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IAR Embedded Workbench displayed FFs when processor halted

Jeremy Dwyer
Intellectual 385 points

Other Parts Discussed in Thread: CC2530, Z-STACK, CC2591

Hi all,

I was attempt to discover the cause of a router crashing by running the router under the debugger overnight.  I am using a CC2530 + CC2591 with Z-Stack 2.5.1a and IAR Embedded Workbench 8.20.1.

I saw that the router locked up while running under the debugger, and was able to pause the debugger, but it was reading all 0xFFs for all data, including the CODE and XDATA memory.  The call stack also made no sense.  Please see the attached pictures.

I was able to do a soft reset under the debugger, see the code stop at main, and see more reasonable output in the CODE space.

I tried looking at the CC2530 datasheet for ideas on how the debugger is structured, but could not find anything very detailed.  Any ideas on how the debugger could get in the state it got in?

Thanks,

Jeremy

PS  I removed references to the client I am working for in these pictures :)