Honored Contributor
Honored ContributorI think the change you suggest will reserve the top of sdram - not the bottom.
If the heap start is at 'end', this will normally be the address following the code and static data. So the '0' address actually contains something else (probably code). It might be easier to use a chunk of high sdram for the fixed address buffer. Alternatively, if you only have a small program, write an ldscript that assigns all the sections to appropraite memory areas. If you don't use any stdio functions, you may not even need a heap!
