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Re: Re-scaling MAT counts table $8D SAUJP
Posted: Mon Feb 18, 2013 8:37 pm
by 34blazer
dumb question.....but, to edit the A/D lookup a LF133, can i find it with hex editor or do i need to make the changes to the disassembly(notepad?) and reassemble? also, is there a standard equation to convert A/D counts or will i need to figure it out? not entirely sure on this....
Thanks!
Re: Re-scaling MAT counts table $8D SAUJP
Posted: Mon Feb 18, 2013 8:42 pm
by The1
changning it in hex should be ok, make a spreadsheet and interpolate the values further and then use the range you want.
Re: Re-scaling MAT counts table $8D SAUJP
Posted: Mon Feb 18, 2013 8:56 pm
by 34blazer
as far as the location, LF133, I cant find it. Im still learning how it is all mapped, is there another way i should be looking at it? it has to be displayed differently.
as far as the equation goes, I didnt understand what you meant. I understand how to change the range of the counts, but do not know how to convert them to temperature.
Re: Re-scaling MAT counts table $8D SAUJP
Posted: Tue Feb 19, 2013 9:32 am
by charlay86
34blazer wrote:as far as the location, LF133, I cant find it. Im still learning how it is all mapped, is there another way i should be looking at it? it has to be displayed differently.
LF133 is Location 0xF133 in the bin file.
calculation for temperature is usually: (hex_value * 0.75) - 40 = Temperature in °C
Re: Re-scaling MAT counts table $8D SAUJP
Posted: Tue Feb 19, 2013 4:57 pm
by 34blazer
charlay86 wrote:34blazer wrote:as far as the location, LF133, I cant find it. Im still learning how it is all mapped, is there another way i should be looking at it? it has to be displayed differently.
LF133 is Location 0xF133 in the bin file.
calculation for temperature is usually: (hex_value * 0.75) - 40 = Temperature in °C
so on the address bar on the left im looking for 0000F133? or 0000133? or 000033? still cant find it and its driving me nuts LOL
Re: Re-scaling MAT counts table $8D SAUJP
Posted: Tue Feb 19, 2013 5:31 pm
by charlay86
Just ignore the 'L', you are looking for 0000F133
Re: Re-scaling MAT counts table $8D SAUJP
Posted: Tue Feb 19, 2013 6:02 pm
by 34blazer
charlay86 wrote:Just ignore the 'L', you are looking for 0000F133
yeah its not me then, address only goes up to 00007FF0. dont know where else it could be lol
Re: Re-scaling MAT counts table $8D SAUJP
Posted: Tue Feb 19, 2013 6:14 pm
by charlay86
hmm ok, well you can try searching the bin file for the table.
tunerpro's hex editor can't search so you'll need to use something else, eg winhex, HxD.
- hxdsearch.png (29.2 KiB) Viewed 7173 times
Re: Re-scaling MAT counts table $8D SAUJP
Posted: Tue Feb 19, 2013 6:27 pm
by VL400
The bin must be only 32k, so its 0-7FFF in size. The ECU/processor maps it to 8000-FFFF, so in ECU speak F133 is 7133 in your bin (7133 + 8000 = F133).
When I have looked at rescaling I found it easier to play with pull up resistors and leave the code alone, a temp sensor is highly non-linear so pullup choice is pretty critical for the range you expect to operate in.
Re: Re-scaling MAT counts table $8D SAUJP
Posted: Tue Feb 19, 2013 6:32 pm
by 34blazer
ugh...somethings not right, its not there either. i must be doing something wrong LOL