AVR-Chat

Jim,

Did you happen to get a chance to look at this?  I got pulled off to  
something else for a few days but I'll be getting back to it soon.

Thanks.

On May 4, 2010, at 9:12 PM, wagnerj@proaxis.com wrote:

>> 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
>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>