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K70 Jumps to Unknown Memory Areas

Question asked by Kyle Daruwalla on May 13, 2014
Latest reply on May 14, 2014 by Mark Butcher



I am currently trying to program a K70F120M. Unfortunately, the program never seems to get to main() when I flash it. If I run it under the debugger and ask the debugger to stop at the program start point, it will pause execution at the start boot script. As I step through, the program will all of a sudden jump to an instruction at an unknown location in memory like 0xFFFFFFFE. I do not know why this is happening. My only guess is that when I flash the chip, I need to include an offset so I don't right over the security area. I am wondering if there is some absolute jump that is being screwed up by this offset. Has anyone run into such an issue? Or perhaps, you have had the security area issue, and if so, how did you overcome that?