Thanks Nick,
As far as I can see the examples provided by Darrel in that thread has the same limitation as in "only" going to 655359999 which is "only" ~15% of the 32bit range.
In my case I really do need the full 32bits since the value can and do wrap around. Displaying it signed would be cool but I'll take unsigned over what I have right now any day.

Richard,
Wow, thank you very much indeed!
I have it running on a little dev.board, next is to incorporate it in the actual code, we'll see how that goes.

Thanks again!

/Henrik.