?

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Maj750 wrote:

Justin can this be used to log varying inputs and maybe help identify various tables ?




Hi Maj, I am not sure exactly what you mean, can you give me some more info so i can give you a proper response.

Cheers



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Say if your logging many inputs and outputs
for outputs you can look at a unknown table or map and put a spike in the numbers or then compare logs to help isolate what that table does
Or on inputs vary a resistance or voltage and see the results
back to back comparisons could be quite definitive

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Maj750 wrote:

Say if your logging many inputs and outputs
for outputs you can look at a unknown table or map and put a spike in the numbers or then compare logs to help isolate what that table does
Or on inputs vary a resistance or voltage and see the results
back to back comparisons could be quite definitive




I think I am with you now, it could be used to control inputs into the ecu on the bench and see what effect varying the inputs has on the outputs from the ecu. So for example you could connect pots up to control the input voltage for TPS, GPS and IAP and set them to a particular combination and see what the output signals are from the ecu.



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yeah that sort of thing, may help narrow down some things quicker , then scope them to be more specific
sort of depends how much your logging

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very cool justin, very excited to possibly have the ability to log all ecu data along with wideband data :)

Now if you could get the ecu data stream into the innovative data stream for logging without a laptop, i might have to donate a dl32 to you for that :)

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smithabusa wrote:

very cool justin, very excited to possibly have the ability to log all ecu data along with wideband data :)

Now if you could get the ecu data stream into the innovative data stream for logging without a laptop, i might have to donate a dl32 to you for that :)



hmmm, that is an interesting idea... I like the idea of being able to go for a ride and log all data including ecu data without setting up the laptop etc etc. you have me thinking now Mr Smith :)

 



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jkwool wrote:

 

smithabusa wrote:

very cool justin, very excited to possibly have the ability to log all ecu data along with wideband data :)

Now if you could get the ecu data stream into the innovative data stream for logging without a laptop, i might have to donate a dl32 to you for that :)



hmmm, that is an interesting idea... I like the idea of being able to go for a ride and log all data including ecu data without setting up the laptop etc etc. you have me thinking now Mr Smith :)

 

 




Even Better, Think about being able to do all the Mentioned above......AND Being able to View it at the Same time.....WITHOUT A LABTOP!(DashDAQ) biggrin



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ToXSicK RoCKeT wrote:

 

Even Better, Think about being able to do all the Mentioned above......AND Being able to View it at the Same time.....WITHOUT A LABTOP!(DashDAQ) biggrin

 




Yeah very good point, I have been thinking about what would be required to log the ecu data stream to the dl-32, and you would need a computer of some description to translate the ecu data into the Innovate format, something like the DashDaq would be ideal as it already logs Innovate MTS format data, we just need to keep asking them to develop a driver for the Busa ecu. I got a reply from them today and they said that they will do it if they get enough interest/questions about it.

So if we were to get a bunch of guys to contact them it would speed up the development. I think the DashDaq would work really well as a general purpose ecu data logger and wideband logger etc rolled into one.

This is the email response from them

------------------------------------

Justin,

 

It typically takes quite a while before a driver like this goes into engineering based on the engineering schedule. The more people that ask for this, the more scheduling will move forward.

Regards,

DrewTech Support

-------------------------------------



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Justin, You have Mail Sir! wink I will send them(DashDAQ)another email As Well. 
For anyone else interested in Reading More about this System, Here is a Link. smile


It's Compatible with A LOT of different Wide Bands(including Innovated & Zeitronix) and OBD2 Vehicles. For the More Technical Guru's on here, Here is some intel.......

