The address for some local variables and function parameters seem to be wrong. Why?
The compiler allocates space for local variables and parameters at fixed static locations because a dynamic stack is too costly (much more code generated and slow program execution). Local variables and parameters may share the same static locations to achieve efficient and safe reuse of RAM space. However, local variables are not allocated if the function is not called. The valid call trees are from main() and the interrupt routine, either by a direct call or indirectly through another function.
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