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Re: ELM327 Software Development
Posted: Mon Sep 23, 2013 2:43 pm
by delcowizzid
get me one ready i now have to drive to where the VT is as it lost a wheel at 100kmh LOL
Re: ELM327 Software Development
Posted: Mon Sep 23, 2013 3:10 pm
by Tazzi
delcowizzid wrote:get me one ready i now have to drive to where the VT is as it lost a wheel at 100kmh LOL
Lol.. and who was the last person to tighten the wheel nuts??
Try this out. Iv just done a simple request for Engine RPM and Coolant temp. If that works, Ill chuck in the custom request and fault code searching!
I think the "Header Destination" can be set as 6A or 10, either one address the pcm. From what I can tell, 6A is a "generic" destination that most modules pick up.
Re: ELM327 Software Development
Posted: Mon Sep 23, 2013 4:44 pm
by Charlescrown
Still no luck. I just tried my first Chinese OBD2 scantool and none work. It seems strange to me that they all work with my other software.
Sorry to see Delcowizard's car lost a wheel at high speed. Hope all is OK but I am sure there will be substantial damage to the car.
Re: ELM327 Software Development
Posted: Mon Sep 23, 2013 5:02 pm
by Tazzi
Charlescrown wrote:Still no luck. I just tried my first Chinese OBD2 scantool and none work. It seems strange to me that they all work with my other software.
Sorry to see Delcowizard's car lost a wheel at high speed. Hope all is OK but I am sure there will be substantial damage to the car.
Yeah thats why im interested in seeing what is being requested between your cable and the software, I dont see how Delcowizards is working whereas yours isnt! Since his worked with easyOBDII and now mine.
Re: ELM327 Software Development
Posted: Mon Sep 23, 2013 5:15 pm
by Tazzi
Charles, Try this.
This is just a quick throw together, it will send the "ATZ" (get elm info).. then will continue trying to read byte by byte until you click disconnect. Otherwise it will just keep saying timeout if there is nothing present!
so if this doesnt display anything, then the software is not getting a response back from your elm devices, as its literally just reading every single byte from the serialport and displaying as hex
Re: ELM327 Software Development
Posted: Mon Sep 23, 2013 5:30 pm
by Charlescrown
Hmmm this has me bugged. It still can't see the ELM device. FRUSTRATING
Re: ELM327 Software Development
Posted: Mon Sep 23, 2013 5:34 pm
by Tazzi
Charlescrown wrote:Hmmm this has me bugged. It still can't see the ELM device. FRUSTRATING
What does it display in the box when you run it? It should show a whole heap of hex.
Copy an paste and chuck into here.
Will need to manually turn the hex into characters to see what the elm is responding.
Re: ELM327 Software Development
Posted: Tue Sep 24, 2013 6:41 am
by Charlescrown
This is all I get
Attempting to Connect to Comport...
Searching for Device...
Timed out..Searching again..1
ELM Device Not Detected!
Re: ELM327 Software Development
Posted: Tue Sep 24, 2013 9:16 am
by Tazzi
Charlescrown wrote:This is all I get
Attempting to Connect to Comport...
Searching for Device...
Timed out..Searching again..1
ELM Device Not Detected!
Means that nothing is being sent back over the serialport from the elm. That little throw together app I chucked up would have displayed absolutely anything on the comport.
So I not sure Charles! Guess we will have to wait and see if anyone else has the same issue.
Re: ELM327 Software Development
Posted: Tue Sep 24, 2013 11:06 am
by antus
Im not sure you can rely on the interface running at the same speed by default - i think that may also be the problem with the elm adx. You might need to try 9600, 38400, 57600 and 115200 and try and init it at each speed or something like that and run at the speed you get an answer with.