APPENDIX A: ACCESSORY CABLE PIN OUT;
1 Red Vehicle Power In/Out If DashDAQ is connected via
OBD2 cable, this is s source for
vehicle power. If OBD2 is not
connected, vehicle power must
be applied here.
2 Orange Serial Port 1 Rx Connect to pin 3 of PC DB-9
3 Yellow Serial Port 2 Tx Connect to pin 2 of PC DB-9
4 Blue Serial Port 2 Rx Connect to pin 3 of PC DB-9
5 Brown Serial Port 1 Tx Connect to pin 2 of PC DB-9
6 Black Case Ground 1Meg Ohm to Gnd. For cable
shielding. Do not use as a
Ground.
7 White Analog input 2 0.0 to 5.0 Volt input
8 Pink 5V @ 500ma Output Resettable fuse protected.
9 Green Analog input 1 0.0 to 5.0 Volt input
10. Shield Ground This is the signal ground. Connect to pin 5 of PC DB-9 Note: For future compatibility tie 6 and 10 together.

Another Link for Some General info.......




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What about adapting something like this for data storage
http://www.apexvalue.com/driveright/carchip8220.htm
Is anyone familiar with the type of communication that obd2 uses ?

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Maj750 wrote:

What about adapting something like this for data storage
http://www.apexvalue.com/driveright/carchip8220.htm
Is anyone familiar with the type of communication that obd2 uses ?



Unfortunately ODB2 is a different protocol to what the busa ecu's use, the Busa uses the KWP 2000 protocol. I have looked at a couple of options for cheap data loggers that may be able to be programmed as well.

http://www.pololu.com/catalog/product/1623/resources

http://www.embeddedstar.com/weblog/2009/12/15/dawn-in-vehicle-testing/



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Hi,

Sorry but i don´t now where is the problem, the cheapest way is a Primer2 from STM.

I have write some code for this tool, for the moment this functions are work:

Logging the ECU-data over the SDS and the LC-1 data over the serial interface, Display some Data on the LCD and send all Data out over the usb-bus to the PC or what else. Storing all logging-data onto SD-Card max. 50hours i think that is enough, also store some ECU.bin file on the SD-Card.

To do list: Converting the data which they can be read from Log-Works,write some code that the Primer can flash the ECU without Pc and Ftdi-Interface.

This is the first rough but it give a lot of little things to make.

Boerd

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Boerd wrote:

 

Hi,

Sorry but i don´t now where is the problem, the cheapest way is a Primer2 from STM.

I have write some code for this tool, for the moment this functions are work:

Logging the ECU-data over the SDS and the LC-1 data over the serial interface, Display some Data on the LCD and send all Data out over the usb-bus to the PC or what else. Storing all logging-data onto SD-Card max. 50hours i think that is enough, also store some ECU.bin file on the SD-Card.

To do list: Converting the data which they can be read from Log-Works,write some code that the Primer can flash the ECU without Pc and Ftdi-Interface.

This is the first rough but it give a lot of little things to make.

Boerd

 




Boerd, hi yes I remember reading about the Primer code that you wrote, there is a new version coming out soon as well (September 2010) that has a bunch of new features.

http://www.mcu-raisonance.com/~open4-primer-for-stm32e__microcontrollers__product~product__T017:4hpkyykjl1si.html

Any chance you could send me the source code that you have written for the Primer? If you are willing to share please send to ECUDataLogger @ gmail.com

Cheers

-Justin.



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Hi Justin,

in my source code i have write all the Comments in German, so i will change it to english.

But the most of the code you found in the STM32F10x Standard Peripherals Library:

USART, SDIO, TIM, Systick and NVIC.

Also look at the STM_32 Usb-FS-Device Library: Virtual-Com-Port, and

into the Circel-OS for the LCD-Driver.

My Code run as singel App. without Circel-OS.

The SD-Card has no Fat-File-System i have make my own System.

Over the Virtual-Com-Port runs the communication with the PC, the

Primer can send 820KB/sec to the PC and in the other way 512Bytes per Frame =1ms

is the Sd-Card fast enough after 2.048 sec a ECU.bin file is on the Primer SD-Card.

Boerd


-- Edited by Boerd on Wednesday 11th of August 2010 02:49:01 PM

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Boerd wrote:

 

Hi Justin,

in my source code i have write all the Comments in German, so i will change it to english.

But the most of the code you found in the STM32F10x Standard Peripherals Library:

USART, SDIO, TIM, Systick and NVIC.

