AVR-Chat

> I'm using the IAR compiler V5.11 or 5.12 and need to use the feature
> that has the linker write a CRC in the last two bytes of the executable.
>
> I got the linker to write the CRC and I am able to read it back.  The
> problem is, I can't manage to compute the same one.  I have tried
> several different routines to generate the CRC and they agree with
> each other, but not with what IAR computes.  In each case, it is
> supposed to be a CRC 16 of the CCITT variety with 0x1021 as the
> polynomial.
>
> Has anyone gotten this to work?  Is there some sample code somewhere
> that has been shown to work with the IAR computed CRC?
>
> Thanks.
>

Phillip -

There are a number of "standard" initial conditions for the polynomial, I
think. Each one gives a different result. I am using IAR, against my
better instincts, but its at work and I am 300 miles from there. I will be
happy to check when I return on Thursday.

Jim Wagner
Oregon Research Electronics