Checksum of FLASH in Codewarrior 6.3

[TranceAddict]

Hi,
I am developing a safety critical application where the contents of FLASH must be checksummed before execution can begin. I have found reference in a few documents about using a checksum command in the linker configuration, but can't find any reference to that in my current Codewarrior 6.3 for Coldfire documentation. Does this option still exist and if so, how does one use it. If not, is there an easy alternative method to calculate the checksum and store in in the s19 record such that it checked at runtime?

Thanks!

[J2MEJediMaster]

I looked through the 6.3 manuals and yes, the information on a checksum is pretty sparse. I'm trying to find out more.

---Tom

[TranceAddict]

Hi Tom,
Did you get anywhere with finding out how to calculate the checksum?
Thanks,
Matt

[sjmelnikoff]

Matt,

If you haven't already looked into this, you might want to consider writing your own utility to read the s-record file and insert a CRC into it directly. You can then run this utility as a post-link step.

Steve.

[Nouchi]

Hi,


Or you can do that in the host bootloader side, if you use one

Emmanuel

Message Edited by BugMan on 2007-02-1210:44 AM

[sjmelnikoff]

Yes - unless you also want to verify that the file you've just downloaded is valid.

Steve.