Also look at the STM_32 Usb-FS-Device Library: Virtual-Com-Port, and

into the Circel-OS for the LCD-Driver.

My Code run as singel App. without Circel-OS.

The SD-Card has no Fat-File-System i have make my own System.

Over the Virtual-Com-Port runs the communication with the PC, the

Primer can send 820KB/sec to the PC and in the other way 512Bytes per Frame =1ms

is the Sd-Card fast enough after 2.048 sec a ECU.bin file is on the Primer SD-Card.

Boerd


-- Edited by Boerd on Wednesday 11th of August 2010 02:49:01 PM

 




Thanks Boerd, that would be awesome, it would speed up my learning curve significantly to be able to see your source code and read your comments!

I might buy one of the Primer 2's today and start to learn my way around.

Cheers

-Justin.



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I ordered a Primer 2 today so should get it early next week. 

Boerd have you looked into the AD converters on the Primer? Might be the fastest way to get the primer logging data from the LC-1 Wideband instead of hacking the Innovate MTS protocol.

Cheers

-Justin.


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Hi Justin,
of course I have looked at the A / D converter and from all Cortex-M3 derivatives has the STM32 the best data.

Please Remember these things each A / D and D / A converter has different error.
An example: The A / D converter depends on which the lambda probe fault then the D / A converter from the LC-1 produces an additional error and last but not least the A / D converter from the STM32 has errors
.

Every 150ms comes new Data from the ECU and every 81.92ms comes the Data from LC-1 digital without the errors from the D/A converter(LC-1) and A/D converter STM32.

For me it has no advantage over the lambda measurement perform an A / D converter, but I have provided a precaution in the source code.
will say one for each block of data from the ECU, I have provided 512bytes on the SD card.

Boerd


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Boerd wrote:

 

Hi Justin,
of course I have looked at the A / D converter and from all Cortex-M3 derivatives has the STM32 the best data.

Please Remember these things each A / D and D / A converter has different error.
An example: The A / D converter depends on which the lambda probe fault then the D / A converter from the LC-1 produces an additional error and last but not least the A / D converter from the STM32 has errors
.

Every 150ms comes new Data from the ECU and every 81.92ms comes the Data from LC-1 digital without the errors from the D/A converter(LC-1) and A/D converter STM32.

For me it has no advantage over the lambda measurement perform an A / D converter, but I have provided a precaution in the source code.
will say one for each block of data from the ECU, I have provided 512bytes on the SD card.

Boerd

 




Ok thanks for the info Boerd.

So by the sounds of it you have hacked the Innovate MTS protocol and are using that to log the wideband data?

I have found that you can increase the rate of ecu logging down to about 65ms so i was thinking it may be possible to have the Innvoate MTS packet arrival (i.e. every 81.92 ms) drive the ecu data request so they data for both would be in sync and from the same time frame.

 



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Hi,
i thing the 65ms for ECU-Data refresh is not right, but i hope i am wrong!!.

Plase make a test after you read a new paket from the ecu set your read-buffer
to zero than you can see if in the puffer new or old data. i have testet with the primer
and it seems for me 150ms is the min. time that the ecu answer right.

Boerd

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Boerd wrote:

Hi,
i thing the 65ms for ECU-Data refresh is not right, but i hope i am wrong!!.

Plase make a test after you read a new paket from the ecu set your read-buffer
to zero than you can see if in the puffer new or old data. i have testet with the primer
and it seems for me 150ms is the min. time that the ecu answer right.

Boerd




Ok you may be right, i may be just reading the same data again, I will do the test you suggest and see what the results are. I wonder if this could be changed in the ecu code to speed up the rate at which the serial data is transmitted. I have looked through the assembly for this section of the code but I could not see anything obvious. Or is this a limitation of the connection speed...



-- Edited by jkwool on Thursday 12th of August 2010 09:01:33 AM

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Hi,
i hope i am right in my mind:
Baudrate 7812 = 128.008us x10Bit(8Data+1Start+1Stop) =1.2800ms for 1 Byte
on this way you can calculate the time, for kwp81? it come back 128???Bytes x 1.28ms=163.85ms.

