Has anyone created an A2L to ECU converter for measurements?

I'm 3/4 of the way through creating a Perl script which does exactly this but there are a couple of values that are giving me issues.  I think I have most of the columns sorted expect for the offset column (B) which is giving me some issues.  Does anyone know how the formula for calculating the offset based on the A2L description?

As an example, tv2

A2L def:
/begin MEASUREMENT

    atv2
    "aktueller Lernkennfeld-Integratorwert der Regelung hinter Kat Bank2"
    SBYTE
    t100msxs_sb_q0p01
    1
    100
    -1.28
    1.27

   
    FORMAT "%5.3"
   
    ECU_ADDRESS 0x3829FC
    /begin IF_DATA ASAP1B_ADDRESS  KP_BLOB 0x3829FC /end IF_DATA
    /begin IF_DATA ETK  KP_BLOB 0x3829FC 0x1 0x1 /end IF_DATA
/end MEASUREMENT

/begin MEASUREMENT


ME7info .ECU output
atv2            , {}                                , 0x3829FC,  1,  0x0000, {s}       , 1, 0,         0.01,      0, {aktueller Lernkennfeld-Integratorwert der Regelung hinter Kat Bank 2}

Current version of Perl Script
atv2             , {}                    , 0x3829FC,  1,  0x0000, {s}       ,1, 0,          0.01, 1.28, {aktueller Lernkennfeld-Integratorwert der Regelung hinter Kat Bank2}

When I have a couple of little calcs figured out I will be making this available if anyone wants it

Yeah that would also be interesting.

I'm trying to do this so I can import A2L defined variables into IDA, which I can pretty much do now.  But the second part is to have every A2L measurement definition in ECU format for logging without having to manually create the entries (worst case change the address from the A2L bin address to my 558B-002 address)

I think I getting there, it has to do with the Coeffs in the Compu Method.  If you look at the compu method name most are actually defined with factor and offset in the title!

t100msxs_sb_q0p01
Offset 0
Factor 0.01
(atv2)

temp_ub_q0p75_o48
Offset 48
Factor 0.75
(tmotlin)

I will def make it available one way or another but the calc is not that easy as the title is only approx, to get it correct it needs to be calculated from the Coeffs themselves, will try and have it done by tomorrow. Will keep posting on progress

Yeah the actual Perl side is not the issue it's the figuring out how the Coeffs work together to give the Factor and Offset.

In the ASAP2 defs the formula is f(x)=(axx+bx+c)/(dxx+ex+f), this does not work for all cases using the ECU from ME7Info as a guide.

I'm slowly getting there

assuming a, d, and e are always zero (linear transfer function), shoudlnt it be f(x) = (b/f)x + c/f, so facctor is b/f and offset is c/f?

Yeah agree, but unfortunately they are not always 0

if any are non zero you cannot represent the transfer function via factor + offset.

if a, b and d are zero, but e is not, then the transfer function is a linear inverse.