Posted on May 17, 2011 at 13:37There is not just one ''ARM CortexM3 Compiler'' - You need to state which specific compiler and version you are using!
Quote:
The same code can be run with o1,o2 or o3 but cannot run with o0.
It is almost certainly a flaw in your source code; ie, it is relying upon something that it shouldn't, but which just
happens not to fail with o1,o2 or o3.
Usually it's the other way around - stuff works for no (or low) optimisation, but fails at higher optimisation.
You need to do some
debuggin to determine precisely what is (or is not) happening - ''doesn't run'' tells next to nothing:
Check your use of
volatile.
Check for timing issues.
Also check memory alignment issues.
Are you sure that this isn't a symptom of an underlying hardware fault?
[ This message was edited by: st7 on 12-01-2010 10:24 ]