Boerd

-- Edited by Boerd on Thursday 12th of August 2010 09:07:02 AM

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Boerd wrote:

Hi,
i hope i am right in my mind:
Baudrate 7812 = 128.008us x10Bit(8Data+1Start+1Stop) =1.2800ms for 1 Byte
on this way you can calculate the time, for kwp81? it come back 128???Bytes x 1.28ms=163.85ms.

Boerd

-- Edited by Boerd on Thursday 12th of August 2010 09:07:02 AM




You calculation looks right to me, hmmm how can we speed this up, either increase the baudrate or decrease the package size... Do you know if we can increase the baudrate or is this fixed by the hardware?



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You can increase the bauderate in the ecu, what i have seen it send the data over
dma to the usart, but i dont now the refresh speed for this data into the ecu-ram.
i hope you understand me.

-- Edited by Boerd on Thursday 12th of August 2010 09:28:13 AM

-- Edited by Boerd on Thursday 12th of August 2010 09:30:53 AM

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Boerd wrote:

You can increase the bauderate in the ecu, what i have seen it send the data over
dma to the usart, but i dont now the refresh speed for this data into the ecu-ram.
i hope you understand me.

-- Edited by Boerd on Thursday 12th of August 2010 09:28:13 AM

-- Edited by Boerd on Thursday 12th of August 2010 09:30:53 AM



If we referenced the AD convertor Ram addresses directly the refresh speed should not be a problem and we could get the full 10 bit AD values, i would think the the ecu ram would be updated way faster than we would need for serial communications. 

How do you increase the baud rate in the ecu? Is that in the initialization sequence?

 



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quick replay http://www.activeboard.com/forum.spark?aBID=99460&p=3&topicID=29481210

specified for more accurate I have to watch that yet in the source code.

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Ok Thanks Boerd

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I made a bunch of progress today, I fed the Innovate MTS output into the ecu data logger and logged narrowband data along side lc-1 wideband data and refined the narrowband response curve so its out put should be useable for basic tuning now. I think its probably time to integrate the ECU Data Logging into ECU Editor and look at providing fuel map adjustments based on logged AFR values.

I also took delivery of my STM32 Primer 2, I was surprised at how compact it is, should be easy to tuck it under my seat for logging sessions to the on board micro sd card. I just have to learn how to program it now. might take a couple of days i reckon :)


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jkwool wrote:

I made a bunch of progress today, I fed the Innovate MTS output into the ecu data logger and logged narrowband data along side lc-1 wideband data and refined the narrowband response curve so its out put should be useable for basic tuning now. I think its probably time to integrate the ECU Data Logging into ECU Editor and look at providing fuel map adjustments based on logged AFR values.



 



sounds great when can we expect to see an update?
not rushing you LOL

 



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slantman wrote:

 

sounds great when can we expect to see an update?
not rushing you LOL

 



I might also make the mods to allow the wideband data to be logged via the ecu to the serial data stream as well, so might take a few days.



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Wow, great progress. Starting to wonder if I shouldn't cancel my backordered for months DL-32 confuse

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maybe lol, diyautotune.com usually has stuff in stock, they might have a dl32 in stock if you really want one jeff

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Justin is the data obtained / used at this point going to be from narrow band or wide band generated ? Also when you say "providing fuel map adjustments based on logged AFR values" Are these "suggestions" to adjustment going to be software generated ?
Cheers
.

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Pitstop wrote:

Justin is the data obtained / used at this point going to be from narrow band or wide band generated ? Also when you say "providing fuel map adjustments based on logged AFR values" Are these "suggestions" to adjustment going to be software generated ?
Cheers
.



I plan to offer both narrowband data and wideband for those that have a wideband. 

Yes suggestions software based using the relevant measured afr for that particular cell also taking into account surrounding cells as surrounding cells have an influence.

 



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will we have a choose as to what the target AFR will be, or will it be stoichiometric aproximately 14.7

-- Edited by slantman on Sunday 15th of August 2010 12:02:15 AM

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